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71. 发明专利

JPS59116391A Production of steel sheet electroplated on one side 失效
标题翻译：生产在一侧电镀的钢板
公开(公告)号：JPS59116391A
公开(公告)日：1984-07-05
申请号：JP22549282
申请日：1982-12-21
申请人： Sumitomo Metal Ind Ltd
发明人： WAKANO SHIGERU , SAKOTA AKITO , FUKUI KUNIHIRO , NISHIHARA MINORU
IPC分类号： C25D5/26 , C25D5/02 , C25D5/48 , C25F5/00
CPC分类号： C25D5/48 , C25D5/028 , C25F5/00
摘要： PURPOSE:To improve the suitability to chemical conversion of both sides in the production of a steel sheet electroplated on one side wherein electroplating is applied thinly on the non-plating side as well and is thereafter removed by reverse current by conducting slight current on the plating side or maintaining said side under no current. CONSTITUTION:A steel strip 1 which is subjected to defatting, pickling and washing is passed in a plating cell 5. Strong current is conducted to a lower anode 13 with the strip 1 as cathode and weak current to an upper anode 12, and thin plating is applied on one side of the steel strip. The strip is passed in a treating cell after washing. An indirect current conduction method wherein the thin plating layer atop the strip 1 is removed by conducting current between a lower anode 18 and an upper cathode 17 and plating is applied on the bottom surface as well by weak current is executed or a direct conduction method wherein strong current is conducted between the strip 1 and the cathode 17 through a roll 19 and weak current is conducted between the strip 1 and the anode 18 is executed in the treatment cell. A method wherein the anode 18 is omitted is equally good. The suitability to chemical conversion of the strip 1 is improved by such method. The indirect current conduction method requires high voltage and makes cost high and therefore the direct current conduction method is preferred.
摘要翻译：目的：为了提高在一侧电镀薄钢板的制造中两面化学转化的适用性，其中在非电镀面上薄薄地施加电镀，然后通过在电镀上施加轻微的电流而通过反向电流除去侧面或维持所述的一边没有电流。构成：经过脱脂，酸洗和洗涤的钢带1通过电镀槽5.强电流传导到下阳极13，带1作为阴极，弱电流到上阳极12，薄电镀应用于钢带的一侧。洗涤后，条带在处理池中通过。间接电流传导方法，其中通过在下阳极18和上阴极17之间传导电流来去除带1顶部的薄镀层，并且通过执行弱电流也在底表面上施加电镀或直接导电方法，其中通过辊19在带1和阴极17之间传导强电流，并且在处理室中执行在带1和阳极18之间传导的弱电流。忽略阳极18的方法同样好。通过这种方法改善了条带1的化学转化的适用性。间接电流传导方法需要高电压并使成本高，因此直流导通方法是优选的。

72. 发明专利

JPS5925008B2 JPS5925008B2 - 失效
公开(公告)号：JPS5925008B2
公开(公告)日：1984-06-13
申请号：JP11833379
申请日：1979-09-13
申请人： Sumitomo Metal Ind
发明人： TAGA MASAYUKI , ISHIMURA SUSUMU , MASUDA SEIICHI , OKAMOTO ATSUKI , WAKANO SHIGERU , YANAI AKIHIRO
IPC分类号： C21C5/34 , B22D11/00 , C21C5/35 , C21C7/00 , C21C7/06 , C21D9/46

73. 发明专利

JPS58210190A WELDABLE COATED STEEL PLATE 失效
公开(公告)号：JPS58210190A
公开(公告)日：1983-12-07
申请号：JP9179182
申请日：1982-05-29
申请人： SUMITOMO METAL IND
发明人： WAKANO SHIGERU , SHIODA TOSHIAKI , MATSUO SACHIO
IPC分类号： C25D11/38 , C25D5/10 , C25D5/26
摘要： PURPOSE:To enhance the weldability of a coated steel plate, the adhesive strength to the paint film and the corrosion resistance by plating an Ni-Zn alloy layer having a single gamma phase formed on a steel plate by plating with an Fe-Zn alloy, chromating the Fe-Zn alloy layer, and coating it with paint contg. an electrically conductive substance. CONSTITUTION:An Ni-Zn alloy layer having a single gamma phase is formed by plating as the 1st layer of a double-plated steel plate as a base material. An Fe-Zn alloy layer contg. 10-40wt% Fe is formed as the 2nd layer on the Ni-Zn alloy layer by plating. The plated steel plate is chromated, dried, and coated with paint contg. an electrically conductive substance such as powder of Zn, Al, Sn, Fe, Ni, Co, Cr, Mn or an alloy thereof. The paint film is baked together with the chromate film.

