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81. 发明专利

JP2001115079A SURFACE-TREATED STEEL PLATE EXCELLENT IN PROCESSABILITY AND WEATHER RESISTANCE 失效
公开(公告)号：JP2001115079A
公开(公告)日：2001-04-24
申请号：JP29316099
申请日：1999-10-15
申请人： KAWASAKI STEEL CO
发明人： TSURI YUKIROU , KATO CHIAKI
IPC分类号： C09D129/14 , C09D5/08 , C23C22/07
摘要： PROBLEM TO BE SOLVED: To obtain a surface-treated steel plate capable of forming stable rust in early stages not only in rural area, but also in coastal area, free from occurrence of flow rust and elution of environmental pollutant on the way to the above formation, having good adhesiveness of coating film after processing and excellent in processability and weather resistance. SOLUTION: This surface-treated steel plate has iron phosphate film on the surface and has a butylal resin film having 10-50 μm film thickness and containing a first component comprising one or two or more kinds of compounds selected from aluminate, titanate and silicate in an amount of >=1 wt.% based on resin solid content or the first component and a second component comprising one or two or more kinds of compounds selected from an Ni-based inorganic compound, a Cu-based inorganic compound, a phosphate-based inorganic compound and a slightly soluble sulfate as upper layer of the iron phosphate film.

82. 发明专利

JP2000212648A PRODUCTION OF HIGH STRENGTH HOT DIP GALVANIZED STEEL SHEET AND HIGH STRENGTH HOT DIP GALVANNEALED STEEL SHEET, AND HIGH STRENGTH HOT DIP GALVANNEALED STEEL SHEET 失效
公开(公告)号：JP2000212648A
公开(公告)日：2000-08-02
申请号：JP12988799
申请日：1999-05-11
申请人： KAWASAKI STEEL CO
发明人： SUZUKI YOSHITSUGU , TOBIYAMA YOICHI , KATO CHIAKI , OSAWA KAZUNORI , SHINOHARA AKITOSHI
IPC分类号： C23C2/02 , C21D9/46 , C22C38/00 , C22C38/12 , C22C38/38 , C23C2/28 , C23G1/08
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a high strength hot dip galvanized steel sheet and a high strength hot dip galvannealed steel sheet excellent in workability and plating adhesion, and to provide a high strength hot dip galvannealed steel sheet excellent in plating adhesion and corrosion resistance. SOLUTION: The method for producing a high strength hot dip galvanized steel sheet is the one in which a slab of steel contg., by weight, =750 deg.C in an annealing furnace as it is or after cold rolling, is cooled, the thickened layer of the components is removed in the steel of the steel plate surface by pickling, and is next subjected to heating reduction under the reducing conditions of P oxides, and is subsequently applied with hot dip galvanizing, and moreover, alloying treatment is executed. Furthermore, the high strength hot dip galvannealed steel sheet is obtd. by treating a steel sheet contg.

83. 发明专利

JP2000001745A STEEL SHEET FOR DEEP DRAWING, EXCELLENT IN SURFACE CHARACTERISTIC AND CORROSION RESISTANCE, AND ITS MANUFACTURE 失效
公开(公告)号：JP2000001745A
公开(公告)日：2000-01-07
申请号：JP17169898
申请日：1998-06-18
申请人： KAWASAKI STEEL CO
发明人： TOBIYAMA YOICHI , MATSUOKA SAIJI , NABESHIMA SEIJI , KATO CHIAKI
IPC分类号： C21D9/48 , C22C38/00 , C22C38/14
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing technique of a steel sheet for deep drawing, effective in inhibiting the formation of cluster-like inclusions as well as in preventing the clogging of a nozzle at the time of continuous casting and excellent in surface characteristic, corrosion resistance, formability and deep drawability. SOLUTION: As to the steel sheet for deep drawing and its manufacturing method, the steel sheet contains, by weight, 0.010-0.50% Ti [where 0.005-0.1% of the Ti is contained in the form of non-oxide Ti (Ti*)], >=0.0005% Ca and/or metallic REM, and Al in an amount satisfying inequality wt.% Ti/wt.%Al>=5 or inequalities Al

84. 发明专利

JPH11350156A SURFACE TREATED STEEL MATERIAL WITH EXCELLENT WEATHER RESISTANCE 失效
公开(公告)号：JPH11350156A
公开(公告)日：1999-12-21
申请号：JP15409598
申请日：1998-06-03
申请人： KAWASAKI STEEL CO
发明人： KOMORI TSUTOMU , KATO CHIAKI , YAMANE YASUYOSHI , SHIOTANI KAZUHIKO , MORITO NOBUYUKI
IPC分类号： B05D7/14 , B05D7/24 , C23C22/00 , C23C22/62
摘要： PROBLEM TO BE SOLVED: To provide a surface treated steel material with an excellent weather resistance, causing no aesthetic harm and no environmental pollution, and ensuring formation of a uniform and stable stabilizing rust layer. SOLUTION: A steel material is covered with a monolayered coating comprising α-FeOOH and a resin on the surface. α-FeOOH contains V and/or W. Besides one or two or more kinds selected from Cr, Cu, P and Ni are incorporated in α-FeOOH. Optionally the coating is covered with a resinous coating on the surface. α-FeOOH sol is preferable as a starting material for α-FeOOH.

