unstressing

Welds makes up in the process the substrate not to give off heat, not to distort, the unstressing, does not have the hard spot and the annealing situation.

界第一台铸造缺陷修补机的研制成功，给铸造缺陷修复带来了一次彻底革命！焊补程中基体发热、变形、无应力、无硬点及退火情况。