公开(公告)号：US20240263265A1

公开(公告)日：2024-08-08

申请号：US18640780

申请日：2024-04-19

申请人： United States Steel Corporation

发明人： David Paul Hoydick ,  Eduardo Augusto Silva ,  Matthew Michael McCosby

IPC分类号： C21D9/46 ,  B32B15/01 ,  B32B15/04 ,  B32B15/18 ,  C21D1/20 ,  C21D1/22 ,  C21D1/25 ,  C21D1/26 ,  C21D1/78 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/40 ,  C22C38/54 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C23C28/02 ,  C25D3/22 ,  C25D5/36

CPC分类号： C21D9/46 ,  B32B15/013 ,  B32B15/043 ,  B32B15/18 ,  C21D1/20 ,  C21D1/22 ,  C21D1/25 ,  C21D1/26 ,  C21D1/78 ,  C21D8/0247 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/40 ,  C22C38/54 ,  C23C2/0224 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C23C28/021 ,  C23C28/025 ,  C25D3/22 ,  C25D5/36 ,  C21D8/0236 ,  C21D8/0278 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008

摘要： The present invention provides steel sheet products having controlled compositions that are subjected to two-step annealing processes to produce sheet products having desirable microstructures and favorable mechanical properties such as high strength and ultra-high formability. The steel sheet products may be cold rolled or hot rolled. Steels processed in accordance with the present invention exhibit favorable combined ultimate tensile strength and total elongation (UTS•TE) properties, and may fall into the category of Generation 3 advanced high strength steels, desirable in various industries including automobile manufacturers.

公开(公告)号：US20230136145A1

公开(公告)日：2023-05-04

申请号：US17910917

申请日：2021-03-16

申请人： EJOT SE & Co. KG

发明人： Ralph J. HELLMIG ,  Michael ACHENBACH ,  Fabian SIMONSEN

IPC分类号： C21D1/78 ,  C21D1/20 ,  C21D9/00

摘要： The invention relates to a method for producing a screw, having the following steps: (a) rolling a screw wire made of low-alloy carbon steel to produce screw (10) having a thread; (b) heating the entire screw (10) to an austenitizing temperature under a carbon atmosphere and/or nitrogen atmosphere and maintaining the temperature; (c) quenching the entire screw (10) to a bainitizing temperature and maintaining the bainitizing temperature until the screw has a bainitic structure over its cross-section. The invention is characterized in that the screw (10) is subsequently hardened locally at its tip (22), by the tip (22) being heated to an austenitizing temperature and the screw (10) being subsequently quenched to a temperature below the martensite starting temperature (MS).

公开(公告)号：US11255008B2

公开(公告)日：2022-02-22

申请号：US16896797

申请日：2020-06-09

申请人： Central South University

发明人： Zhiyi Liu ,  Ye Chen ,  Jian Wang ,  Jing Cao ,  Song Bai

IPC分类号： C22F1/057 ,  C21D1/18 ,  C21D1/26 ,  C21D8/02 ,  C21D9/46 ,  C22C21/16 ,  C21D1/78

摘要： The present invention discloses a method for processing a highly alloyed aluminum alloy sheet with a high rolling yield, including the steps of cold rolling and hot rolling of an alloy sheet followed by heat treatment. The highly alloyed Al—Cu—Mg—Ag alloy sheet is subjected to short-time solution treatment and quenching at high temperature for multiple times by increasing the solution treatment temperature and shortening the solution treatment time. In this way, the mechanical properties of the alloy at room temperature and high temperature match with or even exceed those of a conventional alloy subjected to long-time solution treatment at high temperature. The present invention implements multiple times of short-time continuous solution treatment and quenching of a highly-alloyed coiled aluminum alloy sheet. This prevents a large amount of scraps caused by the conventional processes of segmented solution treatment and quenching of the coiled material and stretching straightening treatment.

