Method of producing sheet steel semi-finished products by press-hardening with locally modified structure in places for welds

摘要

Method of production of sheet steel blanks (P) by the method of press-hardening with locally modified structure in places intended for welds, when the steel blanks (P) is heated to a temperature at which the ferritic-peritic structure is fully transformed into austenite, blanks (P) is then locally cooled in the spot for welds to a temperature close to Moceli, followed by heating by conduction of heat from the surroundings and consequently annealing of the haze structure, then the tool is transformed into a spatial extract, which is also turbid in the tool, wherein the sheet metal blank (P) is removed from the tool when the desired temperature is reached.