CA2697794A1 - Steel for the production of solidly formed machine components - Google Patents
Steel for the production of solidly formed machine components Download PDFInfo
- Publication number
- CA2697794A1 CA2697794A1 CA2697794A CA2697794A CA2697794A1 CA 2697794 A1 CA2697794 A1 CA 2697794A1 CA 2697794 A CA2697794 A CA 2697794A CA 2697794 A CA2697794 A CA 2697794A CA 2697794 A1 CA2697794 A1 CA 2697794A1
- Authority
- CA
- Canada
- Prior art keywords
- component according
- accelerated
- controlled cooling
- forming heat
- heat amounts
- 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.)
- Abandoned
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 8
- 239000010959 steel Substances 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 8
- 238000010276 construction Methods 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 3
- 238000003672 processing method Methods 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims description 18
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000005242 forging Methods 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims description 2
- 150000001247 metal acetylides Chemical class 0.000 claims description 2
- 150000004767 nitrides Chemical class 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- 230000000930 thermomechanical effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract 1
- 238000009628 steelmaking Methods 0.000 abstract 1
Classifications
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic hardening
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Forging (AREA)
Abstract
The invention relates to a steel and a processing method for producing machine components formed from solid stock, particularly for vehicle construction, having a primarily bainitic structure, characterized in that the chemical composition thereof has the following contents in weight percent:
0.10%
<=C <=50.25%, 0.15% <=Si <=0.40%, 1.00% <=Mn <=51.50%, 1.00% <=Cr <=2.00%, 0.20% <=Ni <=0.40%, 0.05% <=Mo <=0.20%, 0.010%
<=Nb <=0.040%, 0.05% <=V <=
0.25%, 0.01 %<=Al <=0.05%, 0.005% <=N <=0.025%, 0%
<=B <=0.0050%, with the remainder being iron and the steel making-related accompanying elements and residual materials.
0.10%
<=C <=50.25%, 0.15% <=Si <=0.40%, 1.00% <=Mn <=51.50%, 1.00% <=Cr <=2.00%, 0.20% <=Ni <=0.40%, 0.05% <=Mo <=0.20%, 0.010%
<=Nb <=0.040%, 0.05% <=V <=
0.25%, 0.01 %<=Al <=0.05%, 0.005% <=N <=0.025%, 0%
<=B <=0.0050%, with the remainder being iron and the steel making-related accompanying elements and residual materials.
Description
Steel for the production of solidly formed machine components The invention relates to a steel and to a processing method for the production of solidly formed machine components, particularly for vehicle construction, with a predominantly bainitic structure.
In this connection, it is provided, according to the invention, that the chemical composition has the follo nts, in weight percent:
0.10% <- C <- 0.25%
0.15% <- Si <- 0.40%
1.00% < Mn <- 1.50%
1.00% < Cr < 2.00%
0.20% < Ni < 0.40%
0.05% <- Mo < 0.20%
0.010% <- Nb < 0.040%
0.05% V < 0.25%
0.01% <- Al < 0.05%
0.005% < N <- 0.025%
0% <- B < 0.0050%
In this connection, it is provided, according to the invention, that the chemical composition has the follo nts, in weight percent:
0.10% <- C <- 0.25%
0.15% <- Si <- 0.40%
1.00% < Mn <- 1.50%
1.00% < Cr < 2.00%
0.20% < Ni < 0.40%
0.05% <- Mo < 0.20%
0.010% <- Nb < 0.040%
0.05% V < 0.25%
0.01% <- Al < 0.05%
0.005% < N <- 0.025%
0% <- B < 0.0050%
whereby the remainder consists of iron and the melting-related accompanying elements and residual substances.
A particularly advantageous composition is given by claim 2, whereby:
0.10% < C <- 0.20%
0.20% <- Si 0.30%
1.00% <- Mn <- 1.50%
1.50% <- Cr <- 2.00%
0.20% < Ni <- 0.40%
0.05% -< Mo <- 0.20%
0.020% < Nb <- 0.040%
0.05% < V <- 0.20%
0.01% Al <- 0.05%
0.005% N <- 0.025%
whereby the remainder consists of iron and the melting-related accompanying elements and residual substances.
A use of this steel, according to the invention, is given in the production of machine components, particularly for vehicle construction, whereby such components, after forging in a die 'WO 2009/026881 PCT/DE2008/001319 and after accelerated, controlled cooling have a bainitic structure, to a great extent, with precipitates of special carbides and/or nitrides.
