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21. 发明专利

JPH0227411B2 失效
公开(公告)号：JPH0227411B2
公开(公告)日：1990-06-18
申请号：JP4687584
申请日：1984-03-12
申请人： NIPPON STEEL CORP
发明人： HARASE JIRO
IPC分类号： C21D9/46 , C21D8/02

22. 发明专利

JPH0215283B2 失效
公开(公告)号：JPH0215283B2
公开(公告)日：1990-04-11
申请号：JP14682882
申请日：1982-08-26
申请人： NIPPON STEEL CORP
发明人： AKITA KOICHI , SAYANAGI SHIRO , NAKAJIMA HIROE , HARASE JIRO
IPC分类号： B21B3/02 , B21B1/22 , C21D7/02 , C21D8/04 , C21D9/46

23. 发明专利

JPH02419B2 失效
公开(公告)号：JPH02419B2
公开(公告)日：1990-01-08
申请号：JP5962084
申请日：1984-03-29
申请人： NIPPON STEEL CORP
发明人： HARASE JIRO
IPC分类号： C21D9/46 , B21B3/02 , C21D8/02 , C21D8/04 , C21D9/48

24. 发明专利

JPH02410B2 失效
公开(公告)号：JPH02410B2
公开(公告)日：1990-01-08
申请号：JP11669684
申请日：1984-06-08
申请人： NIPPON STEEL CORP
发明人： HARASE JIRO , OOTA KUNITERU , TAKESHITA TETSUO , UEDA MASANORI , YOSHIMURA HIROBUMI , HASHIMOTO HIROAKI
IPC分类号： B21B1/22 , B21B3/02 , C21D8/02 , C21D9/46

25. 发明专利

JPH01201445A FERRITIC STAINLESS STEEL HAVING EXCELLENT WORKABILITY AND CORROSION RESISTANCE 失效
公开(公告)号：JPH01201445A
公开(公告)日：1989-08-14
申请号：JP30302888
申请日：1988-11-30
申请人： NIPPON STEEL CORP
发明人： HIRAMATSU HIROYUKI , NAKADA SHIOO , YOSHIMURA HIROBUMI , ONOYAMA YUKIO , UEDA MASANORI , HARASE JIRO , TAKESHITA TETSUO
IPC分类号： C22C38/00 , C22C38/38 , C22C38/58
摘要： PURPOSE:To reduce the amounts of expensive elements and to improve the workability and corrosion resistance in a ferrite stainless steel having specific compsn. by regulating P and S to low base, reducing O and using C and N in accordance with Cr amounts. CONSTITUTION:The ferritic stainless steel contains, by weight,

26. 发明专利

JPH01197046A PRODUCTION OF CR-SERIES STAINLESS STEEL SHEET BY USING THIN THICKNESS CASTING METHOD 失效
公开(公告)号：JPH01197046A
公开(公告)日：1989-08-08
申请号：JP2211588
申请日：1988-02-03
申请人： NIPPON STEEL CORP
发明人： SUZUKI TORU , HARASE JIRO , OTA KUNITERU
IPC分类号： B21B1/22 , B21B3/00 , B21B3/02 , B22D11/00 , C21D8/04 , C21D9/46 , C22C38/00 , C22C38/18 , C22C38/32
摘要： PURPOSE:To produce a sheet at low cost by specifying thickness and over- heating temp. of Cr-series stainless steel sheet limiting components. CONSTITUTION:The thin cast sheet having 8-30% Cr, 0.001-0.5% C, 0.001-0.5% N as main components and about 2-4mm thickness is cast at about 1,510-1,600 deg.C. Further, liquids temp. of this composition is 1,480-1,500 deg.C. Annealing and cold-rolling are executed to this and successively finish annealing is executed. Then, condition of the over-heating temp. is 0

27. 发明专利

JPS6231050B2 失效
公开(公告)号：JPS6231050B2
公开(公告)日：1987-07-06
申请号：JP9834178
申请日：1978-08-12
申请人： NIPPON STEEL CORP
发明人： HARASE JIRO
IPC分类号： H01F1/16 , C21D8/12 , C21D9/46

