CN100413636C - High strength connecting method for TiAl base alloy charging turbine and steel shaft - Google Patents
High strength connecting method for TiAl base alloy charging turbine and steel shaft Download PDFInfo
- Publication number
- CN100413636C CN100413636C CNB2005100104016A CN200510010401A CN100413636C CN 100413636 C CN100413636 C CN 100413636C CN B2005100104016 A CNB2005100104016 A CN B2005100104016A CN 200510010401 A CN200510010401 A CN 200510010401A CN 100413636 C CN100413636 C CN 100413636C
- Authority
- CN
- China
- Prior art keywords
- base alloy
- charging turbine
- tial base
- agcunili
- alloy charging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Connection Of Plates (AREA)
Abstract
The present invention relates to a high strength connecting method for a TiAl base alloy charging turbine and a steel shaft, particularly to a connecting method for a charging turbine and a steel shaft. The present invention overcomes the defect of poor responsivity when an engine is started and stopped existing in the use of a Ni base alloy charging turbine and solves the problems that the joint quality is difficult to guarantee when the TiAl base alloy turbine forms diffusion connection with the steel shaft; joints are easy to crack existing in friction weld; the joint strength is low existing in ordinary brazing. The present invention is implemented by following steps that a, a connecting shaft 1 of the TiAl base alloy charging turbine is processed with external threads 1-1, and an internal thread sleeve 2-1 and an axial technology through hole 2-2 are processed on a steel shaft 2; b, the inner wall of the internal thread sleeve 2-1 is coated with AgCuNiLi braze paste 3; c, the TiAl base alloy charging turbine 4 and the steel shaft 2 are assembled; d, the assembled workpieces are brazed. The present invention is used for the high strength connection of the TiAl base alloy charging turbine and the steel shaft.
Description
Technical field
The present invention relates to the method for attachment of a kind of charging turbine and steel axle, be specifically related to the high strength connecting method of a kind of TiAl base alloy charging turbine and steel axle.
Background technology
In fields such as Aero-Space, military combat tank and sedan limousine, generally adopt turbo charged method to improve the performance of engine.Charging turbine adopts the Ni based high-temperature alloy to make more, and Ni base alloy ratio is great, is easy to generate startup in the engine working process, stops the problem of bad response.Want to solve this type of problem, need find a kind of lightening fire resistant material to replace Ni base alloy.Density is low, specific strength is big, specific stiffness is high because TiAl base alloy has, mechanical behavior under high temperature and the good advantage of antioxygenic property, if can adopt the TiAl base alloy of lightening fire resistant to replace Ni base alloy to make charging turbine, the startability and the dynamic response performance of engine will be improved greatly, reduce the discharge amount of exhaust gas of engine, improve the fuel thermal efficiency of engine, for this reason, need to solve the technical problem that TiAl base alloy turbine is connected with the steel axle.At present, TiAl base alloy turbine and the method for attachment of mainly adopting diffusion connection, friction welding (FW) and soldering being connected of steel axle.Facts have proved, adopt diffusion to connect, have that joint fragility is many mutually, joint quality is difficult to assurance, the problem that the connect hours is long, link cost is high; Adopt friction welding (FW), there are the many mutually problems of joint fragility equally, and the friction welding (FW) cooling velocity easily causes martensite transfor mation in the steel soon, produces the problem that bigger residual stress causes joint cracking in joint, and friction welding method can't weld the small size test specimen; The method that patent CN1183334A adopted, need on TiAl base alloy axle, forge hot be pressed into Ni base alloy cover, again Ni base alloy cover is carried out friction welding with the steel axle, because between Ni base alloy cover and the TiAl base alloy turbine is not metallurgical binding, there is bigger difference in the material coefficient of thermal expansion coefficient, this just makes TiAl base alloy charging turbine and Ni base alloy be enclosed within when working under high temperature, the high speed rotating condition might produce the phenomenon of press-offing, and adopts this welding method also to have the problem of complex process; Adopt common soldering, exist strength of joint to hang down problem (just having this problem) as patent EP0837221A2.
Summary of the invention
The objective of the invention is to adopt Ni based high-temperature alloy charging turbine to exist Ni base alloy ratio great for solving, be easy to generate startup in the engine working process, stop the bad response problem and adopt TiAl base alloy turbine to adopt to spread and be connected, have that joint fragility is many mutually, joint quality is difficult to the assurance problem with the steel axle; Adopt friction welding (FW), joint fragility is many mutually, easily cause joint cracking, can't carry out Welding Problems to the small size test specimen; Adopt common soldering, have the low problem of strength of joint and a kind of TiAl base alloy charging turbine that provides and the high strength connecting method of steel axle.It is finished by following steps: a, on the outer wall of TiAl base alloy charging turbine connecting axle 1 threading 1-1, steel axle 2 is processed inner screw sheath 2-1 that matches with the external screw thread connecting axle of TiAl base alloy charging turbine 4 and the axial technology through hole 2-2 that communicates with inner screw sheath 2-1 along axis direction; B, on the inwall of inner screw sheath 2-1, apply AgCuNiLi solder paste 3, described AgCuNiLi solder paste 3 is that 9～11: 1 ratio is mixed to stir and made by AgCuNiLi solder powder and adhesive according to weight proportion, described AgCuNiLi solder powder is formed by following component and according to percentage by weight: Cu:22.5～29.5%, Ni:1.5～4.5%, Li:0.3～1.5%, Ag surplus, and described adhesive is that 1～3: 100 ratio is mixed to stir and made by hydroxyethylcellulose and distilled water according to weight proportion; C, the external screw thread connecting axle of described TiAl base alloy charging turbine 4 is screwed in the inner screw sheath 2-1 of steel axle 2, external screw thread 1-1 on the outer wall of the internal thread 2-1-1 of the inner screw sheath 2-1 of steel axle 2 and TiAl base alloy charging turbine connecting axle 1 adopts matched in clearance, and gap value is a Δ; D, TiAl base alloy charging turbine 4 assembled with steel axle 2 be placed on soldering under the Ar gas shiled, the soldering heating-up temperature is 860～950 ℃, and temperature retention time is 2～15min, and programming rate is 10～50 ℃/min.