85. 发明专利

JPH11350154A SURFACE TREATED STEEL WITH EXCELLENT WEATHER RESISTANCE 失效
公开(公告)号：JPH11350154A
公开(公告)日：1999-12-21
申请号：JP15409398
申请日：1998-06-03
申请人： KAWASAKI STEEL CO
发明人： KOMORI TSUTOMU , KATO CHIAKI , YAMANE YASUYOSHI , SHIOTANI KAZUHIKO , MORITO NOBUYUKI
IPC分类号： B05D7/14 , B05D7/24 , C23C22/00 , C23C22/62
摘要： PROBLEM TO BE SOLVED: To provide a surface treated steel with an excellent weather resistance, bringing no aesthetic harm and no environmental pollution, and ensuring formation of a uniform and stable stabilizing rust layer. SOLUTION: Steel is covered with a monolayered coating comprising α- FeOOH and a resin on the surface. α-FeOOH contains Mo. Besides one or two or more kinds selected from Cr, Cu, P, Ni, V, and W are incorporated in α-FeOOH. Optionally the coating is covered with a resinous coating on the surface. α-FeOOH sol is preferable as a starting material for α-FeOOH.

86. 发明专利

JPH11172396A AERIAL FLOATING POT OF HOT DIP COATING EQUIPMENT 失效
公开(公告)号：JPH11172396A
公开(公告)日：1999-06-29
申请号：JP34286497
申请日：1997-12-12
申请人： MITSUBISHI HEAVY IND LTD , KAWASAKI STEEL CO , NISSHIN STEEL CO LTD
发明人： YAMASHITA ICHIRO , NAGAI TAKANORI , KATO CHIAKI , AMAGASA TOSHIAKI , HOSOMI KAZUAKI , MORITA YOSHIKAZU , ANDO ATSUSHI
IPC分类号： C23C2/00 , C23C2/06 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide an aerial floating pot of hot dip coating equipment capable of promptly dealing with the sudden fall of a hot dip coating metal without allowing an operator to stand by at all times. SOLUTION: This aerial floating pot of the hot dip coating equipment forms a bottom aperture 12 by holding the internal hot dip coating metal 101 with a high-frequency magnetic field impression device 11 and applies plating on a steel strip 100 by passing the steel strip 100 from the bottom aperture 12 toward an upper aperture 13. A closing plate 17 having a slit to allow the passage of the steel strip 100 is disposed liftably below the bottom aperture 12. A pair of hydraulic cylinders 18 for lifting this closing plate 17 are connected to the closing plate 17 and these hydraulic cylinders 18 are connected a hydraulic device via a selector 19. On the other hand, a light emitting element/light receiving plate 20 which emits IR rays and receives reflected light and a reflection plate are disposed to hold the bottom aperture 12 in a transverse direction near this aperture. This light emitting element/light receiving plate 20 is electrically connected to the input section of a controller and the output section of this controller is electrically connected to the selector 19.

87. 发明专利

JPH1192903A HOT DIP METAL COATING METHOD AND HOT DIP METAL COATING DEVICE 失效
公开(公告)号：JPH1192903A
公开(公告)日：1999-04-06
申请号：JP24847897
申请日：1997-09-12
申请人： KAWASAKI STEEL CO , NISSHIN STEEL CO LTD , MITSUBISHI HEAVY IND LTD
发明人： TADA MASAHIKO , KATO CHIAKI , TORAO AKIRA , HOSOMI KAZUAKI , HAYASHI YOSHIO , NAGAI TAKANORI , HASHIMOTO RITSUO
IPC分类号： C23C2/00 , C23C2/24 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide a hot dip metal coating method and a hot dip metal coating device which can stably and continuously manufacture a hot dip metal coated metallic strip having plating quality uniform in a metallic strip width direction. SOLUTION: When the metallic strip 10 moving upward is made enter a hot dip metal coating bath from a lower part thereof and the metallic strip is wated by delivering and supplying molten metal to the metallic strip while holding the hot dip metal coating bath by applying an alternating magnetic field thereto, the molten metal is delivered and supplied by changing at least one among composition, temperature and flow velocity in the metallic strip width direction so that forming or suppression of an alloy layer at a boundary between a metallic strip base and a hot dip metal coating layer is uniform in a width direction of the metallic strip. Temp. of the molten metal delivered and supplied to both edge parts in the width direction thereof is made lower than temp. of the molten metal delivered and supplied to a central part in the width direction. Otherwise, concentration of a component suppressing the alloy layer at the boundary between the metallic strip base and the hot dip metal coating layer is made higher at the both edge parts in the width direction than the concentration of the concentration at the central part in the width direction. Otherwise,flow rate of the molten metal delivered and supplied to both edge parts in the width direction is preferably made faster than flow rate thereof delivered and supplied to the central part in the width direction.

