公开(公告)号：US12000007B2

公开(公告)日：2024-06-04

申请号：US16967440

申请日：2019-02-06

申请人： Integrated Heat Treating Solutions, LLC

发明人： Joseph A. Powell

IPC分类号： C21D1/60 ,  C21D1/613 ,  C21D1/667 ,  C21D1/673 ,  C21D9/10

CPC分类号： C21D9/10 ,  C21D1/60 ,  C21D1/613 ,  C21D1/667 ,  C21D1/673 ,  C21D2211/008

摘要： A process for reducing film boiling by keeping the quenchant pressure above the vapor pressure of the liquid quenchant, and/or using a controlled quenchant renewal to more uniformly cool the surface of part at the initial moment of contact and apparatuses to conduct the pressure and controlled quenchant renewal are disclosed. It is believed that these processes will improve the heat treating of parts with intricate geometries to provide predictable part distortion. The applicability of the method to gun barrels, tubes, round rings, and hollow axles is explained.

公开(公告)号：US11697857B2

公开(公告)日：2023-07-11

申请号：US17196303

申请日：2021-03-09

申请人： General Electric Company

发明人： Theodore Francis Majka

IPC分类号： C21D9/00 ,  C21D1/613 ,  C21D6/00 ,  C22C38/44 ,  C22C38/52

CPC分类号： C21D9/0068 ,  C21D1/613 ,  C21D6/004 ,  C22C38/44 ,  C22C38/52 ,  C21D2211/008

摘要： A method of making a forged, martensitic, stainless steel alloy is provided. The alloy is a forged preform of martensitic, pitting corrosion resistant stainless steel alloy comprising, by weight: 12.0 to 16.0 percent chromium; greater than 16.0 to 20.0 percent cobalt, 6.0 to 8.0 percent molybdenum, 1.0 to 3.0 percent nickel, 0.02 to 0.04 percent carbon; and the balance iron and incidental impurities. The alloy has a microstructure that comprises a retained austenite phase less than or equal to 2 percent by volume of the microstructure. The method heats the preform to a solutionizing temperature to form a solutionized microstructure. The preform is cooled with a liquid to room temperature. The preform is immersed in a cryo-liquid to transform the retained austenite phase in the microstructure to martensite. The preform is heated to a temperature of less than 600° F. for a time sufficient to form a tempered forged preform.

公开(公告)号：US20180327874A1

公开(公告)日：2018-11-15

申请号：US15774749

申请日：2015-11-11

申请人： NISSAN MOTOR CO., LTD.

发明人： Tsuyoshi SUGIMOTO ,  Yukichi OKAYAMA

IPC分类号： C21D1/20 ,  C21D1/62

CPC分类号： C21D1/20 ,  C21D1/19 ,  C21D1/22 ,  C21D1/613 ,  C21D1/62 ,  C21D1/767 ,  C21D1/773 ,  C21D9/40 ,  C21D2211/008

摘要： A gas quenching method of the present invention includes a first stage (t1 to t2) at which a workpiece is subjected to a rapid cooling by forcibly circulating a cooling gas, a second stage (t2 to t3) at which the circulation of the cooling gas is stopped and pressure is reduced inside the furnace to conduct heat insulation, and a third stage (as from t3) at which the workpiece is cooled again by the cooling gas. At the second stage, the workpiece is maintained at an intermediate temperature that is higher than martensite transformation start temperature, and, during this, temperature throughout the workpiece is made uniform. Therefore, it is possible to achieve a uniform quenching and suppress distortion caused by difference of the cooling speed.

公开(公告)号：US09951396B2

公开(公告)日：2018-04-24

申请号：US14855498

申请日：2015-09-16

申请人： Consolidated Engineering Company, Inc.

发明人： Scott P. Crafton

IPC分类号： C22F1/04 ,  C21D1/667 ,  C21D1/613 ,  C21D1/60

CPC分类号： C21D1/667 ,  B22D30/00 ,  C21D1/60 ,  C21D1/613 ,  C21D11/005 ,  C22F1/04

摘要： A quench system includes an enclosure defining a quench chamber sized to receive hot castings, and bulk air fans in fluid communication with the quench chamber and configured to establish a bulk flow of cooling air that surrounds and extracts heat from the hot castings at a first cooling rate. The quench system also includes a pressurized cooling system in fluid communication with a plurality of nozzles within the quench chamber and configured to spray a plurality of a directed flows of cooling fluid onto the hot castings to extract heat at a second cooling rate. The quench system further includes a programmable controller configured to sequentially activate the bulk air fans to cool the casting at the first cooling rate for a first predetermined period of time, and then activate the pressurized cooling system to cool the casting at the second cooling rate for a second predetermined period of time.

