EP1681365B1 - Procédé de fabrication des composants fortement chargés - Google Patents
Procédé de fabrication des composants fortement chargés Download PDFInfo
- Publication number
- EP1681365B1 EP1681365B1 EP06450006A EP06450006A EP1681365B1 EP 1681365 B1 EP1681365 B1 EP 1681365B1 EP 06450006 A EP06450006 A EP 06450006A EP 06450006 A EP06450006 A EP 06450006A EP 1681365 B1 EP1681365 B1 EP 1681365B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- optionally
- gew
- accordance
- steel
- 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.)
- Not-in-force
Links
- 238000000034 method Methods 0.000 title claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 42
- 239000010959 steel Substances 0.000 claims description 42
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 38
- 229910052757 nitrogen Inorganic materials 0.000 claims description 22
- 238000010791 quenching Methods 0.000 claims description 22
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 230000000171 quenching effect Effects 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 238000005496 tempering Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000005242 forging Methods 0.000 claims description 5
- 238000009792 diffusion process Methods 0.000 claims description 4
- 239000000356 contaminant Substances 0.000 claims 4
- 235000019589 hardness Nutrition 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000005275 alloying Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 8
- 238000005255 carburizing Methods 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 5
- 229910052804 chromium Inorganic materials 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000000641 cold extrusion Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910000712 Boron steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001295925 Gegenes Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/613—Gases; Liquefied or solidified normally gaseous material
Definitions
- a transmission shaft of this kind is a central main component of a transmission, which is also exposed to extreme requirements. Such a shaft must absorb high shock-like moments, with a relatively small outer diameter. In addition, most are strong weakenings due to a notch effect, caused by oil longitudinal and transverse holes, grooves, etc., given.
- an alloy which contains 0.1 to 0.3% C, 0.3 to 2.0% Mn, at most 1.2% Cr, 0.01 to 0.06% Al, 0.004 to 0.02% N , a maximum of 50 ppm B, optionally a maximum of 0.3% Si, optionally a maximum of 0.03% P, optionally a maximum of 0.03% S and the balance iron.
- the invention aims to avoid the above-described disadvantages and difficulties and has as its object to provide a method for producing such high-duty machine parts, which can be brought in addition to a high core strength, even with larger wall thicknesses by case hardening to very high hardnesses in the surface region, and this at a negligible even for complicated machine parts delay.
- a good mechanical machinability by machining should be given.
- the produced steel itself should be inexpensive, namely by using inexpensive alloying elements and avoiding the very expensive alloying elements such as Mo, and also the contents of alloying elements should be as low as possible.
- the steel expediently has a C content before case hardening of between 0.26 and 0.30% by weight, and an Mn content of between 1.5 and 2% by weight.
- This optimally balanced composition of the alloying elements has the surprising effect that the hardenability of the material is extremely high even under the mildest quenching conditions. Due to the novelty of this alloy, the hardenability is of course also in the latest regulations (SEP1664, June 2004, "Determination of formulas by multiple regression to calculate the hardenability in the stimulus quenching test from the chemical composition of steels" + supplementary sheet to the SEP1664) not calculable, but only to characterize by practical experiments.
- the case hardening is expediently carried out in a temperature range between 880 and 1050 ° C., preferably between 900 and 950 ° C. during carburization with subsequent diffusion between 840 and 880 ° C., preferably at about 860 ° C., where a C is suitably used during case hardening Level of 0.7 to 1.2 wt.%, Preferably from 1.0 to 1.1 wt.% When carburizing and from 0.7 to 0.8 wt.% Is set when diffusing.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat Treatment Of Articles (AREA)
Claims (10)
- Procédé pour fabriquer une partie de machine pouvant être fortement sollicitée, comme un arbre de transmission, caractérisé par les étapes de procédé suivantes :- utilisation d'un acier présentant la composition chimique suivante :C : 0,20-0,50 % en poidsSi : 0,10-0,50 % en poidsMn : 0,12-3,5 % en poidsCr: ≤ 1,2 % en poidsP: ≤ 0,05 % en poidsB : 30-120 ppm ainsi que :éventuellement Ti : 0,020-0,07 % en poids éventuellement Ni : ≤ 1,0 % en poidsle reste du Fe et des impuretés dus à la fusion- fabrication d'une ébauche, de préférence par forgeage, rétreint ou extrusion- finition avec enlèvement de copeaux de la partie de machine,- cémentation de la partie de machine ayant subi une finition avec enlèvement de copaux et- trempe par- refroidissement brusque avec du gaz, de préférence avec de l'azote- et recuit.
- Procédé selon la revendication 1, caractérisé en ce qu'on utilise un acier présentant la composition chimique suivante :C : 0,26-0,46 % en poidsSi : 0,15-0,25 % en poidsMn : 1,4-3,0 % en poidsCr : 0,05-1% en poidsP: ≤ 0,02 % en poidsB : 35-60 ppm et :éventuellement Ti : 0,035-0,05 % en poidséventuellement Ni : < 0,15 %le reste du Fe et des impuretés dues à la fusion- la fabrication de l'ébauche s'effectuant par rétreint ou extrusion à froid.
