公开(公告)号：US10767250B2

公开(公告)日：2020-09-08

申请号：US15560613

申请日：2016-03-25

申请人： JFE STEEL CORPORATION

发明人： Junji Shimamura ,  Nobuyuki Ishikawa ,  Shigeru Endo ,  Shusaku Ota

IPC分类号： C21D8/02 ,  C22C38/14 ,  C22C38/58 ,  C22C38/00 ,  B23K31/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/54 ,  C22C38/56 ,  B23K101/06 ,  B23K103/04

摘要： Disclosed is, as a high-strength steel plate of API X80 grade or higher with a thickness of 38 mm or more, a thick steel plate for structural pipes or tubes that exhibits high strength in the rolling direction, excellent Charpy properties at its mid-thickness part, and high material homogeneity without addition of large amounts of alloying elements. The thick steel plate for structural pipes or tubes disclosed herein has: a specific chemical composition; a microstructure mainly composed of bainite; a tensile strength of 620 MPa or more; a Charpy absorption energy vE−20° C. at −20° C. at the mid-thickness part of 100 J or more; a variation of Vickers hardness in a plate thickness direction ΔHV10,t of 50 or less; and a variation of Vickers hardness in a plate widthwise direction ΔHV10,c of 50 or less.

公开(公告)号：US20190160603A1

公开(公告)日：2019-05-30

申请号：US16163924

申请日：2018-10-18

申请人： Scoperta, Inc.

发明人： Cameron Eibl

IPC分类号： B23K35/30 ,  C22C38/56 ,  C22C38/14 ,  B23K35/02 ,  B22F1/00 ,  C22C37/10 ,  C22C38/00 ,  C22C38/46 ,  C22C38/04 ,  C22C38/44 ,  C22C38/02 ,  C21D9/50 ,  C22C33/04 ,  C22C38/54 ,  C22C37/08 ,  C22C38/08 ,  C22C38/12

摘要： Disclosed herein are embodiments of hardfacing/hardbanding materials, alloys, or powder compositions that can have low chromium content or be chromium free. In some embodiments, the alloys can contain transition metal borides and borocarbides with a particular metallic component weight percentage. The disclosed alloys can have high hardness and ASTM G65 performance, making them advantageous for hardfacing/hardbanding applications.

公开(公告)号：US10233522B2

公开(公告)日：2019-03-19

申请号：US15400847

申请日：2017-01-06

申请人： ROLLS-ROYCE plc

发明人： David A Stewart

IPC分类号： C22C38/00 ,  C22C38/04 ,  C22C38/34 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/56

摘要： A stainless steel alloy comprising essentially of 19 to 22 percent by weight chromium, 8.5 to 10.5 percent by weight nickel, 5.25 to 5.75 percent by weight silicon, 0.25 to 2.0 percent by weight carbon, 4.0 to 10.5 percent by weight molybdenum, 0.3 to 0.5 percent by weight titanium, 0.1 to 0.5 by weight percent nitrogen and the balance iron plus impurities. The impurities may consist of 0 to 0.2 percent by weight cobalt, 0 to 0.5 percent by weight manganese, 0 to 0.3 percent by weight molybdenum, 0 to 0.03 percent by weight phosphor, 0 to 0.03 percent by weight sulphur, 0 to 0.1 percent by weight nitrogen.

公开(公告)号：US20180223411A1

公开(公告)日：2018-08-09

申请号：US15947893

申请日：2018-04-09

申请人： Caterpillar Inc.

发明人： Zachary S. Birky ,  Michael A. Pershing ,  Thomas E. Clements

IPC分类号： C23C8/26 ,  C23C8/38 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/24 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/56 ,  C22C38/22 ,  C22C38/42

CPC分类号： C23C8/26 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/56 ,  C23C8/38

摘要： A disclosure is directed to a method for rapidly nitriding steel, the method including: placing the steel in a furnace having an atmosphere comprising partially dissociated ammonia gas; heating the steel to a highest temperature in a range of 400 to 600° C. while holding a nitriding potential below 15 atm−1/2 during heat-up from 400° C. up to the highest temperature; and holding the steel at the highest temperature while continuing to maintain the nitriding potential below 15 atm−1/2, where a total time taken for the heating and holding the steel in the range of 400 to 600° C. during the nitriding is 15 hours or less, and where a composition of the steel comprises at least one of the group consisting of Al, Cr, Mo, V, and Ti.

