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61. 发明专利

JPH02170923A MANUFACTURE OF COLD ROLLED SHEET OF CHROMIUM STAINLESS STEEL EXCELLENT IN RIDGING RESISTANCE AND PRESS FORMABILITY 失效
公开(公告)号：JPH02170923A
公开(公告)日：1990-07-02
申请号：JP32376288
申请日：1988-12-23
申请人： KAWASAKI STEEL CO
发明人： MIURA KAZUYA , KAWASAKI TATSUO
IPC分类号： C21D9/46 , C21D8/04
摘要： PURPOSE:To manufacture a cold rolled sheet of Cr stainless steel excellent in ridging resistance and formability by applying preliminary slight-degree cold rolling to a Cr stainless steel prior to softening replacing hot-rolled plate annealing and then subjecting the above to cold rolling and finish annealing. CONSTITUTION:A continuously cast slab of Cr stainless steel containing 13.0-20.0wt.% Cr is heated up to 1200 deg.C and hot-rolled into a plate stock, which is subjected to preliminary cold rolling at 2-30% draft. Subsequently, softening is applied to the resulting sheet at a temp. between 700 deg.C and the Ac1 transformation point of the alloy or 1100 deg.C for

62. 发明专利

JPH027389B2 失效
公开(公告)号：JPH027389B2
公开(公告)日：1990-02-16
申请号：JP22117783
申请日：1983-11-24
申请人： KAWASAKI STEEL CO
发明人： OOTSUBO HIROSHI , TAKADA ISAO , KAWASAKI TATSUO
IPC分类号： C22C38/00 , C22C38/44 , C22C38/54

63. 发明专利

JPH0247300A METHOD FOR DESCALING STAINLESS STEEL 失效
公开(公告)号：JPH0247300A
公开(公告)日：1990-02-16
申请号：JP19783888
申请日：1988-08-10
申请人： KAWASAKI STEEL CO
发明人： OWADA SATORU , YASUHARA HIDEKO , KAWASAKI TATSUO , I KANJI
IPC分类号： C25F1/06
摘要： PURPOSE:To descale a cold-rolled and annealed stainless steel sheet in a short time and to improve the corrosion resistance of its surface at the time of removing the oxide scale on the sheet by electrolytic pickling by using an aq. sulfuric acid soln. having a specified composition as a pickling soln., alternately using the sheet as a cathode and an anode, and making the final polarity of the sheet leaving an electrolytic cell negative. CONSTITUTION:A cold-rolled stainless steel sheet is annealed, and the sheet having oxide scales on its surface is electrolytically pickled. In this case, the sheet is dipped in the aq. sulfuric acid soln. contg. 900-1200g/l sulfuric acid and >=10g/l one or >=2 kinds of metals among Zn, Sn, Mo, Cr, Ti, Co, Ni and Cd, a current is applied while making the polarity of the sheet positive and negative more than once, and the final polarity of the sheet leaving the electrolytic cell is made negative. Consequently, the surface can be descaled in a short time, and a stainless steel sheet having a highly corrosion-resistant surface is obtained after descaling.

64. 发明专利

JPH0234764A FAR INFRARED EMITTER EXCELLENT IN CORROSION RESISTANCE AND ITS PRODUCTION 失效
公开(公告)号：JPH0234764A
公开(公告)日：1990-02-05
申请号：JP18463088
申请日：1988-07-26
申请人： KAWASAKI STEEL CO , OSAKA GAS CO LTD
发明人： ISHII KAZUHIDE , KAWASAKI TATSUO , KURIYAMA NORIYUKI , DOI SHOJI , NAKASHIBA AKIO , MIYAZAKI SOHEI
IPC分类号： F24C15/24 , C22C38/00 , C22C38/22 , C22C38/58 , C23C8/14 , C23C8/18 , H05B3/10
摘要： PURPOSE:To improve corrosion resistance by specifying the composition of steel and the thickness of oxide film, respectively, in an emitter made of stainless steel on which an oxide film is formed by means of high-temp. oxidation. CONSTITUTION:An Fe-Cr-Mo stainless steel containing, by weight, 20-35% Cr, 0.5-5.0% Mo, =0.2mg/cm thickness is formed on the surface. As to the oxidation treatment conditions, when the temp. is 900- =142.5-0.125T [where (t) means holding time (min) and T means temperature ( deg.C)] is satisfied, and, when it is 1100-1200 deg.C, holding time is regulated to >=5min. When Mo content in the above steel is less than 0.5%, corrosion resistance after high-temp. oxidation treatment becomes insufficient, and, when it exceeds 5.0%, steel becomes brittle. Further, the temperature and time in the above-mentioned oxidation treatment are necessary to form the oxide film of >=0.20mg/cm thickness to obtain sufficient far infrared radiation characteristics.

65. 发明专利

JPH01255648A FE-CR-AL ALLOY EXCELLENT IN OXIDATION RESISTANCE AND RESISTANCE TO HIGH TEMPERATURE EMBRITTLEMENT 失效
公开(公告)号：JPH01255648A
公开(公告)日：1989-10-12
申请号：JP8221688
申请日：1988-04-05
申请人： KAWASAKI STEEL CO
发明人： ISHII KAZUHIDE , KAWASAKI TATSUO
IPC分类号： C22C38/00 , C22C38/28
摘要： PURPOSE:To improve oxidation resistance and resistance to high temperature embrittlement by adding specific amounts of Ti and Nb to an Fe-Cr-Al alloy having a specific composition in which lanthanide excluding Ce is added. CONSTITUTION:This Fe-Cr-Al alloy has a composition consisting of, by weight, =0.01% each of Nb and Ti are used in combination, but oxidation resistance is deteriorated when the additive quantities of both exceed 10%, respectively.

