Although some vacuum sterilizers have not reached their service lifetime, some typically intermittent cracks may be detected on the weld of stiffeners and on the inner wall. 特种设备检测中发现一些真空灭菌器在远未达到使用寿命时,灭菌器的内壁就出现断续的裂纹,大部分集中在加强筋与内壁的焊缝处。
Effect of Longitudinal Intermittent Alternative Magnetic Field on Weld Formation in Tungsten Inert-Gas Arc Welding 外加间歇交变纵向磁场对TIG焊缝成形的影响