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51. 发明专利

JPH05171392A METHOD FOR GALVANIZING HIGH-STRENGTH STEEL SHEET 失效
公开(公告)号：JPH05171392A
公开(公告)日：1993-07-09
申请号：JP33851191
申请日：1991-12-20
申请人： KAWASAKI STEEL CO
发明人： KATO CHIAKI , UESUGI KOJI , MORITO NOBUYUKI
IPC分类号： C23C2/02 , C23C2/06 , C23C2/28
摘要： PURPOSE:To galvanize and galvanneal a high-strength steel sheet added with an element which is more easily oxidized than iron with the uniformity of the surface improved as compared with the conventional method. CONSTITUTION:The high-strength steel sheet is firstly anodized to form an oxide film on its surface, annealed in a reducing atmosphere contg. hydrogen, then galvanized or further galvannealed.

52. 发明专利

JPH05140792A ALUMINUM ALLOY SHEET EXCELLENT IN PRESS FORMABILITY AND CORROSION RESISTANCE 失效
公开(公告)号：JPH05140792A
公开(公告)日：1993-06-08
申请号：JP30035091
申请日：1991-11-15
申请人： KAWASAKI STEEL CO , FURUKAWA ALUMINIUM
发明人： UESUGI KOJI , MORITO NOBUYUKI , HASHIGUCHI KOICHI , MATSUMOTO YOSHIHIRO
IPC分类号： C25D3/20 , C25D3/22 , C25D5/30
摘要： PURPOSE:To provide an Al alloy sheet chiefly used as lightweight stock for an automobile, especially an Al or Al alloy sheet excellent in press formability and corrosion resistance. CONSTITUTION:This Al alloy sheet excellent in press formability and corrosion resistance has a Zn-based plating layer formed on the surface by 1-50g/m and an Fe-based plating layer formed on the Zn-based plating layer by 1-30g/m .

53. 发明专利

JPH04214895A 失效
公开(公告)号：JPH04214895A
公开(公告)日：1992-08-05
申请号：JP2342991
申请日：1991-02-18
申请人： KAWASAKI STEEL CO
发明人： KATO CHIAKI , UESUGI KOJI , MORITO NOBUYUKI , YASUDA AKIRA , YASUDA KOICHI , KIMURA HAJIME
IPC分类号： C23C2/06 , C23C2/02 , C25D5/10 , C25D5/26 , C25D5/50
摘要： PURPOSE:To offer zinc or zinc alloy galvanized steel sheet excellent in weldability. And to produce stably zinc base electroplated steel sheet free from unplated part and incomplete adhesion and zinc galvanized steel sheet and zinc alloy galvanized steel sheet having alloyed layer free from unplated part and line texture even in the case of steel plate unsuitable for plating. CONSTITUTION:The steel sheet excellent in weldability is a steel sheet consist of the steel sheet adhered with zinc plated layer or zinc alloy plated layer onto at least one face of dead soft steel and having Fe-C plated layer or C concentrated layer formed by diffusion of Fe-C plated layer between the above- mentioned plated layer and base of the steel sheet. After executing Fe-C base plating with 0.01-10g/m amount of adherence on to steel sheet and

54. 发明专利

JPH03257192A SURFACE-TREATED STEEL SHEET HAVING SUPERIOR CORROSION RESISTANCE AFTER COATING 失效
公开(公告)号：JPH03257192A
公开(公告)日：1991-11-15
申请号：JP5467090
申请日：1990-03-06
申请人： KAWASAKI STEEL CO
发明人： UESUGI KOJI , YASUDA AKIRA
IPC分类号： C25D5/10 , C25D5/26
摘要： PURPOSE:To obtain a surface-treated steel sheet having superior chemical con vertibility by forming a specified amt. of zinc or zinc alloy plating on a steel sheet and further forming a specified amt. of iron or iron alloy plating. CONSTITUTION:Zinc plating or zinc alloy plating contg. >=80wt.% zinc as a first layer is formed on at least one side of a steel sheet by 10-50g/cm and iron plating or iron alloy plating contg. >=80wt.% iron as a second layer is further formed by 0.1-0.5g/cm . The resulting plated steel sheet is rolled at 0.2-5% draft. A surface-treated steel sheet having superior resistance to the exfoliation of a coating film due to chipping corrosion during the running of an automobile can be obtd.

