JPS561203A - Manufacture of rolled thick plate - Google Patents

Abstract

PURPOSE: To obtain the rolled product with less amount of defective part to be cropped, by carrying out the edging work at the final pass of the rolling process in order to obtain a dog-bone type sectioned blank slab, and by carrying out the first pass of the following thick plate rolling process in the longitudinal or the broadside direction correspondingly to the forecast for the final flat shape.

CONSTITUTION: The final pass of the rolling process is carried out by the vertical roll for edging the material which is then cut to obtain the dog-bone type sectioned slab 8. By taking this slab 8 as the starting material, or otherwise, according to the forecast section shape of the final rolled product when the slab does not have this dog-bone type section, the first pass of the thick plate rolling process is carried out by selecting either the longitudinal rolling work as the forming pass or the broadside rolling work for increasing the breadth. Hereby, the final thick plate product, hardly including the anomalous part like as the head and tail tongues of the thick plate product 8', can be manufactured.

COPYRIGHT: (C)1981,JPO&Japio