公开(公告)号：US20180080107A1

公开(公告)日：2018-03-22

申请号：US15267673

申请日：2016-09-16

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Maurice G. Meyer ,  Qigui Wang ,  Jianghuai Yang

IPC分类号： C22F1/04 ,  F02F1/00 ,  H05B6/10 ,  H05B6/06 ,  C21D1/42 ,  C21D1/30 ,  C21D1/613

CPC分类号： C22F1/04 ,  C21D1/30 ,  C21D1/42 ,  C21D1/613 ,  F02F1/004 ,  F02F1/18 ,  F02F7/0085 ,  F02F2200/06 ,  H05B6/06 ,  H05B6/101 ,  Y02P10/253

摘要： A method for relieving residual stress in cast-in-place liners of high pressure die cast (HPDC) engine blocks to prevent cracking in the liners during the machining process. The method includes locally heating up the liners and the surrounding engine block material through rapid induction heating and then cooling down the liners and surrounding engine block material with still ambient air to a predetermined temperature after the residual stress has been reduced to a desired threshold.

公开(公告)号：US20170350356A1

公开(公告)日：2017-12-07

申请号：US15538735

申请日：2015-12-15

申请人： Robert Bosch GmbH

发明人： Thomas Pauer ,  Haris Hamedovic ,  Karsten Schneider

IPC分类号： F02M51/06 ,  F02M61/20 ,  C21D1/613 ,  C21D9/00

CPC分类号： F02M51/061 ,  C21D1/613 ,  C21D9/0068 ,  F02D41/20 ,  F02D2041/2055 ,  F02D2041/2058 ,  F02M51/0682 ,  F02M61/20 ,  F02M2200/08 ,  F02M2200/8053 ,  F02M2200/9061

摘要： An injector, for injecting a fuel fluid into an intake manifold or into a combustion chamber of a cylinder of an internal combustion engine, includes an electromagnetic actuator that includes a magnetic circuit. The magnetic circuit includes a solenoid, an internal pole, and a magnet armature that cooperates with the solenoid and the internal pole, and is configured to generate a controlled force action between the internal pole and the magnet armature when the electromagnetic actuator is activated with the aid of an activating current and/or an activating voltage. The injector includes a gap in the area between the internal pole and the magnet armature, and includes a valve sleeve that has either paramagnetic material properties in and outside the area of the gap or paramagnetic material properties in the area of the gap and ferromagnetic material properties outside of this area.

公开(公告)号：US20170225209A1

公开(公告)日：2017-08-10

申请号：US15500283

申请日：2015-08-06

申请人： KUBOTA CORPORATION

发明人： Yutaka TSUJIMOTO ,  Tsuyoshi ODAN ,  Hiroyuki KIMURA

IPC分类号： B21B27/00 ,  C22C38/56 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/04 ,  C22C38/02 ,  C21D9/38 ,  C21D1/18 ,  C21D1/613 ,  C21D1/62 ,  B22D13/02 ,  H05B6/24 ,  B21B1/22

CPC分类号： B21B27/005 ,  B21B1/22 ,  B21B27/00 ,  B21B2001/225 ,  B22D13/00 ,  B22D13/02 ,  C21D1/18 ,  C21D1/613 ,  C21D1/62 ,  C21D9/38 ,  C22C37/06 ,  C22C37/08 ,  C22C37/10 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/56 ,  H05B6/24

摘要： The present invention provides an outer layer material for a composite roll for rolling, in which the strength of secondary eutectic carbides can be increased by reducing a B amount in the secondary eutectic carbides and surface roughening resistance can be improved, and a composite roll for rolling in which this outer layer material is used in an outer layer. The outer layer material for a composite roll for rolling of the present invention is an outer layer material for a composite roll for rolling containing C in an amount of 1.8 mass % or more and 2.5 mass % or less, Si in an amount of more than 0 mass % and 1.0 mass % or less, Mn in an amount of more than 0 mass % and 1.0 mass % or less, Ni in an amount of more than 0 mass % and 0.5 mass % or less, Cr in an amount of more than 3.0 mass % and 8.0 mass % or less, Mo in an amount of more than 2.0 mass % and 10.0 mass % or less, W in an amount of more than 0 mass % and 10.0 mass % or less, V in an amount of more than 0 mass % and 10.0 mass % or less, and B in an amount of more than 0 mass % and less than 0.01 mass %, and a remaining portion including Fe and inevitable impurities.

