聚碳酸酯超低温冷却车削表面形貌试验研究

doi:10.3969/j.issn.1004-132X.2024.02.002

中国机械工程 ›› 2024, Vol. 35 ›› Issue (02): 201-207.DOI: 10.3969/j.issn.1004-132X.2024.02.002

聚碳酸酯超低温冷却车削表面形貌试验研究

包锐;刘阔;张杰;韩灵生;李建明;左月帅;刘海波;王永青

大连理工大学高性能精密制造全国重点实验室,大连,116024

出版日期:2024-02-25 发布日期:2024-03-22
通讯作者: 刘海波（通信作者），男，1983年生，教授、博士研究生导师。研究方向为超低温冷却加工技术、测量-加工一体化制造方法与装备、在机/在位精密测量技术与系统。发表论文80余篇。E-mail：hbliu@dlut.edu.cn。
作者简介:包锐，男，1999 年生，硕士研究生。研究方向为超低温冷却加工技术。发表论文1篇。E-mail：2879779864@qq.com。
基金资助:
国家自然科学基金（U20B2033）；中央高校基本科研业务费专项资金（DUT22LAB505）

Experimental Study of Surface Morphology of Polycarbonate Ultra-low Temperature Cooling Turning

BAO Rui;LIU Kuo;ZHANG Jie;HAN Lingsheng;LI Jianming;ZUO Yueshuai;LIU Haibo;WANG Yongqing

National Key Laboratory of High Performance Precision Manufacturing,Dalian University of Technology,Dalian,Liaoning,116024

Online:2024-02-25 Published:2024-03-22

摘要/Abstract

摘要： 针对聚碳酸酯加工时存在的耐热性差、变形、溶胀等问题，分别在干切削、水冷和超低温冷却条件下进行了聚碳酸酯的车削试验，并分析了材料加工表面的形貌，从分子链弛豫时间、银纹产生和脆韧性转变的角度解释了加工表面形貌的差异。研究发现，聚碳酸酯干切削表面产生大量粗大银纹，水冷切削表面产生大量细密银纹，超低温冷却切削表面银纹较少，因此超低温冷却对提高聚碳酸酯的加工质量具有积极作用。

关键词: 聚碳酸酯, 超低温冷却切削, 银纹, 加工表面形貌

Abstract: Aiming at the problems of poor heat resistance, deformation, and swelling, a turning test of polycarbonate was carried out under dry cutting, water cooling, ultra-low temperature cooling, and the shape of the surface was analyzed. The morphological differences of machined surfaces were explained from the perspective of relaxation time of molecular chains, crazing generation, and brittle-toughness transition. It is found that, on polycarbonate surfaces, dry cutting produces a large number of strong crazing, water-cooled cutting produced a large number of fine crazing, while the ultra-low temperature cooling cutting produces less crazing. Therefore, ultra-low temperature cooling has a positive effect on improving the processing quality of polycarbonates.

Key words: polycarbonate, ultra-low temperature cooling cutting, crazing, machining surface morphology

中图分类号:

TH161

包锐, 刘阔, 张杰, 韩灵生, 李建明, 左月帅, 刘海波, 王永青. 聚碳酸酯超低温冷却车削表面形貌试验研究[J]. 中国机械工程, 2024, 35(02): 201-207.

BAO Rui, LIU Kuo, ZHANG Jie, HAN Lingsheng, LI Jianming, ZUO Yueshuai, LIU Haibo, WANG Yongqing. Experimental Study of Surface Morphology of Polycarbonate Ultra-low Temperature Cooling Turning[J]. China Mechanical Engineering, 2024, 35(02): 201-207.

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聚碳酸酯超低温冷却车削表面形貌试验研究

Experimental Study of Surface Morphology of Polycarbonate Ultra-low Temperature Cooling Turning

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