The present invention has following beneficial effect: one, the present invention is threading on the outer wall of TiAl base alloy charging turbine connecting axle, and the steel axle processed the inner screw sheath that matches with the external screw thread connecting axle of TiAl base alloy charging turbine along axis direction, on the inwall of inner screw sheath, evenly smear solder paste, TiAl base alloy turbine connecting axle is screwed in the inner screw sheath of steel axle, solder paste can be filled in the Screw Thread Fit Clearance under the effect of the revolving force of screw thread and frictional force uniformly in the screw-in process, after TiAl base alloy turbine and steel axle worked good, the soldering heating, the solder fusing, final set forms high-strength joint.Two, AgCuNiLi solder paste 3 of the present invention is made according to a certain weight ratio by AgCuNiLi solder powder and binding agent; the AgCuNiLi solder powder that is adopted is compared with common AgCu or AgCuTi solder powder; in the AgCuNiLi solder powder of the present invention owing to contain active element Li; can play activation to the steel surface, under industrial Ar gas shiled, can realize the soldering of TiAl base alloy charging turbine and structure steel shaft from brazing flux.Three, the soldering of the present invention's employing is compared with vacuum brazing, can solve to carry out the long problem of the cycle of operation that soldering brings under high vacuum condition; Owing to contain the Ni element in the solder powder of the present invention, can improve the mechanical behavior under high temperature of joint in addition, improve the serviceability temperature of joint to a certain extent.Four, be processed with the axial technology through hole that communicates with inner screw sheath along axis direction in the inner screw sheath of steel axle, its effect is the adhesive in the AgCuNiLi solder paste, water can be vapored away by the technology through hole in heating process; Also can reduce the rotary inertia of steel axle simultaneously.Five, TiAl base alloy charging turbine connecting axle adopts with the steel axle and is threaded, adopt matched in clearance between internal thread and the external screw thread, adhesive in the AgCuNiLi solder paste, water can vapor away by thread pitch in heating process, and this gap can be good at realizing that soldering connects.Six, TiAl base alloy charging turbine connecting axle adopts with the steel axle and is threaded, and when playing positioning action, also can play the effect of intensity compensation.Seven, the present invention has simple, the operation easily of method of attachment, can realize the advantage that TiAl base alloy charging turbine is connected with the high strength of steel axle.
Description of drawings
Fig. 1 is the front view that TiAl base alloy charging turbine connecting axle 1 is processed with external screw thread 1-1, Fig. 2 is steel axle 2 is processed with inner screw sheath 2-1 and axial technology through hole 2-2 along axis direction a main pseudosection, Fig. 3 is the main pseudosection that applies AgCuNiLi solder paste 3 on the inwall of inner screw sheath 2-1, Fig. 4 is that TiAl base alloy charging turbine 4 adopts the front view that is threaded with steel axle 2, Fig. 5 is TiAl base alloy charging turbine 4 and steel axle 2 solderings structure chart together, and Fig. 6 is the structure chart that TiAl base alloy charging turbine connecting axle 1 and inner screw sheath 2-1 adopt matched in clearance.
The specific embodiment
The specific embodiment one: present embodiment is described in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, the TiAl of present embodiment base alloy charging turbine is finished by following steps with the high strength connecting method of steel axle: a, on the outer wall of TiAl base alloy charging turbine connecting axle 1 threading 1-1, steel axle 2 is processed the inner screw sheath 2-1 that matches with the external screw thread connecting axle of TiAl base alloy charging turbine 4 along axis direction reaches the axial technology through hole 2-2 that communicates with inner screw sheath 2-1; B, on the inwall of inner screw sheath 2-1, apply AgCuNiLi solder paste 3, described AgCuNiLi solder paste 3 is that 9～11: 1 ratio is mixed to stir and made by AgCuNiLi solder powder and adhesive according to weight proportion, described AgCuNiLi solder powder is formed by following component and according to percentage by weight: Cu:22.5～29.5%, Ni:1.5～4.5%, Li:0.3～1.5%, Ag surplus, and described adhesive is that 1～3: 100 ratio is mixed to stir and made by hydroxyethylcellulose and distilled water according to weight proportion; C, the external screw thread connecting axle of described TiAl base alloy charging turbine 4 is screwed in the inner screw sheath 2-1 of steel axle 2, external screw thread 1-1 on the outer wall of the internal thread 2-1-1 of the inner screw sheath 2-1 of steel axle 2 and TiAl base alloy charging turbine connecting axle 1 adopts matched in clearance, and gap value is a Δ; D, TiAl base alloy charging turbine 4 assembled with steel axle 2 be placed on soldering under the Ar gas shiled; the soldering heating-up temperature is 860～950 ℃; temperature retention time is 2～15min, and programming rate is 10～50 ℃/min, and the diameter of TiAl base alloy charging turbine connecting axle 1 can be chosen between 10～100mm.
