公开(公告)号：US20180229294A1

公开(公告)日：2018-08-16

申请号：US15750770

申请日：2016-09-05

申请人： DAIDO STEEL CO., LTD.

发明人： Masamichi KAWANO

IPC分类号： B22C9/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D6/00

CPC分类号： B22C9/061 ,  C21D1/18 ,  C21D1/22 ,  C21D6/00 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D2211/001 ,  C21D2211/004 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/60

摘要： The mold steel according to the present invention contains 0.35

公开(公告)号：US20150314366A1

公开(公告)日：2015-11-05

申请号：US14689583

申请日：2015-04-17

申请人： DAIDO STEEL CO., LTD.

发明人： Masamichi KAWANO

IPC分类号： B22C9/06 ,  C22C38/38 ,  C22C38/32 ,  C22C38/28 ,  C22C38/26 ,  C22C38/22 ,  C22C38/20 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/30 ,  B22D17/22 ,  B29C45/26 ,  B30B15/02 ,  C22C38/44

CPC分类号： B22C9/061 ,  B22D17/2209 ,  B22F3/1055 ,  B22F5/007 ,  B22F2999/00 ,  B29C45/26 ,  B30B15/02 ,  B33Y70/00 ,  B33Y80/00 ,  C21D1/673 ,  C22C33/0264 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/38 ,  C22C38/44 ,  Y02P10/292 ,  Y02P10/295

摘要： The present invention relates to a steel for a mold, having a composition containing, on a % by mass basis, 0.25%

摘要翻译： 本发明涉及一种模具用钢，其组成为：以质量％计含有0.25％

公开(公告)号：US20220380874A1

公开(公告)日：2022-12-01

申请号：US17751230

申请日：2022-05-23

申请人： Daido Steel Co., Ltd.

发明人： Masamichi KAWANO

IPC分类号： C22C38/24 ,  C22C38/20 ,  C22C38/22 ,  C22C38/00 ,  C22C38/04 ,  C22C38/02 ,  C22C38/06 ,  C21D7/13 ,  C21D6/00

摘要： The present invention relates to a steel material including, in mass %: 0.310≤C≤0.410; 0.001≤Si≤0.35; 0.45≤V≤0.70; Cr≤6.00; 6.25≤Mn+Cr; Mn/Cr≤0.155; Cu+Ni≤0.84; 0.002≤P≤0.030; 0.0003≤S≤0.0060; P+5S≤0.040; 2.03

公开(公告)号：US20190352751A1

公开(公告)日：2019-11-21

申请号：US16409467

申请日：2019-05-10

申请人： DAIDO STEEL CO., LTD.

发明人： Masamichi KAWANO

IPC分类号： C22C38/38 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/00 ,  C22C38/32 ,  C22C38/30 ,  C22C38/26 ,  C22C38/24 ,  C22C38/22 ,  C22C38/20 ,  C22C38/42 ,  C22C38/58 ,  C22C38/46 ,  C22C38/44 ,  C22C38/28

摘要： The present invention relates to a die-casting die, having a composition consisting of, in mass %: 0.16≤C≤0.26, 0.001≤Si≤0.80, 1.20≤Mn≤2.00, 2.41≤Cr≤2.73, 0.48≤Mo≤0.97, 0.003≤V≤0.28, 0.0005≤Al≤0.15, 0.0002≤N≤0.050, with the balance being Fe and unavoidable impurities, and having a hardness of 26 to 43 HRC and a thermal conductivity λ [W/m/K] measured by using a laser flash method at 25° C. being 27.0≤λ.

公开(公告)号：US20240102140A1

公开(公告)日：2024-03-28

申请号：US18370225

申请日：2023-09-19

申请人： DAIDO STEEL CO., LTD.

发明人： Masamichi KAWANO

IPC分类号： C22C38/44 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/46

CPC分类号： C22C38/44 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/46

摘要： The present invention relates to a steel material including: 0.25 mass %≤C≤0.37 mass %; 0.08 mass %≤V≤0.28 mass %; 6.60 mass %≤Mn+Cr≤7.40 mass %; Mn/Cr≤0.150; Mn≥0.60 mass %; Cr≤6.60 mass %; Cu+Ni≤0.84 mass %; 0.40 mass %≤Si≤0.90 mass %; 0.60 mass %≤Mo≤2.00 mass %; 0.001 mass %≤Al≤0.080 mass %; and 0.003 mass %≤N≤0.040 mass %, with the balance being Fe and unavoidable impurities.

公开(公告)号：US20220162732A1

公开(公告)日：2022-05-26

申请号：US17529849

申请日：2021-11-18

申请人： DAIDO STEEL CO., LTD.

