This article proves that rolling operation can largely enhance fatigue strength through the research on the cold rolling operation of thread root of the drilling tool joint.
通过石油井下钻具接头螺纹冷滚压工艺的研究可以证明冷滚压可大大地提高接头的疲劳强度。
This article proves that rolling operation can largely enhance fatigue strength through the research on the cold rolling operation of thread root of the drilling tool joint.
通过石油井下钻具接头螺纹冷滚压工艺的研究可以证明冷滚压可大大地提高接头的疲劳强度。
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