公开(公告)号：US20240141455A1

公开(公告)日：2024-05-02

申请号：US18280058

申请日：2022-03-03

Applicant: ThyssenKrupp Steel Europe AG

Inventor： Ekaterina Bocharova ,  Olga Sukhopar ,  Georg Paul ,  Stefan Woestmann

IPC: C21D9/48 ,  C21D1/18 ,  C21D6/00 ,  C21D8/04 ,  C22C33/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/02 ,  C23C2/06 ,  C23C2/40

CPC classification number: C21D9/48 ,  C21D1/18 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0405 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0463 ,  C21D8/0478 ,  C22C33/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/022 ,  C23C2/06 ,  C23C2/40 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008

Abstract: A cold-rolled flat steel product has a tensile strength of 750-940 MPa, a high strength, an improved weldability and optimized shaping properties, and can be produced at low cost. The cold-rolled flat steel product consists of a steel composed, in percent by mass, of C: 0.040-0.100%; Mn: 2.10-2.50%; Si: 0.10-0.40%; Cr: 0.30-0.90%; Ti: 0.020-0.080%, B: 0.0005-0.0020%; N: 0.003-0.010%; Al: up to 0.10%; Ca: up to 0.005%; P: up to 0.025%; S: up to 0.010%; optionally one or more of the following elements: Mo: up to 0.20%; Nb: up to 0.050%; Cu: up to 0.10%; V: up to 0.020%; Ni: up to 0.10%, the remainder being iron and unavoidable impurities, and total content of impurities is limited to at most 0.5% by mass and contents of phosphorus (“P”) and sulfur (“S”) belong to the impurities.

公开(公告)号：US20230265536A1

公开(公告)日：2023-08-24

申请号：US17922038

申请日：2021-12-21

Applicant: Hyundai Steel Company

Inventor： Sun Hwan KWON ,  Jin Sung Park ,  Hye Jin Kim

IPC: C21D9/46 ,  B32B15/01 ,  C21D8/04 ,  C21D6/00 ,  C22C38/38 ,  C22C38/28 ,  C22C38/22 ,  C22C38/06 ,  C22C38/02

CPC classification number: C21D9/46 ,  B32B15/013 ,  C21D8/0405 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0463 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C22C38/38 ,  C22C38/28 ,  C22C38/22 ,  C22C38/06 ,  C22C38/02

Abstract: The present invention provides an ultra high strength cold rolled steel sheet having excellent spot weldability and formability. The ultra high strength cold rolled steel sheet, according to one embodiment of the present invention, comprises, in weight percent,: 0.05% to 0.09% of carbon (C); 0.5% to 1.0% of silicon (Si); 2.0% to 2.8% of manganese (Mn); 0.2% to 0.5% of aluminum (Al); 0.8% to 1.2% of chromium (Cr); 0.05% to 0.10% of molybdenum (Mo); 0.03% to 0.06% of titanium (Ti); 0.001% to 0.003% of boron (B); 0.02% to 0.05% of antimony (Sb); 0.001% to 0.015% of phosphorus (P); more than 0% to 0.003% of sulfur (5); 0.004% to 0.006% of nitrogen (N); and a balance of iron (Fe) and other inevitable impurities, and the ultra high strength cold rolled steel sheet comprises a microstructure comprising ferrite and low hardness martensite.

公开(公告)号：US20180231311A1

公开(公告)日：2018-08-16

申请号：US15751002

申请日：2016-08-05

Applicant: SCHWARTZ GMBH

Inventor： Frank WILDEN ,  Jörg WINKEL ,  Andreas REINARTZ

IPC: F27B9/06 ,  C21D1/34 ,  C21D9/48 ,  C21D8/04 ,  F27D11/12

CPC classification number: F27B9/066 ,  C21D1/34 ,  C21D8/0405 ,  C21D9/48 ,  C21D2221/00 ,  F27B2009/122 ,  F27B2009/124 ,  F27D11/12

