公开(公告)号：US12214393B2

公开(公告)日：2025-02-04

申请号：US16649867

申请日：2018-09-21

Applicant: BAOSHAN IRON & STEEL CO., LTD. ,  China Baowu Steel Group Corporation Limited

Inventor： Jianfeng Nie ,  Zhuoran Zeng ,  Shiwei Xu ,  Nick Birbilis ,  Christopher H. J. Davies ,  Weineng Tang

IPC: B21C23/00 ,  C22C23/00

Abstract: The present invention provides magnesium or magnesium alloys having high formability at room temperature, the magnesium or magnesium alloys having a grain size ≤2 microns. The present invention also provides a method for manufacturing the magnesium or magnesium alloys having high formability at room temperature. The magnesium or magnesium alloys having high formability at room temperature are prepared by simple processing means. The present invention overcomes a problem of poor formability at room temperature.

公开(公告)号：US20250034687A1

公开(公告)日：2025-01-30

申请号：US18706895

申请日：2022-11-02

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Hongbin LI ,  Jianhua DING ,  Zicheng LIU ,  Kougen WU

IPC: C22C38/58 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

Abstract: Disclosed in the present invention is high-strength and high-hardness reinforced wear-resistant steel, comprising Fe and inevitable impurities, and further comprising the following chemical elements in percentage by mass: C: 0.22-0.33%; Si: 0.10-1.00%; Mn: 0.50-1.80%; Cr: 0.80-2.30%; Al: 0.010-0.10%; RE: 0.01-0.10%; W: 0.01-1.0%; and at least one of MO: 0.01-0.80%, Ni: 0.01-1.00%, Nb: 0.005-0.080%, V: 0.01-0.20%, and Ti: 0.001-0.50%. In addition, further disclosed in the preset invention is a manufacturing method for the high-strength and high-hardness reinforced wear-resistant steel, comprising the steps of: (1) smelting and casting; (2) heating; (3) rolling; and (4) on-line quenching: wherein the cooling start temperature of primary cooling is (Ar3′+5)-(Ar3′+50)° C., M90

公开(公告)号：US20250012382A1

公开(公告)日：2025-01-09

申请号：US18712635

申请日：2022-11-24

Applicant: Baoshan Iron & Steel Co., Ltd.

Inventor： Wen Sun ,  Zhan Gao ,  Yannan Ma ,  Hongzhi Zuo

IPC: F16L9/02 ,  C21D1/25 ,  C21D1/30 ,  C21D6/00 ,  C21D9/08 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14

Abstract: Disclosed is a steel pipe for oil cylinder and a manufacturing method therefor. In addition to 90 wt % or more of Fe and inevitable impurities, the steel pipe for oil cylinder further comprises the following chemical elements in wt %: C: 0.16-0.3%, Si: 0.15-0.5%, Mn: 1.2-1.8%, Nb: 0.02-0.04%, Mo: 0.1-0.2%, and optionally Ti: 0.015-0.03% and B: 0.0015-0.0035%. According to the present invention, after tension reduction and quenching of the steel pipe, different stepped cooling processes are adopted respectively, the distribution of phase change and thermal stress in the whole wall thickness of the steel pipe for oil cylinder is controlled by increasing the rigidity and straightness level of the steel pipe, the distribution of ferrite in the microstructure of the steel pipe for oil cylinder is controlled, the residual stress of the steel pipe for oil cylinder is effectively reduced, cracking of the inner wall is avoided, and therefore the steel pipe for oil cylinder with high strength and low residual stress is obtained. The steel pipe for oil cylinder has a yield strength of greater than or equal to 600 MPa, a tensile strength of greater than or equal to 730 MPa, and a residual stress of less than or equal to 50 MPa.