The specific embodiment two: present embodiment is described in conjunction with Fig. 1, Fig. 2, the difference of the present embodiment and the specific embodiment one is: in a step of present embodiment, processing closely-pitched external screw thread on the outer wall of TiAl base alloy charging turbine connecting axle 1 processes closely-pitched inner screw sheath that matches with the closely-pitched external screw thread connecting axle of TiAl base alloy charging turbine 4 and the axial technology through hole 2-2 that communicates with the closely-pitched inner screw sheath with steel axle 2 along axis direction.Adopt fine thread, can guarantee the bonding strength and the rigidity of TiAl base alloy charging turbine 4 and steel axle 2.
The specific embodiment three: present embodiment with the difference of concrete enforcement one is: in the b step of present embodiment, on the inwall of closely-pitched inner screw sheath, apply AgCuNiLi solder paste 3, described AgCuNiLi solder paste 3 is that 9: 1 ratio is mixed to stir and made by AgCuNiLi solder powder and adhesive according to weight proportion, described AgCuNiLi solder powder is formed by following component and according to percentage by weight: Cu:22.6%, Ni:4.4%, Li:0.9%, the Ag surplus, described adhesive is that 1: 100 ratio is mixed to stir and made by hydroxyethylcellulose and distilled water according to weight proportion.The AgCuNiLi solder paste 3 that adopts above-mentioned technical parameter to make is applicable under the little condition of TiAl base alloy charging turbine connecting axle 1 diameter.
The specific embodiment four: the difference of the present embodiment and the specific embodiment one is: in the b step of present embodiment, on the inwall of closely-pitched inner screw sheath, apply AgCuNiLi solder paste 3, described AgCuNiLi solder paste 3 is that 10: 1 ratio is mixed to stir and made by AgCuNiLi solder powder and adhesive according to weight proportion, described AgCuNiLi solder powder is formed by following component and according to percentage by weight: Cu:29.4%, Ni:1.6%, Li:0.3%, the Ag surplus, described adhesive is that 2: 100 ratio is mixed to stir and made by hydroxyethylcellulose and distilled water according to weight proportion.The AgCuNiLi solder paste 3 that adopts above-mentioned technical parameter to make is applicable under the bigger condition of TiAl base alloy charging turbine connecting axle 1 diameter.
The specific embodiment five: the difference of the present embodiment and the specific embodiment one is: in the b step of present embodiment, on the inwall of closely-pitched inner screw sheath, apply AgCuNiLi solder paste 3, described AgCuNiLi solder paste 3 is that 11: 1 ratio is mixed to stir and made by AgCuNiLi solder powder and adhesive according to weight proportion, described AgCuNiLi solder powder is formed by following component and according to percentage by weight: Cu:26.0%, Ni:3.0%, Li:1.4%, the Ag surplus, described adhesive is that 3: 100 ratio is mixed to stir and made by hydroxyethylcellulose and distilled water according to weight proportion.The AgCuNiLi solder paste 3 that adopts above-mentioned technical parameter to make is applicable under the very big condition of TiAl base alloy charging turbine connecting axle 1 diameter.
The specific embodiment six: the difference of the present embodiment and the specific embodiment one is: in the b step of present embodiment, described AgCuNiLi solder paste 3 is the AgCuNiLi solder powder of 45～75 μ m and adhesive according to weight proportion by granularity is that 9～11: 1 ratio is mixed to stir and made.Adopt above-mentioned technical parameter, in the time of can guaranteeing that not only external screw thread 1-1 on the outer wall of internal thread 2-1-1 and TiAl base alloy charging turbine connecting axle 1 of inner screw sheath 2-1 of steel axle 2 matches, AgCuNiLi solder paste 3 closely contacts with TiAl base alloy charging turbine connecting axle 1 and steel bushing 2, also can guarantee TiAl base alloy charging turbine 4 and steel axle 2 high-intensity linking together simultaneously.
The specific embodiment seven: the difference of the present embodiment and the specific embodiment six is: in the b step of present embodiment, described AgCuNiLi solder paste 3 is the AgCuNiLi solder powder of 46 μ m and adhesive according to weight proportion by granularity is that 9: 1 ratio is mixed to stir and made.Adopt above-mentioned technical parameter, can guarantee that AgCuNiLi solder paste 3 covers on the contact-making surface between TiAl base alloy charging turbine connecting axle 1 and the inner screw sheath 2-1 equably, thereby guarantee TiAl base alloy charging turbine 4 and steel axle 2 high-intensity linking together.
The specific embodiment eight: the difference of the present embodiment and the specific embodiment six is: in the b step of present embodiment, described AgCuNiLi solder paste 3 is the AgCuNiLi solder powder of 74 μ m and adhesive according to weight proportion by granularity is that 11: 1 ratio is mixed to stir and made.Adopt above-mentioned technical parameter, can guarantee TiAl base alloy charging turbine 4 and steel axle 2 high-intensity linking together, be suitable under the bigger situation of TiAl base alloy charging turbine connecting axle 1 diameter of axle.