74. 发明专利

JPS57207199A SURFACE TREATED STEEL PLATE 失效
公开(公告)号：JPS57207199A
公开(公告)日：1982-12-18
申请号：JP9286381
申请日：1981-06-15
申请人： SUMITOMO METAL IND
发明人： ASANO KAZUO , NISHIHARA MINORU , SHIBUYA ATSUYOSHI , WAKANO SHIGERU
IPC分类号： C25D11/38 , C25D3/12 , C25D3/22 , C25D5/26
摘要： PURPOSE:To obtain a steel plate of excellent corrosion resistance, superior secondary adhesiveness of paint films and superior stripping resistance of the paint films coated on paint surfaces by plating Ni-Zn alloy on the surface of a steel plate then forming a chromate film on the plated surface. CONSTITUTION:A steel plate as an exterior panel material for automobiles is first plated with an Ni-Zn alloy of 9-20% content of Ni. This Ni-Zn plated steel plate is immersed in an aq. soln. contg. CrO3, H2SO4, whereby a chromate film of Cr pickup is formed. If paint is coated on this, the paint film is difficult to strip off from the steel plate, and the external panel material of superior corrosion resistance for automobiles is obtained.

75. 发明专利

JPS56102585A PRODUCTION OF COLDDROLLED STEEL PLATE EXCELLENT IN CONVERSION TREATMENT PROPERTY 失效
公开(公告)号：JPS56102585A
公开(公告)日：1981-08-17
申请号：JP596480
申请日：1980-01-21
申请人： SUMITOMO METAL IND
发明人： WAKANO SHIGERU
IPC分类号： C23G1/08 , C23C22/78
摘要： PURPOSE:To enhance the conversion, treatment property of the cold-rolled coil, by pickling the cold rolled coil with the aqueous solution of hydrochloric acid or sulfuric acid containing more than a specified amount of ions of Co, Ni and Sn after recrystallization and annealing. CONSTITUTION:The cold rolled coil is pickled with an aqueous solution of hydrochloric acid or sulfuric acid containing one or more than two of the ions of Co, Ni and Sn in the range of an amount of 1X10 -0.1mol/l after recrystallization and annealing. As a result, a high tensil strength steel plate is obtained with an excellent conversion treatment property plus fine and minute chemical conversion crystal.

76. 发明专利

JPH0873933A PRODUCTION OF AUTOOBILE HOT ROLLED STEEL SHEET EXCELLENT IN CORROSION RESISTANCE 失效
公开(公告)号：JPH0873933A
公开(公告)日：1996-03-19
申请号：JP21740294
申请日：1994-09-12
申请人： SUMITOMO METAL IND
发明人： KOMATSUBARA NOZOMI , NAGAMICHI TOKIAKI , KUNISHIGE KAZUTOSHI , SAKOTA AKITO , WAKANO SHIGERU
IPC分类号： C21D8/02 , C21D9/46 , C22C38/00 , C22C38/16 , C22C38/54
摘要： PURPOSE: To provide a method for producing a hot rolled steel sheet excellent in corrosion resistance in an environment contg. chlorides and furthermore good in workability. CONSTITUTION: A steel contg. 0.0001 to 0.18% C, 0.30 to 1.5% Si, 0.10 to 2.O% Mn, 0.020 to O.12% P, =1150 deg.C, it is subjected to hot rolling. The hot rolling is completed at >=800 deg.C, and it is coiled at

77. 发明专利

JPH0849091A PRODUCTION OF ELECTROGALVANIZED STEEL SHEET 失效
公开(公告)号：JPH0849091A
公开(公告)日：1996-02-20
申请号：JP20128994
申请日：1994-08-03
申请人： SUMITOMO METAL IND
发明人： KIMOTO MASAYA , WAKANO SHIGERU , YOSHIKAWA YUKIHIRO
IPC分类号： C25D3/12 , C25D3/20 , C25D3/22 , C25D3/38 , C25D3/56 , C25D5/26
摘要： PURPOSE:To produce an electrogalvanized steel sheet in which not only 'the dispersion of color tones among lots' but also 'the nonuniformity in the appearance in the same lot' liable to generate in the case of chromate treatment can sufficiently be suppressed. CONSTITUTION:At the time of applying electrogalvanizing to a steel sheet, on the surface of the steel sheet, a coating layer of 0.001 to 0.5g/m coating weight constituted of one or more kinds among Ti, Mn, Ni, Co, Cu, Cr, Fe, Mo, W is previously formed, and after that, it is electrogalvanized. As for the formation of the coating layer, an electroplating method, an electroless plating method, a vacuum depositing method, an ion plating method or the like can be adopted.

