EP0216044B2 - Procédé de fabrication de bandes en acier résistant au vieillissement et apte au formage à froid - Google Patents
Procédé de fabrication de bandes en acier résistant au vieillissement et apte au formage à froid Download PDFInfo
- Publication number
- EP0216044B2 EP0216044B2 EP86109521A EP86109521A EP0216044B2 EP 0216044 B2 EP0216044 B2 EP 0216044B2 EP 86109521 A EP86109521 A EP 86109521A EP 86109521 A EP86109521 A EP 86109521A EP 0216044 B2 EP0216044 B2 EP 0216044B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- max
- steel
- rolling
- cold
- maximum
- 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 - Lifetime
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Classifications
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
- C21D8/0426—Hot rolling
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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
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/041—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing involving a particular fabrication or treatment of ingot or slab
Definitions
- the invention relates to a method for producing an aging-resistant steel strip with high cold formability.
- Cold rolled steel strip is widely used for the production of cold formed products.
- different properties characteristics (characteristic values) are required, whereby in all cases of high deformation, low yield strengths and high elongation at break values are advantageous.
- a high strengthening exponent n m is also sought for stretch-drawing processes and for deep-drawing stress, especially when producing complicated parts, for. B. of automobile bodies, the value of the vertical anisotropy r m should also be as high as possible.
- EP-A-108 268 describes a process for the production of cold-rolled strip with the highest deep-drawability, which contains the use of low slab preheating temperatures below 1170 ° C. as a measure, but the subject of this document is IF steel with the lowest C - held by max. 0.007% C and the need to add Ti and niobium is limited.
- the favorable effect of the low preheating temperatures is linked to the presence of (Ti.Nb) C.
- DE-OS 31 38 302 describes a process for producing cold-rolled high-strength steel strip from a steel which has a high phosphorus content of 0.05 to 0.10% by weight. It is proposed that the steel slabs be heated to a maximum of 1,200 ° C or in the range 1,200 to 1,000 ° C.
- the desired tensile limits are, as Table 2 shows, over 20 kp / mm, which means that according to this state of the art the production of age-resistant steel strips with maximum cold formability has not yet been satisfactorily resolved, and this known method in particular also fulfills the wishes for exclusively Use of continuous production processes with increased economy and improved properties of the finished products, differentiated according to the respective deformation process, material stresses and characteristics not met.
- the finish hot rolling is preferably above a 3.
- EP-A-101 740 discloses the production of age-resistant steel which is easy to deform and which is vacuum-treated, including 0.001% C, 0.02% Si, 0.15% Mn, 0.1% P, 0.007% S, 0.001% N and 0.056% Al, remainder iron in addition to contamination by hot rolling in eleven passes, starting at a temperature of 1000 ° C. and ending at 670 ° C., cold rolling, recrystallizing annealing and skin passaging, an elastic limit of approx. 137N / mm 2 being reached.
- the object of the invention is therefore to create a method for producing an aging-resistant cold-rolled steel strip which has the highest cold-formability properties, without the need for vacuum treatment or the addition of alloying elements such as titanium, niobium or vanadium.
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 Sheet Steel (AREA)
Claims (7)
- Procédé pour la fabrication de feuillard d'acier résistant au vieillissement, avec une grande aptitude au formage à froid, par laminage de feuillard à chaud, laminage à froid, recuit de recristallisation et dressage ultérieur, dans lequel des aciers présentant la composition suivante (% en masse)0,02 à 0,06 % Cmax. 0,10 % Simax. 0,40 % Mnmax. 0,03 % Pmax. 0,03 % Smax. 0,01 % Nau moins l'un des éléments du groupe suivant0 - 0,10 % Al,0 - 0,006 % Bimpuretés dues à l'élaborationreste fersont coulés en brames, chauffés avant le laminage à chaud à des températures de 1000 à maximum 1200 °C et sont soumis à laminage de finition à chaud à une température inférieure à A3, la réduction d'épaisseur sous A3 étant au moins de 35% de l'épaisseur lors du passage de A3, mis en bobines, laminés à froid et, ensuite, soumis à un recuit de recristallisation pour atteindre une limite d'élasticité de 200N/mm2 au plus.
- Procédé selon la revendication 1, caractérisé en ce que les aciers contiennent au maximum 0,05% de Si.
- Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que les aciers contiennent au maximum 0,006% de N.
- Procédé selon l'une des revendications précédentes, caractérisé en ce que l'acier est chauffé avant le laminage à chaud à une température de 1150°C au plus et, en particulier, de 1100°C au plus, mais néanmoins supérieure à 1000°C.
- Procédé selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'acier subit un recuit de recristallisation après le laminage à froid, dans un four à passage continu pour feuillards.
- Procédé selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'acier est soumis à un traitement de survieillissement de courte durée, comportant un revenu dans la gamme des températures d'environ 250 à 450°C, et avant le dressage.