The specific embodiment nine: the difference of the present embodiment and the specific embodiment six is: in the b step of present embodiment, described AgCuNiLi solder paste 3 is the AgCuNiLi solder powder of 60 μ m and adhesive according to weight proportion by granularity is that 10: 1 ratio is mixed to stir and made.Adopt above-mentioned technical parameter, can guarantee TiAl base alloy charging turbine 4 and steel axle 2 high-intensity linking together.
The specific embodiment ten: present embodiment is described in conjunction with Fig. 6, the difference of the present embodiment and the specific embodiment one is: in the c step of present embodiment, the gap value Δ that the external screw thread 1-1 on the outer wall of the internal thread 2-1-1 of the inner screw sheath 2-1 of steel axle 2 and TiAl base alloy charging turbine connecting axle 1 cooperates is 80～100 μ m.The gap value Δ is chosen in this scope, can guarantee that from then on adhesive, the water in the AgCuNiLi solder paste 3 vapor away in the fit clearance in heating process.
The specific embodiment 11: in conjunction with Fig. 6 present embodiment is described, the difference of the present embodiment and the specific embodiment ten is: in the c step of present embodiment, the gap value Δ that internal thread 2-1-1 cooperates with external screw thread 1-1 is 90 μ m.When the inner screw sheath 2-1 fit diameter of TiAl base alloy charging turbine connecting axle 1 and steel bushing 2 is big, internal thread 2-1-1 and external screw thread 1-1 can select bigger gap value Δ, can guarantee that so from then on adhesive, the water in the AgCuNiLi solder paste 3 vapor away rapidly in the fit clearance in heating process.
The specific embodiment 12: in conjunction with Fig. 6 present embodiment is described, the difference of the present embodiment and the specific embodiment ten is: in the c step of present embodiment, the gap value Δ that internal thread 2-1-1 cooperates with external screw thread 1-1 is 80 μ m.When the inner screw sheath 2-1 fit diameter of TiAl base alloy charging turbine connecting axle 1 and steel bushing 2 hour, internal thread 2-1-1 and external screw thread 1-1 can select less clearance amount Δ, can guarantee that so from then on adhesive, the water in the AgCuNiLi solder paste 3 vapor away rapidly in the fit clearance in heating process.
The specific embodiment 13: in conjunction with Fig. 6 present embodiment is described, the difference of the present embodiment and the specific embodiment ten is: in the c step of present embodiment, the gap value Δ that internal thread 2-1-1 cooperates with external screw thread 1-1 is 100 μ m.When the inner screw sheath 2-1 fit diameter of TiAl base alloy charging turbine connecting axle 1 and steel bushing 2 is very big, internal thread 2-1-1 and external screw thread 1-1 can select big gap value Δ, can guarantee that so from then on adhesive, the water in the AgCuNiLi solder paste 3 vapor away rapidly in the fit clearance in heating process.
The specific embodiment 14: the difference of the present embodiment and the specific embodiment one is: in the d step of present embodiment, the soldering heating-up temperature is 900～930 ℃, and temperature retention time is 5～8min, and programming rate is 20～30 ℃/min.Adopt above-mentioned technical parameter, can improve the bonding strength of TiAl base alloy charging turbine connecting axle 1 and steel bushing 2.
The specific embodiment 15: the difference of the present embodiment and the specific embodiment one is: in the d step of present embodiment, the soldering heating-up temperature is 910 ℃, and temperature retention time is 6min, and programming rate is 25 ℃/min.Adopt above-mentioned technical parameter, can guarantee that TiAl base alloy charging turbine connecting axle 1 is connected with steel bushing 2 high strength.
The specific embodiment 16: the difference of the present embodiment and the specific embodiment one is: in a step of present embodiment, TiAl base alloy charging turbine 4 is formed by following component and according to atomic percent: Ti:23～68%, Al:22～69%, V:1.0～3.0%, Cr:1.5～2.5%, Nb:1.5～2.5%.Can guarantee the bonding strength of TiAl base alloy charging turbine 4 and steel axle 2.
The specific embodiment 17: the difference of the present embodiment and the specific embodiment 16 is: in a step of present embodiment, TiAl base alloy charging turbine 4 is formed by following component and according to atomic percent: Ti:24%, Al:68%, V:3.0%, Cr:2.5%, Nb:2.5%.Can guarantee the intensity of TiAl base alloy charging turbine connecting axle 1.
The specific embodiment 18: the difference of the present embodiment and the specific embodiment 16 is: in a step of present embodiment, TiAl base alloy charging turbine 4 is formed by following component and according to atomic percent: Ti:67%, Al:26.5%, V:2.5%, Cr:2.0%, Nb:2.0%.Can guarantee the intensity of TiAl base alloy charging turbine connecting axle 1.
The specific embodiment 19: the difference of the present embodiment and the specific embodiment 16 is: in a step of present embodiment, TiAl base alloy charging turbine 4 is formed by following component and according to atomic percent: Ti:65%, Al:30%, V:1.8%, Cr:1.6%, Nb:1.6%.Can guarantee the intensity of TiAl base alloy charging turbine connecting axle 1.
