增加机械加工性能。
Tool steels are normally spheroidized to improve machinability.
工具钢通常要用球化来提高切削性。
The result is a component with local high strength in the rapidly cooled zones and locally altered metallurgical properties to improve machinability in the more slowly cooled zones.
结果是可以得到一种构件，其在快速冷却的区域中具有局部的高强度，而在较缓慢冷却的区域中具有局部改变的冶金性能以改进机械加工性。
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