公开(公告)号：US20230094959A1

公开(公告)日：2023-03-30

申请号：US17800787

申请日：2021-02-07

Applicant: Baoshan Iron & Steel Co., Ltd.

Inventor： Sixin Zhao ,  Zongze Huang ,  Jiaqiang Gao ,  Jun Zhang

IPC: C22C38/58 ,  C21D1/25 ,  C21D1/58 ,  C21D1/60 ,  C21D9/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

Abstract: Disclosed are a steel with controlled steel ratio and a manufacturing method therefor. The steel comprises the following components in percentage by mass: C: 0.245-0.365%, Si: 0.10-0.80%, Mn: 0.20-2.00%, P:≤0.015%, S:≤0.003%, Cr: 0.20-2.50%, Mo: 0.10-0.90%, Nb: 0-0.08%, Ni: 2.30-4.20%, Cu: 0-0.30%, V: 0.01-0.13%, B: 0-0.0020%, Al: 0.01-0.06%, Ti: 0-0.05%, Ca:≤0.004%, H:≤0.0002%, N:≤0.013%, O:≤0.0020%, and the balance of Fe and inevitable impurities, wherein the components satisfy (8.57*C+1.12*Ni)≥4.8% and 1.2%≤(1.08*Mn+2.13*Cr)≤5.6%. The steel has excellent low-temperature impact toughness and aging impact toughness at −20° C. and −40° C., a rationally controlled yield ratio, and ultra-high strength, ultra-high toughness, and ultra-high plasticity, which can be used in applications such as offshore platform mooring chains, mechanical structures, and automobiles that require high strength and toughness of the steel.

公开(公告)号：US20230078751A1

公开(公告)日：2023-03-16

申请号：US17794483

申请日：2021-01-22

Applicant: LASER ENGINEERING APPLICATIONS

Inventor： Axel Stefan M KUPISIEWICZ ,  Jose Antonio RAMOS DE CAMPOS ,  David BRUNEEL ,  Anne HENROTTIN ,  Liliana CANGUEIRO ,  Marc DECULTOT ,  Paul-Etienne MARTIN

IPC: C21D1/09 ,  B23K26/082 ,  C21D1/38 ,  C21D1/62 ,  C21D1/773 ,  C21D9/00 ,  F27D7/06

Abstract: A method for volume heat treating a part having an external surface delimiting its volume, the method comprising the following steps: a. providing a laser source;
b. providing the part;
c. providing support means for supporting the part;
d. placing said part so that it is held in position by said support means; and
e. irradiating with the laser source at least one segment of the external surface of the part with a laser exposure power and duration to obtain a temperature rise in essentially the entire volume of the part.

公开(公告)号：US11566300B2

公开(公告)日：2023-01-31

申请号：US17452248

申请日：2021-10-26

Applicant: TFP Corporation

Inventor： Peter A. Workman ,  Timothy A. White ,  Samuel T. Ray

IPC: C21D9/00 ,  C21D1/18 ,  C21D6/00 ,  E04C5/01 ,  C21D1/42 ,  C22C38/54 ,  C22C38/46 ,  C22C38/44 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

Abstract: A stud-weldable rebar and a method for making the rebar are disclosed. The rebar has a steel body with a weld end and a diameter that is substantially uniform along a length of the body. A tip portion at the weld end includes a hardened zone and a base portion is formed of the remaining steel body. The hardened zone has a hardness that is about 1.5-3.0 times greater than a hardness of the base portion. Induction hardening is used to form the hardened zone.

公开(公告)号：US11566299B2

公开(公告)日：2023-01-31

申请号：US17163914

申请日：2021-02-01

Applicant: L.E. Jones Company

Inventor： Cong Yue Qiao ,  David M Doll

IPC: F01L3/02 ,  C21D9/00 ,  C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D6/00 ,  C22C38/54

Abstract: An iron-based alloy includes, in weight percent, carbon from about 0.75 to about 2 percent; manganese from about 0.1 to about 1 percent; silicon from about 0.1 to about 1 percent; chromium from about 3 to about 6 percent; nickel up to about 4 percent; vanadium from about 1 to about 3 percent; molybdenum from about 4 to about 7 percent; tungsten from about 4 to about 7 percent; cobalt from about 4 to about 7 percent; boron up to about 0.1 percent; nitrogen from about 0.001 to about 0.15 percent, aluminum from about 0.001 to about 0.6 percent, copper from about 0.1 to about 1 percent, sulfur up to about 0.3 percent, phosphorus up to about 0.3 percent, up to about 5 percent total of tantalum, titanium, hafnium and zirconium; iron from about 65 to about 80 percent; and incidental impurities.

公开(公告)号：US11566298B2

公开(公告)日：2023-01-31

申请号：US16406129

申请日：2019-05-08

Applicant: United Technologies Corporation

Inventor： Derek T. Welch ,  Nikhil Mehta

IPC: C21D7/06 ,  C21D9/00 ,  B24C1/10

Abstract: Methods and masks for manufacturing component of gas turbine engines are described. The methods include applying a mask to a protected surface of the component, the component having a designated surface to be treated by a shot peen operation. The mask includes a full masking portion configured to prevent a shot peen media from impacting the protected surface. A masking control region is arranged around the designated surface. The masking control region is configured to control an amount of force imparted to the component by shot peen media during the shot peen operation, wherein the masking control region extends from the full masking portion to the designated surface. The designated surface is shot peened with shot peen media to form a compressive stress region within the component proximate the designated surface and a tapering transition of compressive forces within the component proximate the masking control region.

