Verfahren zum Herstellen von rotationssymmetrischen Bauteilen

摘要

A tube with constant outer diameter and wall thickness is formed into a shaft with esp. smaller diameter and higher wall thickness. A tube with wall thickness corresponding to the smallest wall thickness of the finished part is partially heated, the heated section is axially upset, and radially forged. The tube is a welded not redrawn part. Upsetting and forging take place in a single working stage while a mandrel is inserted into at least a part of the tube.