55. 发明专利

JPS63179100A DIRECT-CURRENT CONTINUOUS ELECTROPOLISHING METHOD FOR STEEL WIRE ROD 失效
公开(公告)号：JPS63179100A
公开(公告)日：1988-07-23
申请号：JP1213187
申请日：1987-01-21
申请人： KAWASAKI STEEL CO , KAWATETSU KOSEN KOGYO KK
发明人： YANO MITSUO , UESUGI KOJI , OWADA SATORU , OKADA SUSUMU , KATAOKA KUNIHIKO
IPC分类号： C25F7/00 , C25F3/24
摘要： PURPOSE:To smoothly finish the surface of a steel wire rod by DC-electrolytically pickling the steel wire rod by an indirect feeding system using a hydrochloric acid bath, and successively DC-electrolytically pickling the rod by a direct feeding system using a sulfuric acid bath to remove the scales and smuts. CONSTITUTION:The steel wire rod 1 is continuously passed through the electrolytic cells 4-7 of the indirect-feeding electrolytic bath 2 contg. a hydrochloric acid soln., and pickled. An anode plate 12 and a cathode plate 13 are alternately arranged in the respective electric cells 4-7, and the steel wire rod 1 is DC-electrolyzed by the indirect feeding system to descale and electropolish the surface. The electrolysis is carried out by using 1-10 N hydrochloric acid kept at 15-50 deg.C as the electrolytic bath, and the electrolytic current density is controlled to 50-200A/dm . The rod is then passed through the direct-feeding electrolytic bath 3, and electrolytically pickled by a sulfuric acid soln. to remove the smuts on the surface of the steel wire rod 1. This electrolysis is carried out by using 1-10 N sulfuric acid kept at 15-30 deg.C as the electrolytic bath, and the electrolytic current density is adjusted to 10-100A/dm . By this continuous polishing, the clear steel wire rod 1 with the surface smoothed and suitable for thin plating is obtained.

56. 发明专利

JPS63166999A DIRECT CURRENT CONTINUOUS ELECTROLYTIC PICKLING METHOD FOR STEEL WIRE ROD 失效
公开(公告)号：JPS63166999A
公开(公告)日：1988-07-11
申请号：JP30990086
申请日：1986-12-27
申请人： KAWASAKI STEEL CO , KAWATETSU KOSEN KOGYO KK
发明人： YANO MITSUO , UESUGI KOJI , OWADA SATORU , GOSHIMA YOSHINORI , IKEDA TADASHI , KATAOKA KUNIHIKO , OKADA SUSUMU
IPC分类号： C25F1/06
摘要： PURPOSE:To obtain a steel wire rod having a cleaned surface suitable for plating by carrying out DC electrolytic pickling in two stages consisting of an indirect feeding system and a direct feeding system to remove the scales and smut on the surface of the steel wire rod. CONSTITUTION:An anode plate 12 and a cathode plate 13 are alternately arranged in the traveling direction of the steel wire rod 1 to form the first DC electrolytic cell 2 of an indirect feeding system. An electrolytic bath of 1-10 N sulfuric acid is provided in the electrolytic cell 2 and kept at 30-60 deg.C, and the steel wire rod 1 is electrolyzed at 10-70A/dm current density. An electrolytic bath of 1-10 N sulfuric acid is provided in the second DC electrolytic cell 3 of a direct feeding system wherein the steel wire rod 1 is used as the anode and an electrode plate 13 is used as the cathode and kept at 15-30 deg.C, and the rod is electrolyzed at 10-100A/dm current density.

57. 发明专利

JPH06264255A STAINLESS STEEL SHEET EXCELLENT IN WORKABILITY AND CORROSION RESISTANCE 失效
公开(公告)号：JPH06264255A
公开(公告)日：1994-09-20
申请号：JP5117393
申请日：1993-03-12
申请人： KAWASAKI STEEL CO
发明人： TOTSUKA NOBUO , UESUGI KOJI , MOCHIZUKI KAZUO , NOHARA KIYOHIKO , TOGASHI FUSAO
IPC分类号： B05D7/14 , B32B15/08 , B32B27/18 , C23C22/00
摘要： PURPOSE:To provide a stainless steel sheet excellent in cold and warm press workabilities and corrosion resistance. CONSTITUTION:The surface of a stainless steel sheet is applied, as a primary layer, with a chromate layer with 5 to 60mg/m chromium coating weight expressed in terms of metallic chromium, and its surface is applied, as a secondary layer, with an organic resin layer having 0.1 to 5.0mum dry film thickness of an organic resin mixture contg. powdery lubricating agent by 1 to 40 pts.wt. based on 100 pts.wt. organic resin. The amt. of alkali soluble chromium (immersion in a 3% aq. soln. of Na0H at 60 deg.C for 5min) in the chromate film is preferably regulated to

