taper pipe thread

Software I DEAS and MARC were used to calculate the thread face contact stress during the make up process, and to analyze the effect of taper mutation of pipe ( pin thread) and coupling ( box thread) on the thread face contact stress quantitatively.

利用I－DEAS和MARC软件计算了拧接过程螺纹齿面的接触应力，定量分析了管体（公螺纹）和管接箍（母螺纹）的锥度变化对齿面接触应力的影响。

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But oil well pipe joint is one typical thin-wall barrel workpiece which causes the difficulty of inside taper thread processing.

但油井管接头是典型的薄壁筒状工件，它的内锥螺纹加工有较大的难度。

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