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1. 发明专利

JPH0641685A HIGH MN NON-MAGNETIC COLD-ROLLED STEEL SHEET AND ITS PRODUCTION 失效
公开(公告)号：JPH0641685A
公开(公告)日：1994-02-15
申请号：JP20145592
申请日：1992-07-28
申请人： KAWASAKI STEEL CO
发明人： OKA YUTAKA , SATO SHINJI
IPC分类号： C21D6/00 , C21D1/46 , C22C33/00 , C22C38/00 , C22C38/04
摘要： PURPOSE:To obtain the steel sheet which is used for the devices used under a high vacuum and requiring the prevention of magnetic field disturbance and is easy of surface polishing by specifying the composition of a high Mn steel and a method for pickling this steel, respectively. CONSTITUTION:A steel having a composition consisting of, by weight, 0.01-0.60% C, 0.5-12.0% Cr, 15.0-34.0% Mn. 0.05-1.0% Si, 0.02-0.5% V, 0.005-0.2% N, and the balance Fe is used, by which magnetic permeability can be maintained at a low value. This steel is subjected, by the ordinary methods, to casting, hot rolling, and annealing and then cold-rolled. The resulting cold-rolled steel sheet is heat-treated at 900-1200 deg.C, immersed in a salt mixture of caustic soda and sodium nitrate of 380-460 deg.C for >=40sec or longer, and then immersed in a 10-25% solution of sulfuric acid of 60-85 deg.C. By this procedure, the oxide scale formed at the time of annealing can be removed without increasing surface roughness. By this method, the desired high Mn non-magnetic cold-rolled steel sheet having 0.015 or a lower magnetic permeability and 0.10mu or smaller surface roughness Ra can be obtained.

2. 发明专利

JPH0421754B2 失效
公开(公告)号：JPH0421754B2
公开(公告)日：1992-04-13
申请号：JP26683484
申请日：1984-12-18
申请人： KAWASAKI STEEL CO
发明人： HINO MASAYUKI , ISHIKAWA MASAAKI , SATO SHINJI
IPC分类号： C21D9/52 , C23G1/08 , C23G1/32 , C25F1/06

3. 发明专利

JPH03271379A STAINLESS STEEL SHEET TO BE COATED AND COATED STEEL SHEET 失效
公开(公告)号：JPH03271379A
公开(公告)日：1991-12-03
申请号：JP7113990
申请日：1990-03-20
申请人： KAWASAKI STEEL CO , TOA PAINT CO LTD
发明人： HASUNO SADAO , ISHIKAWA MASAAKI , SATO SHINJI , KATO YASUSHI , SAKAMOTO YASUHEI , UCHINO MASAKATSU
IPC分类号： B32B15/08 , B05D7/00 , C23C22/30
摘要： PURPOSE:To produce a stainless steel sheet to be coated improved in adhesive strength to coated film by forming a chromate film in which the total chromium content per unit area, the amount of trivalent chromium in the total chromium content, and the content of trivalent chromium per unit area are specified, respectively, on the surface of a stainless steel sheet. CONSTITUTION:A chromate film in which the total chromium content is regulated to 0.5mg/m -50mg/m and trivalent chromium comprises 60% of the total chromium content and, further, trivalent chromium content is regulated to is formed on the surface of a stainless steel sheet. At this time, it is desirable that the steel sheet surface is previously subjected to sufficient degreasing and washing and drying after the application of chromating solution is carried out at about 250 deg.C and, further, the chromated steel sheet is coated with a transparent colored resin. By this method, the stainless steel sheet to be coated in which coloration is prevented and which has superior brightness characteristics and adhesive strength of coated film can be obtained.

4. 发明专利

JPS6369951A NONMAGNETIC AUSTENITIC STAINLESS STEEL HAVING HIGH HARDNESS 失效
公开(公告)号：JPS6369951A
公开(公告)日：1988-03-30
申请号：JP21243386
申请日：1986-09-09
申请人： KAWASAKI STEEL CO
发明人： SHIMIZU HIROSHI , HASUNO SADAO , SATO SHINJI
IPC分类号： H01F1/00 , C22C38/00 , C22C38/58
摘要： PURPOSE:To attain reduction in the amounts of expensive components and to improve the nonmagnetism and hardness, by adding no Mo unlike SUS 316 steel and adding specified amounts of Mn, Cr, Cu, N and Al, Ti or the like. CONSTITUTION:The compsn. of an austenitic stainless steel is composed of, by weight,

