专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

DE1951288A1 未知
公开(公告)号：DE1951288A1
公开(公告)日：1970-12-03
申请号：DE1951288
申请日：1969-10-10
申请人： ABBEY JUN NELSON DANIEL
发明人： W VASSAR CLYDE
IPC分类号： B21C37/08 , B23K31/02
摘要： The testing of welded seam tubing in a tube mill which commences with an endless metallic strip or ribbon and ends with a welded seam tube cut to a predetermined length after passing through a series of roll passes to form the cylindrical tube, welding the free abutting edges, sizing and shaping the tube and finally recurrently cutting the continuous tube into the desired lengths. After the welding station the tubing is subjected to deformation pressures in order to detect imperfections in the welded seam as well as to the parent metal itself adjacent to the weld, thereby to improve the end product and militate against leaks. Thereafter, the tubing is sized and straightened to its desired shape. Imperfections disclosed by such deformations are determined as the tube travels by accepted methods, such as by ultrasonic testing devices, and thereafter such imperfect areas are either cut out, reworked or discarded as scrap.

IPRDB