摘要：使用常规的方法对大口径薄壁管件进行精密加工时容易出现尺寸超差的现象。为有效解决该问题，设计了一种包含内部支撑机构和定位机构的管件端部加工稳定装置，并使用该装置进行2根管件的加工试制。与常规方法加工2根管件的加工参数进行对比发现，使用该稳定装置可有效提高大口径薄壁管件的加工尺寸精度，为大口径薄壁管件的加工工艺优化和成材率的提升提供了参考。

关键词：大口径薄壁管件；端部加工；稳定装置

中图分类号：TG250；TH162文献标志码：A

Design of Stabilizing Device for Large Diameter Thinwall Pipe

Ends Precision Processing

Bai He，Chen Tao，Zhou Youyuan，Wang Hexin，Han Yulin，He Shilei

Abstract:The common problems that tolerance exceeded the control range of pipe ends precision finishing by using conventional methods often arise for the large diameter thinwall steel pipe.A new kind of stabilizing device made up of internal support mechanism and positioning mechanism is designed to solve the problem and improve the processing precision.By contrast of the two processes，the finish size precision of two pipes trialproduced by using stabilizing device is better than that processed without using stabilizing device.The design of the device provides helpful reference on the optimization of pipe ends processing technology and improvement of finished product rate for the large diameter thinwall steel pipe.

Keywords:large diameter thinwall steel pipe；end′s processing；stabilizing device