In the case of components produced in this manner, according to claim 4, it is provided that the yield strength after accelerated, controlled cooling from the forming heat amounts to above 620 N/mm2.
In this connection, the tensile strength after accelerated, controlled cooling from the forming heat is supposed to amount to between 800 N/mm 2 and 1100 N/mm2, according to claim 5.
Preferably, the yield strength ratio after accelerated, controlled cooling from the forming heat amounts to above 70%.
According to claim 7, it is provided that the ultimate elongation after accelerated, controlled cooling from the forming heat amounts to above 10%.
According to claim 8, it is provided that the ultimate constriction after accelerated, controlled cooling from the forming heat amounts to above 40%.
A particularly advantageous composition is given by claim 2, whereby:
0.10% < C <- 0.20%
0.20% <- Si 0.30%
1.00% <- Mn <- 1.50%
1.50% <- Cr <- 2.00%
0.20% < Ni <- 0.40%
0.05% -< Mo <- 0.20%
0.020% < Nb <- 0.040%
0.05% < V <- 0.20%
0.01% Al <- 0.05%
0.005% N <- 0.025%
whereby the remainder consists of iron and the melting-related accompanying elements and residual substances.
A use of this steel, according to the invention, is given in the production of machine components, particularly for vehicle construction, whereby such components, after forging in a die 'WO 2009/026881 PCT/DE2008/001319 and after accelerated, controlled cooling have a bainitic structure, to a great extent, with precipitates of special carbides and/or nitrides.
In the case of components produced in this manner, according to claim 4, it is provided that the yield strength after accelerated, controlled cooling from the forming heat amounts to above 620 N/mm2.
In this connection, the tensile strength after accelerated, controlled cooling from the forming heat is supposed to amount to between 800 N/mm 2 and 1100 N/mm2, according to claim 5.
Preferably, the yield strength ratio after accelerated, controlled cooling from the forming heat amounts to above 70%.
According to claim 7, it is provided that the ultimate elongation after accelerated, controlled cooling from the forming heat amounts to above 10%.
According to claim 8, it is provided that the ultimate constriction after accelerated, controlled cooling from the forming heat amounts to above 40%.
According to claim 9, the notched-bar impact bending value (DVM
notch, room temperature) after accelerated, controlled cooling from the forming heat is supposed to amount to above 25 J.
According to claim 10, it is proposed that the impact strength characteristics can be adjusted by means of stepped cooling, at a high cooling velocity, at first, and a holding stage in the bainitic range, or subsequent aging treatment.
According to claim 11, the component is supposed to be suitable for case hardening and carbonitration.
Finally, the mechanical properties both in the rolled pre-material for forging and in the forged components are supposed to be adjusted by means of thermomechanical treatment.
notch, room temperature) after accelerated, controlled cooling from the forming heat is supposed to amount to above 25 J.
According to claim 10, it is proposed that the impact strength characteristics can be adjusted by means of stepped cooling, at a high cooling velocity, at first, and a holding stage in the bainitic range, or subsequent aging treatment.
According to claim 11, the component is supposed to be suitable for case hardening and carbonitration.
Finally, the mechanical properties both in the rolled pre-material for forging and in the forged components are supposed to be adjusted by means of thermomechanical treatment.
Claims (12)
1. Steel and processing method for the production of solidly formed machine components, particularly for vehicle construction, with a predominantly bainitic structure, which is characterized in that its chemical composition has the following contents, in weight percent:
0.10% <= C <= 0.25%
0.15% <= Si <= 0.40%
1.00% <= Mn <= 1.50%
1.00% <= Cr <= 2.00%
0.20% <= Ni <= 0.40%
0.05% <= Mo <= 0.20%
0.010% <= Nb <= 0.040%
0.05% <= V <= 0.25%
0.01% <= Al <= 0.05%
0.005% <= N <= 0.025%
0% <= B <= 0.0050%
whereby the remainder consists of iron and the melting-related accompanying elements and residual substances.
0.10% <= C <= 0.25%
0.15% <= Si <= 0.40%
1.00% <= Mn <= 1.50%
1.00% <= Cr <= 2.00%
0.20% <= Ni <= 0.40%
0.05% <= Mo <= 0.20%
0.010% <= Nb <= 0.040%
0.05% <= V <= 0.25%
0.01% <= Al <= 0.05%
0.005% <= N <= 0.025%
0% <= B <= 0.0050%
whereby the remainder consists of iron and the melting-related accompanying elements and residual substances.
