Working the metal cold is done with the aim of obtaining a more accurate finish. 对金属进行冷加工是为了得到更精确的光洁度。
This is a method of reliving the internal stress set up in steel during forming, cold working, and cooling after welding or machining. 这是消除内应力的一种方法，内应力是在钢铁的成形中，冷加工中，焊接或切削后的冷却中产生的。
美