The specific embodiment 20: in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 illustrates present embodiment, the TiAl base alloy charging turbine of present embodiment and the high strength connecting method of steel axle are finished by following steps: a, TiAl base alloy charging turbine 4 to be welded is formed by following component and according to atomic percent: Al:46.5%, V:2.5%, Cr:1.5%, Ti: surplus, at TiAl base alloy charging turbine dish diameter to be welded is 155mm, the connecting axle diameter is to process external screw thread 1-1 on the connecting axle outer wall of TiAl base alloy charging turbine 4 of 25mm, Major Diam is 18mm, and reach is 30mm; The 42CrMo steel axle that with diameter to be welded is 25mm processes inner screw sheath 2-1 that matches with the external screw thread connecting axle of TiAl base alloy charging turbine 4 and the axial technology through hole 2-2 that communicates with inner screw sheath 2-1 along axis direction, the reach of inner screw sheath 2-1 is 35mm, and axially the diameter of technology through hole 2-2 is 6mm; B, the threaded engagement position of external screw thread connecting axle and inner screw sheath 2 is cleaned, promptly carrying out earlier ultrasonic wave in acetone cleans, carry out pickling more respectively, pickling can be adopted watery hydrochloric acid or dilute sulfuric acid, cleans 3.2～3.6g is smeared in the back on the inwall of inner screw sheath 2-1 AgCuNiLi solder paste 3; C, with TiAl base alloy charging turbine 4 and steel axle 2 by being threaded togather, the fit clearance Δ of internal thread 2-1-1 and external screw thread 1-1 is 95 μ m; D, TiAl base alloy charging turbine 4 assembled in the soldering oven that is placed on the Ar gas shiled under with steel axle 2 heat, soldering, the soldering heating-up temperature is 900～930 ℃, optimum heating temperature is 910 ℃; Temperature retention time is 5～8min, and best temperature retention time is 6min; Programming rate is 20～30 ℃/min, and optimum temperature rise speed is 25 ℃/min; Solidify the formation high-strength joint.
The soldered fitting extension test result of TiAl base alloy charging turbine 4 and steel axle 2: normal temperature tensile force 201.6KN, to amount to into the uiform section joint tensile strength be 410.9Mpa; Drawing by high temperature power 190.1KN (the drawing by high temperature temperature is 400 ℃), to amount to into the uiform section joint tensile strength be 387.5MPa.
The specific embodiment 21: in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 illustrates present embodiment, the TiAl base alloy charging turbine of present embodiment and the high strength connecting method of steel axle are finished by following steps: a, TiAl base alloy charging turbine 4 to be welded is formed by following component and according to atomic percent: Al:46.5%, V:2.5%, Cr:1.5%, Ti: surplus, at TiAl base alloy charging turbine dish diameter to be welded is 85mm, the connecting axle diameter is to process external screw thread 1-1 on the connecting axle outer wall of TiAl base alloy charging turbine 4 of 20mm, Major Diam is 16mm, and reach is 28mm; The 42CrMo steel axle that with diameter to be welded is 20mm processes inner screw sheath 2-1 that matches with the external screw thread connecting axle of TiAl base alloy charging turbine 4 and the axial technology through hole 2-2 that communicates with inner screw sheath 2-1 along axis direction, the reach of inner screw sheath 2-1 is 32mm, and axially the diameter of technology through hole 2-2 is 6mm; B, the threaded engagement position of external screw thread connecting axle and inner screw sheath 2 is cleaned, promptly carrying out earlier ultrasonic wave in acetone cleans, carry out pickling more respectively, pickling can be adopted watery hydrochloric acid or dilute sulfuric acid, cleans 2.0～2.8g is smeared in the back on the inwall of inner screw sheath 2-1 AgCuNiLi solder paste 3; C, with TiAl base alloy charging turbine 4 and steel axle 2 by being threaded togather, the fit clearance Δ of internal thread 2-1-1 and external screw thread 1-1 is 86 μ m; D, with TiAl base alloy charging turbine 4 and steel axle 2 assemble heating in the soldering oven that is placed on the Ar gas shiled under, solder melts, solidifies the formation high-strength joint, the soldering heating-up temperature is 900～930 ℃, optimum heating temperature is 910 ℃; Temperature retention time is 5～8min, and best temperature retention time is 6min; Programming rate is 20～30 ℃/min, and optimum temperature rise speed is 25 ℃/min.
The soldered fitting extension test result of TiAl base alloy charging turbine 4 and steel axle 2: normal temperature tensile force 128.8KN, to amount to into the uiform section joint tensile strength be 410.2Mpa; Drawing by high temperature power 116.5KN (the drawing by high temperature temperature is 400 ℃), to amount to into the uiform section joint tensile strength be 371.0Mpa.