2. Steel according to claim 1, which is characterized in that its chemical composition is such that the following applies:
0.10% <= C <= 0.20%
0.20% <= Si <= 0.30%
1.00% <= Mn <= 1.50%
1.50% <= Cr <= 2.00%
0.20% <= Ni <= 0.40%
0.05% <= Mo <= 0.20%
0.020% <= Nb <= 0.040%
0.05% <= V <= 0.20%
0.01% <= Al <= 0.05%
0.005% <= N <= 0.025%
whereby the remainder consists of iron and the melting-related accompanying elements and residual substances.
0.10% <= C <= 0.20%
0.20% <= Si <= 0.30%
1.00% <= Mn <= 1.50%
1.50% <= Cr <= 2.00%
0.20% <= Ni <= 0.40%
0.05% <= Mo <= 0.20%
0.020% <= Nb <= 0.040%
0.05% <= V <= 0.20%
0.01% <= Al <= 0.05%
0.005% <= N <= 0.025%
whereby the remainder consists of iron and the melting-related accompanying elements and residual substances.
3. Use of a steel according to claim 2 for the production of machine components, particularly for vehicle construction, which components, after forging in a die and after accelerated, controlled cooling, have a bainitic structure, to a great extent, with precipitates of special carbides and/or nitrides.
4. Component according to claim 3, characterized in that the yield strength after accelerated, controlled cooling from the forming heat amounts to above 620 N/mm2.
5. Component according to claim 4, characterized in that the tensile strength after accelerated, controlled cooling from the forming heat amounts to between 800 N/mm2 and 1100 N/mm2.
6. Component according to claim 5, characterized in that the yield strength ratio after accelerated, controlled cooling from the forming heat amounts to above 70%.
7. Component according to claim 6, characterized in that the ultimate elongation after accelerated, controlled cooling from the forming heat amounts to above 10%.
8 8. Component according to claim 7, characterized in that the ultimate constriction after accelerated, controlled cooling from the forming heat amounts to above 40%.
9. Component according to claim 8, characterized in that the notched-bar impact bending value (DVM notch, room temperature) after accelerated, controlled cooling from the forming heat amounts to above 25 J.
10. Component according to claim 9, characterized in that the impact strength characteristics can be adjusted by means of stepped cooling, at a high cooling velocity, at first, and a holding stage in the bainitic range, or subsequent aging treatment.
11. Component according to claim 10, characterized in that it is supposed to be suitable for case hardening and carbonitration.
12. Component according to claim 11, characterized in that the mechanical properties both in the rolled pre-material and in the forged component can be adjusted by means of thermomechanical treatment.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007040616.0 | 2007-08-27 | ||
| DE102007040616 | 2007-08-27 | ||
| PCT/DE2008/001319 WO2009026881A1 (en) | 2007-08-27 | 2008-08-12 | Steel for producing machine components formed from solid stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2697794A1 true CA2697794A1 (en) | 2009-03-05 |
Family
ID=40149548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2697794A Abandoned CA2697794A1 (en) | 2007-08-27 | 2008-08-12 | Steel for the production of solidly formed machine components |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US20100189591A1 (en) |
| EP (1) | EP2183396B1 (en) |
| JP (1) | JP2010537054A (en) |
| KR (1) | KR20100057823A (en) |
| CN (1) | CN101821413A (en) |
| AR (1) | AR067684A1 (en) |
| AT (1) | ATE537274T1 (en) |
| AU (1) | AU2008291431A1 (en) |
| CA (1) | CA2697794A1 (en) |
| DE (1) | DE102007057421A1 (en) |
| EA (1) | EA017741B1 (en) |
| ES (1) | ES2378353T3 (en) |
| MX (1) | MX2010002282A (en) |
| TW (1) | TW200927954A (en) |
| WO (1) | WO2009026881A1 (en) |
