EP0085828B1 - Utilisation d'un acier contenant du carbone et manganèse pour pièces à haute résistance et tenacité par simple traitement thermique - Google Patents
Utilisation d'un acier contenant du carbone et manganèse pour pièces à haute résistance et tenacité par simple traitement thermique Download PDFInfo
- Publication number
- EP0085828B1 EP0085828B1 EP83100080A EP83100080A EP0085828B1 EP 0085828 B1 EP0085828 B1 EP 0085828B1 EP 83100080 A EP83100080 A EP 83100080A EP 83100080 A EP83100080 A EP 83100080A EP 0085828 B1 EP0085828 B1 EP 0085828B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel
- toughness
- components
- rest
- temperatures
- 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
Links
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
- C22C38/04—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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
Definitions
- DE-PS3009443 discloses the use of a specific steel for components which, in addition to being very strong, are also said to have considerable toughness, namely a notch impact energy measured at DVM at a yield point or 0.2 limit of 580 N / mm 2 . 35 J samples without having to be subjected to extensive heat treatment. The following is specified as the composition for steel which fulfills such conditions:
- Such a steel specified in said patent specification with relatively high proportions of vanadium, aluminum and nitrogen within the analysis limits is said to have a 0.2 limit of 578 N / mm 2 and a tensile strength of 865 when placed in air on a rod rolled to 155 mm ⁇ N / mm 2 and notched bar impact work measured on DVM samples of 35 J.
- the conversion rate can be further slowed down by one or more powers of ten.
- Micro additions of vanadium and aluminum and possibly also of zirconium and niobium in accordance with the nitrogen content result in nitride and carbonitride formation as crystallization nuclei for fine grain formation, a good distribution of the ferrite, and by precipitation hardening in the ferrite, an increase in the yield strength / breaking strength ratio and also an increase of firmness.
- Said process takes place in the case of a component which is cooled unaffected in room air from a final deformation temperature or annealing temperature of approximately 1,000 ° C., depending on the wall thickness or thickness of the component at a certain speed, which is caused by light blowing, for example by means of an air shower , can advantageously be shortened.
- such a steel is to be used for a component, the carbon and manganese content of which is primarily determined so that the desired strength can be achieved, whereby manganese can also be replaced to a certain extent by chromium.
- the fine-grain-forming and precipitation-hardening alloy components must also be coordinated with each other as well as with regard to the carbon and manganese content.
- so much boron and / or molybdenum must be added that, under the cooling conditions adapted to the dimensions and production conditions of the component with slow or faster cooling in still or moving air, such pearlization occurs as the desired toughness values require.
- the stated values indicate that with such a simply treated manganese steel, practically strength and toughness values can be achieved as with a tempered steel, the latter with the same dimensions (diameter 250 mm) to achieve the same strength and toughness values at least three times would have to be so highly alloyed with alloying elements such as chromium, nickel, molybdenum and others, which in their then necessary proportions, in contrast to those of the manganese steel used according to the invention, would considerably impair the later machinability of the component.
- the steel proposed according to the invention provides these advantages particularly in the production of components with larger cross sections of approximately 40 cm 2 onwards, such as crankshafts or camshafts of internal combustion engines and the like, alternatively stressed machine parts.
Claims (3)
baisse de dureté du bord au centre (pour la plus grande section transversale, soit 500 cm2) : seulement de 3 à 15%.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823201204 DE3201204C2 (de) | 1982-01-16 | 1982-01-16 | "Verwendung eines Kohlenstoff-Mangan-Stahles für Bauteile mit hoher Festigkeit und Zähigkeit bei einfacher Wärmebehandlung" |
DE3201204 | 1982-01-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0085828A1 EP0085828A1 (fr) | 1983-08-17 |
EP0085828B1 true EP0085828B1 (fr) | 1986-07-30 |
Family
