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li yong re chu li bian xing xiu fu fei jiu ling jian
Author(s): 
Pages: 57-61
Year: Issue:  6
Journal: Heat Treatment of Metals

Keyword:  收缩变形零件尺寸热处理变形热处理方法淬火回火塑性条件再加热内孔热膨胀系数应力方向;
Abstract: <正> 产生热处理变形的基本条件是零件有较大的内应力和较好的塑性。采用相应的热处理方法,调整上述两个基本条件,即可使零件取得预期的变形效果,使零件尺寸复原。其方法可分为三类。一.孔形、饼形零件内孔和外形尺寸的收缩处理零件的内孔或外形尺寸因加工超差或使用中磨损,可用下列收缩处理方法复原。 1 在Ac1温度下加热急冷法 (1)工艺方法零件加热至Ac1
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