28. 发明专利

JPS62149816A PRODUCTION OF POLYCRYSTAL BODY HAVING GOOD SECONDARY RECRYSTALLIZED STRUCTURE 失效
公开(公告)号：JPS62149816A
公开(公告)日：1987-07-03
申请号：JP28935585
申请日：1985-12-24
申请人： NIPPON STEEL CORP
发明人： HARASE JIRO , SHIMIZU AKIRA
IPC分类号： C21D8/12 , C04B41/80 , H01F1/16
摘要： PURPOSE:To produce a polycrystal body having good secondary recrystallized structure by determining the corresponding orientation direction of the orientation of the optionally selected crystal grain of the polycrystal body and the above-mentioned crystal grain and predicting the secondary recrystallized texture of the above-mentioned polycrystal body. CONSTITUTION:The orientation of the crystal grains prior to the secondary recrystallization of the polycrystal body is measured with the optionally selected crystal grains. The number of the above-mentioned crystal grains to be measured in specified preferably to 100-1,000 pieces. The corresponding orientation relation of the orientation of the above-mentioned crystal grains and the crystal grains of which the above-mentioned orientation is measured is determined and the secondary recrystallized texture of the above-mentioned polycrystal body is predicted. The frequency distribution of the crystal grains having the corresponding orientation relation is adjusted to the desired orientation by changing the primary recrystallized texture in accordance with the above-mentioned prediction or the critical frequencies of the crystal grains having the corresponding orientation relation necessary for the generation of the secondary recrystallized grains is adjusted. The polycrystal having the desired good secondary recrystallized structure and high quality is thus obtd. at a high yield.

29. 发明专利

JPS6277423A MANUFACTURE OF FERRITIC STAINLESS STEEL SHEET SUPERIOR IN WORKABILITY 失效
公开(公告)号：JPS6277423A
公开(公告)日：1987-04-09
申请号：JP21477285
申请日：1985-09-30
申请人： NIPPON STEEL CORP
发明人： TAKESHITA TETSUO , HARASE JIRO , OOTA KUNITERU
IPC分类号： C21D8/00 , C21D8/02 , C21D8/04 , C21D9/46 , C21D9/48
摘要： PURPOSE:To economically manufacture the titled steel sheet, by holding roughly not rolled piece of ferritic stainless steel precipitating a suitable quantity of gammaphase at a specified temp., then finish annealing and coiling it at high temp. CONSTITUTION:Ferritic stainless steel slab contg. by weight about =10% gamma phase is hot rolled. Thereat, after rough rolling completion, the obtd. piece is held at 1,050-1,150 deg.C range for >=30sec, favorably =80 deg.C to accelerate gamma alpha transformation, gamma mother phase is recrystallized and carbonitride is precipitated. By adding 0.08-0.30% Al to the ferritic stainless steel, the coiling temp. can be lowered to 700 deg.C.

30. 发明专利

JPS61163216A MANUFACTURE OF FERRITIC STAINLESS STEEL SHEET SUPERIOR IN SURFACE PROPERTY AND WORKABILITY 失效
公开(公告)号：JPS61163216A
公开(公告)日：1986-07-23
申请号：JP388285
申请日：1985-01-12
申请人： NIPPON STEEL CORP
发明人： HARASE JIRO , TAKESHITA TETSUO , OOTA KUNITERU , ABE SEISABURO , UEDA MASANORI , TSUCHINAGA MASAMITSU , WAKAMATSU MICHIO
IPC分类号： B21B1/22 , B21B3/02 , C21D8/02 , C21D8/04 , C21D9/46
摘要： PURPOSE:To manufacture inexpensively the titled steel sheet having no surface flaw and superior deep drawability, by applying heating, rough rolling, finishing hot rolling, winding, cold rolling, final annealing in order under specified conditions to ferritic stainless steel slab contg. a specified quantity of Al. CONSTITUTION:Ferritic stainless steel slab contg. 0.08-0.5wt% Al is heated to 1,150-1,250 deg.C range. Next, said slab is rolled roughly, by performing >=2 times rollings having >=15sec- =850 deg.C, favorably at >=900 deg.C at hot rolling. Rolled steel plate is wound at 700-850 deg.C range, then descaled, and cold rolled by continuous cold rolling mill having >=300mmphi work roll diameter. Further, said sheet is annealed finally at 800-1,000 deg.C range for >=1sec-

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