公开(公告)号：US09957594B2

公开(公告)日：2018-05-01

申请号：US14857108

申请日：2015-09-17

申请人： CRS HOLDINGS, INC.

发明人： Paul M. Novotny

IPC分类号： C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/52 ,  C22C38/00 ,  C22C38/04 ,  C22C38/34 ,  C21D1/18 ,  C22C38/02 ,  C22C38/58 ,  C21D6/00

CPC分类号： C22C38/46 ,  C21D1/18 ,  C21D6/001 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D2211/008 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/34 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/58

摘要： A high strength, high toughness steel alloy is disclosed. The alloy has the following weight percent composition. Element C0.30-0.55 Mn 0.6-1.75 Si0.9-2.8 Cr0.6-2.5 Ni2.70-7.0  Mo + ½ W0.25-1.3  Cu0.30-1.25 Co 0.01 max. V + ( 5/9) × Nb0.10-1.0  Ti 0.01 max. Al0.015 max. Ca0.005 max. The alloy further includes a grain refining element selected from the group consisting of 0.0001-0.01% Mg, 0.001-0.025% Y, and a combination thereof. The balance of the alloy is iron and the usual impurities found in commercial grades of steel alloys produced for similar use and properties. In this regard phosphorus is limited to not more than about 0.01% and sulfur is limited to not more than about 0.001%. Also disclosed is a hardened and tempered article that has very high strength and fracture toughness. The article is formed from the alloy having the weight percent composition set forth above. The alloy article according to this aspect of the invention is further characterized by being tempered at a temperature of about 500° F. to 600° F.

公开(公告)号：US20180105894A1

公开(公告)日：2018-04-19

申请号：US15562631

申请日：2016-03-16

申请人： Kabushiki Kaisha Kobe Seiko Sho {Kobe Steel, Ltd.)

发明人： Yuki SASAKI ,  Takuya KOCHI ,  Masamichi CHIBA ,  Masayuki SAKATA

IPC分类号： C21D9/52 ,  C22C38/40 ,  C22C38/32 ,  C22C38/20 ,  C22C38/12 ,  C22C38/08 ,  C22C38/18 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D1/32 ,  C21D8/06 ,  C21D6/00

CPC分类号： C21D9/525 ,  C21D1/32 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/06 ,  C21D8/065 ,  C21D2211/003 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/18 ,  C22C38/20 ,  C22C38/32 ,  C22C38/40 ,  C22C38/60

摘要： An object of the present invention is to provide a steel wire for mechanical structural parts that is reduced in deformation resistance and improved in crack resistance during cold working, and thus exhibits excellent cold workability. The steel wire for mechanical structural parts of the present invention is a steel wire containing, in mass %, 0.3 to 0.6% of C, (105 to 0.5% of Si, 0.2 to 1.7% of Mn, more than 0% and 0.03% or less of P, 0.001 to 0.05% of S, 0.005 to 0.1% of Al, and 0 to 0.015% of N, the balance being iron and inevitable impurities, wherein steel of the steel wire has a metal structure formed of ferrite and cementite, and the number proportion of cementite particles present in ferrite grain boundaries is 40% or more based on the total number of cementite particles.

公开(公告)号：US20180105893A1

公开(公告)日：2018-04-19

申请号：US15561337

申请日：2016-02-15

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Tetsuo ISHITSUKA ,  Shuji IWAMOTO ,  Takashi TSUSUE ,  Shunichi KOBAYASHI ,  Osamu YOSHIDA ,  Hideto KAWANO

IPC分类号： C21D9/50 ,  C22C38/58 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D9/08 ,  C21D8/10 ,  C21D6/00 ,  B21B1/02 ,  B21B1/22 ,  F16L9/17 ,  B23K11/087

CPC分类号： C21D9/505 ,  B21B1/026 ,  B21B1/22 ,  B21B2001/028 ,  B21B2001/225 ,  B23K11/0873 ,  B23K11/16 ,  B23K2101/06 ,  B23K2103/04 ,  C21D6/001 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/02 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/105 ,  C21D9/08 ,  C21D9/085 ,  C21D9/46 ,  C21D9/50 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58 ,  F16L9/17

摘要： Electric resistance welded steel pipe securing the high strength and high toughness demanded from oil well pipe in recent years. The metal structure in a region having a width of 0.5 mm in both the thickness directions from a reference point, when using a point defined as a point ¼ of the thickness in the thickness direction from the surface in the base material part of the steel pipe as the reference point, consists of polygonal ferrite: 10 area % or less and a balance: bainitic ferrite. The thickness is 15 mm or more.

