CN105364006A - Wax mold of large-size hollow shrouded blade casting pouring system and manufacturing method of wax mold - Google Patents
Wax mold of large-size hollow shrouded blade casting pouring system and manufacturing method of wax mold Download PDFInfo
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- CN105364006A CN105364006A CN201510918020.1A CN201510918020A CN105364006A CN 105364006 A CN105364006 A CN 105364006A CN 201510918020 A CN201510918020 A CN 201510918020A CN 105364006 A CN105364006 A CN 105364006A
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- wax
- ingate
- casting
- cross gate
- spherical feeder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
Abstract
The invention provides a wax mold of a large-size hollow shrouded blade casting pouring system and a manufacturing method of the wax mold. The wax mold comprises a casting wax mold and a runner wax mold; a core is arranged in the casting wax mold; a shroud inner gate is formed in the top of the casting wax mold, while a tenon inner gate is formed in the bottom of the casting wax mold; the runner wax mold comprises a first spherical riser of which the bottom is bonded to the top of the shroud inner gate and the top is connected to one end of a first horizontal runner; the other end of the first horizontal runner is connected to a straight runner; the top of the straight runner is bonded to a gate cup, while the bottom of the straight runner is connected to a second spherical riser; the second spherical riser is bonded to the tenon inner gate; the second spherical riser is connected to one end of a second horizontal runner, and the other end of the second horizontal runner is connected to the casting wax mold. According to the wax mold of the large-size hollow shrouded blade casting pouring system, the spherical risers and the corresponding runners are designed reasonably, such that smooth filling and effective feeding to a casting can be realized and the stress can be reduced; hence, the wax mold is applicable to produce large-size, hollow shrouded and complex-structure blades; the pouring difficulty can be reduced, such defects as core breakage, looseness and cracks of the casting can be avoided, and the product qualification rate can be increased.
Description
Technical field
The present invention relates to Investment casting technology field, particularly relate to a kind of wax-pattern and manufacture method thereof of large scale hollow arbor braid shroud blade casting moulding system.
Background technology
Combustion engine power turbine blade mostly is large-scale blades, wherein there are many superalloy turbine working-blades, band hat, hollow, complex structure, technical difficulty is large, manufacture the method that large-scale blades normally adopts model casting, first suppress casting wax mould, and above and below casting wax mould, ingate is set respectively, the top of sprue is located at by cup, the side of sprue is connected with cross gate and is connected to ingate, when pour steel, molten steel flows in casting shell molds along cross gate, form blade, but the foundry goods produced is due to feeding or fill the reasons such as type is unreasonable and can produce disconnected core, loose, the defects such as crackle, cause percent defective very high, qualification rate is low, and due to blade dimensions large, cast difficulty is large.
Therefore, the wax-pattern and the manufacture method thereof that design a kind of better large scale hollow arbor braid shroud blade casting moulding system is necessary, to solve the problem.
Summary of the invention
For prior art Problems existing, the invention provides a kind of by spherical feeder feeding, avoid wax-pattern and the manufacture method thereof of the large scale hollow arbor braid shroud blade casting moulding system of the defects such as disconnected core, loose, crackle.
To achieve these goals, the present invention adopts following technical scheme:
A kind of wax-pattern of large scale hollow arbor braid shroud blade casting moulding system, comprise casting wax mould and running channel wax-pattern, core is provided with in described casting wax mould, the top of described casting wax mould is provided with integral shroud ingate, bottom is provided with tenon ingate, described running channel wax-pattern comprises cup, sprue, first cross gate, second cross gate, first spherical feeder and the second spherical feeder, the bottom adhesive of described first spherical feeder is in the top of described integral shroud ingate, the top of described first spherical feeder is connected to one end of described first cross gate, the other end of described first cross gate is connected to described sprue, the top adhesive of described sprue has cup, the bottom of described sprue is connected to described second spherical feeder, described second spherical feeder is bonded in described tenon ingate, described second spherical feeder is connected to one end of described second cross gate, the other end of described second cross gate is connected to described casting wax mould.
Further, described second cross gate is provided with two, lays respectively at the relative both sides of described second spherical feeder and described tenon ingate connecting portion.
Further, described sprue is provided with necking down.
