齿轮经热处理有较高的硬度和强度，与轴一同安装在可更换的轴套内运转。
Gear after heat treatment with high hardness and strength, and shaft installed in the replaceable shaft sleeve.
采用此方法可评价各种因素对局部焊后热处理的影响，并寻求最佳加热条件。
A series of different PWHT conditions are studied to find the critical heated width by using this method.
该方法可清楚地显示整个热处理过程中的应力变化并可找到临界的加热宽度。
This method clearly shows the whole history of stress relief during PWHT and a critical heated width can be obtained.
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