公开(公告)号：US09651175B2

公开(公告)日：2017-05-16

申请号：US14909152

申请日：2014-06-13

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Yuji Arai ,  Yukimasa Ueda ,  Kei Murata ,  Yasuyoshi Hidaka

IPC分类号： F16L9/02 ,  C22C38/58 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/10 ,  C21D6/00 ,  C21D1/613 ,  C21D9/08 ,  C22C38/40 ,  B21B3/00

CPC分类号： F16L9/02 ,  B21B3/00 ,  C21D1/613 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/10 ,  C21D8/105 ,  C21D9/08 ,  C21D9/085 ,  C21D2211/002 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58 ,  Y10T428/12583 ,  Y10T428/1259 ,  Y10T428/12611 ,  Y10T428/12618 ,  Y10T428/1266 ,  Y10T428/12882 ,  Y10T428/12903 ,  Y10T428/12917 ,  Y10T428/12924 ,  Y10T428/12937 ,  Y10T428/12944 ,  Y10T428/12993 ,  Y10T428/24942 ,  Y10T428/24983 ,  Y10T428/26

摘要： There is provided a seamless steel pipe for line pipe, wherein a chemical composition consists, by mass percent, of C: 0.03-0.10%, Si: ≦0.50%, Mn: 1.0-2.0%, P: ≦0.050%, S: ≦0.005%, Cr: 0.05-1.0%, Mo: 0.01-0.30%, Al: 0.001-0.10%, N: ≦0.01%, Ni: 0.04-2.0%, Ca: 0.0005-0.0050%, Cu: 0-2.0%, Ti: 0-0.05%, Nb: 0-0.05%, V: 0-0.10%, the balance: Fe and impurities, and satisfies the conditions of Cu+Ni: ≧0.10%, and Mo+V: ≦0.30%, wherein in a scale formed on the surface of the steel pipe, metal particles consisting mainly of Ni or Cu having an average circle-equivalent diameter of 0.1-5 μm exist, and a distance from a boundary between the base metal of the steel pipe and the scale to a region in which the metal particles do not exist is 20 μm or longer.

公开(公告)号：US09587286B2

公开(公告)日：2017-03-07

申请号：US13808284

申请日：2011-07-05

申请人： Jerome Peultier ,  Amelie Fanica ,  Nicolas Renaudot ,  Christophe Bourgin ,  Eric Chauveau ,  Marc Mantel

发明人： Jerome Peultier ,  Amelie Fanica ,  Nicolas Renaudot ,  Christophe Bourgin ,  Eric Chauveau ,  Marc Mantel

IPC分类号： C21D8/00 ,  C21D8/02 ,  C21D6/00 ,  C21D9/46 ,  C22C38/42 ,  C22C38/44 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  B21B1/00 ,  C21D8/06 ,  C22C38/58 ,  C22C38/60

CPC分类号： C21D9/525 ,  B21B1/00 ,  B21B3/02 ,  B21C1/003 ,  B21J1/02 ,  B22D11/002 ,  C21D1/60 ,  C21D1/613 ,  C21D6/004 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/065 ,  C21D9/46 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/58 ,  C22C38/60

