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公开(公告)号：US20240351094A1
公开(公告)日：2024-10-24
申请号：US18762168
申请日：2024-07-02
申请人： NETUREN CO., LTD.
发明人： Ryosuke SUZUKI , Norimasa SUNAGA
CPC分类号： B21K1/768 , B21J5/12 , B21J9/02 , C21D1/42 , C21D1/667 , C21D9/0068 , C21D2221/10
摘要： An apparatus for manufacturing a rack bar includes a pre-forming machine forming a flattened portion on an outer peripheral surface of a hollow shaft member, a teeth forming machine forming rack teeth on the flattened portion, a heat treatment machine quenching the rack teeth, a first conveying machine carrying the shaft member into and from the pre-forming machine, a second conveying machine carrying the shaft member into and from the teeth forming machine, and a third conveying machine carrying the shaft member into and from the heat treatment machine. The first conveying machine, the second conveying machine, and the third conveying machine hold one end of the shaft member from a radially inner side of the shaft member. The apparatus of the rack bar are suitable for manufacturing a relatively short hollow rack bar having rack teeth formed over substantially an entire length of a shaft member.
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公开(公告)号：US20230250500A1
公开(公告)日：2023-08-10
申请号：US18004699
申请日：2021-07-07
发明人： Volker HEUER , Christof ZIEGLER , Robin VIEL
CPC分类号： C21D1/667 , C21D1/60 , C21D1/613 , C21D11/005 , C21D1/18 , C21D9/0093 , C21D1/773 , C21D9/32
摘要： The invention relates to a device for water spray quenching that includes (i) a quenching chamber designed and set up to receive metallic workpieces, with a batch of volume V0 of 0.045 to 3.5 m3 and (ii) at least one atomizer which is configured to atomize water in air or nitrogen and is fluidically connected to the quenching chamber; in which the at least one atomizer and the device are designed and set up to generate a spray mist with a water content of 2.5 to 40 vol. % and a Sauter mean diameter of 20 to 2000 m and also a spray mist flow through the batch volume V0 of 0.05 to 25 m3/s.
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公开(公告)号：US20180363086A1
公开(公告)日：2018-12-20
申请号：US16038501
申请日：2018-07-18
CPC分类号： C21D9/40 , C21D1/10 , C21D1/42 , C21D1/667 , Y02P10/253
摘要： Methods for induction surface hardening of a ring surface of a work piece. The ring surface and a hardening device have an induction coil moved relative to one another in a treatment direction in a feed mode. A sprinkler located downstream of the induction coil in the direction of treatment serves to heat the ring surface, starting from an initial zone to a final zone, with the induction coil and then hardens it by cooling the ring surface with the sprinkler. An unhardened soft zone is provided between the initial zone and the end zone. The supplementary induction coil, the induction coil and the sprinkler are activated and deactivated separately at the start of hardening and at the end of hardening, respectively, the speed between the hardening device and the work piece and/or the power supplied to the supplementary induction coil and the induction coil varied at the same time.
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公开(公告)号：US20180327875A1
公开(公告)日：2018-11-15
申请号：US15740303
申请日：2016-06-03
申请人： NTN CORPORATION
发明人： Miyu SATO , Chikara OHKI
CPC分类号： C21D1/667 , C21D1/10 , C21D1/42 , C21D9/00 , C21D2211/001 , C22C38/00 , Y02P10/253
摘要： Provided is a high strength steel machine part. A method for manufacturing a machine part comprises the steps of: preparing a workpiece of steel to be a machine part; and subjecting the workpiece to a quenching process by heating a surface portion of the workpiece, with shear strain applied to the surface portion, to a heating temperature of an A3 transformation point temperature or higher, and subsequently cooling the surface portion. The workpiece has a carbon content of 0.2 mass % or more. In the step of subjecting the workpiece to a quenching process, the heating temperature is 800° C. or higher, and in the quenching process the workpiece has the surface portion cooled at a rate of 35° C./second or faster for a temperature range of 850° C. to 300° C.
