DE2053013A1 - Process for the production of high-strength, extruded or extruded steel parts - Google Patents

Process for the production of high-strength, extruded or extruded steel parts

Info

Publication number
DE2053013A1
DE2053013A1 DE19702053013 DE2053013A DE2053013A1 DE 2053013 A1 DE2053013 A1 DE 2053013A1 DE 19702053013 DE19702053013 DE 19702053013 DE 2053013 A DE2053013 A DE 2053013A DE 2053013 A1 DE2053013 A1 DE 2053013A1
Authority
DE
Germany
Prior art keywords
extruded
steel
carbon
strength
diffused
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.)
Pending
Application number
DE19702053013
Other languages
German (de)
Inventor
Cynl Sutton Coldfield Warwickshire Tranter Donald Frederick South Littleton Evesham Dawes (Groß britannien)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF International UK Ltd
Original Assignee
Joseph Lucas Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Joseph Lucas Ltd filed Critical Joseph Lucas Ltd
Publication of DE2053013A1 publication Critical patent/DE2053013A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/002—Extruding materials of special alloys so far as the composition of the alloy requires or permits special extruding methods of sequences
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/28—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in one step
    • C23C8/30—Carbo-nitriding
    • C23C8/32—Carbo-nitriding of ferrous surfaces

Description

Verfahren zur Herstellung von hochfesten, strang-oder fließgepressten Stahlteilen Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von hochfesten, strang- oder fließgepressten Stahlteilen. Erfindungsgemäß wird ein niedriggekohlter, unlegierter Stahl strang- bzw. fließgepresst und nachdem er dadurch die gewünschte Gestalt erhalten hat, mit Hilfe eines Diffusionsverfahrens an einem oder mehreren geeigneten Legierungselementen angereichert, wobei sich das oder die Legierungselemente chemisch mit dem unlegierten Stahl verbinden und die physikalischen Eigenschaften des Stahl,?egenstandes verbessern.Process for the production of high-strength, extruded or extruded Steel parts The invention relates to a method for the production of high-strength, extruded or extruded steel parts. According to the invention, a low-carbon, unalloyed steel extruded or extruded and after having obtained the desired Has been given shape with the help of a diffusion process on one or more enriched suitable alloying elements, wherein the alloying element or elements chemically combine with the carbon steel and the physical properties of steel, object to improve.

Beispielsweise wird das Verfahren gemäß der Erfindung so durchgeführt, daß ein Stahlgeenstand durch Strang- oder Fließpressen in bekannter Weise in die gewünschte Form gebracht wird, worauf dieser Gegenstand in einer Atmosphäre erhitzt wird, die vorbestimmte Gehalte an Kohlenstoff' und Stickstoff besitzt. Der Kohlenstoff führt nach dieser Aufkohlung zu einer Festigkeitssteigerung des weichen Stahles.For example, the method according to the invention is carried out so that a Stahlgeenstand by extrusion or extrusion in a known manner in the desired shape is brought, whereupon this object is heated in an atmosphere which has predetermined levels of carbon and nitrogen. The carbon after this carburization leads to an increase in the strength of the soft steel.

Der Gehalt an Kohlenstoff in der Atmosphäre, der notwendig ist, um die gewünschte Festigkeit im Endprodukt zu erzielen, hängt von dem Maße ab, mit dem der Kohlenstoff in den weichen Stahl eindiffundiert wird und von dem Maße der chemischen Reaktion zwischen dem Kohlenstoff und dem weichen Stahl ab.The amount of carbon in the atmosphere that is necessary to Achieving the desired strength in the end product depends on the dimensions with that the carbon is diffused into the soft steel and the extent of the chemical reaction between the carbon and the soft steel.

Die Zugabe von Stickstoff zu der Diffusionsatmosphäre beruht auf Uberlegungen über die Härtbarkeit und ist abhängig von den Abmessungen eines Stahigegenstandes.The addition of nitrogen to the diffusion atmosphere is based on deliberations about the hardenability and depends on the dimensions of a steel object.

Beispielsweise sind bei der Anwendung des Verfahrens auf einen strang- oder fließgepressten Stahlgegenstand von 1,oo mm Durchmesser aus niedriggekohltem, unlegiertem Stahl zur Erzielung einer Zugfestigkeit von 157,5 kg/mm2 die folgenden Parameter zweckmäßig: Temperatur; 850 - loooOC Erhitzungsdauer: 8 bis 24 Stunden Gehalt an Kohlenstoff in der Glüh- o,8 - o,4 ß atmosphäre: Gehalt an Stickstoff in der Glüh- o,15 - o,4 % atmosphäre: Andere Elemente als Kohlenstoff und Stickstoff können zur Legierung des niedriggekohlten, unlegierten Stahles benutzt werden, um die physikalischen Eigenschaften zu verbessern, z.B. Nickel, Chrom, Bor und Mangan.For example, when applying the method to a strand- or extruded steel object of 1, oo mm diameter from low-carbon, carbon steel to achieve a tensile strength of 157.5 kg / mm2, the following Appropriate parameters: temperature; 850 - loooOC heating time: 8 to 24 hours Content of carbon in the glowing atmosphere. 8 - 0.4 ß: content of nitrogen In the glowing 0.15 - 0.4% atmosphere: Elements other than carbon and nitrogen can be used to alloy low-carbon, unalloyed steel to improve physical properties, e.g. nickel, chromium, boron and manganese.

