METHOD OF MANUFACTURE OF CLADDED METAL SHEET Russian patent published in 1998 - IPC

FIELD: metallurgy; rolling plants; manufacture of gas pipes, oil pipes, vessels for aggressive liquids. SUBSTANCE: method comes to assembling a pack of layers of main and cladding metal, heating and hot rolling of pack. Rolling at first pass is carried out with absolute upsetting equal to initial thickness of cladding layer and during the second, third and fourth passes with relative deformation by 20-40% and further on with relative deformation by 30-50% until metal of required thickness is obtained. Metals can be assembled into pack with processing tolerance in width and length of main metal layer determined as stated in description of invention. EFFECT: enlarged operating capabilities. 2 cl, 3 tbl