Lager dies are usually roughed out, then stress-relieved and finish-machined.
大型模具一般先粗制毛坯，然后应力消除，再进行成形加工。
2
The power end :The frame is welded steel-plate construction. It is stress-relieved after welding.
动力端：壳体为钢板焊接结构，焊后消除内应力。
3
The selection of bonded prestressing tendon and unbonded prestressing tendon, low-relaxation strand and stress-relieved strand in the design are also discussed.