| ZA (1) | ZA201001002B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5620336B2 (en) * | 2011-05-26 | 2014-11-05 | 新日鐵住金株式会社 | Steel parts for high fatigue strength and high toughness machine structure and manufacturing method thereof |
| EP3176276B1 (en) * | 2014-07-29 | 2019-12-18 | Nippon Steel Corporation | Steel for carbonitrided bearing |
| JP2016145380A (en) * | 2015-02-06 | 2016-08-12 | 株式会社神戸製鋼所 | Steel for large sized forging and large sized forging component |
| CN113025777A (en) * | 2021-03-02 | 2021-06-25 | 攀钢集团江油长城特殊钢有限公司 | 30CrNi2MoVA large-size forged material and preparation method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3328211A (en) * | 1963-12-05 | 1967-06-27 | Ishikawajima Harima Heavy Ind | Method of manufacturing weldable, tough and high strength steel for structure members usable in the ashot-state and steel so made |
| JPS61279656A (en) * | 1985-06-05 | 1986-12-10 | Daido Steel Co Ltd | Non-heattreated steel for hot forging |
| JPH05148535A (en) * | 1991-06-07 | 1993-06-15 | Kobe Steel Ltd | Production of surface hardened parts having decreased heat treating strain and excellent bending fatigue strength |
| JPH09170047A (en) * | 1995-12-16 | 1997-06-30 | Daido Steel Co Ltd | Bainitic non-heat treated steel with high strength and high toughness and its production |
| CZ293084B6 (en) * | 1999-05-17 | 2004-02-18 | Jinpo Plus A. S. | Steel for creep-resisting and high-strength wrought parts, particularly pipes, plates and forgings |
| JP2000345281A (en) * | 1999-06-02 | 2000-12-12 | Nippon Steel Corp | Low alloy heat resistant steel excellent in weldability and low temperature toughness, and its production |
| US7081174B2 (en) * | 2002-04-30 | 2006-07-25 | Sanyo Special Steel Co., Ltd. | Process for producing steel products having improved grain size properties and machinability |
| DE102005052069B4 (en) * | 2005-10-28 | 2015-07-09 | Saarstahl Ag | Process for the production of semi-finished steel by hot working |
-
2007
- 2007-11-29 DE DE102007057421A patent/DE102007057421A1/en not_active Withdrawn
-
2008
- 2008-07-25 AR ARP080103228A patent/AR067684A1/en not_active Application Discontinuation
- 2008-08-11 TW TW097130489A patent/TW200927954A/en unknown
- 2008-08-12 KR KR1020107004006A patent/KR20100057823A/en not_active Application Discontinuation
- 2008-08-12 AU AU2008291431A patent/AU2008291431A1/en not_active Abandoned
- 2008-08-12 WO PCT/DE2008/001319 patent/WO2009026881A1/en active Application Filing
- 2008-08-12 CA CA2697794A patent/CA2697794A1/en not_active Abandoned
- 2008-08-12 EA EA201070313A patent/EA017741B1/en not_active IP Right Cessation
- 2008-08-12 AT AT08801149T patent/ATE537274T1/en active
- 2008-08-12 JP JP2010522179A patent/JP2010537054A/en not_active Withdrawn
- 2008-08-12 MX MX2010002282A patent/MX2010002282A/en active IP Right Grant
- 2008-08-12 CN CN200880104624A patent/CN101821413A/en active Pending
- 2008-08-12 US US12/733,312 patent/US20100189591A1/en not_active Abandoned
- 2008-08-12 ES ES08801149T patent/ES2378353T3/en active Active
- 2008-08-12 EP EP08801149A patent/EP2183396B1/en not_active Revoked
-
2010
- 2010-02-11 ZA ZA201001002A patent/ZA201001002B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA201001002B (en) | 2010-10-27 |
| EP2183396A1 (en) | 2010-05-12 |
| DE102007057421A1 (en) | 2009-03-05 |
| ATE537274T1 (en) | 2011-12-15 |
| MX2010002282A (en) | 2010-03-29 |
| ES2378353T3 (en) | 2012-04-11 |
| KR20100057823A (en) | 2010-06-01 |
| CN101821413A (en) | 2010-09-01 |
| JP2010537054A (en) | 2010-12-02 |
| EA201070313A1 (en) | 2010-08-30 |
| AR067684A1 (en) | 2009-10-21 |
| US20100189591A1 (en) | 2010-07-29 |
| EA017741B1 (en) | 2013-02-28 |
| WO2009026881A1 (en) | 2009-03-05 |
| AU2008291431A1 (en) | 2009-03-05 |
| EP2183396B1 (en) | 2011-12-14 |
| TW200927954A (en) | 2009-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 20140812 |