公开(公告)号：US11124853B2

公开(公告)日：2021-09-21

申请号：US16413163

申请日：2019-05-15

申请人： ArcelorMittal

发明人： Olga A. Girina ,  Damon Panahi

IPC分类号： C21D1/18 ,  C21D1/78 ,  C21D1/25 ,  C21D9/46 ,  C21D8/02 ,  C21D8/04 ,  C25D3/22 ,  C25D5/36 ,  C25D7/00 ,  C25D7/06 ,  B32B15/01 ,  B32B15/00 ,  B32B15/18 ,  B32B15/04 ,  C23C30/00 ,  C23C2/12 ,  C23C2/04 ,  C23C2/40 ,  C23C2/06 ,  C23C2/28 ,  C22C38/26 ,  C22C38/34 ,  C22C38/38 ,  C22C38/22 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D1/19 ,  C21D9/48 ,  C22C38/18 ,  C22C38/12

摘要： A method for producing a cold rolled steel sheet having a tensile strength ≥1470 MPa and a total elongation TE≥19%, the method comprising the steps of annealing at an annealing temperature AT≥Ac3 a non-treated steel sheet whose chemical composition contains in weight %: 0.34%≤C≤0.40%, 1.50%≤Mn≤2.30%, 1.50≤Si≤2.40%, 0

公开(公告)号：US11028457B2

公开(公告)日：2021-06-08

申请号：US15651089

申请日：2017-07-17

申请人： Caterpillar Inc.

发明人： Tianjun Liu

IPC分类号： C21D9/00 ,  C21D1/18 ,  C21D1/58 ,  C21D1/60 ,  C21D1/78 ,  C21D1/10 ,  C21D1/25 ,  C21D1/42

摘要： A method of heat treating a fastening member having a head portion, a shank portion, and a thread portion includes hardening the fastening member to a first hardness value. Hardening of the fastening member includes heating the fastening member at a first pre-set temperature value. The method also includes tempering the fastening member at a second pre-set temperature value to a second hardness value. The method further includes induction tempering the thread portion of the fastening member. Induction tempering of the thread portion includes heating the thread portion at a third pre-set temperature value to a third hardness value. The third hardness value of the thread portion is less than the second hardness value of the head portion and the shank portion.

公开(公告)号：US10718045B2

公开(公告)日：2020-07-21

申请号：US14279818

申请日：2014-05-16

申请人： AK Steel Properties, Inc.

发明人： Ralph Mutschler ,  Grant Thomas ,  Paul V. Janavicius ,  Luis G. Garza-Martinez

IPC分类号： C23C2/28 ,  C21D1/26 ,  C21D9/67 ,  C23C2/06 ,  C21D1/74 ,  C23C2/40 ,  C21D1/673 ,  C23C2/02 ,  C23C2/26 ,  C23C2/04 ,  C23C2/36 ,  C23C2/12 ,  C21D8/04 ,  B21D22/00 ,  B21D22/20 ,  C21D8/02 ,  C21D8/00 ,  C21D1/78 ,  B21D22/02

摘要： A zinc-coated steel may be produced by performing a pre-alloying heat treatment after galvannealing the steel and prior to the hot stamping the steel. The pre-alloying heat treatment is conducted at a temperature between about 850° F. and about 950° F. in an open coil annealing process. The pre-alloying heat treatment allows for shorter time at the austenitization temperature to form a desired α-Fe phase in the coating by increasing the concentration of iron. This also decreases the loss of zinc, and a more adherent oxide exists after hot stamping.

公开(公告)号：US20190264300A1

公开(公告)日：2019-08-29

申请号：US16413163

申请日：2019-05-15

申请人： ArcelorMittal

发明人： Olga A. Girina ,  Damon Panahi

IPC分类号： C21D9/46 ,  C25D5/36 ,  B32B15/01 ,  C21D8/02 ,  C21D8/04 ,  C21D1/18 ,  B32B15/00 ,  B32B15/18 ,  B32B15/04 ,  C23C30/00 ,  C23C2/12 ,  C23C2/04 ,  C21D1/78 ,  C23C2/40 ,  C22C38/26 ,  C23C2/06 ,  C25D7/00 ,  C25D3/22 ,  C25D7/06 ,  C23C2/28 ,  C22C38/34 ,  C22C38/38 ,  C22C38/22 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D1/25

摘要： A method for producing a cold rolled steel sheet having a tensile strength ≥1470 MPa and a total elongation TE≥19%, the method comprising the steps of annealing at an annealing temperature AT≥Ac3 a non-treated steel sheet whose chemical composition contains in weight %: 0.34%≤C≤0.40%, 1.50%≤Mn≤2.30%, 1.50≤Si≤2.40%, 0

