Internally high pressure molded workpiece for vehicles comprises basic workpiece, over which auxiliary workpiece is fitted, forming double-thickness area which is at least as wide as critical expansion zone of basic workpiece

摘要

The internally high pressure molded workpiece for vehicles comprises a basic workpiece (2), over which an auxiliary workpiece (3) is fitted, forming a double-thickness area. The width (5) of this area is 1 -10, especially 1.5 - 3 times that of the critical expansion zone (4) of the basic workpiece.