Abstract: Disclosed are methods and apparatus for impressing a temperature profile onto a sheet steel component, wherein in one or more first areas, a temperature below the AC3 temperature can be impressed on the sheet steel component, and in one or more second areas, a temperature above the AC3 temperature can be impressed on the sheet steel component, and is characterized in that the sheet steel component is firstly preheated in a production furnace, and is then transferred into the thermal re-treatment station, wherein a radiation heat source is moved over the component in the thermal re-treatment station, by means of which the one or more first areas of the sheet steel component can be kept at a temperature below the AC3 temperature or cooled down further, and the one or more second areas can be heated to or kept at a temperature above the AC3 temperature.

公开(公告)号：US20180147614A1

公开(公告)日：2018-05-31

申请号：US15824533

申请日：2017-11-28

Applicant: AK Steel Properties, Inc.

Inventor： John Andrew Roubidoux ,  Erasmus Amoateng

IPC: B21B1/02 ,  C22C38/32 ,  C22C38/26 ,  C22C38/04 ,  C22C38/02 ,  C21D9/46 ,  C21D8/02 ,  C21D6/00 ,  C21D1/18

CPC classification number: B21B1/02 ,  B21B2001/028 ,  C21D1/18 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0294 ,  C21D8/0405 ,  C21D9/46 ,  C21D9/48 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/44 ,  C22C38/48 ,  C22C38/54

Abstract: A method for processing a press hardenable steel includes first heating a slab of the press hardenable steel. The slab is heated to a re-heat furnace temperature of approximately 2300° F. The slab is subjected to rolling into a steel sheet having a predetermined thickness. The temperature of the slab during rolling corresponds to a rolling temperature that is greater than or equal to 1600° F. The steel sheet is coiled. The temperature of the steel sheet during coiling corresponds to a coiling temperature of approximately 1050° F.

公开(公告)号：US09822421B2

公开(公告)日：2017-11-21

申请号：US12798082

申请日：2010-03-29

Applicant: Martin Pohl ,  Michael Wibbeke ,  Wilfried Rostek

Inventor： Martin Pohl ,  Michael Wibbeke ,  Wilfried Rostek

IPC: B21D35/00 ,  C21D1/673 ,  B21D22/02 ,  B21D53/88 ,  C21D1/18 ,  C21D1/74 ,  C21D8/02 ,  C21D8/04 ,  C21D9/00 ,  C21D9/46 ,  C21D9/48 ,  C23C10/28

CPC classification number: C21D1/673 ,  B21D22/022 ,  B21D35/00 ,  B21D53/88 ,  C21D1/18 ,  C21D1/74 ,  C21D8/0205 ,  C21D8/0257 ,  C21D8/0405 ,  C21D9/0068 ,  C21D9/46 ,  C21D9/48 ,  C23C10/28

Abstract: A method for making a vehicle body component includes forming a generally flat plate of unhardened, hot-formable sheet steel with a marginal shape which corresponds essentially to the developed configuration of the finished vehicle body component. The formed plate is hot-formed and hardened in a single press tool to define a sheet profile which corresponds to the configuration of the finished vehicle body component, and a surface coating is applied to the sheet profile.

公开(公告)号：US09598755B2

公开(公告)日：2017-03-21

申请号：US13825236

申请日：2011-09-15

Applicant: Hideyuki Kimura ,  Kaneharu Okuda ,  Reiko Sugihara

Inventor： Hideyuki Kimura ,  Kaneharu Okuda ,  Reiko Sugihara

IPC: C23C2/02 ,  C21D8/04 ,  C21D9/48 ,  C23C2/06 ,  C23C2/28 ,  C22C38/00 ,  B32B15/01

CPC classification number: C23C2/02 ,  B32B15/013 ,  C21D8/0405 ,  C21D9/48 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/60 ,  C23C2/06 ,  C23C2/28

