公开(公告)号：US20240410041A1

公开(公告)日：2024-12-12

申请号：US18811972

申请日：2024-08-22

Applicant: CRS HOLDINGS, LLC

Inventor： Paul M. Novotny

IPC: C22C38/58 ,  C21D1/18 ,  C21D1/25 ,  C21D1/58 ,  C21D9/00 ,  C21D9/28 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  E21B4/02 ,  F16C3/02

Abstract: A steel alloy is disclosed that provides a unique combination of strength, toughness, and fatigue life. The steel alloy has the following composition in weight percent: C
about 0.15 to about 0.30 Mn
about 1.7 to about 2.3 Si
about 0.7 to about 1.1 Cr
about 1.85 to about 2.35 Ni
about 0.5 to about 0.9 Mo + ½W
about 0.1 to about 0.3 Cu
about 0.3 to about 0.7 V + 5/9 × Nb
about 0.2 to about 0.5 The balance of the alloy is iron, usual impurities, and residual amounts of other elements added during melting for deoxidizing and/or desulfurizing the alloy. A hardened and tempered steel article made from the alloy is also disclosed.

公开(公告)号：US11781195B2

公开(公告)日：2023-10-10

申请号：US17550951

申请日：2021-12-14

Applicant: Northwestern University

Inventor： Yip-Wah Chung ,  Qian Wang ,  Arman Mohammad Khan ,  Tobias Vela Martin

IPC: C23C18/00 ,  C21D8/02 ,  C22C38/22 ,  C22C38/24 ,  C21D1/58 ,  C21D1/60 ,  C21D1/613 ,  C23C18/12

CPC classification number: C21D8/0278 ,  C21D1/58 ,  C21D1/60 ,  C21D1/613 ,  C21D8/0205 ,  C22C38/22 ,  C22C38/24 ,  C23C18/1204 ,  C23C18/1241 ,  C21D2201/00 ,  C21D2211/001

Abstract: Methods for forming carbon-based lubricious and/or wear-protective films in situ on the surface of steel alloys are provided. The methods use chromium-containing steel alloys, molybdenum-containing steel alloys, and steel alloys that contain both copper and nickel. When such alloys are subjected to a rubbing motion in the presence of a hydrocarbon fluid, the chromium, molybdenum, copper, and nickel in the steel alloy catalyzes the formation of solid carbon-containing films that reduce the friction, wear, or both of the contacting surfaces.

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：US20220307102A1

公开(公告)日：2022-09-29

申请号：US17597184

申请日：2020-07-07

Applicant: DANIELI & C. OFFICINE MECCANICHE S.P.A. ,  DANIELI CENTRO COMBUSTION S.P.A.

Inventor： Enrico MOZZI ,  Fabrizio PERE

IPC: C21D9/00 ,  C21D1/58 ,  C21D1/667 ,  C21D11/00

Abstract: High productivity plant for the continuous quenching of steel bars which comprises a loading station suitable to dispose a plurality of bars separated and distanced from each other. Such plant also comprises a first treatment line, a quenching machine, a transfer station disposed downstream of the quenching machine, and a second treatment line.

公开(公告)号：US11198915B2

公开(公告)日：2021-12-14

申请号：US15892122

申请日：2018-02-08

Applicant: Ford Motor Company

Inventor： Raj Sohmshetty ,  Constantin Chiriac ,  Mikhail Minevich ,  Jason Balzer ,  S. George Luckey, Jr.

IPC: C21D6/00 ,  C22C38/00 ,  C21D1/18 ,  C21D1/58 ,  C21D1/60 ,  C21D1/667 ,  C21D1/673 ,  C22C38/02 ,  C22C38/04

Abstract: A method of quenching a press hardenable steel is provided. The method includes an initial step of die quenching a part stamped within a stamping die followed by a partial quenching after the initial step of die quenching. In various methods, the press hardenable steel is a 36MnB5 grade steel and/or the initial step of die quenching is performed at a temperature of approximately 200° C.±10° C. in a die configured for 36MnB5 grade steel. At least one method further includes opening the die followed by the partial quenching, the partial quenching comprising spraying a cooling liquid onto the part to reduce a temperature of the part below approximately 130° C.±10° C., with the option of spraying to reduce the temperature of the part below approximately 100° C.±10° C.

公开(公告)号：US20190169706A1

公开(公告)日：2019-06-06

申请号：US16321287

申请日：2017-08-25

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Ziangjiang LIU ,  Zongze HUANG

IPC: C21D9/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/26 ,  C22C38/22 ,  C21D6/00 ,  C21D1/58 ,  C21D1/18

Abstract: A sucker rod steel, a heat treatment process therefor, and a manufacturing method comprising the heat treatment process are provided. The sucker rod steel comprises, in mass percent, the following chemical elements: C: 0.10˜0.20%, Si: 0.40˜0.80%, Mn: 0.20˜0.60%, Mo: 0.36˜0.46%, Cr: 6.15˜7.10%, Al: 0.015˜0.035%, Nb: 0.02˜0.06%, and N: 0.008˜0.015%, with the balance being Fe and other inevitable impurities. The microstructure of the sucker rod steel is tempered martensite and nanoscale precipitates. The grain size is higher than grade 10, the tensile strength is 920˜1320 Mpa, and the AKU2 impact energy is greater than or equal to 180 J.