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公开(公告)号：US20180312938A1
公开(公告)日：2018-11-01
申请号：US16027980
申请日：2018-07-05
申请人： FIVES STEIN
发明人： Alain Genaud
IPC分类号： C21D9/52 , C23C2/40 , C21D9/68 , C23C2/02 , C23G3/02 , C23G1/08 , C21D1/667 , C21D1/60 , C21D9/573 , C21D6/00 , C21D9/56 , C23C2/06
CPC分类号： C21D9/52 , C21D1/60 , C21D1/667 , C21D6/00 , C21D9/563 , C21D9/573 , C21D9/5737 , C21D9/68 , C23C2/02 , C23C2/06 , C23C2/40 , C23G1/08 , C23G1/088 , C23G3/023 , C23G3/027 , C23G3/028
摘要： Disclosed is a method for continuous thermal treatment of a steel strip. The strip passes through consecutive thermal treatment chambers, is quickly cooled in at least one of the chambers by spraying liquid onto the strip, or by spraying a fluid made up of gas and liquid or spraying a combination of gas and liquid forming a mist. After quick cooling, a protective metal layer is deposited on the strip by dip coating. The cooling fluid strips iron oxides or other alloy elements contained in the steel to be treated, minimizing oxidation and reducing the oxides on the strip. Spray pressure and distance are chosen to facilitate the stripping property and the mechanical action of the sprayed fluid, reducing the layer of oxides on the strip. The temperature of the strip at the end of the cooling step is the temperature necessary for carrying out the desired treatment cycle.
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公开(公告)号：US20180245173A1
公开(公告)日：2018-08-30
申请号：US15577271
申请日：2016-05-18
IPC分类号： C21D9/46 , C21D6/00 , C21D1/673 , C21D1/613 , C21D9/00 , C23C2/28 , C22C38/28 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/32 , F27D7/02
CPC分类号： B21B45/0218 , B21B45/0233 , C21D1/613 , C21D1/62 , C21D1/667 , C21D1/673 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0247 , C21D9/0062 , C21D9/46 , C21D2211/001 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/06 , C23C2/28 , C23C2/40 , F27D7/02 , F27D2009/007
摘要： A method for producing a hardened steel component in which a sheet blank is stamped out and the stamped sheet blank is heated to a temperature ≥Ac3 and as needed, is kept at this temperature for a predetermined time in order to carry out the austenite formation and then the sheet blank, which has been heated all over or only in some regions, is transferred to a forming die, is formed in the forming die, and in the forming die, is cooled at a speed that lies above the critical hardening speed and is thus hardened or else the sheet blank is completely cold formed and the formed sheet blank is heated all over or only in some regions to a temperature >Ac3 and as needed, is kept at this temperature for a predetermined time in order to carry out the austenite formation and then the sheet blank, which has been heated and formed all over or only in some regions, is transferred to a hardening die, and is hardened in the hardening die at a speed that lies above the critical hardening speed; the steel material is adjusted in a transformation-delaying way so that at a forming temperature that lies in the range from 450° C. to 700° C., a quench hardening takes place through the transformation of the austenite into martensite; after the heating and before the forming, an active cooling takes place in which the sheet blank or parts of the sheet blank is/are cooled at a cooling speed of >15 K/s; for the homogeneous, contactless cooling of hot sheet blanks or components, a cooling apparatus and an article with a hot surface are moved relative to each other; the cooling apparatus has at least two cooling blades or cooling columns that are parallel to and spaced apart from each other; oriented toward the sheet blank to be cooled or the component to be cooled, the cooling blades or cooling columns have a nozzle edge with nozzles; the nozzles direct a cooling fluid at the surface of the sheet blank or the component and after the cooling fluid contacts the hot surface, it flows away in the space between the blades or cooling columns.