88. 发明专利

JPH1192902A HOT DIP METAL COATING DEVICE 失效
公开(公告)号：JPH1192902A
公开(公告)日：1999-04-06
申请号：JP24847797
申请日：1997-09-12
申请人： KAWASAKI STEEL CO , NISSHIN STEEL CO LTD , MITSUBISHI HEAVY IND LTD
发明人： KATO CHIAKI , TADA MASAHIKO , MATSUKAWA TOSHITANE , MORITA YOSHIKAZU , HASHIDA TAKUYA , FUKADA YASUO , YAMASHITA ICHIRO
IPC分类号： C23C2/00 , C23C2/24 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide a hot dip metal coating device of an aerial pot system by which a hot dip metal coating bath can be stably held, a hot dip metal coated metallic strip excellent in a surface appearance characteristic can be manufactured and heat treatment for alloying can be reduced. SOLUTION: The hot dip metal coating device has a holding vessel 6 of the hot dip metal coating bath 8 which has openings at upper and lower parts thereof and a magnetic field generator 15 which generates an alternating magnetic field penetrating the metallic strip in a board thickness direction and holds the hot dip metal coating bath and further, a coating weight controller 9. Further, a pair of conductors 7, lower end parts of which are dipped into the hot dip metal coating bath in the holding vessel, which respectively face to width end parts of the metallic strip and further are away from the metallic strip end parts and have electrical connection with the respective metallic strip end parts via electrical contact points 7a above the bath surface of the hot dip metal coating bath, are provided and thereby the metallic strip is heated.

89. 发明专利

JPH10226864A PRODUCTION OF HOT DIP GALVANIZED STEEL SHEET 失效
公开(公告)号：JPH10226864A
公开(公告)日：1998-08-25
申请号：JP33907297
申请日：1997-12-09
申请人： KAWASAKI STEEL CO
发明人： TADA MASAHIKO , KATO CHIAKI , MIYAGAWA KAZUYA
IPC分类号： C23C2/00 , C23C2/06 , C23C2/28 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To produce a hot dip galvanized steel sheet in which the formation of dross is suppressed without using a sink roll. SOLUTION: In the method for producing a hot dip galvanized steel sheet in which a steel sheet 1 is impregnated from the opening part provided on a plating bath 5 and is applied with plating, the bath temp. of a plating bath 4 contg., by weight, 0.12 to 0.45% Al, and the balance Zn with inevitable impurities is held to >=450 deg.C, the plating bath 4 is fed from an auxiliary bath 8 to the bath 5 by 100 to 1000l/min, the surplus plating bath is exhaused into the auxiliary bath, and the steel sheet whose temp. is made higher than the bath temp. is immersed in the plating bath for 0.001 to 0.5sec.

90. 发明专利

JPH1088392A SURFACE TREATED STEEL SHEET FOR WELDED TUBE AND WELDED CAN BODY 失效
公开(公告)号：JPH1088392A
公开(公告)日：1998-04-07
申请号：JP24597396
申请日：1996-09-18
申请人： KAWASAKI STEEL CO
发明人： IZUMI MICHIHIKO , KATO CHIAKI , KAWAMURA KATSUTO , KURIHARA KENJI
IPC分类号： C25D11/38
摘要： PROBLEM TO BE SOLVED: To produce a surface treated steel sheet for a welded can having sufficient seam weldability and corrosion resistance even if it is formed into a can making material of a large vessel with >=1l content volume in which the welding blank size is made large. SOLUTION: This surface treated steel sheet is the one in which chromate layers composed of an Sn-Fe alloy layer, a metallic Sn layer, a metallic Cr layer and a Cr hydrated oxide layer are successively laminated on the surface of a steel sheet from the steel sheet side in order. In this case, the total Sn content in the Sn-Fe alloy layer and the metallic Sn layer is regulated to >0.4 to 2.9g/m and also >20 to 25 to , and the Cr hydrated oxide content in the Cr hydrated oxide layer is regulated to >1 to expressed in terms of Cr.

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