公开(公告)号：US20250002730A1

公开(公告)日：2025-01-02

申请号：US18710138

申请日：2022-11-21

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Dengfeng Li ,  Yunwei Hao ,  Pan Xiao ,  Bo Wang ,  Guobao Li ,  Kejin Shen ,  Zhicheng Wang ,  Quanli Jiang

IPC: C09D5/18 ,  C09D5/02 ,  C09D7/40 ,  C09D7/61 ,  C09D163/00

Abstract: The present disclosure relates to an insulating coating, which comprises the following components: a water-soluble metal inorganic salt A containing a water-soluble phosphate A1, which comprises a water-soluble phosphate of at least one of aluminum, zinc, magnesium and manganese; a water dispersible organic emulsion B, which comprises at least one of an epoxy emulsion and a curing agent thereof, polyester, polyurethane, polyacrylate and an ethylene-vinyl acetate copolymer; an additive C, which comprises at least one of a structure reinforcing additive C1 and a heat-resistance reinforcing additive C2, wherein the structure reinforcing additive C1 comprises an inorganic nanoparticulate matter, and the heat-resistance reinforcing additive C2 is selected from at least one of boric acid and a water-soluble salt of molybdenum, tungsten, vanadium or titanium; an auxiliary agent D1 and a solvent D2, wherein the solid content ratio of the water-soluble metal inorganic salt A to the water dispersible organic emulsion B is (35-85):(15-65) in part by mass. In addition, the present disclosure further relates to a silicon steel plate, and the surface of the substrate thereof is provided with a coating layer formed by the insulating coating of the present disclosure.

公开(公告)号：US12179978B2

公开(公告)日：2024-12-31

申请号：US17277479

申请日：2019-09-19

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Long Xie ,  Zhangwei Wang ,  Hua Ni ,  Xiujun Li ,  Hongxing Chen

IPC: B65D65/40 ,  B29C48/08 ,  B29C48/21 ,  B29K67/00 ,  B29K509/08 ,  B32B15/09 ,  B32B15/18 ,  B32B15/20 ,  B32B27/08 ,  B32B27/20 ,  B32B27/36 ,  B65D6/00 ,  C08J5/18 ,  C08L67/02

Abstract: A blended polyester laminating film resistant to discoloration caused by cooking, comprising polyethylene terephthalate and polybutylene terephthalate. The blended polyester laminating film comprises three layers, i.e., upper, middle, and lower layers. One surface layer contains SiO2 in a mass fraction of 1200-2000 ppm added by in-situ polymerization. The blended polyester laminating film is manufactured by a three-layer coextrusion biaxial stretching method, and the manufacturing method is 240-275° C. A film-laminated metal sheet manufactured from the blended polyester laminating film has excellent resistance to discoloration caused by cooking, and is applied to metal containers for food and beverage packaging that require high-temperature sterilization.

公开(公告)号：US20240133490A1

公开(公告)日：2024-04-25

申请号：US18547172

申请日：2022-02-25

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Wen SUN ,  Yaoheng LIU ,  Zhonghua ZHANG ,  Ping HU ,  Yannan MA

IPC: F16L9/02 ,  C21D1/84 ,  C21D6/00 ,  C21D8/10 ,  C21D9/08 ,  C22C33/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

CPC classification number: F16L9/02 ,  C21D1/84 ,  C21D6/005 ,  C21D6/008 ,  C21D8/105 ,  C21D9/085 ,  C22C33/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C21D2211/002

Abstract: The present disclosure provides a bainite geological drilling pipe, comprising the following chemical elements in percentage by mass: 0.14-0.22% of C, 0.2-0.55% of Si, 2.1-2.9% of Mn, 0.01-0.04% of Nb, 0.015-0.04% of Al, 0.001-0.005% of B, 0

公开(公告)号：US11968766B2

公开(公告)日：2024-04-23

申请号：US16972080

申请日：2019-08-02

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Xiaoli Jin ,  Dengfeng Li ,  Yueming Zhou ,  Bo Wang ,  Guobao Li

IPC: H05B6/10 ,  B29C65/36 ,  H05B6/06 ,  H05B6/14 ,  H05B6/36

CPC classification number: H05B6/103 ,  B29C65/368 ,  H05B6/06 ,  H05B6/14 ,  H05B6/36

Abstract: An induction heating system for a silicon steel core with a self-adhesive coating that includes an induction heating device having a columnar induction heating coil with a hollow cavity that carries out induction heating on a silicon steel plate at a medium frequency of 6-20 KHz. By rapid induction heating at a medium frequency, a silicon steel core with a self-adhesive coating can be rapidly cured, thereby greatly shortening the processing time, improving production efficiency, and facilitating automated operation in the production of a silicon steel core with a self-adhesive coating. The system also ensures the quality of the cured core products that can be widely applied in the field of the production of silicon steel cores with a self-adhesive coating.