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公开(公告)号：US10053748B2
公开(公告)日：2018-08-21
申请号：US14379263
申请日：2013-02-06
CPC分类号： C21D9/40 , C21D1/10 , C21D1/42 , C21D1/667 , Y02P10/253
摘要： The invention relates to a method for the induction surface hardening of a ring surface of a workpiece, the ring surface and a hardening device having an induction coil being moved relative to one another in a treatment direction in a feed mode. A sprinkler is located downstream of the induction coil when seen in the direction of treatment and serves to heat the ring surface, starting from an initial zone to a final zone, by means of the induction coil and then to harden it by cooling the ring surface by means of the sprinkler, an unhardened soft zone being provided between the initial zone and the end zone. According to the invention, the supplementary induction coil, the induction coil and the sprinkler are activated and deactivated separately from one another at the start of the hardening process and at the end of the hardening process, respectively, the speed between the hardening device and the workpiece and/or the power supplied to the supplementary induction coil and the induction coil being varied at the same time.
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8.发明申请公开(公告)号：US20180202015A1
公开(公告)日：2018-07-19
申请号：US15578414
申请日：2016-03-29
申请人： Eaton Leonard Group
发明人： Philippe Jaubert
CPC分类号： C21D9/085 , C21D1/42 , C21D1/667 , C21D9/0018 , C21D9/0075 , C21D9/08 , Y02P10/253
摘要： The invention relates to a device for treating, by heat tempering, a metal element (1) of the tube or bar type having arched portions. The device includes heat treatment means having an induction coil (23) and a sprinkler ring (26). According to the invention, this device includes means (2) for holding the metal element (1) that is composed of a clip (2) arranged so as to clamp around an end portion, referred to as the top, of the metal element and to keep the metal element freely suspended under said clip. The device also includes multi-axis robots (24, 28) suitable for moving the induction coil (23) and the sprinkler ring (26) simultaneously along the metal element (1) starting from an end portion, referred to as the bottom, of the metal element that is opposite the top portion thereof.
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公开(公告)号：US20180127849A1
公开(公告)日：2018-05-10
申请号：US15684899
申请日：2017-08-23
IPC分类号： C21D9/48 , B21D26/023 , B21D26/053 , B21D37/16 , C21D8/04 , C21D1/34 , C21D1/60 , C22F1/00 , C21D1/667
CPC分类号： C21D9/48 , B21D26/023 , B21D26/053 , B21D37/16 , C21D1/34 , C21D1/60 , C21D1/667 , C21D8/0405 , C21D8/0447 , C22F1/002
摘要： A hot forming by gas and direct quenching method and apparatus are disclosed. One method of using the system includes a heating step, a forming step, and a direct quenching step. This method increases the quenching speed and allows common steels with high critical cooling rate to be hot formed and quenched. This method reduces or eliminates the need for a furnace and/or the coating of the workpiece prior to the forming, as well as the removal of the coating after the forming. Furthermore, by using a hot gas containing carbon or nitrogen, the workpiece may be case hardened after the heating, forming and quenching steps.
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公开(公告)号：US09797058B2
公开(公告)日：2017-10-24
申请号：US14387537
申请日：2013-03-28
IPC分类号： C25D5/36 , C21D1/72 , C21D8/02 , C21D8/04 , C25D5/50 , C25D5/12 , C21D1/26 , C21D1/42 , C21D1/60 , C21D1/667 , C21D1/76 , C21D6/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C23F17/00 , B05D7/14 , B32B15/01 , C21D1/18 , C21D9/46 , C25D3/06
CPC分类号： C25D5/36 , B05D7/14 , B32B15/011 , C21D1/18 , C21D1/26 , C21D1/42 , C21D1/60 , C21D1/667 , C21D1/72 , C21D1/76 , C21D6/005 , C21D6/008 , C21D8/0226 , C21D8/0236 , C21D8/0247 , C21D8/0263 , C21D8/0278 , C21D8/0284 , C21D8/0478 , C21D8/0484 , C21D9/46 , C21D2251/02 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C23F17/00 , C25D3/06 , C25D5/12 , C25D5/505 , Y02P10/253 , Y10T428/12542 , Y10T428/12569 , Y10T428/12722
摘要： This relates to a process for manufacturing a recovery annealed coated steel substrate for packaging applications and a packaging steel product produced thereby.
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