Further, be connected with reinforcement between described first cross gate and described cup, one end of described reinforcement is bonded in one end that described first cross gate is connected with described first spherical feeder, and the other end of described reinforcement is bonded in turning edge of described cup.
Further, the both sides up and down of described first spherical feeder are set to plane, bond respectively with described first cross gate and described integral shroud ingate.
Further, the lateral margin of described core has exhaust limit, described casting wax mould is exposed on described exhaust limit, the upper end of described core has core print and exposes described integral shroud ingate, the both side surface of described exhaust limit and described core print is coated with the paraffin wax white of 0.1mm ~ 0.2mm, the outlying end face from described casting wax mould of described exhaust is coated with the paraffin wax white of 0.5mm ~ 1.0mm, described core print is coated with the paraffin wax white of 0.3mm ~ 0.6mm away from the end face of described integral shroud ingate, and the upper surface of described core print is coated with the paraffin wax white of 0.5mm ~ 1.0mm.
Based on a manufacture method for the wax-pattern of above-mentioned large scale hollow arbor braid shroud blade casting moulding system, comprising:
Step one: suppress described wax-pattern, suppresses described casting wax mould, described integral shroud ingate, described tenon ingate, described first spherical feeder, described second spherical feeder, described first cross gate, described second cross gate, described sprue and described cup respectively according to casting structure;
Step 2: combine described wax-pattern, first described integral shroud ingate and described tenon ingate are bonded to respectively between two parties the upper/lower terminal of described casting wax mould, then described first spherical feeder is aligned described integral shroud ingate bonding, described second spherical feeder aligns described tenon ingate bonding, the described wax-pattern bondd is holded up, bond after having measured length described first cross gate, described second cross gate and described sprue respectively, and then bond described cup.
Further, between step one and step 2, free end is coated with to described core, the lateral margin of described core has exhaust limit, described casting wax mould is exposed on described exhaust limit, the upper end of described core has core print and exposes described integral shroud ingate, the paraffin wax white of 0.1mm ~ 0.2mm is coated in the both side surface on described core print and described exhaust limit, the paraffin wax white of 0.3mm ~ 0.6mm is coated away from the end face away from described integral shroud ingate at described core print, the paraffin wax white of 0.5mm ~ 1.0mm is coated in the upper surface of described core print, and the paraffin wax white of 0.5mm ~ 1.0mm is coated at the outlying end face from described casting wax mould of described exhaust.
Further, before described first spherical feeder of bonding and described second spherical feeder, first described first spherical feeder is scalded into plane with surface to be bonded in described second spherical feeder.
Further, bond after described cup, bond reinforcement between described cup and described first cross gate, and one end of described reinforcement is bonded in one end that described first cross gate is connected with described first spherical feeder, and the other end of described reinforcement is bonded in turning edge of described cup.
Beneficial effect of the present invention:
The bottom adhesive of the first spherical feeder is in the top of integral shroud ingate, the top of the first spherical feeder is connected to the first cross gate, the top of the second spherical feeder is connected to the bottom of sprue, the sidepiece of the second spherical feeder is bonded in tenon ingate, and appropriate design spherical feeder of the present invention and corresponding running channel can carry out Stable Filling and effective feeding to foundry goods and reduce stress.Adopt the wax-pattern of running gate system of the present invention for the production of large scale, hollow arbor braid hat, baroque blade, reduce cast difficulty, avoid foundry goods to produce the defects such as disconnected core, loose, crackle, improve product percent of pass.
Accompanying drawing explanation
Fig. 1 is the structural representation of the wax-pattern of large scale hollow arbor braid shroud blade casting moulding system of the present invention;
In figure, 1-casting wax mould, 2-integral shroud ingate, 3-tenon ingate, 4-exhaust limit, 5-core print, the 6-the first spherical feeder, the 7-the first cross gate, 8-sprue, 9-necking down, 10-cup, 11-reinforcement, the 12-the second spherical feeder, the 13-the second cross gate.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Need explanation, all directionality instruction (such as up, down, left, right, before and afters in the embodiment of the present invention ...) only for explaining the relative position relation, motion conditions etc. under a certain particular pose (as shown in drawings) between each parts, if when this particular pose changes, then directionality instruction also correspondingly changes thereupon.
In addition, relate to the description of " first ", " second " etc. in the present invention only for describing object, and instruction can not be interpreted as or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.
