液氮超低温冷却车削钛合金的综合实验.pdf

ISSN 1002-4956 实 验 技 术 与 管 理 第 38 卷 第 8 期 2021 年 8 月 CN11-2034/T Experimental Technology and Management Vol.38 No.8 Aug. 2021 DOI: 10.16791/j.cnki.sjg.2021.08.013 液氮超低温冷却车削钛合金的综合实验 戴明华，刘 阔，张红哲，王永青，刘海波，车 畅 （大连理工大学机械工程学院，辽宁 大连 116024 ） 摘 要：该文将学科前沿的液氮超低温加工技术引入本科实验教学，设计综合机械加工实验，强化学生对机 械加工专业知识的理解，锻炼其动手能力和使用仪器设备的综合技能。以典型航空航天用钛合金材料为对象， 开展液氮超低温切削和常规干切削、乳化液冷却切削的对比实验，将切削加工涉及的切削温度、切削力、刀 具磨损和加工质量等内容纳入实验教学，并对实验数据和结果进行分析讨论。清洁切削技术的引入，能有效 激发学生对传统切削加工工艺的探索兴趣，锻炼综合实践能力，引入绿色制造理念，拓宽认知视野，培养学 生的科研思维和探索精神。 关键词：超低温加工；车削；钛合金；实验教学 中图分类号：TG 501 ；G642 文献标识码：A 文章编号：1002-4956(2021)08-0055-06 Comprehensive experiment of liquid nitrogen cryogenic cooling turning titanium alloy DAI Minghua, LIU Kuo, ZHANG Hongzhe, WANG Yongqing, LIU Haibo, CHE Chang (College of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China) Abstract: This paper introduces the advanced liquid nitrogen ultra-low temperature processing technology into undergraduate experimental teaching, designs comprehensive mechanical processing experiments, strengthens students understanding of the professional knowledge of machining and exercises their hands-on ability and comprehensive skills of using instruments and equipment. By taking titanium alloy materials for aerospace as the object, the comparative experiments of liquid nitrogen ultra-low temperature cutting and conventional dry cutting and emulsion cool