公开(公告)号：US20180104738A1

公开(公告)日：2018-04-19

申请号：US15653598

申请日：2017-07-19

申请人： FUSHENG PRECISION CO., LTD

发明人： Bao-Bin Li ,  Zhi-Nan Lin

IPC分类号： B21K17/00 ,  C22C38/42 ,  C22C38/04 ,  C21D6/00 ,  C21D6/04

CPC分类号： B21K17/00 ,  A63B53/02 ,  A63B53/047 ,  C21D6/004 ,  C21D6/04 ,  C21D2211/001 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/42

摘要： A method for manufacturing a golf club head includes providing a club head body produced by electric smelting an alloy base material including 0.04-0.07 wt % of carbon, 0.5-1.0 wt % of manganese, 0.5-1.0 wt % of silicon, less than 0.04 wt % of phosphorus, less than 0.03 wt % of sulfur, 15-17.7 wt % of chromium, 3.6-5.1 wt % of nickel, 2.8-3.5 wt % of copper, with the rest being iron and inevitable impurities. A solid solution treatment is proceeded at 1020-1080° C. for 80-100 minutes to form austenite and martensite in the club head body. A deep cooling treatment is proceeded between −120° C. and −80° C. for 7-9 hours to turn the austenite in the club head body into martensite. An aging treatment is proceeded on the club head body at 460-500° C. for 210-270 minutes to provide a hardness of HRC 36-46. A hosel is heated with high frequency waves at 900-1000° C. to posses a hardness lower than HRC 20.

公开(公告)号：US20180100211A1

公开(公告)日：2018-04-12

申请号：US15836895

申请日：2017-12-10

申请人： JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO., LTD.

发明人： Min CHEN ,  Feng LI ,  Qing YIN ,  Jiaolong ZHAI ,  Ke GENG ,  Jianfeng ZHANG ,  Zhen HUANG ,  Jian BAO ,  Xiaojiang RUAN

IPC分类号： C21D9/40 ,  B21B1/22 ,  C21D8/06 ,  C21D6/00 ,  C22C38/44 ,  C22C38/04 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C22C38/42 ,  C22C38/60 ,  C22C38/50

CPC分类号： C21D9/40 ,  B21B1/22 ,  B21B2001/225 ,  B22D11/001 ,  B22D11/115 ,  B22D11/1206 ,  B22D11/1213 ,  B22D11/122 ,  B22D11/18 ,  B60B27/02 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/065 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/28 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/50 ,  C22C38/60 ,  F16C19/186 ,  F16C2204/72

摘要： A steel, including: between 0.45 and 0.70 wt. % of carbon, between 0.10 and 0.50 wt. % of silicon, between 0.30 and 0.70 wt. % of manganese, between 0.20 and 0.60 wt. % of chromium, less than or equal to 0.025 wt. % of phosphorus, between 0.003 and 0.030 wt. % of sulfur, less than or equal to 0.1 wt. % of molybdenum, less than or equal to 0.2 wt. % of nickel, less than or equal to 0.04 wt. % of aluminum, less than or equal to 0.3 wt. % of copper, less than or equal to 0.001 wt. % of calcium, less than or equal to 0.003 wt. % of titanium, less than or equal to 0.001 wt. % of oxygen, less than or equal to 0.04 wt. % of arsenic, less than or equal to 0.03 wt. % of tin.

公开(公告)号：US20180073097A1

公开(公告)日：2018-03-15

申请号：US15701039

申请日：2017-09-11

申请人： POSCO

发明人： Kyung Min NOH ,  Min Sung JOO ,  Ki Seok KIM ,  Young Hune KIM

IPC分类号： C21D9/08 ,  C21D8/10 ,  C21D6/00 ,  C22C38/50 ,  C22C38/44 ,  C22C38/42 ,  C22C38/48 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

CPC分类号： C21D9/08 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/105 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50

摘要： Provided is a steel for pipes for use in applications such as oil or gas extraction. Particularly, there are provided a steel for pipes having high fatigue resistance, a method of manufacturing the steel, and a welded steel pipe obtained using the steel.

公开(公告)号：US20180030566A1

公开(公告)日：2018-02-01

申请号：US15553514

申请日：2016-02-19

申请人： NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION

发明人： Kazuhisa MATSUMOTO ,  Masaharu HATANO ,  Shinichi OHMIYA

IPC分类号： C21D9/46 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C21D6/00 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C22C38/58 ,  C22C38/44

CPC分类号： C21D9/46 ,  C21D6/00 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/00 ,  C21D8/0205 ,  C21D8/0226 ,  C21D2211/001 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58

摘要： This high-strength austenitic stainless steel having excellent hydrogen embrittlement resistance characteristics includes, by mass %, C: 0.2% or less, Si: 0.3% to 1.5%, Mn: 7.0% to 11.0%, P: 0.06% or less, S: 0.008% or less, Ni: 5.0% to 10.0%, Cr: 14.0% to 20.0%, Cu: 1.0% to 5.0%, N: 0.01% to 0.4%, and 0: 0.015% or less, with the balance being Fe and unavoidable impurities, wherein an average size of Cr-based carbonitrides is 100 nm or less, and an amount of the Cr-based carbonitrides is 0.001% to 0.5% in terms of % by mass.

