超高强度钢AerMet100磨削烧伤研究

发布时间：2018-11-15 20:44

【摘要】：针对超高强度钢AerMet100磨削烧伤问题,基于磨削热力耦合及烧伤测试方法的结合获得磨削烧伤机理和定量化分析方法。在正交磨削工艺参数条件下对磨削温度和磨削力测试分析,建立了磨削力和磨削温度关于磨削工艺参数的回归经验模型。在此的基础上,分别采用酸洗法、显微硬度法、微观组织法研究了的磨削烧伤机理和测试方法,同时采用巴氏杂讯法获得了磨削烧伤关于磨削工艺参数的回归经验模型,分析了磨削工艺参数对磨削烧伤的影响规律。研究结果表明:磨削烧伤是磨削热力耦合作用的结果,采用巴克杂讯法检查烧伤具有无损测试、量化分析的优点;磨削力、磨削温度和磨削烧伤BN值均对磨削深度的变化最敏感,磨削烧伤BN值随着磨削深度、砂轮速度和工件速度的增大而增大。其为超高强度钢AerMet100构件的磨削烧伤测试和控制提供数据依据和理论指导。
[Abstract]:Aiming at the problem of AerMet100 grinding burn of ultra-high strength steel, the grinding burn mechanism and quantitative analysis method are obtained based on the combination of grinding thermal coupling and burn testing method. Under the condition of orthogonal grinding process parameters, the regression empirical model of grinding force and grinding temperature on grinding process parameters is established. On this basis, the grinding burn mechanism and testing method were studied by acid pickling method, microhardness method and micro organic law, respectively. At the same time, the regression empirical model of grinding burn parameters was obtained by using Pasteur noise method. The influence of grinding process parameters on grinding burn is analyzed. The results show that grinding burn is the result of thermal coupling of grinding, and Barker noise method has the advantages of nondestructive testing and quantitative analysis. Grinding force, grinding temperature and BN value of grinding burn are most sensitive to the change of grinding depth. The BN value of grinding burn increases with the increase of grinding depth, grinding wheel speed and workpiece speed. It provides data basis and theoretical guidance for grinding burn test and control of ultra high strength steel AerMet100 members.
【作者单位】：西北工业大学现代设计与集成制造技术教育部重点实验室;
【基金】：国家自然科学基金资助项目(50975237,51005184)
【分类号】：TG580.6

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