STEEL PLATE WITH METAL COATING AND METHOD USED FOR HOT FORMING OF STEEL PLATE WITH METAL COATING Russian patent published in 2012 - IPC C23C28/00 B21D22/20 C23C2/12 

FIELD: metallurgy.

SUBSTANCE: steel plate with metal coating for hot forming is made from steel containing the following components, wt %, at least one or more: 0.1-0.4 C, 0.01-0.6 Si, 0.5-3 Mn, 0.01-0.1 Ti, 0.0001-0.1 B, iron and inevitable impurities are the rest; steel plate has metal coating layer from aluminium or its alloy, which is created on one or both sides of steel plate, and surface coating layer applied to it and containing the compound with crystalline structure of wurtzite, which has good lubricating ability, which prevents occurrence of non-uniformity of thickness of metal coating during heating process during forming.

EFFECT: use of the proposed steel plate with the coating, which has improved formability, allows improving the efficiency at hot forming.

8 cl, 5 tbl, 4 dwg, 3 ex