Invention Grant
US3643485A High-pressure rolling of workpieces 失效
工作高压滚压

High-pressure rolling of workpieces
Abstract:
A die for drawing tubular workpieces has its orifice defined by a ring of small rollers which are rotatable to work the workpieces around their circumference. Means may be present to straighten the tube and the die may include means to make the wall thickness of the workpiece uniform.
Information query
Patent Agency Ranking
0/0