The specific embodiment 22: in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 illustrates present embodiment, the TiAl base alloy charging turbine of present embodiment and the high strength connecting method of steel axle are finished by following steps: a, TiAl base alloy charging turbine 4 to be welded is formed by following component and according to atomic percent: Al:46.5%, V:2.5%, Cr:1.5%, Ti: surplus, at TiAl base alloy charging turbine dish diameter to be welded is 95mm, the connecting axle diameter is to process external screw thread 1-1 on the outer wall of connecting axle of TiAl base alloy charging turbine 4 of 18mm, Major Diam is 14mm, and reach is 25mm; The 42CrMo steel axle that with diameter to be welded is 18mm processes inner screw sheath 2-1 that matches with the external screw thread connecting axle of TiAl base alloy charging turbine 4 and the axial technology through hole 2-2 that communicates with inner screw sheath 2-1 along axis direction, the reach of inner screw sheath 2-1 is 32mm, and axially the diameter of technology through hole 2-2 is 6mm; B, the threaded engagement position of external screw thread connecting axle and inner screw sheath 2 is cleaned, promptly carrying out earlier ultrasonic wave in acetone cleans, carry out pickling more respectively, pickling can be adopted watery hydrochloric acid or dilute sulfuric acid, cleans 1.5～2.0g is smeared in the back on the inwall of inner screw sheath 2-1 AgCuNiLi solder paste 3; C, with TiAl base alloy charging turbine 4 and steel axle 2 by being threaded togather, the fit clearance Δ of internal thread 2-1-1 and external screw thread 1-1 is 82 μ m; D, with TiAl base alloy charging turbine 4 and steel axle 2 assemble heating in the soldering oven that is placed on the Ar gas shiled under, solder melts, solidifies the formation high-strength joint, the soldering heating-up temperature is 900～930 ℃, optimum heating temperature is 910 ℃; Temperature retention time is 5～8min, and best temperature retention time is 6min; Programming rate is 20～30 ℃/min, and optimum temperature rise speed is 25 ℃/min.
The soldered fitting extension test result of TiAl base alloy charging turbine 4 and steel axle 2: normal temperature tensile force 105.7KN, to amount to into the uiform section joint tensile strength be 415.6Mpa; Drawing by high temperature power 96.0KN (the drawing by high temperature temperature is 400 ℃), to amount to into the uiform section joint tensile strength be 377.4Mpa.
Claims (10)
1. the high strength connecting method of TiAl base alloy charging turbine and steel axle, it is characterized in that it is finished by following steps: a, on the outer wall of TiAl base alloy charging turbine connecting axle (1) threading (1-1), steel axle (2) is processed inner screw sheath (2-1) that matches with the external screw thread connecting axle of TiAl base alloy charging turbine (4) and the axial technology through hole (2-2) that communicates with inner screw sheath (2-1) along axis direction; B, on the inwall of inner screw sheath (2-1), apply AgCuNiLi solder paste (3), described AgCuNiLi solder paste (3) is that 9～11: 1 ratio is mixed to stir and made by AgCuNiLi solder powder and adhesive according to weight proportion, described AgCuNiLi solder powder is formed by following component and according to percentage by weight: Cu:22.5～29.5%, Ni:1.5～4.5%, Li:0.3～1.5%, Ag surplus, and described adhesive is that 1～3: 100 ratio is mixed to stir and made by hydroxyethylcellulose and distilled water according to weight proportion; C, the external screw thread connecting axle of described TiAl base alloy charging turbine (4) is screwed in the inner screw sheath (2-1) of steel axle (2), external screw thread (1-1) on the outer wall of the internal thread (2-1-1) of the inner screw sheath (2-1) of steel axle (2) and TiAl base alloy charging turbine connecting axle (1) adopts matched in clearance, and gap value is a Δ; D, TiAl base alloy charging turbine (4) and steel axle (2) assembled be placed on soldering under the Ar gas shiled, the soldering heating-up temperature is 860～950 ℃, and temperature retention time is 2～15min, and programming rate is 10～50 ℃/min.
2. the high strength connecting method of TiAl base alloy charging turbine according to claim 1 and steel axle, it is characterized in that in a step, processing closely-pitched external screw thread processes closely-pitched inner screw sheath that matches with the closely-pitched external screw thread connecting axle of TiAl base alloy charging turbine (4) and the axial technology through hole (2-2) that communicates with the closely-pitched inner screw sheath with steel axle (2) along axis direction on the outer wall of TiAl base alloy charging turbine connecting axle (1).
3. the high strength connecting method of TiAl base alloy charging turbine according to claim 1 and steel axle, it is characterized in that in a step that described TiAl base alloy charging turbine (4) is formed by following component and according to atomic percent: Ti:23～68%, Al:22～69%, V:1.0～3.0%, Cr:1.5～2.5%, Nb:1.5～2.5%.
4. the high strength connecting method of TiAl base alloy charging turbine according to claim 2 and steel axle, it is characterized in that in the b step, on the inwall of closely-pitched inner screw sheath, apply AgCuNiLi solder paste (3), described AgCuNiLi solder paste (3) is that 9: 1 ratio is mixed to stir and made by AgCuNiLi solder powder and adhesive according to weight proportion, described AgCuNiLi solder powder is formed by following component and according to percentage by weight: Cu:22.6%, Ni:4.4%, Li:0.9%, the Ag surplus, described adhesive is that 1: 100 ratio is mixed to stir and made by hydroxyethylcellulose and distilled water according to weight proportion.
