The impacts of transverse and longitudinal shrinkage of welding seam on underframe positioning.
以及焊缝横向、纵向收缩对底架定位的影响。
2
Expanding and closing technique of core-die of longitudinalseam occlusion machine for automobile silencer and design calculation of such mechanics have been introduced.
介绍了汽车消声器纵缝咬边胀合技术及其咬边芯模机构的设计计算。
3
Burn through is the main problem of longitudinalseam welding of ultra-thin tube with small diameter. Assembly of the joint and welding technology are the key to solve the problem.