58. 发明专利

JPH06235076A HIGH TENSILE STRENGTH COLD ROLLED STEEL PLATE HAVING HIGH CORROSION RESISTANCE AND HIGH WORKABILITY AND ITS PRODUCTION 失效
公开(公告)号：JPH06235076A
公开(公告)日：1994-08-23
申请号：JP2295493
申请日：1993-02-10
申请人： KAWASAKI STEEL CO
发明人： TOTSUKA NOBUO , UESUGI KOJI , HASHIGUCHI KOICHI , MATSUOKA SAIJI , SAKATA TAKASHI
IPC分类号： C22C38/00 , C22C38/54 , C23C28/00
摘要： PURPOSE:To obtain a high tensile strength cold rolled steel plate having high corrosion resistance and high workability by forming a specific chromated layer and a rustproofing oil layer contg. lubricating grains on dead soft steel incorporated with Ti or Nb, furthermore incorporated with Si, Mn or the like and incorporated with Cu, P, Cr and Mo in specified ralationships. CONSTITUTION:This steel plate has a compsn. contg., by weight, =1.5. This steel plate has sufficient bare corrosion resistance and corrosion resistance after coating without being galvanized. The surface of the steel is applied with a chromate treated layer with 40 to 200mg/m coating weight expressed in terms of metallic Cr and >=5mg/m alkali-elutable Cr content. On the surface of the treated layer, a rustproofing layer is formed by applying 0.05 to 30.0% inorganic lubricating grains and/or 0.05 to 20% organic lubricating grains at 0.1 to 5.0mg/m coated weight in total.

59. 发明专利

JPH06210792A SURFACE-TREATED ALUMINUM MATERIAL WITH EXCELLENT SPOT RESISTANCE WELDABILITY, MACHINABILITY AND CORROSION RESISTANCE 失效
公开(公告)号：JPH06210792A
公开(公告)日：1994-08-02
申请号：JP3557093
申请日：1993-02-24
申请人： KAWASAKI STEEL CO , FURUKAWA ALUMINIUM
发明人： TOTSUKA NOBUO , NISHIYAMA NAOKI , MABUCHI MASAKI , UESUGI KOJI , IKEDA TOMOMASA , HASHIGUCHI KOICHI , YAMATO KOJI , NANBAE MOTOHIRO
IPC分类号： B05D3/10 , B05D5/12 , B05D7/14 , B23K11/11 , B32B15/08 , C23C22/00
摘要： PURPOSE:To obtain an organically coated aluminum material which improves the life of an electrode during spot resistance welding by forming a specific amount of chromate layer as a first layer and an organic resin layer containing powder lubricant and conductive microparticles of specific shape as a second layer on the aluminum material. CONSTITUTION:An attachment amount of 5 to 100mg/m in terms of metal chromium of chromate-treated coat is formed as a first layer on the surface of an aluminum material. On this first layer, an organic resin mixture coat is formed as a second layer in a dried coat thickness of 0.05 to 3.0mum. This organic resin mixture coat is composed of 100 pts.wt. of organic resin, a powder lubricant with an average grain size of 0.05 to 20mum and a coat thickness 1.0 to 10 times the dry coat thickness of an organic resin mixture coat, 0.5 to 40 pts.wt. of conductive microparticles with an average diameter of 0.05 to 5mum and a coat thickness 1.0 to 2 times the coat thickness of an organic resin mixture coat. Consequently, it is possible to obtain a surface- treated aluminum material with excellent spot resistance weldability, machinability and corrosion resistance.

60. 发明专利

JPH06116786A ALUMINUM ALLOY SHEET EXCELLENT IN FORMABILITY, WELDABILITY, CORROSION RESISTANCE AND IMAGE CLARITY AFTER COATING 失效
公开(公告)号：JPH06116786A
公开(公告)日：1994-04-26
申请号：JP26611392
申请日：1992-10-05
申请人： KAWASAKI STEEL CO , FURUKAWA ALUMINIUM
发明人： UESUGI KOJI , IMANAKA MAKOTO , TOTSUKA NOBUO , MABUCHI MASAKI , NISHIYAMA NAOKI , TANI TOSHIO , NANBAE MOTOHIRO
IPC分类号： C25D11/04 , C25D11/16 , C25D11/18
摘要： PURPOSE:To provide an aluminum alloy sheet remarkably improved in formability, weldability, corrosion resistance and image clarity after coating and improved in various properties to a level enabling even the application of the existing steel sheet producing line. CONSTITUTION:The surface of an aluminum alloy sheet has an anodically oxidized film of 0.01 to 10mum, and in which the maximum roughness (Rmax) of the surface is regulated to >=8mum as well as the area ratio of the surface positioned between the highest projecting part on the surface of the sheet and a position at which the Rmax is reduced by 20% than the height projecting part occupies 40 to 90%.

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