发明人： Masamichi KAWANO

IPC分类号： C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

摘要： The present invention relates to a steel for a mold, including 0.070≤C≤0.130 mass %, 0.01≤Si≤0.60 mass %, 0.02≤Mn≤0.60 mass %, 0.003≤P≤0.150 mass %, 0.005≤Cu≤1.50 mass %, 0.005≤Ni≤0.80 mass %, 7.50≤Cr≤8.40 mass %, 0.70≤Mo≤1.20 mass %, 0.01≤V≤0.30 mass %, 0.010≤Al≤0.120 mass %, and 0.015≤N≤0.095 mass %, with the balance being Fe and unavoidable impurities. The steel for a mold according to the present invention satisfies all of 6 properties of SA property, tempering hardness, residual stress, machinability, impact value and corrosion resistance.

公开(公告)号：US20180305799A1

公开(公告)日：2018-10-25

申请号：US15950028

申请日：2018-04-10

申请人： DAIDO STEEL CO., LTD.

发明人： Masamichi KAWANO

IPC分类号： C22C38/60 ,  C22C38/58 ,  C22C38/54 ,  C22C38/52 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  C22C38/04 ,  C21D1/18

CPC分类号： C22C38/60 ,  C21D1/18 ,  C21D1/25 ,  C21D6/004 ,  C21D6/02 ,  C21D9/0068 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/004 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/52 ,  C22C38/54 ,  C22C38/58

摘要： Provided is a prehardened steel material containing: 0.05≤C≤0.25 mass %, 0.01≤Si≤1.00 mass %, 0.40≤Mn≤1.80 mass %, 0.0002≤S≤0.3000 mass %, 0.30≤Cu≤1.80 mass %, 2.00≤Ni≤3.90 mass %, 0.05≤Cr≤3.20 mass %, 0.05≤Mo≤0.80 mass %, and 0.30≤Al≤1.50 mass %, with a balance being Fe and unavoidable impurities, in which the prehardened steel material has: a cross-sectional size of 350 mm or more in width and 350 mm or more in height, a hardness of 34 to 43 HRC, an average value of prior austenite grain size being 85 μm or less, and an average value of impact value being 18 J/cm2 or higher.

公开(公告)号：US20180282832A1

公开(公告)日：2018-10-04

申请号：US15936088

申请日：2018-03-26

申请人： DAIDO STEEL CO., LTD.

发明人： Masamichi KAWANO

IPC分类号： C21D9/00 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/32 ,  C22C38/30 ,  C22C38/28 ,  C22C38/26 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D6/00 ,  C21D1/26

摘要： The present invention provides an annealed steel material having a composition containing, in mass %, 0.28≤C≤0.42, 0.01≤Si≤1.50, 0.20≤Mn≤1.20, 4.80≤Cr≤6.00, 0.80≤Mo≤3.20, 0.40≤V≤1.20, and 0.002≤N≤0.080, with the balance being Fe and unavoidable impurities; in which the annealed steel material has a cross-sectional size of a thickness of 200 mm or more and a width of 250 mm or more, and a hardness of 100 HRB or less; and in which a diameter of a largest ferritic grain observed in a microstructure is 120 μm or less in terms of a perfect circle equivalent, an area ratio of carbides is 3.0% or more and less than 10.5%, and an average particle diameter of the carbides is 0.18 μm or more and 0.29 μm or less.

公开(公告)号：US20240229202A9

公开(公告)日：2024-07-11

申请号：US18380837

申请日：2023-10-17

申请人： DAIDO STEEL CO., LTD.

发明人： Masamichi KAWANO

IPC分类号： C22C38/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44

CPC分类号： C22C38/46 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44

摘要： The present invention relates to a steel material containing: 0.19 mass %≤C≤0.31 mass %; 0.010 mass %≤V≤0.180 mass %; Mn≤1.50 mass %; 5.60 mass %≤Cr≤6.60 mass %; Cu+Ni≤0.84 mass %; 0.60 mass %≤Si≤1.40 mass %; 0.60 mass %≤Mo≤2.00 mass %; 0.001 mass %≤Al≤0.080 mass %; and 0.003 mass %≤N≤0.040 mass %, with a balance being Fe and unavoidable impurities, in which the contents of Mn and Cr satisfy Mn/Cr>0.150.

公开(公告)号：US20240133005A1

公开(公告)日：2024-04-25

申请号：US18380837

申请日：2023-10-16

申请人： DAIDO STEEL CO., LTD.

发明人： Masamichi KAWANO

IPC分类号： C22C38/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44

CPC分类号： C22C38/46 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44

摘要： The present invention relates to a steel material containing: 0.19 mass %≤C≤0.31 mass %; 0.010 mass %≤V≤0.180 mass %; Mn≤1.50 mass %; 5.60 mass %≤Cr≤6.60 mass %; Cu+Ni≤0.84 mass %; 0.60 mass %≤Si≤1.40 mass %; 0.60 mass %≤Mo≤2.00 mass %; 0.001 mass %≤Al≤0.080 mass %; and 0.003 mass %≤N≤0.040 mass %, with a balance being Fe and unavoidable impurities, in which the contents of Mn and Cr satisfy Mn/Cr>0.150.