公开(公告)号：US10385413B2

公开(公告)日：2019-08-20

申请号：US15922939

申请日：2018-03-16

Applicant: Consolidated Engineering Company, Inc.

Inventor： Scott P. Crafton

IPC: C21D1/04 ,  C21D1/667 ,  C22F1/04 ,  C21D1/613 ,  C21D1/60 ,  B22D30/00 ,  C21D11/00

Abstract: 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：US10358691B2

公开(公告)日：2019-07-23

申请号：US15103078

申请日：2014-12-23

Applicant: POSCO

Inventor： Jai-Hyun Kwak ,  Kyoo-Young Lee ,  Hang-Sik Cho ,  Joo-Hyun Ryu ,  Man-Young Park

IPC: C21D9/52 ,  C21D9/573 ,  C21D9/60 ,  C21D1/52 ,  C21D1/42 ,  C21D1/34 ,  C21D1/60 ,  C21D1/613 ,  C21D1/773 ,  C22C38/14 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D9/56 ,  C21D1/26 ,  C21D1/40

Abstract: The present invention relates to an apparatus for continuous annealing of a strip, capable of manufacturing a high-strength and highly ductile cold-rolled steel sheet having both excellent strength and ductility, and to a method for continuous annealing of a strip. The continuous annealing apparatus, according to the present invention, is capable of continuous annealing by cooling after heating, and then reheating, unlike an existing continuous annealing apparatus which heats only once and then cools or provides an overaging treatment. As a result, the continuous annealing apparatus, according to the present invention, can preliminarily render a homogeneous texture or control the texture as desired, and then perform another reheating heat treatment to stabilize the texture or control the shape thereof to a desired state. Also, provided is a continuous annealing apparatus and a continuous annealing method using the apparatus, the continuous annealing apparatus also capable of manufacturing high-strength steel having excellent processability and strength by using a low alloy, and capable of manufacturing a zinc-plated strip having excellent plated surfaces by controlling the thickness of elements and oxides enriched on the surface of the strip.

公开(公告)号：US20190093188A1

公开(公告)日：2019-03-28

申请号：US16143779

申请日：2018-09-27

Applicant: Stan Chandler

Inventor： Stan Chandler

IPC: C21D1/613 ,  F25D3/10 ,  F25D29/00

Abstract: A cryogenic chamber system can include a vacuum chamber operable at a vacuum pressure of 100 mTorr or less, and a cold head assembly including an expander for receiving and expanding cryogenic fluid for cooling a cold head interface. The cold head assembly can be positioned within the vacuum chamber. The cryogenic chamber system can further include a thermally conductive platform thermally coupled to the cold head interface within the vacuum chamber, wherein the thermally conductive platform has a working surface having a surface area that is at least 10 times larger than a surface area of the cold head interface. The working surface can be configured to reach a temperature from about 4 K to about 120 K at the vacuum pressure as a result of thermal coupling with the cold head interface.

公开(公告)号：US10228022B2

公开(公告)日：2019-03-12

申请号：US15370239

申请日：2016-12-06

Applicant: WUHAN UNIVERSITY OF TECHNOLOGY

Inventor： Dongsheng Qian ,  Lin Hua ,  Huajie Mao ,  Qinglong Liu ,  Jiadong Deng

IPC: C21D1/30 ,  C21D6/04 ,  C21D9/40 ,  C21D8/00 ,  C21D1/613 ,  C21D1/50 ,  C21D1/18 ,  C21D1/04 ,  F16C33/64 ,  B21B37/46 ,  C21D1/58 ,  C21D7/02 ,  B21B5/00 ,  B21B9/00

Abstract: A manufacturing method of precision machine tool bearing with high precision stability includes the procedures: (1) microstructural stabilization of bearing body: by cold ring rolling, two liquid quenching, ultrasonic assisted multiple cryo-tempering treatment and stress ageing treatment, the bearing body with high microstructure stability can be obtained; (2) precision machining; (3) internal stress relaxation of bearing body: after precision machining, by executing magnetic treatment on the bearing body, bearing ring with high microstructure stability and low internal stresses can be obtained; and (4) bearing assembly: finally precision machine tool bearing with high precision stability can be obtained. Considering that the critical factors affecting the precision stability of bearing is the degree of microstructure stability and internal stresses, by improving the microstructure stability and reducing residual stress in multistage manufacture phase, precision stability of precision machine tool bearing should be promoted.

公开(公告)号：US09951396B2

公开(公告)日：2018-04-24

申请号：US14855498

申请日：2015-09-16

Applicant: Consolidated Engineering Company, Inc.

Inventor： Scott P. Crafton

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

CPC classification number: C21D1/667 ,  B22D30/00 ,  C21D1/60 ,  C21D1/613 ,  C21D11/005 ,  C22F1/04

Abstract: 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

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Maurice G. Meyer ,  Qigui Wang ,  Jianghuai Yang

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

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

Abstract: 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

Applicant: Robert Bosch GmbH

Inventor： Thomas Pauer ,  Haris Hamedovic ,  Karsten Schneider

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

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

Abstract: 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

Applicant: KUBOTA CORPORATION

Inventor： Yutaka TSUJIMOTO ,  Tsuyoshi ODAN ,  Hiroyuki KIMURA

IPC: 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 classification number: 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

Abstract: 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

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Yuji Arai ,  Yukimasa Ueda ,  Kei Murata ,  Yasuyoshi Hidaka

IPC: 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 classification number: 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

Abstract: 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：US09333635B2

公开(公告)日：2016-05-10

申请号：US14566867

申请日：2014-12-11

Applicant: BLACK & DECKER INC.

Inventor： Thomas J. Quinn ,  David N. Johnson ,  Florian Probst

IPC: 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 classification number: 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

Abstract: 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.

Abstract translation: 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。