Abstract: A high-strength galvanized steel sheet contains C: 0.010% or more and 0.06% or less, Si: more than 0.5% and 1.5% or less, Mn: 1.0% or more and 3.0% or less, P: 0.005% or more and 0.1% or less, S: 0.01% or less, sol.Al: 0.005% or more and 0.5% or less, N: 0.01% or less, Nb: 0.010% or more and 0.090% or less, and Ti: 0.015% or more and 0.15% or less, on a mass percent basis. The Nb and C contents of the steel satisfy the relation of (Nb/93)/(C/12)

公开(公告)号：US20170029915A1

公开(公告)日：2017-02-02

申请号：US15101772

申请日：2013-12-27

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Koutarou HAYASHI

IPC: C21D9/46 ,  C21D3/04 ,  C21D1/673 ,  C22C38/38 ,  C22C38/06 ,  C22C38/08 ,  C22C38/02 ,  C22C38/00 ,  C22C38/16 ,  C22C38/12 ,  C22C38/14 ,  C21D8/04 ,  C22C38/04

CPC classification number: C21D9/46 ,  B21D22/022 ,  C21D1/18 ,  C21D1/673 ,  C21D3/04 ,  C21D8/0405 ,  C21D8/0436 ,  C21D8/0457 ,  C21D9/00 ,  C21D2211/005 ,  C21D2211/008 ,  C21D2221/00 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/38 ,  C22C38/58

Abstract: A hot-pressed steel sheet member includes a specific chemical composition and further includes a steel structure in which an area ratio of ferrite in a surface layer portion ranging from a surface to 15 μm in depth is greater than 1.20 times an area ratio of ferrite in an inner layer portion being a portion excluding the surface layer portion, and the inner layer portion contains a steel structure represented, in area %, ferrite: 10% to 70%, martensite: 30% to 90%, and a total area ratio of ferrite and martensite: 90% to 100%. A tensile strength of the hot-pressed steel sheet member is 980 MPa or more.

Abstract translation: 热压钢板构件具有特定的化学组成，并且还包括钢结构，其中表面层部分中的铁素体的表面与深度之间的面积比例大于铁素体的面积比的1.20倍 内层部分是除了表层部分之外的部分，内层部分包含表面积％的铁素体：10％至70％，马氏体：30％至90％，总面积比为 铁素体和马氏体：90％〜100％。 热压钢板构件的拉伸强度为980MPa以上。

公开(公告)号：US09540719B2

公开(公告)日：2017-01-10

申请号：US14006623

申请日：2012-03-23

Applicant: Astrid Perlade ,  Aurelie Milami ,  Florence Pechenot ,  Erik Stenback ,  Jean Marc Pipard ,  Farid E. Hassani

Inventor： Astrid Perlade ,  Aurelie Milami ,  Florence Pechenot ,  Erik Stenback ,  Jean Marc Pipard ,  Farid E. Hassani

IPC: B65G45/10 ,  B65G45/24 ,  C21D8/04 ,  C22C38/58 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  C23C2/02 ,  C23C2/06 ,  C21D6/00 ,  C22C38/00 ,  C22C38/06 ,  F27B9/24 ,  F27D3/02 ,  C21D8/02 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38 ,  C22C38/42 ,  C22C38/50

CPC classification number: C22C38/58 ,  B65G45/10 ,  B65G45/24 ,  C21D6/005 ,  C21D8/0263 ,  C21D8/04 ,  C21D8/0405 ,  C21D8/041 ,  C21D8/0426 ,  C21D8/0463 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38 ,  C22C38/42 ,  C22C38/50 ,  C23C2/02 ,  C23C2/06 ,  F27B9/243 ,  F27D3/026

Abstract: A hot rolled steel sheet with a yield stress greater than 690 MPa and less than or equal to 840 MPa, with strength between 780 MPa and 950 MPa, elongation at failure greater than 10% and a hole expansion ratio (Ac) greater than or equal to 50% is described. Methods for the fabrication of the sheet are also described.

