FIELD: technological processes.
SUBSTANCE: present invention relates to clad steel sheet for hot pressing and method of its hot pressing. Steel sheet contains Al-clad layer formed on one surface or on both surfaces of said steel sheet, and surface coating layer formed on said Al-clad layer. Said surface coating layer contains at least one compound of zinc, selected from group consisting of zinc hydroxide and zinc salt and organic acid. During implementation of hot pressing method of said clad steel sheet is heated above clad steel sheet from temperature of 50 °C to temperature at 10 °C below maximum peak temperature of 850-1,000 °C and pressing of said heated clad steel sheet.
EFFECT: providing clad aluminium steel plate having improved lubricating power in hot state, adhesion of coating, suitability for point welding and corrosion resistance.
8 cl, 2 dwg, 7 tbl, 4 ex
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Year |
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