5. the high strength connecting method of TiAl base alloy charging turbine according to claim 2 and steel axle, it is characterized in that in the b step, on the inwall of closely-pitched inner screw sheath, apply AgCuNiLi solder paste (3), described AgCuNiLi solder paste (3) is that 10: 1 ratio is mixed to stir and made by AgCuNiLi solder powder and adhesive according to weight proportion, described AgCuNiLi solder powder is formed by following component and according to percentage by weight: Cu:29.4%, Ni:1.6%, Li:0.3%, the Ag surplus, described adhesive is that 2: 100 ratio is mixed to stir and made by hydroxyethylcellulose and distilled water according to weight proportion.
6. the high strength connecting method of TiAl base alloy charging turbine according to claim 2 and steel axle, it is characterized in that in the b step, on the inwall of closely-pitched inner screw sheath, apply AgCuNiLi solder paste (3), described AgCuNiLi solder paste (3) is that 11: 1 ratio is mixed to stir and made by AgCuNiLi solder powder and adhesive according to weight proportion, described AgCuNiLi solder powder is formed by following component and according to percentage by weight: Cu:26.0%, Ni:3.0%, Li:1.4%, the Ag surplus, described adhesive is that 3: 100 ratio is mixed to stir and made by hydroxyethylcellulose and distilled water according to weight proportion.
7. the high strength connecting method of TiAl base alloy charging turbine according to claim 1 and steel axle, it is characterized in that in the b step that described AgCuNiLi solder paste (3) is the AgCuNiLi solder powder of 45～75 μ m and adhesive according to weight proportion by granularity is that 9～11: 1 ratio is mixed to stir and made.
8. the high strength connecting method of TiAl base alloy charging turbine according to claim 1 and steel axle, it is characterized in that in the c step that the gap value Δ that the external screw thread (1-1) on the outer wall of the internal thread (2-1-1) of the inner screw sheath (2-1) of steel axle (2) and TiAl base alloy charging turbine connecting axle (1) cooperates is 80～100 μ m.
9. the high strength connecting method of TiAl base alloy charging turbine according to claim 1 and steel axle is characterized in that in the d step that the soldering heating-up temperature is 900～930 ℃, and temperature retention time is 5～8min, and programming rate is 20～30 ℃/min.
10. the high strength connecting method of TiAl base alloy charging turbine according to claim 1 and steel axle is characterized in that in the d step that the soldering heating-up temperature is 910 ℃, and temperature retention time is 6min, and programming rate is 25 ℃/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100104016A CN100413636C (en) | 2005-09-29 | 2005-09-29 | High strength connecting method for TiAl base alloy charging turbine and steel shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100104016A CN100413636C (en) | 2005-09-29 | 2005-09-29 | High strength connecting method for TiAl base alloy charging turbine and steel shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1748931A CN1748931A (en) | 2006-03-22 |
| CN100413636C true CN100413636C (en) | 2008-08-27 |
Family
ID=36604690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100104016A Expired - Fee Related CN100413636C (en) | 2005-09-29 | 2005-09-29 | High strength connecting method for TiAl base alloy charging turbine and steel shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100413636C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2786827B1 (en) * | 2011-12-01 | 2020-01-01 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Turbine body |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI123783B (en) * | 2008-06-12 | 2013-10-31 | Waertsilae Finland Oy | A method of reconditioning a cylinder head for an internal combustion engine |
| CN103317307B (en) * | 2013-06-10 | 2015-10-21 | 中国北方发动机研究所(天津) | The bicircular arcs self-locking interference thread method of attachment of titanium aluminium turbine and rotating shaft and structure |
| CN103438058B (en) * | 2013-08-28 | 2016-02-24 | 中国北方发动机研究所(天津) | The thread interference locking linkage structure of titanium aluminium rotating shaft of supercharger turbine |
| CN103410877A (en) * | 2013-09-05 | 2013-11-27 | 中国北方发动机研究所(天津) | Method for connecting titanium aluminum turbine and steel shaft |
| CN105127534B (en) * | 2015-09-18 | 2017-05-03 | 吉林大学 | Brazing connecting method for tungsten-based powder alloy die |
| CN113649720A (en) * | 2021-07-20 | 2021-11-16 | 河北钢研德凯科技有限公司 | Composite connection method of titanium-aluminum alloy turbine and steel shaft |
| CN114888388B (en) * | 2022-06-20 | 2023-05-02 | 哈尔滨工业大学 | Method for brazing titanium alloy and nickel-based superalloy |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659245A (en) * | 1985-05-31 | 1987-04-21 | Nissan Motor Co., Ltd. | Gas turbine |
| US5064112A (en) * | 1988-11-11 | 1991-11-12 | Fuji Valve Co. | Jointing ti-a1 alloy member and structural steel member |
| JPH106042A (en) * | 1996-06-25 | 1998-01-13 | Ishikawajima Harima Heavy Ind Co Ltd | Friction-pressure-welding method for titanium aluminide-made turbine rotor |
| CN1183334A (en) * | 1997-12-26 | 1998-06-03 | 冶金工业部钢铁研究总院 | Method for connecting Ti-Al alloy turbine rotor with structure steel shaft |