As Fig. 1, the wax-pattern that the invention provides a kind of large scale hollow arbor braid shroud blade casting moulding system comprises casting wax mould 1 and running channel wax-pattern, both close the wax-pattern forming running gate system at combination, running gate system of the present invention is applicable to the high temperature alloys such as K465, K428, K488, in order to make the blade of large scale hollow arbor braid integral shroud.
The top of casting wax mould 1 is provided with integral shroud ingate 2, bottom is provided with tenon ingate 3, core is provided with in casting wax mould 1, core part exposes casting wax mould 1, the lateral margin of core has exhaust limit 4 side direction and exposes casting wax mould 1, the basin on exhaust limit 4, back of the body both side surface is coated with the paraffin wax white of 0.1mm ~ 0.2mm, exhaust limit 4 is coated with the paraffin wax white of 0.5mm ~ 1.0mm away from the end face of casting wax mould 1, the upper end of core has core print 5 and exposes integral shroud ingate 2, the basin of core print 5, back of the body both side surface is coated with the paraffin wax white of 0.1mm ~ 0.2mm, core print 5 is coated with the paraffin wax white of 0.3mm ~ 0.6mm away from the end face of integral shroud ingate 2, the upper surface of core print 5 is coated with the paraffin wax white of 0.5mm ~ 1.0mm.
Running channel wax-pattern comprises cup 10, sprue 8, first cross gate 7, second cross gate 13, first spherical feeder 6, second spherical feeder 12 and reinforcement 11.The both sides up and down of the first spherical feeder 6 are set to plane, bond with the first cross gate 7 and integral shroud ingate 2 respectively, the bottom adhesive of the first spherical feeder 6 is in the top of integral shroud ingate 2, the top adhesive of the first spherical feeder 6 is in one end of the first cross gate 7, the other end of the first cross gate 7 is connected to sprue 8, sprue 8 is erect and is placed, the top adhesive of sprue 8 has cup 10, reinforcement 11 is connected with between cup 10 and the first cross gate 7, one end of reinforcement 11 is bonded in one end that the first cross gate 7 is connected with the first spherical feeder 6, the other end is bonded in turning edge of cup 10, the intensity of the first cross gate 7 and cup 10 can be strengthened by reinforcement 11, and play the effect of exhaust.The middle part of sprue 8 is provided with necking down 9, utilizes necking down 9 that the shrinkage stress of sprue 8 can be made to concentrate on herein, reduces the impact on foundry goods.The bottom of sprue 8 is connected to the second spherical feeder 12, the side of the second spherical feeder 12 is bonded in tenon ingate 3, the both sides of the second spherical feeder 12 are connected to one end of the second cross gate 13, the other end of the second cross gate 13 is connected to casting wax mould 1, second cross gate 13 is provided with two, lay respectively at the relative both sides of the second spherical feeder 12 and tenon ingate 3 connecting portion, the surface that second spherical feeder 12 and sprue 8, tenon ingate 3 and the second cross gate 13 bond all is set to plane, so that bonding.
In the present embodiment, arranged down by tenon ingate 3, be positioned at the bottom of wax-pattern foundry goods 1, and first spherical feeder 6 that bonds on the integral shroud ingate 2 at wax-pattern foundry goods 1 top, the tenon ingate 3 bottom wax-pattern foundry goods 1 bonds the second spherical feeder 12.Appropriate design spherical feeder and corresponding running channel, wherein the first spherical feeder 6 plays feeding effect, the second spherical feeder 12 plays feeding and has cushioning effect to the impact of pouring molten steel.Adopt the wax-pattern of running gate system of the present invention for the production of large scale, hollow arbor braid hat, baroque blade, casting stable filling type and effective feeding can be made and reduce stress, reduce cast difficulty, avoid foundry goods to produce the defects such as disconnected core, loose, crackle, improve product percent of pass.
The manufacture method of the wax-pattern of above-mentioned large scale hollow arbor braid shroud blade casting moulding system is as follows:
First design running gate system, design the parts such as cup 10, sprue 8, first cross gate 7, second cross gate 13, first spherical feeder 6, second spherical feeder 12, integral shroud ingate 2, tenon ingate 3 and reinforcement 11 respectively.Then according to Design of Runner System and mfg. moulding die.According to above-mentioned running gate system, and utilize mould to suppress wax-pattern, the wax-pattern of casting wax mould 1, integral shroud ingate 2, tenon ingate 3, first spherical feeder 6, second spherical feeder 12, first cross gate 7, second cross gate 13, sprue 8, cup 10 and reinforcement 11 is suppressed respectively according to casting structure.
