Cutting Temperatures in Milling Operations of Difficult-To-Cut Materials

IF 0.8 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of New Technology and Materials Pub Date : 2021-06-01 DOI:10.12816/0060300
Mohsen Soori, Mohammed Asmael
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引用次数: 16

Abstract

Due to high strength-to-weight ratio and corrosion resistance, difficult-to-cut materials are used in the aerospace, automotive and medical industries. High mechanical and thermal loading occur during machining operations of difficult-to-cut materials, reducing cutting tool life and machining process performance. So, analyzing the cutting temperatures in milling operations of difficult-to-cut materials can increase the efficiency in production process of the parts from the alloys. Application of the virtual machining system is developed in the study to predict the cutting temperature during machining operations of difficult-to-cut materials such as Inconel 718, Titanium alloy Ti6Al4V and Nickel-base superalloy gH4133B. The modified Johnson–Cook model is used to analyze the coupled effects of strain rate and deformation temperature on flow stress during milling operations of the alloys. The finite element simulation of the milling operations is implemented for the alloys in order to obtain the cutting temperature of the cutting tool and workpiece during chip formation process. To validate the study, the experimental results are compared to the finite element results obtained from the virtual machining system. As a result, the study can provide an effective device in terms of efficiency enhancement of machining operations by analyzing and decreasing the cutting temperature in milling operation of difficult-to-cut materials.
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难切削材料铣削操作中的切削温度
由于高强度重量比和耐腐蚀性,难以切割的材料用于航空航天,汽车和医疗行业。难切削材料在加工过程中会产生高的机械和热负荷,降低刀具寿命和加工工艺性能。因此,对难切削材料铣削过程中的切削温度进行分析,可以提高合金零件的生产效率。本研究开发了虚拟加工系统的应用,用于预测Inconel 718、钛合金Ti6Al4V、镍基高温合金gH4133B等难切削材料加工过程中的切削温度。采用改进的Johnson-Cook模型分析了合金铣削过程中应变速率和变形温度对流变应力的耦合影响。为了获得切屑成形过程中刀具和工件的切削温度,对合金的铣削加工过程进行了有限元模拟。为了验证研究结果,将实验结果与虚拟加工系统得到的有限元结果进行了比较。通过对难切削材料铣削加工过程中切削温度的分析和降低,为提高加工效率提供了有效手段。
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来源期刊
Journal of New Technology and Materials
Journal of New Technology and Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
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审稿时长
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