66. 发明专利

JPH01184255A FAR INFRARED RADIATOR AND ITS PRODUCTION 失效
公开(公告)号：JPH01184255A
公开(公告)日：1989-07-21
申请号：JP705888
申请日：1988-01-18
申请人： KAWASAKI STEEL CO , OSAKA GAS CO LTD
发明人： KAWASAKI TATSUO , ISHII KAZUHIDE
IPC分类号： C23C8/18 , C22C38/00 , C22C38/18 , C22C38/28
摘要： PURPOSE:To prevent deterioration in radiation characteristics of the title radiator by subjecting a stainless steel in which respective contents of C, Si, Mn, Cr, Al, Ce, N, Zr, V and Ta are specified to heating under prescribed conditions and forming layer containing Al2O3 on the surface. CONSTITUTION:A stainless steel which has a composition consisting of, by weight,

67. 发明专利

JPH01172599A METHOD FOR ELECTROLYTICALLY DESCALING ANNEALED BAND STAINLESS STEEL 失效
公开(公告)号：JPH01172599A
公开(公告)日：1989-07-07
申请号：JP32747687
申请日：1987-12-25
申请人： KAWASAKI STEEL CO
发明人： YASUHARA HIDEKO , KAWASAKI TATSUO , I KANJI
IPC分类号： C25F1/06 , C25F7/00
摘要： PURPOSE:To descale an annealed band stainless steel with high current efficiency by carrying out constant-current electrolysis at the current density fulfilling specified conditions. CONSTITUTION:When an annealed band stainless steel is electrolytically descaled, constant-current electrolysis is carried out (1) at the current density higher than the current density corresponding to 1.8V potential in the anode polarization curve and (2) at the current density exceeding the maximum current density of the active state only in the overpassive region, namely, on the anode polarization curve, and the stainless steel is descaled. For the purpose, the anode polarization curve is obtained in accordance with the kind, concn., composition, and temp. condition of the scale and electrolyte based on the kind of the band stainless steel or annealing condition, and the treating condition is determined. When descaling is carried out, the conditions of the various electrolytes are appropriately changed and combined with the kind of steel, the various electrolyte conditions and current density are predetermined by model tests, the operating conditions are selected from the data, and electrolytic descaling is carried out.

68. 发明专利

JPH01165746A STAINLESS STEEL FOR LIQUOR TANK 失效
公开(公告)号：JPH01165746A
公开(公告)日：1989-06-29
申请号：JP32334987
申请日：1987-12-21
申请人： KAWASAKI STEEL CO
发明人： SONE YUJI , KAWASAKI TATSUO , KURAHASHI HAYAO
IPC分类号： C22C38/00 , C22C38/28 , C22C38/30
摘要： PURPOSE:To produce a liquor tank not causing the degeneration of liquors due to the leaching of Fe ions by using a stainless steel having a specified compsn. CONSTITUTION:A stainless steel having a compsn. consisting of, by weight,

69. 发明专利

JPS63138783A MANUFACTURE OF MOTHER PLATE FOR SOLAR CELL SUBSTRATE 失效
公开(公告)号：JPS63138783A
公开(公告)日：1988-06-10
申请号：JP28638386
申请日：1986-12-01
申请人： KAWASAKI STEEL CO
发明人： HASUNO SADAO , KAWASAKI TATSUO
IPC分类号： B21B3/02 , B21B3/00 , H01L31/04
摘要： PURPOSE:To contrive a significant reduction in cost by a very easy process by a method wherein the surface of a stainless sheet steel manufactured by cold rolling is subjected to acid fusion. CONSTITUTION:An annealing structure to generate a priority fusion at a crystal grain boundary in the case of acid fusion is changed into a uniformly processed structure by performing a cold rolling of a depressing rate of 20% or more. By fusing the surface of a stainless sheet steel of a thickness of 0.5 mm or less in a thickness of 0.5mum or more by acid fusion, a fine flaw on the surface of the stainless sheet steel is turned into a gentle surface. Hereby, a low-cost and high-efficiency mother plate for solar cell substrate; which has a high mechanical strengh, is tough and has a good flexibility; can be easily manufactured.

70. 发明专利

JPS613472A SUBSTRATE OF SOLAR CELL 失效
公开(公告)号：JPS613472A
公开(公告)日：1986-01-09
申请号：JP12290784
申请日：1984-06-16
申请人： KAWASAKI STEEL CO
发明人： HASUNO SADAO , NARUTANI SATORU , KAWASAKI TATSUO
IPC分类号： C25D7/00 , H01L31/04 , H01L31/18 , H01L51/00 , H01L51/30
摘要： PURPOSE:To obtain the title substrate which can be supplied at a low cost in a mass by a continuous method of high productivity by using a surface-treated steel plate plated with Ni and/or Cr of specific thickness of a cold-rolled steel plate of specific composition. CONSTITUTION:This invention uses a surface-treated steel plate plated with Ni and/or Cr to a thickness of 1mum or more on the original plate made of a cold- rolled steel plate having the composition of 0.1wt% or less C, 1.0wt% or less Si, 2.0wt% or less Mn, 0.05wt% or less Al, and both 0.02wt% or less P and S. The necessary thickness of Ni and/or Cr plating depends on the surface roughness of a cold-rolled plate to be plated. It is necessary to make the plating layer thicker with the increase in the maximum surface roughness Rmax. Ni plating can obtain plating of required thickness efficiently in a short time, whereas this plating is somewhat low in glossiness of the plating surface. Contrarily, Cr plating requires a large current and a long time. Further improvement of the surface- treated steel plate in surface roughness and in glossiness is enabled by skin path rolling. It is preferable to carry out the rolling at a rate of 0.1-5%.

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