公开(公告)号：US20240093342A1

公开(公告)日：2024-03-21

申请号：US18262156

申请日：2021-12-23

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Ning TAN ,  Hao LIU ,  Xinyan JIN

IPC: C23C2/12 ,  C21D8/00 ,  C21D9/00 ,  C22C38/00 ,  C22C38/06 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C23C2/28 ,  C23C2/40

CPC classification number: C23C2/12 ,  C21D8/005 ,  C21D9/0081 ,  C22C38/002 ,  C22C38/06 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C23C2/29 ,  C23C2/40

Abstract: Disclosed in the present invention is an aluminum plated steel sheet, comprising a substrate and a plating layer on the surface of the substrate. The microstructure of the plating layer comprises a Mg2Si phase and an AlMgSiFe phase; and an average grain diameter of the Mg2Si phase is 0.001-5 μm. The present invention can alleviate the problem of melting-induced roller sticking and hydrogen embrittlement risk in a thermoforming process of the aluminum plated steel sheet. The present invention further provides a manufacturing method for the aluminum plated steel sheet, and a thermoformed component and a manufacturing method therefor.

公开(公告)号：US20240071661A1

公开(公告)日：2024-02-29

申请号：US18259898

申请日：2022-01-11

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Meihong WU ,  Guobao LI ,  Shuangjie CHU ,  Zipeng ZHAO ,  Baojun LIU ,  Kanyi SHEN ,  Yongjie YANG ,  Zhuochao HU ,  Yaming JI ,  Chen LING

IPC: H01F1/18 ,  C21D1/18 ,  C21D1/84 ,  C21D6/00 ,  C21D8/12 ,  C21D9/52 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

CPC classification number: H01F1/18 ,  C21D1/18 ,  C21D1/84 ,  C21D6/005 ,  C21D6/008 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/125 ,  C21D8/1255 ,  C21D8/1261 ,  C21D8/1266 ,  C21D8/1283 ,  C21D9/52 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  B23K26/362 ,  C21D2201/05 ,  C22C2202/02

Abstract: A manufacturing method for low-magnetostrictive oriented silicon steel is provided, wherein the oriented silicon steel comprises a silicon steel substrate and an insulating coating on the surface of the silicon steel substrate. The manufacturing method comprises: performing single-sided laser etching on the silicon steel substrate, wherein the side of the silicon steel substrate, on which single-sided laser etching is performed, is a first surface, and the side opposite to the first surface is a second surface; determining a deflection difference between the first surface and the second surface based on the power of the laser etching, and determining a difference in the amount of the insulating coatings on the first surface and the second surface based on the deflection difference; and forming insulating coatings on the first surface and the second surface. The amount of the insulating coating on the second surface is greater than that on the first surface, and the amount of the insulating coating on the first surface and that on the second surface satisfy the difference in the amount of the insulating coatings. By using the manufacturing method in the present invention, the problem of a relatively large magnetostrictive deviation between two sides of oriented silicon steel caused by single-sided laser etching can be solved. Oriented silicon steel manufactured by the aforementioned manufacturing method is also provided. A transformer iron core prepared using the oriented silicon steel enables a transformer to have low noise during operation.

公开(公告)号：US11872614B2

公开(公告)日：2024-01-16

申请号：US17258230

申请日：2019-07-24

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Kangjian Wang ,  Peilei Qu

IPC: B21B37/00 ,  B21B45/02

CPC classification number: B21B37/007 ,  B21B45/0239 ,  B21B2037/002

Abstract: An emulsion flow optimization method suitable for a cold continuous rolling mill that aims to achieve vibration suppression. The method aims to suppress vibrations by an oil film thickness model and a friction coefficient model. An optimum set value of the emulsion flow rate for each rolling stand that aims to achieve vibration suppression is optimized on the basis of an over-lubrication film thickness critical value and an under-lubrication film thickness critical value that are proposed. The method greatly reduces the incidence of rolling mill vibration defects, improves production efficiency and product quality, treats rolling mill vibration defects, and improves the surface quality and rolling process stability of a finished strip of a cold continuous rolling mill.