- Procédé pour la fabrication d'une partie de machine pouvant être fortement sollicitée, comme un arbre de transmission, caractérisé par les étapes de procédé suivantes :- utilisation d'un acier présentant la composition chimique suivante :C : 0,20-0,50 % en poidsSi : 0,10-0,50 % en poidsMn : 0,5-3,5 % en poidsCr : 0,009-1,2 % en poidsP : ≤ 0,05 % en poidsB : 30-120 ppméventuellement Ti : 0,020-0,07 % en poids éventuellement Ni ≤ 1,0 % en poidsN : < 0,016 % en poids.Al : 0,015-0,04 % en poids, la teneur en Al étant au moins le double de la teneur en azote,S : 0,02-0,04 % en poidsle reste du Fe et des impuretés dues à la fusion- fabrication d'une ébauche, de préférence par forgeage, rétreint ou extrusion,- finition avec enlèvement de copeaux de la partie de machine- cémentation de la partie de machine ayant subi une finition avec enlèvement de copeaux et- trempe par- refroidissement brusque avec du gaz, de préférence avec de l'azote- et recuit.
- Procédé selon la revendication 3, caractérisé en ce qu'on utilise un acier présentant la composition chimique suivante :C : 0,20-0,50 % en poidsSi : 0,10-0,50 % en poidsMn : 1,4-3,0 % en poidsCr : 0,05-0,7% en poidsP : ≤ 0,05 % en poidsB : 40-80 ppméventuellement Ti : 0,020-0,07 % en poids éventuellement Ni : ≤ 1,0 % en poidsN : < 0,016 % en poids.Al : 0,015-0,04 % en poids, la teneur en Al étant au moins le double de la teneur en azote,S : 0,02-0,35 % en poidsle reste du Fe et des impuretés dues à la fusion.
- Procédé selon l'une quelconque ou plusieurs des revendications 1 à 4, caractérisé en ce que la cémentation s'effectue dans une plage de températures comprise entre 880 et 1050°C et de préférence entre 900 et 950°C lors de la carburation avec diffusion consécutive entre 840 et 880°C, de préférence à environ 860°C.
- Procédé selon l'une quelconque ou plusieurs des revendications 1 à 5, caractérisé en ce que pendant la cémentation, on règle un niveau C de 0,7 à 1,2 % en poids lors de la carburation et de 0, 7 à 0,8 % en poids lors de la diffusion.
- Procédé selon la revendication 6, caractérisé en ce que, pendant la cémentation, on règle un niveau C de 1,0 à 1, 1 % en poids lors de la carburation et de 0,7 à 0, 8 % en poids lors de la diffusion.
- Procédé selon l'une quelconque ou plusieurs des revendications 1 à 7, caractérisé en ce que la trempe s'effectue à partir d'une température d'environ 850 à 910°C, de préférence à partir d'environ 860°C.
- Procédé selon l'une quelconque ou plusieurs des revendications 1 à 8, caractérisé en ce que le recuit s'effectue sur une plage de températures de maximum 200°C, de préférence à une température d'environ 160°C.
- Procédé selon l'une quelconque ou plusieurs des revendications 1 à 9, caractérisé en ce que le refroidissement brusque est effectué avec une pression de gaz de 3 bars.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0001105U AT8065U1 (de) | 2005-01-14 | 2005-01-14 | Stahl für einsatzgehärtete hochbeanspruchbare maschinenteile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1681365A1 EP1681365A1 (fr) | 2006-07-19 |
| EP1681365B1 true EP1681365B1 (fr) | 2010-09-29 |
Family
ID=35406108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06450006A Not-in-force EP1681365B1 (fr) | 2005-01-14 | 2006-01-12 | Procédé de fabrication des composants fortement chargés |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1681365B1 (fr) |
| AT (1) | AT8065U1 (fr) |
| DE (1) | DE502006007937D1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210371947A1 (en) * | 2017-11-15 | 2021-12-02 | Sidenor Investigacion Y Desarrollo, S.A. | Alloyed steel and quenched and tempered steel |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2293837B1 (es) * | 2006-07-31 | 2009-04-01 | Sidenor Industrial, S.L. | Proceso de fabricacion de un acero, y acero obtenido en este proceso. |
| CN113981316B (zh) * | 2021-10-27 | 2022-07-19 | 温州天和汽车部件有限公司 | 一种高精度链轮冷挤压工艺 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR940002139B1 (ko) * | 1991-11-30 | 1994-03-18 | 삼성중공업 주식회사 | 침탄 기어 제조용 보론 처리강 |
| JPH0892690A (ja) * | 1994-09-27 | 1996-04-09 | Sumitomo Metal Ind Ltd | 耐疲労特性に優れた浸炭部品およびその製造方法 |
| JPH08311607A (ja) * | 1995-05-16 | 1996-11-26 | Sumitomo Metal Ind Ltd | 歯元曲げ強度に優れた低歪浸炭歯車およびその製造方法 |
-
2005
- 2005-01-14 AT AT0001105U patent/AT8065U1/de not_active IP Right Cessation
-
2006
- 2006-01-12 EP EP06450006A patent/EP1681365B1/fr not_active Not-in-force
- 2006-01-12 DE DE502006007937T patent/DE502006007937D1/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210371947A1 (en) * | 2017-11-15 | 2021-12-02 | Sidenor Investigacion Y Desarrollo, S.A. | Alloyed steel and quenched and tempered steel |
Also Published As
| Publication number | Publication date |
|---|---|
| AT8065U1 (de) | 2006-01-15 |
| EP1681365A1 (fr) | 2006-07-19 |
| DE502006007937D1 (de) | 2010-11-11 |
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