摘要： The present invention provides an austenite-ferrite stainless steel. The steel composition contains in % by weight: 0.01%≦C≦0.10% 20.0%≦Cr≦24.0% 1.0%≦Ni≦3.0% 0.12%≦N≦0.20% 0.5%≦Mn≦2.0% 1.6%≦Cu≦3.0% 0.05%≦Mo≦1.0% W≦0.15% 0.05%≦Mo+W/2≦1.0% 0.2%≦Si≦1.5% Al≦0.05% V≦0.5% Nb≦0.5% Ti≦0.5% B≦0.003% Co≦0.5% REM≦0.1% Ca≦0.03% Mg≦0.1% Se≦0.005% O≦0.01% S≦0.030% P≦0.040% the rest being iron and impurities resulting from the production and the microstructure being composed of austenite and 35 to 65% ferrite by volume, the composition furthermore obeying the following relations: 40≦IF≦65 with IF=10% Cr+5.1% Mo+1.4% Mn+24.3% Si+35% Nb+71.5% Ti−595.4% C−245.1% N−9.3% Ni−3.3% Cu−99.8 and IRCGCU≧32.0 with IRCGCU=% Cr+3.3% Mo+2% Cu+16% N+2.6% Ni−0.7% Mn and 0≦IU≦6.0 with IU=3% Ni+% Cu+% Mn−100% C−25% N−2(% Cr+% Si)−6% Mo+45 as well as a method of manufacture of plates, bands, coils, bars, wires, profiles, forged pieces and molded pieces of this steel.

摘要翻译： 本发明涉及一种奥氏体 - 铁素体不锈钢组合物，其组成包含重量％：0.01％@ C @ 0.10％20.0％@ Cr @ 24.0％1.0％@ Ni @ 3.0％0.12％@ N 0.20％0.5％ Mn@2.0% 1.6％@ Cu @ 3.0％0.05％5 Mo 5 1.0％W@0.15% 0.05%@Mo +W/2@1.0% 0.2％@ Si @ 1.5％Al@0.05% V@0.5% Nb @ 0.5％Ti@0.5% B@0.003% Co@0.5% REM@0.1% Ca@0.03% Mg@0.1% Se@0.005% O@0.01% S@0.030% P@0.040%其余为铁和杂质 生产和微观结构由奥氏体和35至65体积％的铁素体组成，其组成进一步遵循以下关系：IF = 10％时，IF = 10％Cr + 5.1％Mo + 1.4％Mn + 24.3％Si + 35％Nb + 71.5％Ti-595.4％C-245.1％N-9.3％Ni-3.3％Cu-99.8和IRCGCU> = 32.0，IRCGCU =％Cr + 3.3％Mo + 2％Cu + 16％N + 2.6％ Ni-0.7％Mn和0 @ IU @ 6.0，IU = 3％Ni +％Cu +％Mn-100％C-25％N-2（％Cr +％Si）-6％Mo + 45以及制造方法 板，带，线圈，棒，电线，型材，锻造件和这种钢的模制件。

公开(公告)号：US09333635B2

公开(公告)日：2016-05-10

申请号：US14566867

申请日：2014-12-11

申请人： BLACK & DECKER INC.

发明人： Thomas J. Quinn ,  David N. Johnson ,  Florian Probst

IPC分类号： B25D17/02 ,  E21C35/18 ,  C21D1/613 ,  C21D9/50 ,  C22C38/18 ,  B23K31/02 ,  B23K37/00 ,  B28D1/26 ,  C21D6/00 ,  C21D9/22 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24 ,  C22C38/44

CPC分类号： B25D17/02 ,  B23K31/025 ,  B23K37/00 ,  B25D2222/42 ,  B28D1/26 ,  C21D1/613 ,  C21D6/002 ,  C21D6/004 ,  C21D9/22 ,  C21D9/50 ,  C21D9/505 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/22 ,  C22C38/24 ,  C22C38/44 ,  E21C35/18 ,  Y10T408/89

摘要： A chisel includes an elongate shank portion composed of a first steel, and a working end portion composed of a second steel that is different than the first steel. The working end portion is joined to the shank and configured to chisel a workpiece. The joined shank portion and working end portion has been heat treated to cause the first steel of the shank portion to adopt a first microstructure comprising bainite, the second steel of the working end portion to adopt a second microstructure comprising martensite, and the working end portion to have a greater hardness than the shank portion.

摘要翻译： 凿子包括由第一钢构成的细长柄部和由与第一钢不同的第二钢构成的工作端部。 工作端部接合到柄部并构造成凿工件。 接合的柄部和工作端部经过热处理，使得柄部的第一钢采用包含贝氏体的第一微结构，工作端部的第二钢采用包含马氏体的第二微结构，工作端部 具有比柄部更大的硬度。