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兵工学报 ›› 2018, Vol. 39 ›› Issue (8): 1601-1606.doi: 10.3969/j.issn.1000-1093.2018.08.017

• 论文 • 上一篇    下一篇

基于1∶80缩比实验机的离心熔铸模拟实验研究

徐鑫莉1,2, 张心明1, 蔡鹏3, 于阳4, 赵立新5   

  1. (1.长春理工大学 机电工程学院, 吉林 长春 130022;2.长春工程学院,吉林 长春 130012;3.中国第一汽车集团有限公司, 吉林 长春 130011;4.中国科学院 长春光学精密机械与物理研究所, 吉林 长春 130033;5.吉林省留学回国人员和专家服务中心, 吉林 长春 130022)
  • 收稿日期:2017-12-12 修回日期:2017-12-12 上线日期:2018-09-21
  • 通讯作者: 张心明(1967—),男,研究员,博士生导师 E-mail:zxm@cust.edu.cn
  • 作者简介:徐鑫莉(1987—),女,讲师。E-mail:455855261@qq.com
  • 基金资助:
    吉林省自然科学基金项目(20150101024JC)

Simulation Experiment of Centrifugal Casting Based on 1∶80 Scale Reduction Experimental Machine

XU Xin-li1,2, ZHANG Xin-ming1, CAI Peng3, YU Yang4, ZHAO Li-xin5   

  1. (1.College of Mechanical and Electrical Engineering, Changchun University of Science and Technology, Changchun 130022,Jilin,China;2.Changchun Institute of Technology,Changchun 130012,Jilin,China;3.China First Automobile Works Group Co., Ltd., Changchun 130011,Jilin,China;4.Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,Jilin,China;5.Returned Overseas Personnels and Expert Service Center Jilin Province, Changchun 130022,Jilin,China)
  • Received:2017-12-12 Revised:2017-12-12 Online:2018-09-21

摘要: 在实验室环境下进行非球面镜离心熔铸实验,研究大口径非球面镜的离心熔铸技术,并验证研究方法的可行性。通过对大口径非球面镜离心熔铸工艺的温度场相似准则和缩比模型参数匹配方法的研究,设计1∶80离心熔铸环境相似缩比实验机,进行物理模拟实验。测量了缩比实验的温度场、应力场以及最终的镜胚面形偏差。实验结果与仿真结果对比显示,温度场测量结果与仿真结果的相对误差在1.0%~1.4%之间。非球面镜在转变温度附近采取适当保温工艺后,最大压应力降为0.98 MPa. 通过轮廓仪检测制得的非球面镜面形偏差为-83.823 3 μm,与仿真结果相符。采用仿真联合缩比实验的方法对离心熔铸工艺中的不可观测量进行研究,为离心熔铸工艺提供了理论参考依据和实验指导。

关键词: 非球面镜, 离心熔铸, 相似性准则, 缩比模型, 温度场

Abstract: The centrifugal casting technology of large aperture aspherical mirror is studied for the centrifugal casting experiment of aspherical mirror in the laboratory environment, and the feasibility of the method is verified. A 1∶80 scale experimental machine was designed by studying the similarity criterion of temperature field and the matching method of scaled model parameters in the centrifugal casting process of large aperture aspherical mirror, and the physical simulation experiment was carried out. The temperature field, stress field and final surface shape deviation of mirror were measured. The experimental results are compared with the simulated results. The relative error between the measured and simulated temperatures of temperature field is between 1.0% and 1.4%. The maximum compressive stress is reduced to 0.98 MPa when the aspherical mirror is properly insulated near tg. The measured surface shape deviation of aspherical mirror is -83.823 3 μm, which is consistent with the simulated result. The non-observable parts in the process of centrifugal casting can be studied through simulation and experiment. Key

Key words: asphericalmirror, centrifugalcasting, similaritycriterion, scaledmodel, temperaturefield

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