Abstract translation: 屈服应力大于690MPa且小于等于840MPa的热轧钢板，强度在780MPa和950MPa之间，断裂伸长率大于10％，孔膨胀比（Ac）大于或等于 至50％。 还描述了制造片材的方法。

公开(公告)号：US20160319391A1

公开(公告)日：2016-11-03

申请号：US15103357

申请日：2014-12-10

Applicant: OUTOKUMPU OYJ

Inventor： James Oliver ,  Jan-Olof Andersson ,  Erik Schedin

IPC: C21D9/48 ,  C21D7/10 ,  C22C38/58 ,  C22C38/54 ,  C22C38/52 ,  C22C38/00 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  C21D8/04 ,  C22C38/50

CPC classification number: C21D9/48 ,  C21D1/26 ,  C21D6/02 ,  C21D7/02 ,  C21D7/10 ,  C21D8/02 ,  C21D8/0405 ,  C21D8/0436 ,  C21D8/0442 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/58

Abstract: The invention relates to a method for producing a high-strength ferritic austenitic duplex stainless steel with the TRIP (Transformation induced plasticity) effect with deformation. After the heat treatment on the temperature range of 950 1150° C. in order to have high tensile strength level of at least 1000 MPa with retained formability the ferritic austenitic duplex stainless steel is deformed with a reduction degree of at least 10%, preferably at least 20% so that with a reduction degree of 20% the elongation (A50) is at least 15%.

Abstract translation: 本发明涉及一种具有TRIP（变形诱导塑性）变形效应的高强度铁素体奥氏体双相不锈钢的制造方法。 在950±1150℃的温度范围内的热处理之后，为了具有至少1000MPa的高拉伸强度水平和保持的成形性，铁素体奥氏体双相不锈钢以至少10％的还原度变形，优选在 至少20％，以减少20％的伸长率（A50）为至少15％。

公开(公告)号：US09458521B2

公开(公告)日：2016-10-04

申请号：US14321989

申请日：2014-07-02

Applicant: JFE Steel Corporation

Inventor： Tatsuya Nakagaito ,  Shusaku Takagi ,  Saiji Matsuoka ,  Shinjiro Kaneko

IPC: C23C2/28 ,  C21D8/02 ,  C21D8/04 ,  C21D9/46 ,  C21D9/48 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/06 ,  B32B15/01 ,  C23C30/00 ,  C21D1/26 ,  C22C38/00 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38

CPC classification number: C21D8/0263 ,  B32B15/013 ,  C21D1/26 ,  C21D8/04 ,  C21D8/0405 ,  C21D8/0426 ,  C21D8/0436 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C23C2/06 ,  C23C30/00 ,  Y10T428/12799

Abstract: A formable galvanized steel sheet includes, in terms of % by mass, 0.05 to 0.3% of C, 0.01 to 2.5% of Si, 0.5 to 3.5% of Mn, 0.003 to 0.100% of P, 0.02% or less of S, 0.010 to 1.5% of Al, and 0.01 to 0.2% in total of at least one element selected from Ti, Nb and V, the remainder being Fe and unavoidable impurities, having a microstructure composed of, in terms of area fraction, 20 to 87% of ferrite, 3 to 10% in total of martensite and residual austenite, and 10 to 60% of tempered martensite, and a second phase composed of the martensite, residual austenite, and tempered martensite having an average crystal grain diameter of 3 μm or less, and having a ratio of absorption energy AE to tensile strength TS (AE/TS) not less than 0.063.

Abstract translation: 可成型镀锌钢板以质量％计含有C：0.05〜0.3％，Si：0.01〜2.5％，Mn：0.5〜3.5％，P：0.003〜0.100％，S：0.02％以下 至1.5％的Al和0.01〜0.2％的选自Ti，Nb和V中的至少一种元素，余量为Fe和不可避免的杂质，其微结构以面积分数计为20〜87％ 的铁素体，总共为3〜10％的马氏体和残余奥氏体，10〜60％的回火马氏体，以及平均结晶粒径为3μm以下的马氏体，残余奥氏体和回火马氏体组成的第2相 ，并且吸收能量AE与拉伸强度TS（AE / TS）的比率不小于0.063。