公开(公告)号：US20190153556A1

公开(公告)日：2019-05-23

申请号：US15772655

申请日：2016-10-25

Applicant: APPLIED NANO SURFACES SWEDEN AB ,  BODYCOTE VÄRMEBEHANDLING AB

Inventor： Mikael BERG ,  Mikael FÄLLSTRÖM ,  Boris ZHMUD

IPC: C21D1/58 ,  C21D1/06

Abstract: A method for manufacturing of steel articles comprises nitriding (210) a steel article at a nitrification temperature in the interval 350-650° C., giving a nitrided steel article. The nitrided steel article is quenched (220) in a reactive quenching oil from the nitrification temperature. The reactive quenching oil comprises at least one of S, P, B, Mo and W. Thereby, the quenching additionally comprises coating (222) of the nitrided steel article by a solid lubricant comprising at least one of S, P, B, Mo and W. An apparatus for manufacturing of steel articles, a quenching oil and a steel article produced by the method are also disclosed.

公开(公告)号：US20190048447A1

公开(公告)日：2019-02-14

申请号：US16161808

申请日：2018-10-16

Applicant: CRS HOLDINGS, INC.

Inventor： Paul M. Novotny

IPC: C22C38/58 ,  C22C38/52 ,  C21D1/18 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/34 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00 ,  C22C38/50 ,  C21D1/58

Abstract: An alloy is disclosed that provides a unique combination of very high strength, toughness, and ductility. The alloy can be characterized by the following weight percent composition. C0.3-0.6 Mn3.0-4.5 Si1.0-2.0 Cr0.6-2.5 Ni0.6-5.0 Mo + ½WUp to 0.5 Cu0.3-1.0 Co 0.01 max. V + 5/9Nb0.1-0.5 Ti0.025 max. Al0.025 max. Ca0.005 max. N 0.02 max. The balance is iron and the usual impurities, wherein the impurities include not more than about 0.03% phosphorus and not more than about 0.003% sulfur. The alloy is further defined by containing Si, Cu, V, and optionally Nb such that 2≤(% Si+% Cu)/(% V+( 5/9)×% Nb)≤34.

公开(公告)号：US20190027914A1

公开(公告)日：2019-01-24

申请号：US16009081

申请日：2018-06-14

Applicant: PA&E, Hermetic Solutions Group, LLC

Inventor： Hua Xia ,  Nelson Settles ,  Robert Sawyer

IPC: H02G15/013 ,  H01B17/30 ,  H02G3/22 ,  C21D1/613 ,  C21D1/60 ,  C21D1/58 ,  H01R43/24 ,  C21D1/18 ,  C22F1/10 ,  C22F1/08 ,  C23C26/00

Abstract: Methods for use in the manufacture or assembly of an electrical feedthrough to provide a solution to the technical and operational challenges that may arise from use of a high-CTE metal/low-CTE sealing material based assembly or package. In some embodiments, the inventive method includes a thermal tempering and thermal quenching process that is used to create an interfacial layer of the sealing material in which there exists a CTE gradient from sealing material to the metal shell and pin(s). This enables the production of an electrical feedthrough assembly that can tolerate high-CTE mismatch induced mechanical stress over a wide operating temperature range.

公开(公告)号：US10155303B2

公开(公告)日：2018-12-18

申请号：US14954149

申请日：2015-11-30

Applicant: Arrowhead Rockdrill Company Limited

Inventor： Eric Taylor

IPC: B25D9/00 ,  B25D9/12 ,  C21D1/18 ,  C21D1/58 ,  C21D9/00 ,  E02F3/96 ,  E02F9/26 ,  B25D17/00 ,  B25D17/06

Abstract: A method of manufacturing a hydraulic hammer using a male gauge and a female gauge is provided wherein the hammer comprises a body and a chuck housing that are connectable by cooperatively formed thread fittings. A cooperatively threaded male gauge and female gauge can be used to form the threads on the body and the chuck housing and to determine the rotational orientation of the body and the chuck housing relative to one another. One of the gauges can be used to measure distortion of the chuck housing caused by heat treatment subsequent to the formation of the thread fitting and thereby to determine the required subsequent machining of the chuck housing necessary to retain the appropriate relative rotational orientation when the chuck housing is connected to the body. The method can comprise the steps of making and appropriately marking the male gauge and the female gauge.