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公开(公告)号：EP3778948B1
公开(公告)日：2024-10-16
申请号：EP18911370.7
申请日：2018-03-29
发明人： TODA, Yuri , HIKIDA, Kazuo , FUJINAKA, Shingo , TANAKA, Tomohito
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公开(公告)号：EP4442849A1
公开(公告)日：2024-10-09
申请号：EP22898702.0
申请日：2022-11-29
摘要： This steel member has a predetermined chemical composition, in which, when a 1/4 position of a thickness in a thickness direction from a surface is defined as a 1/4 depth position, a metallographic structure at the 1/4 depth position includes 90% or more of martensite by volume fraction, in the metallographic structure at the 1/4 depth position, L49-56°/L4-12°, which is a ratio of a length L49-56° of grain boundaries having an angle of rotation of 49° to 56° to a length L4-12° of grain boundaries having an angle of rotation of 4° to 12° about a direction as a rotation axis, among grain boundaries of grains having a body-centered structure, is 1.10 or more, and a tensile strength of the steel member is more than 1,500 MPa.
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公开(公告)号：EP4435132A1
公开(公告)日：2024-09-25
申请号：EP23163524.4
申请日：2023-03-22
IPC分类号： C22C38/12 , C22C38/04 , C22C38/02 , C21D9/46 , C21D8/02 , C21D6/02 , C21D6/00 , C21D1/18 , C21D7/02 , B32B15/01
CPC分类号： C22C38/12 , C22C38/04 , C22C38/02 , C21D9/46 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C21D8/0247 , C21D6/02 , C21D6/005 , C21D7/02 , C21D1/18 , B32B15/013
摘要： Disclosed are a steel alloy, an article of manufacture made of the steel alloy, and a method of making an article of manufacture.
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公开(公告)号：EP4424859A1
公开(公告)日：2024-09-04
申请号：EP22886523.4
申请日：2022-09-20
CPC分类号： C22C38/00 , C21D9/00 , C21D1/18 , C22C38/60 , C22C38/22 , C22C38/20 , C21D6/007 , C22C38/005 , C21D8/0205 , C21D8/0236 , C21D6/008 , C21D8/0263 , C22C38/26 , C22C38/54 , C22C38/30 , C22C38/32 , C22C38/06 , C22C38/28 , C22C38/50 , C22C38/002 , C22C38/38 , C21D8/0226 , C22C38/24 , C22C38/008 , C22C38/02 , C21D9/46 , C22C38/48 , C21D6/002 , C21D6/005 , C22C38/001 , C21D6/004 , C22C38/04 , C21D8/005 , C22C38/12 , C22C38/14 , C22C38/10 , C22C38/34 , C22C38/16 , C22C38/08 , C21D9/0068
摘要： A hot-stamp formed body has a predetermined chemical composition and has a microstructure including, by area ratio, martensite: 90% to 100% and a remainder in the microstructure: 0% to 10%. The percentage of martensite having a GAIQ value of 40000 or less in all of the martensite is less than 5.0%, an average grain size of prior austenite grains is 6.0 µm or less, and a standard deviation of grain sizes of the prior austenite grains is 2.6 µm or less.
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公开(公告)号：EP3630387B1
公开(公告)日：2024-08-28
申请号：EP18810167.9
申请日：2018-05-31
IPC分类号： C21D9/40 , F16C33/14 , F16C33/10 , F16C17/06 , B21D53/10 , C22C38/44 , C22C38/04 , C22C38/02 , C21D8/02 , C21D6/00 , C21D1/42 , C21D1/30 , C21D1/26 , C21D1/18 , F16C33/00 , B21J5/00 , B21J1/06 , B21J5/02 , B21K1/04 , B24D11/00 , F16C17/04
CPC分类号： F16C2220/4620130101 , F16C2220/7020130101 , C21D9/40 , F16C17/04 , F16C33/14 , C21D2261/0020130101 , F16C2223/1020130101 , C21D1/18 , C21D1/30 , C21D1/26 , C21D1/42 , C21D6/002 , C21D8/0205 , C22C38/04 , C22C38/02 , C22C38/44 , F16C17/06 , F16C33/108 , B21J1/06 , B21J5/022 , B21J5/025 , B21K1/04 , B24D11/001 , Y02P10/25
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9.发明公开
公开(公告)号：EP4416310A1
公开(公告)日：2024-08-21
申请号：EP22802956.7
申请日：2022-10-14
CPC分类号： C21D1/185 , C21D8/0273 , C21D8/0226 , C22C38/04 , C21D2211/00520130101 , C21D2211/00320130101 , C21D8/0478 , C21D6/005 , C23C2/02 , C23C2/26 , C23C2/28 , C23C2/06 , C23C2/40 , C23C24/04 , C23C28/021 , C23C28/025 , C23C30/00
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10.发明公开
公开(公告)号：EP4407050A1
公开(公告)日：2024-07-31
申请号：EP23203357.1
申请日：2023-10-12
申请人： Rek, Pavel
发明人： Rek, Pavel
摘要： The present invention belongs to the field of metallurgy, more precisely to the field of devices for hardening. The invention relates to a tool for induction hardening of cylinders with low frequencies, comprising a cooling system designed to prevent deformation of the inductor material due to high inner forces caused by low frequencies of powering voltage. The tool (1) comprises a high-frequency inductor (4) and a low-frequency inductor (2) with a space arranged to receive the cylinder for hardening, wherein each inductor is provided with its own console (3, 5), a transformer for powering the inductors (2, 4) connectable to the consoles (3, 5), electronic circuit for controlling and electric circuit for powering the tool, as well as the cooling system. The latter comprises a cooling channel (23) on at least one coil of each inductor (2, 4) and/or a channel (31b, 32a, 33a) on each console (3, 5), a reservoir with cooling water connected to said cooling channels, a pump for allowing flow of the cooling fluid along the channels, a temperature sensor (28) for measuring cylinder temperature, and a sensor for measuring flow of cooling liquid. The cooling system further comprises a sprinkler (6) for cooling the cylinder, said sprinkler installed below the inductors (2, 4).
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