Apparatus for making a work roll with dulled surface having geometrically patterned uneven dulled sections for temper rolling.

摘要

A work roll has a regularly and geometrically patterned uneven dulled section (1) on the roll surface (3). Each uneven dulled section is composed of a crest (2) and concave (1a) and is of crater-like configuration. In order to obtain good performance in temper rolling, the crest is in a form of an annular ring extending around the edge of the concave (1a). According to the invention, pattern of arrangement of the uneven dulled sections is determined in relation to the diameter (D) of the ring-shaped crests of the uneven dulled section so as to obtain optimum performance in producing good quality exhibiting substantially high image clarify as coated by paint, enamel or so forth.