公开(公告)号：US10000833B2

公开(公告)日：2018-06-19

申请号：US14770853

申请日：2014-03-11

申请人： JFE Steel Corporation

发明人： Shigeki Kitsuya ,  Naoki Matsunaga ,  Katsuyuki Ichimiya ,  Kazukuni Hase ,  Shigeru Endo

IPC分类号： C22C38/50 ,  C22C38/58 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/54 ,  C21D1/78 ,  C21D6/00 ,  C21D8/02 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C21D1/25

CPC分类号： C22C38/58 ,  C21D1/25 ,  C21D1/78 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/021 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/004 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54

摘要： A thick, high-toughness high-strength steel plate has excellent strength and toughness in the central area through the plate thickness. The thick steel plate has a specific chemical composition and includes a microstructure having, throughout an entire region in the plate thickness direction, an average prior austenite grain size of not more than 50 μm and a martensite and/or bainite phase area fraction of not less than 80%. A continuously cast slab having the specific chemical composition is heated to 1200° C. to 1350° C., hot worked with a strain rate of not more than 3/s and a cumulative working reduction of not less than 15%, and thereafter hot rolled and heat treated.

公开(公告)号：US09410220B2

公开(公告)日：2016-08-09

申请号：US13838693

申请日：2013-03-15

申请人： Buffalo Armory LLC

发明人： John Batiste ,  Todd Zyra ,  Brent Nicholson ,  Jim Sloan ,  Brad Cooper ,  John Sparling ,  Mark Turek ,  Mike Haselkorn

IPC分类号： C21D1/78 ,  C21D1/18 ,  C21D1/42 ,  B23K31/02

CPC分类号： C21D1/78 ,  B23K31/02 ,  C21D1/18 ,  C21D1/42 ,  Y02P10/253

摘要： A method for forming and treating a steel article of a high strength and high ductility alloy particularly suited for use as armor plate. The method includes the steps of providing a starting material for the steel article, heating the starting material to a peak temperature range in less than ten seconds, holding the heated steel composition at the peak temperature range for between two and six seconds, quenching the heated steel composition from the peak temperature range to below 100° C. (212° F.) at a temperature rate reduction of 400 and 3000° C./sec (752 and 5432° F./sec), removing residual quench media from the surface of the quenched steel composition, tempering the quenched steel composition at a temperature of 100 to 260° C. (212 to 500° F.); and air cooling the tempered steel composition to less than 100° C. (212° F.) to form a steel having desired mechanical properties.

摘要翻译： 一种特别适合用作装甲板的高强度高延展性合金钢制品的成形和处理方法。 该方法包括以下步骤：提供用于钢制品的起始材料，将起始材料在少于10秒内将其加热至峰值温度范围，将加热的钢组合物保持在峰值温度范围2至6秒钟，淬火加热 钢的组成从峰值温度范围到低于100℃（212°F），温度降低400和3000℃/秒（752和5432°F / sec），从 淬火钢组合物的表面，在100至260℃（212至500°F）的温度下回火淬火的钢组合物; 并将回火钢组合物空气冷却至小于100℃（212°F），以形成具有期望的机械性能的钢。

公开(公告)号：US20150034218A1

公开(公告)日：2015-02-05

申请号：US14380945

申请日：2013-04-02

申请人： VOESTALPINE STAHL GMBH ,  KOBE STEEL LTD

发明人： Daniel Krizan ,  Stefan Paul ,  Andreas Pichler ,  Michiharu Nakaya

IPC分类号： C21D8/02 ,  C21D1/78 ,  C22C38/38 ,  C22C38/32 ,  C22C38/00 ,  C22C38/22 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21D1/26 ,  C22C38/28

CPC分类号： C21D8/0247 ,  C21D1/20 ,  C21D1/26 ,  C21D1/78 ,  C21D8/0226 ,  C21D8/0236 ,  C21D9/46 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38

摘要： The present invention relates to high strength cold rolled steel sheet suitable for applications in automobiles, construction materials and the like, specifically high strength steel excellent in formability. In particular, the invention relates to cold rolled steel sheets having a tensile strength of at least 980 MPa and a method for producing such steel sheet.

摘要翻译： 本发明涉及适用于汽车，建筑材料等的高强度冷轧钢板，特别是成形性优异的高强度钢。 特别涉及拉伸强度为980MPa以上的冷轧钢板及其制造方法。