Cold-rolled hot-dipped aluminum-zinc steel plate with long spot welding life and high corrosion resistance and manufacturing method thereof

The invention discloses a cold-rolled hot-dip aluminum-zinc steel plate with long spot welding life and high corrosion resistance and a manufacturing method thereof. The technical problems that in the prior art, a cold-rolled hot-dip aluminum-zinc steel plate is short in spot welding life and poor i...

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Bibliographische Detailangaben
Hauptverfasser:	WEI BAOMIN, MU HAILING, DING ZHILONG, WANG XIAOJIAN, YAN BINGHAO, LU WEIXING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADHESIVES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL PAINT OR INK REMOVERS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CORRECTING FLUIDS DIFFUSION TREATMENT OF METALLIC MATERIAL DYES FILLING PASTES GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INKS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The invention discloses a cold-rolled hot-dip aluminum-zinc steel plate with long spot welding life and high corrosion resistance and a manufacturing method thereof. The technical problems that in the prior art, a cold-rolled hot-dip aluminum-zinc steel plate is short in spot welding life and poor in corrosion resistance are mainly solved. According to the technical scheme, the cold-rolled hot-dip aluminum-zinc steel plate with the long spot welding life and the high corrosion resistance comprises a base plate, an aluminum-zinc coating covering the surface of the base plate and a chromium-free fingerprint-resistant film covering the surface of the aluminum-zinc coating, and the base plate comprises, by weight, 0.01%-0.015% of C, smaller than or equal to 0.035% of Si, 0.1%-0.2% of Mn, smaller than or equal to 0.018% of P, smaller than or equal to 0.0115% of S, 0.025%-0.065% of Alt, smaller than or equal to 0.003% of N, 0.01%-0.09% of Ti and the balance Fe. The balance is Fe and inevitable inclusion elements; t