| JPH11320132A (en) * | 1998-05-07 | 1999-11-24 | Mitsubishi Heavy Ind Ltd | Joining method for titanium-aluminum alloy member and constructive steel member, and joined part |
| US6007301A (en) * | 1996-10-18 | 1999-12-28 | Diado Steel Co., Ltd. | TiAl turbine rotor and method of manufacturing |
| JP2000202683A (en) * | 1999-01-05 | 2000-07-25 | Mitsubishi Heavy Ind Ltd | Joining member and turbine member |
| CN1461892A (en) * | 2002-05-31 | 2003-12-17 | 有限会社清水涡轮技术 | Method for connecting turbin shaft of turbocharger |
| US20040009072A1 (en) * | 2002-03-02 | 2004-01-15 | Daimlerchrysler Ag | Method for manufacturing a turbine wheel rotor |
| US20040057834A1 (en) * | 2001-02-09 | 2004-03-25 | Masami Shimizu | Connection method for turbo charger turbine shaft |
-
2005
- 2005-09-29 CN CNB2005100104016A patent/CN100413636C/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659245A (en) * | 1985-05-31 | 1987-04-21 | Nissan Motor Co., Ltd. | Gas turbine |
| US5064112A (en) * | 1988-11-11 | 1991-11-12 | Fuji Valve Co. | Jointing ti-a1 alloy member and structural steel member |
| JPH106042A (en) * | 1996-06-25 | 1998-01-13 | Ishikawajima Harima Heavy Ind Co Ltd | Friction-pressure-welding method for titanium aluminide-made turbine rotor |
| US6007301A (en) * | 1996-10-18 | 1999-12-28 | Diado Steel Co., Ltd. | TiAl turbine rotor and method of manufacturing |
| CN1183334A (en) * | 1997-12-26 | 1998-06-03 | 冶金工业部钢铁研究总院 | Method for connecting Ti-Al alloy turbine rotor with structure steel shaft |
| JPH11320132A (en) * | 1998-05-07 | 1999-11-24 | Mitsubishi Heavy Ind Ltd | Joining method for titanium-aluminum alloy member and constructive steel member, and joined part |
| JP2000202683A (en) * | 1999-01-05 | 2000-07-25 | Mitsubishi Heavy Ind Ltd | Joining member and turbine member |
| US20040057834A1 (en) * | 2001-02-09 | 2004-03-25 | Masami Shimizu | Connection method for turbo charger turbine shaft |
| US20040009072A1 (en) * | 2002-03-02 | 2004-01-15 | Daimlerchrysler Ag | Method for manufacturing a turbine wheel rotor |
| CN1461892A (en) * | 2002-05-31 | 2003-12-17 | 有限会社清水涡轮技术 | Method for connecting turbin shaft of turbocharger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2786827B1 (en) * | 2011-12-01 | 2020-01-01 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Turbine body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1748931A (en) | 2006-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100413636C (en) | High strength connecting method for TiAl base alloy charging turbine and steel shaft | |
| RU2389543C2 (en) | Corrosionproof fluid flow conducting parts and method to replace equipment and parts using corrosionproof fluid flow conducting parts | |
| Kimura et al. | Friction welding technique and joint properties of thin-walled pipe friction-welded joint between type 6063 aluminum alloy and AISI 304 austenitic stainless steel | |
| CN105945419A (en) | Friction deformation-triggered self-propagating assistant aluminum/steel friction stirring overlapping method | |
| CN103567666B (en) | Be applicable to titanium alloy soldering and Ti 2the strip brazing material of AlNb alloy brazed and preparation and method for welding | |
| EP1446261A1 (en) | Product and method for low temperature fluxless brazing | |
| CN103909378B (en) | A kind of ball mill normal shift large module gear optical-fiber laser manufacturing process again | |
| CN101214569A (en) | Method for brazing foamed aluminium | |
| CN108526692B (en) | Laser filler welding process for magnesium/aluminum dissimilar metal | |
| CN101972877A (en) | Contact reaction brazing connection method for TiAl based alloy and Ni based high-temperature alloy | |
| CN105965150A (en) | Friction stir welding method for different metal plates | |
| CN102581508A (en) | Intermediate-temperature zinc-aluminum soldering wire | |
| CN109332860B (en) | Arc additive manufacturing method of 5083 aluminum alloy/TC 4 titanium alloy structure | |
| Kim et al. | A review of arc brazing process and its application in automotive | |
| US6308882B1 (en) | Method for joining ductile iron and steel | |
| CN113857669A (en) | Laser welding method for titanium alloy and aluminum alloy dissimilar materials | |
| CN101992331B (en) | Vacuum brazing process for super-Ni laminated material and Cr18-Ni8 stainless steel | |
| Truppel et al. | Stability analysis of the cold metal transfer (CMT) brazing process for galvanized steel plates with ZnAl 4 filler metal | |
| CN105127534A (en) | Brazing connecting method for tungsten-based powder alloy die | |
| FR3015322A1 (en) | METHOD FOR PRODUCING A ROTOR AND ROTOR OBTAINED | |
| CN109773294A (en) | A kind of ultrasonic wave added semi-solid welding method of aluminium alloy and magnesium alloy | |
| CN105598543A (en) | Silicon-boron-containing interlayer alloy for bonding nickel-based high-temperature alloy or stainless steel and application thereof | |
| CN101966622B (en) | Laser welding and postweld heat treatment method for Tisub3/subAl-based alloy | |
| CN111299803A (en) | Aluminum interlayer-based magnesium/steel dissimilar material friction stir welding lap joint method | |
| CN106507723B (en) | A kind of titanium alloy low temperature brazing material, the preparation of solder and its using method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20120929 |