78. 发明专利

JPH0813114A METHOD AND APPARATUS FOR PRODUCING HOT DIP GALVANIZED STEEL SHEET 失效
公开(公告)号：JPH0813114A
公开(公告)日：1996-01-16
申请号：JP9575195
申请日：1995-04-21
申请人： SUMITOMO METAL IND
发明人： HORI MASAHIKO , WAKANO SHIGERU , KASEDA YOSHIYUKI
IPC分类号： B21B3/02 , C21D9/46 , C22C38/00 , C23C2/02 , C23C2/06 , C23C2/28
摘要： PURPOSE:To produce a hot dip galvanized steel sheet free from uncoated spot even in the case of high-Si high-P steel and also to produce a galvannealed steel sheet without reducing productivity. CONSTITUTION:At the time of applying hot dip galvanizing or further alloying treatment to a steel sheet, roll cross rolling is applied at 0.1-2 deg. cross angle at 0.05-20% draft in the stage prior to a plating stage. Further, at the time of performing roll cross rolling in the stage before a heating stage in a reducing atmosphere, 0.3-5% draft is preferred. As to an apparatus used at this time, a continuous hot dip galvanizing apparatus having a rolling mill in which work rolls of more than one stage are crossed on the upstream side of a plating bath is used.

79. 发明专利

JPH0797670A GALVANIZING METHOD FOR SILICON-CONTAINING STEEL SHEET 失效
公开(公告)号：JPH0797670A
公开(公告)日：1995-04-11
申请号：JP24405493
申请日：1993-09-30
申请人： SUMITOMO METAL IND
发明人： HORI MASAHIKO , WAKANO SHIGERU , USUKI TOMOAKI
IPC分类号： C23C2/02 , C21D9/56 , C23C2/06 , C23C2/28 , C23C2/40
摘要： PURPOSE:To produce a galvanized steel sheet or galvannealed steel sheet which consists of a steel sheet contg. Si at 0.2wt.% or greater as a base metal and does not cause non-plating. CONSTITUTION:The steel sheet contg. Si and Mn respectively at 0.2wt.% or over is subjected successively to the following stages (1) to (3) after cold rolling or hot rolling, then to galvanizing. (1) The stage for heating the steel sheet in a temp. region of 700 deg.C in an oxidative atmosphere and adhering iron oxide of 0.5 to 5.0g/m in terms of Fe to the surfaces thereof. (2) The stage for treating the steel sheet in a reducing atmosphere of >=-40 to =30 seconds in a temp. region of 550 to 750 deg.C. (3) The stage for heat treating the steel sheet in a reducing atmosphere of >=-30 to

80. 发明专利

JPH06212383A HOT DIP GALVANIZING METHOD FOR SILICON-CONTAINING STEEL SHEET 失效
公开(公告)号：JPH06212383A
公开(公告)日：1994-08-02
申请号：JP551893
申请日：1993-01-18
申请人： SUMITOMO METAL IND
发明人： HORI MASAHIKO , WAKANO SHIGERU
IPC分类号： C23C2/02 , C21D1/76 , C23C2/28 , C23C2/40 , C23C8/18
摘要： PURPOSE:To producing a hot dip galvanized or galvannealed steel sheet free from the generation of nonplating by using a steel sheet contg. a specified amt. of Si as a base metal. CONSTITUTION:(1) This is a method for galvanized steel sheet by using a hot rolled steel sheet or a cold rolled steel sheet contg. >=0.2wt.% Si as a base metal, and in which a steel sheet whose surface is ground away by 0.4 to 5g/m is treated in an oxidizing atmosphere of 550 to 750 deg.C to form an iron oxide layer of 0.7 to 5.0g/m expressed in terms of Fe on the surface of the steel sheet, then, it is reduced at 650 to 750 deg.C, and after that hot dip galvanizing by the applied. (2) After the application of the galvanizing by the stage in (1), alloying heat treatment is furthermore executed to form a galvannealed steel sheet. In the case a cold rolled steel sheet is used as the base metal, the treatment by the processes of (1) and (2) is executed preferably after annealing is preliminarily executed.

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