公开(公告)号：US20230017796A1

公开(公告)日：2023-01-19

申请号：US17784452

申请日：2020-12-16

Applicant: POSCO

Inventor： Jai-Ik Kim

IPC: C22C38/04 ,  C22C38/54 ,  C22C38/50 ,  C22C38/42 ,  C22C38/06 ,  C22C38/00 ,  C21D8/02 ,  C21D9/00

Abstract: The present invention provides a high-strength tin blackplate and a manufacturing method therefor.
The tin blackplate according to an exemplary embodiment of the present invention includes: by wt %, 0.03 to 0.09% of carbon (C); 0.2 to 0.4% of manganese (Mn); 0.01 to 0.06% of aluminum (Al); 0.15 to 0.45% of chromium (Cr); 0.05 to 0.25% of copper (Cu); 0.03 to 0.08% of titanium (Ti); and the balance of iron (Fe) and inevitable impurities, and has a yield strength of 570 to 700 MPa.

公开(公告)号：US11555224B2

公开(公告)日：2023-01-17

申请号：US16740587

申请日：2020-01-13

Applicant: weba Werkzeugbau Betriebs GmbH

Inventor： Johannes Graf ,  Klaus Weber

IPC: C21D1/06 ,  C21D9/48 ,  B21D53/88 ,  C21D1/673 ,  C21D8/04 ,  B21D24/16 ,  B21D22/02 ,  C21D8/02 ,  C21D1/18 ,  B21D35/00 ,  C21D8/00 ,  C21D9/00

Abstract: A process of producing a partially hardened metallic formed part comprises: heating a semi-finished product of hardenable hot-formable steel sheet to a hardening temperature; hot-forming the heated semi-finished product in a combined hot-forming cutting device into a three-dimensional formed part; cutting the formed part in the combined hot-forming cutting device; pressure-hardening the formed part in the hot-forming cutting device into a hardened formed part such that a first partial region is hardened by rapid cooling and that a second partial region of the formed part is heat-treated so as to comprise a greater ductility and a lower strength than the first partial region, wherein the operation of cutting the formed part takes place at least in one of the first and second partial region. A combined hot-forming cutting device can be used to produce a metallic formed part.

公开(公告)号：US11542569B2

公开(公告)日：2023-01-03

申请号：US16473042

申请日：2017-12-21

Applicant: POSCO

Inventor： Hyung-Gu Kang ,  Sang Jin Lee ,  Jae-Hong Shim ,  Yong-Heon Lee ,  Jong-Jin Jeon

IPC: C21D9/46 ,  C22C38/58 ,  C22C38/44 ,  C22C38/42 ,  C22C38/02 ,  C22C38/00 ,  C21D9/00 ,  C21D8/02 ,  C21D6/00 ,  C21D1/18

Abstract: An austenitic stainless steel having excellent processability and surface characteristics and a method of manufacturing the austenitic stainless steel are disclosed. The austenitic stainless steel includes, by weight %, 0.005% to 0.15% of carbon (C), 0.1% to 1.0% of silicon (Si), 0.1% to 2.0% of manganese (Mn), 6.0% to 10.5% of nickel (Ni), 16% to 20% of chromium (Cr), 0.005% to 0.2% of nitrogen (N), the remainder iron (Fe) and other unavoidable impurities, wherein a degree of Ni surface negative segregation defined by the following Formula (1) is in a range of 0.6 to 0.9. (CNi-Min)/(CNi-Ave)  Formula (1), where CNi-Min is a minimum concentration of Ni on the surface of the austenitic stainless steel and CNi-Ave is an average concentration of Ni on the surface of the austenitic stainless steel.

公开(公告)号：US11535916B2

公开(公告)日：2022-12-27

申请号：US16768869

申请日：2018-12-05

Applicant: NIPPON STEEL CORPORATION

Inventor： Soshi Fujita ,  Yuki Suzuki ,  Masahiro Fuda ,  Jun Maki ,  Hideaki Irikawa ,  Takashi Aramaki ,  Tatsuya Kubota

IPC: C22C38/54 ,  C21D8/02 ,  C21D9/00 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C23C2/12 ,  C23C2/40

Abstract: An aluminum-based plated steel sheet according to an aspect of the present invention includes: a base material; an aluminum-based plating layer located above the base material; and an intermetallic compound layer that is located between the base material and the aluminum-based plating layer and contains an intermetallic compound of Al and Fe, in which the base material has a chemical component within a predetermined range, the aluminum-based plating layer contains, on average, 80 mass % or more and 97 mass % or less of Al, 3 mass % or more and 15 mass % or less of Si, 0 mass % or more and 5 mass % or less of Zn, 0 mass % or more and 5 mass % or less of Fe, 0 mass % or more and 3 mass % or less in total of one or more selected from the group consisting of Mg and Ca, and impurities so that a total amount thereof is 100 mass %, an average value of a thickness of the intermetallic compound layer is 2 μm or more and 10 μm or less, a maximum value of the thickness of the intermetallic compound layer is 10 μm or more and 25 μm or less, and a standard deviation of the thickness of the intermetallic compound layer is 2 μm or more and 10 μm or less.

公开(公告)号：US20220364472A1

公开(公告)日：2022-11-17

申请号：US17711441

申请日：2022-04-01

Applicant: Raytheon Technologies Corporation

Inventor： Dilip M. Shah ,  Alan D. Cetel ,  Venkatarama K. Seetharaman

IPC: F01D5/14 ,  B21J5/00 ,  B21J5/02 ,  B23P15/02 ,  C21D9/00 ,  C22F1/10 ,  F01D5/30

Abstract: A method for manufacturing a blade, the method includes casting a nickel alloy blade precursor having an airfoil and a root. The airfoil and the root are solution heat treating differently from each other. After the solution heat treating, the root is wrought processed. After the wrought processing, an exterior of the root is machined.