Die Auswahl dieser Legierungselemente richtet sich nach ihrer Fähigkeit, in den unlegierten Stahl einzudiffundieren und damit zu reagieren. Auch zwei oder mehrere Legierungselemente können zur Steigerung der physikalischen Eigenschaften herangezogen werden und diese Elemente entweder einzeln oder gleichzeitig eindiffundiert werden.The selection of these alloying elements depends on their ability to to diffuse into the unalloyed steel and react with it. Also two or Several alloying elements can be used to increase physical properties are used and these elements are diffused either individually or simultaneously will.

Auch kann eine Endwärmebehandlung oder Oberflächenhärtun mit der Diffusionsbehandlung verbunden werden oder getrennt von der Diffusionabehandlung nachträglich vorgenommen werden. Auf diese Weise können Stähle in Form von strang- bzw. fließgepressten Stahlteilen mit sehr hohen Festigkeitseigenschaften hergestellt werden, ohne große Strang- bzw. Fließpressen zu benötigen, und außerdem werden die sonst notwendigen Zwischenglühungen vermieden.A final heat treatment or surface hardening can also be done with the diffusion treatment be connected or carried out separately from the diffusion treatment afterwards will. In this way, steels can be in the form of extruded or extruded Steel parts with very high strength properties are made without large To need extrusion or extrusion, and also the otherwise necessary Intermediate annealing avoided.

Patentansprüche: Patent claims:

Claims (1)

Fa tentansprüche: 1. Verfahren zur Herstellung von strang- bzw. fließgepressten Stahlteilen besonders hoher Festigkeit, dadurch gekennzeichnet, daß ein niedriggekohlter, unlegierter Stahl durchStrang- oder gießpressen zu dem gewünschten Querschnitt verformt wird, und daß ein oder mehrere geeignete Legierungselemente in den gepressten Stahl eindiffundiert werden bis zur Erzielung der gewünschten Festigkeit. Fa tent claims: 1. Process for the production of extruded or extruded Steel parts of particularly high strength, characterized in that a low-carbon, unalloyed steel is formed into the desired cross-section by extrusion or casting and that one or more suitable alloying elements are incorporated into the pressed steel be diffused in until the desired strength is achieved. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß ein oder mehrere Legierungselemente aus der Gruppe Kohlenstoff, Stickstoff, Nickel, Chrom, Bor und Mangan eindiffundiert werden.2. The method according to claim 1, characterized in that one or several alloy elements from the group carbon, nitrogen, nickel, chromium, Boron and manganese are diffused in. 5. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß Kohlenstoff und Stickstoff in den strang- oder fließgepressten Stahl eindiffundiert werden.5. The method according to any one of claims 1 or 2, characterized in that that carbon and nitrogen diffuses into the extruded or extruded steel will. 4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zwei oder mehrere Legierungselemente nacheinander eindiffundiert werden und im Stahlteil durch Diffusion verteilt werden.4. The method according to any one of the preceding claims, characterized in that that two or more alloy elements are successively diffused and be distributed in the steel part by diffusion. 5. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß zwei oder mehrere Legierungselemente gleichzeitig eindiffundiert werden.5. The method according to any one of claims 1 to 5, characterized in that that two or more alloy elements are diffused in at the same time.
DE19702053013 1969-10-31 1970-10-29 Process for the production of high-strength, extruded or extruded steel parts Pending DE2053013A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5345869 1969-10-31

Publications (1)

Publication Number Publication Date
DE2053013A1 true DE2053013A1 (en) 1971-05-13

Family

ID=10467888

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702053013 Pending DE2053013A1 (en) 1969-10-31 1970-10-29 Process for the production of high-strength, extruded or extruded steel parts

Country Status (4)

Country Link
DE (1) DE2053013A1 (en)
FR (1) FR2065334A5 (en)
GB (1) GB1318887A (en)
ZA (1) ZA706578B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242151A (en) * 1978-10-25 1980-12-30 Creusot-Loire Chromizing of steels by gaseous method
EP0058278A1 (en) * 1980-12-10 1982-08-25 LUCAS INDUSTRIES public limited company Link and windscreen wiper mechanism including same
FR2551499A1 (en) * 1983-09-06 1985-03-08 Ae Plc PROCESS FOR PRODUCING SOFT STEEL SHAPES FOR CYLINDERS OF INTERNAL COMBUSTION ENGINES

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3745971B2 (en) 2001-03-21 2006-02-15 本田技研工業株式会社 Steel material
WO2002075013A1 (en) 2001-03-21 2002-09-26 Honda Giken Kogyo Kabushiki Kaisha Steel material and method for preparation thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242151A (en) * 1978-10-25 1980-12-30 Creusot-Loire Chromizing of steels by gaseous method
EP0058278A1 (en) * 1980-12-10 1982-08-25 LUCAS INDUSTRIES public limited company Link and windscreen wiper mechanism including same
US4477293A (en) * 1980-12-10 1984-10-16 Lucas Industries Limited Link and windscreen wiper mechanism
FR2551499A1 (en) * 1983-09-06 1985-03-08 Ae Plc PROCESS FOR PRODUCING SOFT STEEL SHAPES FOR CYLINDERS OF INTERNAL COMBUSTION ENGINES
TR23244A (en) * 1983-09-06 1989-07-21 Ae Plc CYLINDER SHIPES

Also Published As

Publication number Publication date
ZA706578B (en) 1971-05-27
FR2065334A5 (en) 1971-07-23
GB1318887A (en) 1973-05-31

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