公开(公告)号：US20180030561A1

公开(公告)日：2018-02-01

申请号：US15551411

申请日：2015-10-16

申请人： MITSUBISHI HEAVY INDUSTRIES, LTD. ,  MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION

发明人： Yusuke Ishibashi ,  Shugo Iwasaki ,  Shinichiro Tokuyama ,  Yuji Masuda ,  Kosei Kawahara

IPC分类号： C21D9/00 ,  F04D29/42 ,  C21D1/18

CPC分类号： C21D9/0068 ,  C21D1/00 ,  C21D1/18 ,  C21D6/002 ,  C21D6/004 ,  C21D9/00 ,  C21D2211/008 ,  F04D1/063 ,  F04D7/02 ,  F04D17/10 ,  F04D29/026 ,  F04D29/4206 ,  F04D29/426 ,  F05D2230/40

摘要： A method of manufacturing a hollow element which has an internal space and of which the internal space is cryogenically used, the method comprising a base material forming step of forming a base material which has a space to serve as the internal space; a filling step of filling the internal space of the formed base material with fluid having a temperature equal to or lower than a temperature at which the base material is subjected to solid-phase transformation and causing the base material to be subjected to the solid-phase transformation; and a finishing step of finishing the base material after the base material is subjected to phase transformation.

公开(公告)号：US09863023B2

公开(公告)日：2018-01-09

申请号：US14437015

申请日：2013-10-22

申请人： JFE STEEL CORPORATION

发明人： Tomohiro Ishii ,  Shin Ishikawa ,  Hiroyuki Ogata ,  Hiroki Ota

IPC分类号： C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C21D7/02 ,  C25F1/06 ,  C22C38/58 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C25F1/00 ,  B21B1/22 ,  C21D1/26 ,  C21D6/00 ,  C21D8/00 ,  C22C38/42 ,  C22C38/54

CPC分类号： C22C38/58 ,  B21B1/22 ,  C21D1/26 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/005 ,  C21D9/46 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C25F1/00

摘要： Provided are a ferritic stainless steel having a corrosion resistance at a certain level or more and a temper-color removal performance at a certain level or more and a method for manufacturing the ferritic stainless steel. A ferritic stainless steel has a composition containing, by mass %, C: 0.001% to 0.030%, Si: 0.03% to 0.30%, P: 0.05% or less, S: 0.01% or less, Cr: more than 22.0% to 28.0%, Mo: 0.2% to 3.0%, Al: 0.01% to 0.15%, Ti: more than 0.30% to 0.80%, V: 0.001% to 0.080%, and N: 0.001% to 0.050%; Mn: 0.05% to 0.30% and Ni: 0.01% to 5.00%, or Mn: 0.05% to 2.00% and Ni: 0.01% to 0.30%; Nb: 0.05% or less as an optional component; and the balance being Fe and inevitable impurities, and the steel has a surface where TiN having a grain diameter of 1 μm or more is distributed at a density of 30 particles/mm2 or more.

公开(公告)号：US09850552B2

公开(公告)日：2017-12-26

申请号：US13664083

申请日：2012-10-30

申请人： Stephen A. Monette, Jr.

发明人： Stephen A. Monette, Jr.

IPC分类号： C21D6/04 ,  C21D9/42 ,  C21D6/00 ,  C22C38/44 ,  C22C38/04 ,  B32B5/24 ,  B32B5/26 ,  B32B15/14 ,  F41H5/04 ,  B32B37/10 ,  B32B5/02 ,  B32B5/18 ,  B32B5/22 ,  B32B7/12 ,  B32B15/04 ,  B32B15/18 ,  B32B37/12 ,  B32B38/00 ,  B32B38/08

CPC分类号： C21D6/04 ,  B32B5/02 ,  B32B5/024 ,  B32B5/18 ,  B32B5/22 ,  B32B5/245 ,  B32B5/26 ,  B32B7/12 ,  B32B15/046 ,  B32B15/14 ,  B32B15/18 ,  B32B37/1018 ,  B32B37/12 ,  B32B38/08 ,  B32B2038/0076 ,  B32B2260/021 ,  B32B2260/023 ,  B32B2260/046 ,  B32B2262/0253 ,  B32B2262/0261 ,  B32B2262/0269 ,  B32B2262/101 ,  B32B2262/105 ,  B32B2262/106 ,  B32B2266/045 ,  B32B2305/076 ,  B32B2307/102 ,  B32B2307/536 ,  B32B2307/558 ,  B32B2307/58 ,  B32B2307/718 ,  B32B2309/105 ,  B32B2311/00 ,  B32B2571/02 ,  B32B2605/00 ,  B32B2605/08 ,  C21D6/004 ,  C21D6/005 ,  C21D9/42 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/44 ,  F41H5/045 ,  F41H5/0464 ,  Y10T29/49764 ,  Y10T29/49826 ,  Y10T156/10

摘要： A method of processing ultra high hardness steel is provided to increase its usefulness in armor applications. The method involves slowly cooling the ultra high hardness steel to a cryogenic temperature, slowly returning the steel to an ambient temperature, slowly heating the steel, and again slowly returning it to an ambient temperature.