公开(公告)号：US20180066345A1

公开(公告)日：2018-03-08

申请号：US15679868

申请日：2017-08-17

申请人： Scoperta, Inc.

发明人： Justin Lee Cheney ,  John Hamilton Madok ,  Kyle Walter Rafa

IPC分类号： C22C38/58 ,  B23K35/00 ,  B23K35/30 ,  C22C38/18 ,  C22C38/26 ,  C22C38/28 ,  C09D1/00 ,  C22C38/12 ,  C22C38/22 ,  C23C30/00 ,  C22C38/48 ,  C22C38/44 ,  C22C38/38 ,  C22C38/36 ,  C22C38/32 ,  C22C38/24 ,  C22C38/14 ,  C22C38/08 ,  C22C38/02 ,  C22C38/00 ,  C22C37/10 ,  C22C37/08 ,  C22C38/56 ,  C22C38/54 ,  C22C38/50 ,  C22C38/46

CPC分类号： C22C38/58 ,  B23K35/004 ,  B23K35/308 ,  C09D1/00 ,  C09D5/00 ,  C22C29/06 ,  C22C29/14 ,  C22C32/0052 ,  C22C32/0073 ,  C22C37/08 ,  C22C37/10 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/36 ,  C22C38/38 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/56 ,  C23C30/00

摘要： Disclosed are non-magnetic metal alloy compositions and applications that relate to non-magnetic metal alloys with excellent wear properties for use in dynamic three-body tribological wear environments where an absence of magnetic interference is required. In one aspect, the disclosure can relate to a drilling component for use in directional drilling applications capable of withstanding service abrasion. In a second aspect, a hardbanding for protecting a drilling component for use in directional drilling can be provided. In a third aspect, a method for prolonging service life of a drilling component for use in directional drilling can be provided.

公开(公告)号：US09718106B2

公开(公告)日：2017-08-01

申请号：US14912511

申请日：2014-09-17

申请人： HITACHI METALS, LTD.

发明人： Toshiyuki Hattori ,  Nozomu Oda ,  Yasunori Nozaki

IPC分类号： B21B27/02 ,  B22D13/02 ,  C22C37/00 ,  C22C37/04 ,  C22C37/08 ,  B21B27/03 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/56 ,  C22C38/58

CPC分类号： B21B27/02 ,  B21B27/032 ,  B22D13/02 ,  C22C37/00 ,  C22C37/04 ,  C22C37/08 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/56 ,  C22C38/58 ,  C22C2204/00

摘要： A centrifugally cast, hot-rolling composite roll comprising an outer layer formed by a centrifugal casting method, and an inner layer made of ductile cast iron and integrally fused to the outer layer; the outer layer having a chemical composition comprising by mass 1-3% of C, 0.4-3% of Si, 0.3-3% of Mn, 1-5% of Ni, 2-7% of Cr, 3-8% of Mo, 3-7% of V, and 0.01-0.12% of B, the balance being Fe and inevitable impurities, and meeting the relation expressed by Cr/(Mo+0.5W)

公开(公告)号：US09709099B2

公开(公告)日：2017-07-18

申请号：US14876157

申请日：2015-10-06

申请人： JTEKT CORPORATION

发明人： Wataru Yoshida ,  Towako Matsui ,  Katsuhiko Kizawa ,  Takashi Sada

IPC分类号： F16C33/62 ,  F16C33/64 ,  C21D9/40 ,  C22C38/56 ,  C21D6/00 ,  C22C38/18

CPC分类号： F16C33/62 ,  C21D6/002 ,  C21D9/40 ,  C21D2211/008 ,  C22C38/18 ,  C22C38/56 ,  F16C33/64 ,  F16C2202/04 ,  F16C2204/70

摘要： A bearing ring formed of quenched and tempered high carbon chromium bearing steel, including an inner layer portion formed of tempered martensite or sorbite and having a Vickers hardness of more than 490 HV and 710 HV or less, and a surface layer portion formed to enclose an entire periphery of the inner layer portion, formed of tempered martensite, and having a higher hardness than the inner layer portion.

公开(公告)号：US20170159824A1

公开(公告)日：2017-06-08

申请号：US14963050

申请日：2015-12-08

申请人： Caterpillar Inc.

