JPS56105801A - Continuous manufacture of polished steel bar - Google Patents

Abstract

PURPOSE: To automatically, continuously manufacture the polished steel bar, to increase the product output per unit hour, and to plan to improve the product quality, by arranging 4W6 rolling stands to pass and form the steel bar material prepared by the hot rolling work and the hot extrusion work, into the polished steel bar.

CONSTITUTION: The steel bar materials, piled up on the material table of the automatic material feeder 8, is fed one by one to the shot blast machine 3, in which the scale and rust are removed from the surface of the material. Thus cleaned material is successively passed through four rolling stands, for example, comprising a flat pass rolling stand 9, an edging stand 10, a performing rolling stand 11, and a main forming rolling stand 12 for regulating the product size into accuracy; hereby, the material is subjected to a plastic working. Thus plastically worked steel bar is fed to the straightener 5, which removes and straightens the product bend; then, the steel bar is cut by a cutting machine 6 into a required length; these cut bars as the polished steel bars are dropped into the product stock yard 7.

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