Transactions of Materials and Heat Treatment

Title：Influences of slotting methods on low-stress precision cutting

Authors： Cui Minchao Zhao Shengdun Sun Hongxing Chen Chao Dong Yuanzhe

Unit： Xi′an Jiaotong University Zhengzhou Research Institute of Mechanical Engineering

KeyWords： slotting methods low stress precision cutting milling turning laser machining V-shaped grooves

ClassificationCode：TG316

year,vol(issue):pagenumber：2017,42(10):62-68

Abstract：

The principle and equipment structure of low stress precision cutting process for rods and tubes were introduced firstly, and the same depth V-shaped grooves were preliminarily produced on 304 stainless steel thick-walled seamless pipe by turning, milling and laser manufacturing respectively in order to analyze influences of the V-groove prefabricated by different processing methods on the low-stress precision cutting process. Then, the cutting tests were conducted by low-stress cutting devices, and the cutting time and cross section quality were obtained for different slotting methods. The results show that for cuttingg efficiency, milling process>turning process>laser process, while for cross section quality, laser process>turning process>milling process. Furthermore, the bottom of three different V-shaped grooves were observed by Scanning Electron Microscope (SEM) and the bottom surface morphologies of V-shaped grooves prefabricated by different slotting methods were obtained. Furthermore the influences of surface quality and heat-effect zone of V-shaped grooves on the generating process of initial cracks in the low-stress cutting process are revealed to analyze the generating reason of tearing area in the cross section respectively. Thus, the experimental results have reference value for selecting of slotting method for low-stress precision cutting.

Funds：

国家自然科学基金资助项目（51335009）

作者简介：崔敏超（1991-），男，博士研究生，E-mail：cuiminchao@163.com；通讯作者：赵升吨（1962-），男，博士，教授，E-mail: sdzhao@mail.xjtu.edu.cn

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