发明人： Christopher Allen Barnes ,  Thomas Edward Pickert

IPC分类号： F16J15/34 ,  C22C38/56 ,  C22C38/54 ,  C22C38/00 ,  C22C38/44 ,  C22C38/04 ,  C22C38/02 ,  B62D55/088 ,  C22C38/46

CPC分类号： F16J15/3496 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  C22C38/54 ,  C22C38/56

摘要： A seal ring comprising a boron containing cast iron composition is disclosed. The cast iron composition particularly comprises each of boron, chromium and silicon in the following amounts: boron up to 1 wt. %; chromium up to 4 wt. %; and silicon up to 2 wt. %. The seal ring may be produced by melting a cast iron composition further comprising the foregoing alloying elements; pouring the melted alloy into a mold; cooling the melted alloy to form a cast iron seal ring; and separating the cast iron seal ring from the mold. The seal ring is typically used in the undercarriage of earth-working machines, such as in the drive train or power train of such machines.

公开(公告)号：US20160138146A1

公开(公告)日：2016-05-19

申请号：US15003503

申请日：2016-01-21

申请人： Salzgitter Flachstahl GmbH

发明人： MICHAEL BRAUN ,  MANUEL OTTO ,  ZACHARIAS GEORGEOU ,  BIANCA SPRINGUB

IPC分类号： C22C38/58 ,  C22C38/54 ,  C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  B60K15/03 ,  C22C38/44 ,  C22C38/42 ,  C22C38/34 ,  C22C38/06 ,  C22C38/00 ,  C22C38/56 ,  C22C38/46

CPC分类号： C22C38/58 ,  B60K15/03006 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/34 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/56

摘要： An energy-storing container is made of a lightweight steel having the following chemical composition (in wt %): C 0.04-2%; Mn 14-30%; Al 1.5-12%; Si 0.3-3%; Cr 0.12-6%, and additionally one or more of the following elements: Ti, V, Nb, B, Zr, Mo, Ni, Cu, W, Co, P, N, each at up to 5% and in total at up to 10%, wherein the remainder is Fe including common steel tramp elements, wherein the concrete alloy composition is selected in order to limit the α′-martensite fraction before or after a forming process to no more than 3%, with the stipulation that the α′-martensite equivalent according to 0.1*wt % Mn wt % C 0.05*wt % Si is between 3.4 and 10.5.

摘要翻译： 储能容器由具有以下化学组成（重量％）的轻质钢制成：C 0.04-2％; 锰14-30％; 铝1.5-12％; 硅0.3-3％; Cr 0.12-6％，另外还有一种或多种以下元素：Ti，V，Nb，B，Zr，Mo，Ni，Cu，W，Co，P，N，各自高达5％ 最多10％，其余为Fe，包括普通钢质流动元件，其中选择混凝土合金组成以将成形过程之前或之后的α'-马氏体分数限制在不超过3％，其规定为 根据0.1重量％Mn wt％C 0.05 * wt％Si的α'马氏体当量在3.4和10.5之间。

公开(公告)号：US20160130692A1

公开(公告)日：2016-05-12

申请号：US14934569

申请日：2015-11-06

申请人： Caterpillar Inc.

发明人： Zachary S. Birky ,  Michael A. Pershing ,  Thomas E. Clements

IPC分类号： C23C8/26 ,  C22C38/56 ,  C22C38/50 ,  C22C38/46 ,  C22C38/02 ,  C22C38/42 ,  C22C38/24 ,  C22C38/06 ,  C22C38/04 ,  C22C38/22 ,  C22C38/44

CPC分类号： C23C8/26 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/56 ,  C23C8/38

摘要： A disclosure is directed to a method for rapidly nitriding steel, the method including: placing the steel in a furnace having an atmosphere comprising partially dissociated ammonia gas; heating the steel to a highest temperature in a range of 400 to 600° C. while holding a nitriding potential below 15 atm−1/2 during heat-up from 400° C. up to the highest temperature; and holding the steel at the highest temperature while continuing to maintain the nitriding potential below 15 atm−1/2, where a total time taken for the heating and holding the steel in the range of 400 to 600° C. during the nitriding is 15 hours or less, and where a composition of the steel comprises at least one of the group consisting of Al, Cr, Mo, V, and Ti.

摘要翻译： 本发明涉及一种用于快速氮化氮化的方法，该方法包括：将钢放置在具有包含部分解离的氨气的气氛的炉中; 在400〜600℃的范围内将钢加热至最高温度，同时在400℃升温至最高温度的同时保持氮化电位低于15atm-1/2; 并将钢保持在最高温度，同时继续保持渗氮电位低于15atm-1/2，其中在氮化期间加热和保持钢在400至600℃范围内的总时间为15 小时以下，钢的成分含有Al，Cr，Mo，V，Ti中的至少一种。