系统地研究了高温蜘蛛网龟裂效应革涂饰方法。

The method of finishing of the cobweb cracked effect leather in the condition high temperature was studied.

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高温燃气冲刷及冲击负荷的作用，加速了该气门的失效，其过程是由沿晶界龟裂，然后以此为裂源而引起的疲劳扩展。

And the brush of high temperature gas and impact load speeded failure. The cracks on valve sur-face are primarily emerged due to inter crystalline chap, then fatigue pr...

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