After completing wax-pattern compacting, need to be coated with free end to core, core exposed the basin of the core print 5 of integral shroud ingate 2, carry on the back the paraffin wax white that both side surface coats 0.1mm ~ 0.2mm, core print 5 coats the paraffin wax white of 0.3mm ~ 0.6mm away from the end face of integral shroud ingate 2, the paraffin wax white of 0.5mm ~ 1.0mm is coated in the upper surface of core print 5, core is exposed the basin on the exhaust limit 4 of casting wax mould 1 side, back of the body both side surface coats the paraffin wax white of 0.1mm ~ 0.2mm, the paraffin wax white of 0.5mm ~ 1.0mm is coated away from the end face of casting wax mould in exhaust limit 4.
Then wax-pattern is combined, first integral shroud ingate 2 and tenon ingate 3 are bonded to respectively between two parties the upper/lower terminal of casting wax mould 1, ingate height is 15 ~ 35mm, width is less than the core width exposed, thickness needs to determine according to the size of casting wax mould, be generally 10 ~ 30mm, wherein tenon ingate 3 will be bonded to the back of casting wax mould 1.Then the first spherical feeder 6 is scalded into plane with surface to be bonded in the second spherical feeder 12, so that bonding, first spherical feeder 6 is aligned integral shroud ingate 2 bond, second spherical feeder 12 aligns tenon ingate 3 and bonds, the diameter of the first spherical feeder 6 and the second spherical feeder 12 is determined according to the size of casting wax mould 1, is generally ￠ 40mm ~ 80mm.Holded up by the wax-pattern bondd, bond after having measured length the first cross gate 7, second cross gate 13 and sprue 8 respectively, then at the top adhesive cup 10 of sprue 8.The last reinforcement 11 that bonds between cup 8 and the first cross gate 7, one end of reinforcement 11 is bonded in one end that the first cross gate 7 is connected with the first spherical feeder 6, and the other end of reinforcement 11 is bonded on turning edge of cup 10.
Shell is made after wax-pattern completes, then pouring molten steel is carried out, form foundry goods, wax-pattern of the present invention adopts the first spherical feeder 6 and the second spherical feeder 12, Stable Filling and abundant feeding can be carried out to foundry goods, and reduction shrinkage stress, avoid foundry goods to produce the defect of disconnected core, loose, crackle, improve product percent of pass.And the reinforcement 11 that bonds between the first cross gate 7 and cup 10, strengthen wax-pattern intensity, and play scavenging action.
Above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those skilled in the art are to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of the technical program, it all should be encompassed in right of the present invention.
Claims (10)
1. the wax-pattern of a large scale hollow arbor braid shroud blade casting moulding system, it is characterized in that, comprise: casting wax mould and running channel wax-pattern, core is provided with in described casting wax mould, the top of described casting wax mould is provided with integral shroud ingate, bottom is provided with tenon ingate, described running channel wax-pattern comprises cup, sprue, first cross gate, second cross gate, first spherical feeder and the second spherical feeder, the bottom adhesive of described first spherical feeder is in the top of described integral shroud ingate, the top of described first spherical feeder is connected to one end of described first cross gate, the other end of described first cross gate is connected to described sprue, the top adhesive of described sprue has cup, the bottom of described sprue is connected to described second spherical feeder, described second spherical feeder is bonded in described tenon ingate, described second spherical feeder is connected to one end of described second cross gate, the other end of described second cross gate is connected to described casting wax mould.
2. the wax-pattern of large scale hollow arbor braid shroud blade casting moulding system according to claim 1, is characterized in that: described second cross gate is provided with two, lays respectively at the relative both sides of described second spherical feeder and described tenon ingate connecting portion.
3. the wax-pattern of large scale hollow arbor braid shroud blade casting moulding system according to claim 1, is characterized in that: described sprue is provided with necking down.
4. the wax-pattern of large scale hollow arbor braid shroud blade casting moulding system according to claim 1, it is characterized in that: between described first cross gate and described cup, be connected with reinforcement, one end of described reinforcement is bonded in one end that described first cross gate is connected with described first spherical feeder, and the other end of described reinforcement is bonded in turning edge of described cup.