5. 发明专利

JPS6369950A NONMAGNETIC AUSTENITIC STAINLESS STEEL HAVING HIGH HARDNESS 失效
公开(公告)号：JPS6369950A
公开(公告)日：1988-03-30
申请号：JP21243286
申请日：1986-09-09
申请人： KAWASAKI STEEL CO
发明人： SHIMIZU HIROSHI , HASUNO SADAO , SATO SHINJI
IPC分类号： H01F1/00 , C22C38/00 , C22C38/58
摘要： PURPOSE:To attain reduction in the amounts of expensive components and to improve the nonmagnetism and hardness, by adding no Mo unlike SUS 316 steel and specifying the amounts of Mn, Cr, Cu and N in a balanced state. CONSTITUTION:The compsn. of an austenitic stainless steel is composed of, by weight,

6. 发明专利

JPS62149819A PRODUCTION OF 'INVAR(R)' ALLOY STRIP 失效
公开(公告)号：JPS62149819A
公开(公告)日：1987-07-03
申请号：JP29155485
申请日：1985-12-24
申请人： KAWASAKI STEEL CO
发明人： SATO SHINJI , TAKEDA MOTOHIKO , HINO MASAYUKI , ISHIKAWA MASAAKI
IPC分类号： C21D9/46 , B21B3/00 , C21D8/02 , C22C38/00 , C22C38/08
摘要： PURPOSE:To produce an 'Invar(R)' alloy strip having required Vickers hardness and ductility by subjecting a hot rolled 'Invar(R)' alloy sheet consisting of specifically composed Ni and Fe to finish rolling by cold rolling at an adequate draft then to annealing under specific conditions. CONSTITUTION:The hot rolled 'Invar(R)' alloy sheet contg. 34.0-38.0wt% Ni and essentially consisting of the balance Fe is subjected to the finish annealing at 30-75% draft then to the annealing at the temp. T which is below 700 deg.C and satisfies the formula; T>=10/3XR+400 (where, T; annealing temp., deg.C, R; cold rolling draft, %) in the stage of cold rolling the above-mentioned alloy sheet. The 'Invar(R)' alloy strip which has the hardness of about 180-220 Hv necessary for assuring sheet passability and the toughness to maintain the fine pores of good dimensional accuracy and is used for the shadow mask of a color cathode ray tube is thus obtd.

7. 发明专利

JPS6230823A METHOD FOR ANNEALING COLD ROLLED LOW CR STAINLESS STEEL STRIP HAVING SUPERIOR SCALING RESISTANCE 失效
公开(公告)号：JPS6230823A
公开(公告)日：1987-02-09
申请号：JP16945485
申请日：1985-07-31
申请人： KAWASAKI STEEL CO
发明人： HINO MASAYUKI , SATO SHINJI , ISHIKAWA MASAAKI
IPC分类号： C21D9/52
摘要： PURPOSE:To obtain a cold rolled low Cr stainless steel strip having superior scaling resistance by subjecting a cold rolled stainless steel strip contg. specified amounts of C and Cr to bright annealing in the atmosphere of gaseous AX having a specified dew point. CONSTITUTION:A cold rolled stainless steel strip contg.

8. 发明专利

JPS61170599A MANUFACTURE OF STAINLESS STEEL SHEET HAVING FINE SURFACE LUSTER AND SUPERIOR RESISTANCE TO HYDROGEN BRITTLENESS 失效
公开(公告)号：JPS61170599A
公开(公告)日：1986-08-01
申请号：JP1043485
申请日：1985-01-23
申请人： KAWASAKI STEEL CO
发明人： HINO MASAYUKI , SATO SHINJI , ISHIKAWA MASAAKI
IPC分类号： C21D9/52 , C25F1/06
摘要： PURPOSE:To manufacture a stainless steel sheet having fine surface luster and superior resistance to hydrogen brittleness by annealing a cold rolled stainless steel sheet in an atmosphere of an inert gas having a specified dew point and by carrying out electrolysis in an electrolytic bath contg. nitric acid under specified conditions. CONSTITUTION:A cold rolled stainless steel sheet is annealed in an atmosphere of an inert gas having ) of the anode, and t is the electrolysis time (sec)]. Thus, a stainless steel sheet having fine surface luster and superior resistance to hydrogen brittleness is obtd.

9. 发明专利

JPH0447011B2 失效
公开(公告)号：JPH0447011B2
公开(公告)日：1992-07-31
申请号：JP7440684
申请日：1984-04-13
申请人： KAWASAKI STEEL CO
发明人： ISHIKAWA MASAAKI , HINO MASAYUKI , SATO SHINJI
IPC分类号： C21D1/70 , C21D1/72 , C21D9/52 , C23F11/00

10. 发明专利

JPH0346203B2 失效
公开(公告)号：JPH0346203B2
公开(公告)日：1991-07-15
申请号：JP17586284
申请日：1984-08-25
申请人： KAWASAKI STEEL CO
发明人： HINO MASAYUKI , ISHIKAWA MASAAKI , SATO SHINJI
IPC分类号： B21B45/00 , B21B3/02 , B21B45/06

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