Method of controlling the wall thickness within a tube elongater by utilizing a screw down control

摘要

This invention relates to a method of controlling the wall thickness of tubes. A special depressing mechanism is provided on the specific stands of a tube elongater in a step prior to a reducing mill so that, by the opening and tightening control of this mechanism, the reduction of the yield by the phenomenon of the ends thickening of a tube in the reducing mill may be prevented. The response to the depression may be quick and thus the efficiency of the production may be remarkably improved.