5. the wax-pattern of large scale hollow arbor braid shroud blade casting moulding system according to claim 1, is characterized in that: the both sides up and down of described first spherical feeder are set to plane, bonds respectively with described first cross gate and described integral shroud ingate.
6. the wax-pattern of large scale hollow arbor braid shroud blade casting moulding system according to claim 1, it is characterized in that: the lateral margin of described core has exhaust limit, described casting wax mould is exposed on described exhaust limit, the upper end of described core has core print and exposes described integral shroud ingate, the both side surface of described exhaust limit and described core print is coated with the paraffin wax white of 0.1mm ~ 0.2mm, the outlying end face from described casting wax mould of described exhaust is coated with the paraffin wax white of 0.5mm ~ 1.0mm, described core print is coated with the paraffin wax white of 0.3mm ~ 0.6mm away from the end face of described integral shroud ingate, the upper surface of described core print is coated with the paraffin wax white of 0.5mm ~ 1.0mm.
7., based on a manufacture method for the wax-pattern of large scale hollow arbor braid shroud blade casting moulding system according to claim 1, it is characterized in that, comprising:
Step one: suppress described wax-pattern, suppresses described casting wax mould, described integral shroud ingate, described tenon ingate, described first spherical feeder, described second spherical feeder, described first cross gate, described second cross gate, described sprue and described cup respectively according to casting structure;
Step 2: combine described wax-pattern, first described integral shroud ingate and described tenon ingate are bonded to respectively between two parties the upper/lower terminal of described casting wax mould, then described first spherical feeder is aligned described integral shroud ingate bonding, described second spherical feeder aligns described tenon ingate bonding, the described wax-pattern bondd is holded up, bond after having measured length described first cross gate, described second cross gate and described sprue respectively, and then bond described cup.
8. manufacture method according to claim 7, it is characterized in that: between step one and step 2, free end is coated with to described core, the lateral margin of described core has exhaust limit, described casting wax mould is exposed on described exhaust limit, the upper end of described core has core print and exposes described integral shroud ingate, the paraffin wax white of 0.1mm ~ 0.2mm is coated in the both side surface on described core print and described exhaust limit, the paraffin wax white of 0.3mm ~ 0.6mm is coated away from the end face away from described integral shroud ingate at described core print, the paraffin wax white of 0.5mm ~ 1.0mm is coated in the upper surface of described core print, and the paraffin wax white of 0.5mm ~ 1.0mm is coated at the outlying end face from described casting wax mould of described exhaust.
9. manufacture method according to claim 7, is characterized in that: before described first spherical feeder of bonding and described second spherical feeder, first described first spherical feeder is scalded into plane with surface to be bonded in described second spherical feeder.
10. manufacture method according to claim 7, it is characterized in that: after the described cup that bonds, bond reinforcement between described cup and described first cross gate, one end of described reinforcement is bonded in one end that described first cross gate is connected with described first spherical feeder, and the other end of described reinforcement is bonded in turning edge of described cup.
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| CN201510918020.1A CN105364006B (en) | 2015-12-09 | 2015-12-09 | The wax-pattern and its manufacture method of the hollow shrouded blade casting moulding system of large scale |
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| CN107243600A (en) * | 2017-04-01 | 2017-10-13 | 东风精密铸造安徽有限公司 | A kind of manufacturing process of the wax material module of investment-casting |
| CN107598097A (en) * | 2017-11-10 | 2018-01-19 | 东方电气集团东方汽轮机有限公司 | A kind of wax-pattern combination of turborotor and its fine casting method |
| CN107931544A (en) * | 2017-12-27 | 2018-04-20 | 安徽应流航源动力科技有限公司 | A kind of conjuncted hollow guide vane investment casting process |
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| CN107931544A (en) * | 2017-12-27 | 2018-04-20 | 安徽应流航源动力科技有限公司 | A kind of conjuncted hollow guide vane investment casting process |
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| CN110640084A (en) * | 2019-10-29 | 2020-01-03 | 贵州安吉航空精密铸造有限责任公司 | Preparation method of investment casting shell |
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Address after: 110043 Liaoning Province, Shenyang City District East Street No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Liaoning Province, Shenyang City District East Street No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |