Entire annealing, spot annealing and high frequency annealing and other measures were adopted afterwards, but had no positive effect. 以后,虽采取了整体退火、局部退火和高频退火等措施,但效果不佳。
The Application of Ceramic Electric Heater in Spot Annealing Treatment Treatment 陶瓷电加热器在局部热处理工艺中的应用
The stress cracks can be eliminated and the white spot tendency can be reduced by annealing for elimination of stress. 采用消除应力退火工艺可消除应力裂纹并降低白点倾向。