- Procédé selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'acier laminé à froid est recuit en continu et est pourvu ensuite, et en particulier tout de suite après, d'un revêtement métallique appliqué au trempé.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86109521T ATE104362T1 (de) | 1985-08-10 | 1986-07-11 | Verfahren zum herstellen eines alterungsbestaendigen bandstahles mit hoher kaltumformbarkeit. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3528782 | 1985-08-10 | ||
DE19853528782 DE3528782A1 (de) | 1985-08-10 | 1985-08-10 | Verfahren zum herstellen eines alterungsbestaendigen bandstahles mit hoher kaltumformbarkeit |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0216044A2 EP0216044A2 (fr) | 1987-04-01 |
EP0216044A3 EP0216044A3 (en) | 1989-06-14 |
EP0216044B1 EP0216044B1 (fr) | 1994-04-13 |
EP0216044B2 true EP0216044B2 (fr) | 1997-09-03 |
Family
ID=6278246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86109521A Expired - Lifetime EP0216044B2 (fr) | 1985-08-10 | 1986-07-11 | Procédé de fabrication de bandes en acier résistant au vieillissement et apte au formage à froid |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0216044B2 (fr) |
AT (1) | ATE104362T1 (fr) |
DE (2) | DE3528782A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2810245B2 (ja) * | 1991-01-25 | 1998-10-15 | 日本鋼管株式会社 | プレス成形性および燐酸塩処理性に優れた冷延鋼板およびその製造方法 |
JP3422612B2 (ja) * | 1996-01-19 | 2003-06-30 | Jfeスチール株式会社 | 極低炭素冷延鋼板の製造方法 |
DE19701443A1 (de) * | 1997-01-17 | 1998-07-23 | Thyssen Stahl Ag | Stahl |
DE19740148C1 (de) * | 1997-09-12 | 1999-07-15 | Thyssenkrupp Stahl Ag | Verfahren zur Herstellung von beulfesten einbrennlackierten Bauteilen aus alterungsempfindlichem Stahl |
DE19834361A1 (de) * | 1998-07-30 | 2000-02-03 | Schaeffler Waelzlager Ohg | Bauteil, insbesondere Wälzlager- und Motorenbauteil |
DE19840788C2 (de) * | 1998-09-08 | 2000-10-05 | Thyssenkrupp Stahl Ag | Verfahren zur Erzeugung von kaltgewalzten Bändern oder Blechen |
DE19946889C1 (de) * | 1999-09-30 | 2000-11-09 | Thyssenkrupp Stahl Ag | Verfahren zum Erzeugen von alterungsbeständigen Bändern aus einem aluminiumberuhigten Stahl |
DE10020118B4 (de) | 2000-04-22 | 2009-11-12 | Schaeffler Kg | Wälzlagerbauteil |
CN107099648A (zh) * | 2017-06-27 | 2017-08-29 | 中国航空工业集团公司沈阳飞机设计研究所 | 激光沉积成形a‑100钢的组织性能均匀化热处理方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7412582A (nl) * | 1974-09-24 | 1976-03-26 | Armco Steel Corp | Werkwijze voor de vervaardiging van koudgewalst en ontlaten staalplaat. |
JPS5849627B2 (ja) * | 1979-02-27 | 1983-11-05 | 川崎製鉄株式会社 | 非時交性冷延鋼板の製造方法 |
JPS56166330A (en) * | 1980-04-25 | 1981-12-21 | Nippon Steel Corp | Manufacture of cold rolled steel plate for deep drawing by continuous annealing |
JPS5857492B2 (ja) * | 1980-09-25 | 1983-12-20 | 新日本製鐵株式会社 | 自動車用高強度冷延鋼板の製造方法 |
EP0072874B1 (fr) * | 1981-08-25 | 1985-05-29 | Nippon Steel Corporation | Installation à double function pour la fabrication d'une tôle d'acier laminée à froid et revêtue à chaud |
JPS6045689B2 (ja) * | 1982-02-19 | 1985-10-11 | 川崎製鉄株式会社 | プレス成形性にすぐれた冷延鋼板の製造方法 |
US4504326A (en) * | 1982-10-08 | 1985-03-12 | Nippon Steel Corporation | Method for the production of cold rolled steel sheet having super deep drawability |
US4473411A (en) * | 1983-07-20 | 1984-09-25 | Armco Inc. | Process of making aluminum killed low manganese deep drawing steel |
-
1985
- 1985-08-10 DE DE19853528782 patent/DE3528782A1/de active Granted
-
1986
- 1986-07-11 DE DE3689781T patent/DE3689781D1/de not_active Expired - Fee Related
- 1986-07-11 AT AT86109521T patent/ATE104362T1/de not_active IP Right Cessation
- 1986-07-11 EP EP86109521A patent/EP0216044B2/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0216044A2 (fr) | 1987-04-01 |
DE3528782A1 (de) | 1987-02-19 |
DE3528782C2 (fr) | 1990-06-13 |
DE3689781D1 (de) | 1994-05-19 |
EP0216044A3 (en) | 1989-06-14 |
EP0216044B1 (fr) | 1994-04-13 |
ATE104362T1 (de) | 1994-04-15 |
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