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1. 发明专利

DE69419501D1 未知
公开(公告)号：DE69419501D1
公开(公告)日：1999-08-19
申请号：DE69419501
申请日：1994-11-15
申请人： NIPPON STEEL CORP
发明人： OIKAWA HATSUHIKO , TAKAHASHI YASUO , SAITO TOHRU , OKUDA YUTAKA , NARITA KAZUO , MATSUDA FUMINORI , UENO KATSUTOSHI , WATANABE GORO
IPC分类号： B23K11/11 , B23K11/20
摘要： The present invention relates to a resistance welding method suitable for spot welding of a steel metal plate to which rust preventive treatment is applied through plating process and an aluminum metal plate, and is intended to realize high-quality welding by allowing high-density current to flow between a plated steel plate and an aluminum clad steel plate. An aluminum clad steel plate constituted by a steel layer having raised portions and an aluminum layer is interposed between a plated steel plate and an aluminum metal plate which are to be welded together. A predetermined welding current is supplied to an electrode from an alternating-current power supply. Since the supply path of the welding current is limited by the area of the raised portions, and since molten plating material produced when the plated layer is melted is received in pitch portions between the raised portions, the expansion of the current supply area is prevented. As a result of this, the interface between the plated steel plate and the aluminum clad steel plate is efficiently heated, whereby suitable nuggets are formed on both sides of the aluminum clad steel plate.

2. 发明专利

DE69419501T2 未知
公开(公告)号：DE69419501T2
公开(公告)日：1999-11-18
申请号：DE69419501
申请日：1994-11-15
申请人： NIPPON STEEL CORP
发明人： OIKAWA HATSUHIKO , TAKAHASHI YASUO , SAITO TOHRU , OKUDA YUTAKA , NARITA KAZUO , MATSUDA FUMINORI , UENO KATSUTOSHI , WATANABE GORO
IPC分类号： B23K11/11 , B23K11/20
摘要： The present invention relates to a resistance welding method suitable for spot welding of a steel metal plate to which rust preventive treatment is applied through plating process and an aluminum metal plate, and is intended to realize high-quality welding by allowing high-density current to flow between a plated steel plate and an aluminum clad steel plate. An aluminum clad steel plate constituted by a steel layer having raised portions and an aluminum layer is interposed between a plated steel plate and an aluminum metal plate which are to be welded together. A predetermined welding current is supplied to an electrode from an alternating-current power supply. Since the supply path of the welding current is limited by the area of the raised portions, and since molten plating material produced when the plated layer is melted is received in pitch portions between the raised portions, the expansion of the current supply area is prevented. As a result of this, the interface between the plated steel plate and the aluminum clad steel plate is efficiently heated, whereby suitable nuggets are formed on both sides of the aluminum clad steel plate.

3. 发明专利

JPH07284955A METHOD FOR RESISTANCE WELDING PLATED STEEL MATERIAL AND ALUMINUM BASE MATERIAL AND CLAD MATERIAL 失效
公开(公告)号：JPH07284955A
公开(公告)日：1995-10-31
申请号：JP7346894
申请日：1994-04-12
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV , NIPPON STEEL CORP
发明人： UENO KATSUTOSHI , MATSUDA FUMINORI , WATANABE GORO , OIKAWA HATSUHIKO , OKUDA YUTAKA , NARITA KAZUO
IPC分类号： B23K11/16 , B23K11/11 , B23K11/20 , B23K103/20
摘要： PURPOSE:To carry out a high quality welding by applying a high density current between a plated steel material and a clad material in a resistance welding method being suitable to a spot welding between the steel material executing a corrosion preventing treatment, etc., with a plating work and an aluminum base material. CONSTITUTION:The clad material 15 composed of an iron layer 15a having projecting parts 15c and an aluminum layer 15b is interposed between the plated steel plate 13 as a material to be welded and the aluminum steel plate 14. A specified current is applied to the electrodes 10, 11 from AC electric source 15b. Electric conducting passage of the welding current is limited to the area of the projecting parts 15c, and as molten plating metal by melting the plating layer 13a is incorporated among the pitches of the projecting parts 15c, the enlargement of the electric current conducting area is prevented. In this result, the temp. of the interface between the plated steel plate and the clad material is efficiently raised and the suitable nugget is formed to both surfaces of the clad material 15.

4. 发明专利

JPH08225988A ONE-SIDE PLATED ALUMINUM SHEET 失效
公开(公告)号：JPH08225988A
公开(公告)日：1996-09-03
申请号：JP3363895
申请日：1995-02-22
申请人： NIPPON STEEL CORP , SKY ALUMINIUM
发明人： HONDA KAZUHIKO , HAYASHI KIMITAKA , OKUDA YUTAKA , KURATA MASAHIRO , KOBAYASHI TOSHIAKI
IPC分类号： C25D5/30 , C23C28/00
摘要： PURPOSE: To obtain a plated Al sheet not causing the swelling of a nontreated Al sheet when both the sheets are simultaneously used. CONSTITUTION: One side of an Al sheet is plated with a Zn alloy by 0.1-20g/m . Even when the resultant one-side plated Al sheet and a nontreated Al sheet are simultaneously used, the corrosion resistance of the nontreated Al sheet after coating is not deteriorated by the one-side plated Al sheet.

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