ID=6153210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83100080A Expired EP0085828B1 (fr) | 1982-01-16 | 1983-01-07 | Utilisation d'un acier contenant du carbone et manganèse pour pièces à haute résistance et tenacité par simple traitement thermique |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0085828B1 (fr) |
JP (1) | JPS58123856A (fr) |
DE (1) | DE3201204C2 (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3320896C1 (de) * | 1983-06-09 | 1984-08-16 | Bayerische Motoren Werke AG, 8000 München | Steuereinrichtung einer Druckgießmaschine |
DE3434759A1 (de) * | 1984-09-21 | 1986-05-22 | M.A.N.-B & W Diesel GmbH, 8900 Augsburg | Verfahren zur herstellung von statisch und/oder dynamisch hochbelastbaren maschinenteilen |
DE3434743A1 (de) * | 1984-09-21 | 1986-04-03 | M.A.N.-B & W Diesel GmbH, 8900 Augsburg | Verfahren zur herstellung von stangenfoermigen maschinenteilen |
DE3434744A1 (de) * | 1984-09-21 | 1986-04-03 | M.A.N.-B & W Diesel GmbH, 8900 Augsburg | Verfahren zur herstellung von warmgewalzten stangen |
US4673433A (en) * | 1986-05-28 | 1987-06-16 | Uddeholm Tooling Aktiebolag | Low-alloy steel material, die blocks and other heavy forgings made thereof and a method to manufacture the material |
EP0348633A1 (fr) * | 1988-04-30 | 1990-01-03 | Qinghua University | Aciers auto-trempants à structure duplex bainite-martensite |
GB9116412D0 (en) * | 1990-08-03 | 1991-09-11 | Samsung Heavy Ind | High toughness non-refined steels and method for manufacturing them |
US5527401A (en) * | 1993-06-30 | 1996-06-18 | Samsung Heavy Industry Co., Ltd. | High toughness and high strength untempered steel and processing method thereof |
DE59607725D1 (de) * | 1996-03-06 | 2001-10-25 | Peddinghaus Carl Dan Gmbh | Stahlwerkstoff mit hoher warmfestigkeit zur herstellung von motorkolbenoberteilen |
WO1997033010A1 (fr) * | 1996-03-06 | 1997-09-12 | Carl Dan. Peddinghaus Gmbh & Co. Kg | Materiau d'acier a haute resistance thermique utile pour produire les parties superieures de pistons de moteurs |
CN103898408B (zh) * | 2014-01-24 | 2016-01-20 | 江苏省沙钢钢铁研究院有限公司 | 一种700MPa级螺纹钢筋及其生产方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB972533A (en) * | 1961-04-20 | 1964-10-14 | Esco Corp | Alloy steel |
GB1077994A (en) * | 1963-04-18 | 1967-08-02 | Kobe Steel Ltd | Process for producing cold-forged products from tempered steel wire |
BE706252A (fr) * | 1966-11-17 | 1968-05-08 | ||
FR2200847A5 (en) * | 1972-05-04 | 1974-04-19 | Ugine Aciers | Heat-treatable, surface-hardenable gear steel - containing carbon, silicon, manganese, chromium, molybdenum, and boron, and opt aluminium, vanadium, niobium, titanium, or nickel |
JPS5324892B2 (fr) * | 1972-10-19 | 1978-07-24 | ||
US3806378A (en) * | 1972-12-20 | 1974-04-23 | Bethlehem Steel Corp | As-worked bainitic ferrous alloy and method |
FR2339678A1 (fr) * | 1976-01-28 | 1977-08-26 | Ugine Aciers | Aciers a caracteristiques mecaniques ameliorees par additions controlees de b, al et n |
DE2610388C3 (de) * | 1976-02-07 | 1984-10-25 | Gerlach-Werke Gmbh, 6650 Homburg | Stahl als Ausgangswerkstoff für die formgebende Bearbeitung |
JPS52152814A (en) * | 1976-06-14 | 1977-12-19 | Nippon Steel Corp | Thermo-mechanical treatment of seamless steel pipe |
JPS54128918A (en) * | 1978-02-27 | 1979-10-05 | Kobe Steel Ltd | High tensile steel with superior flash butt weldability |
JPS5853708B2 (ja) * | 1979-03-15 | 1983-11-30 | 住友金属工業株式会社 | 衝合部靭性の優れた溶接鋼管 |
JPS5810444B2 (ja) * | 1979-03-28 | 1983-02-25 | 住友金属工業株式会社 | 耐水素誘起割れ性のすぐれた鋼板の製造法 |
DE2935690C2 (de) * | 1979-09-04 | 1984-10-18 | Kawasaki Steel Corp., Kobe, Hyogo | Verfahren zum Herstellen von Röhrenstahl |
DE3009443C2 (de) * | 1980-03-12 | 1981-11-19 | Thyssen Edelstahlwerke AG, 4000 Düsseldorf | Verwendung eines Stahls hoher Festigkeit und Zähigkeit |
JPS583949A (ja) * | 1981-06-30 | 1983-01-10 | Daido Steel Co Ltd | ツ−ルジヨイント用材料 |
-
1982
- 1982-01-16 DE DE19823201204 patent/DE3201204C2/de not_active Expired
-
1983
- 1983-01-07 EP EP83100080A patent/EP0085828B1/fr not_active Expired
- 1983-01-12 JP JP237483A patent/JPS58123856A/ja active Granted
Non-Patent Citations (2)
Title |
---|
Daimler-Benz-Liefervorschrift 4550, Fassung 7. 1975 * |
VDI-Z, Band 122, Nr. 17, September 1980, S. ENGINEER et al. "Entwicklungen auf dem Gebiet der Stähle für Gesenkschmiedestücke" Seiten 705-711 * |
Also Published As
Publication number | Publication date |
---|---|
JPH0551653B2 (fr) | 1993-08-03 |
EP0085828A1 (fr) | 1983-08-17 |
DE3201204C2 (de) | 1983-12-22 |
JPS58123856A (ja) | 1983-07-23 |
DE3201204A1 (de) | 1983-08-11 |
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