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The Research on the Cutting Test of Ni - Based Superalloy GH4169 and Optimization of Process Parameters under High Pressure Cooling
Integrated Ferroelectrics ( IF 0.7 ) Pub Date : 2021-08-15 , DOI: 10.1080/10584587.2021.1911330
Lubin Li 1 , Mingyang Wu 2 , Li Liu 3
Affiliation  

Abstract

Superalloy is one of the most important material in aerospace, shipbuilding and nuclear power industries. However, due to its excellent structure, its machinability is very poor. High pressure cooling is a new cooling technology, which provides technical support for cutting superalloy and other difficult-to-cut materials. Therefore, in view of the problem of poor machinability of superalloys, a cutting test on nickel-based superalloy GH4169 is conducted based on the high pressure cooling cutting technology in this paper. It is mainly to study the effects of different cutting parameters and coolant pressure on surface roughness and tool life. The results show that the feed has the greatest influence on surface roughness, followed by cutting depth and coolant pressure, and the least influence is cutting speed. Among the influences on tool life, cutting speed has the greatest influence on tool life, followed by feed and coolant pressure, and the least influence is cutting depth. Based on the adaptive genetic method, the prediction models of machined surface roughness and tool life of cutting GH4169 under high pressure cooling are established respectively, and the process optimization analysis is carried out with the goal of tool life, machined surface roughness and cutting efficiency. The optimal parameter combination is obtained as vc=163.75 m/min, f = 0.14 mm/r, ap=0.52 mm, P = 50.46 bar. The above research results can provide certain technical support for improving the machinability of superalloys.



中文翻译:

镍基高温合金GH4169的切削试验及高压冷却工艺参数优化研究

摘要

高温合金是航空航天、造船和核电工业中最重要的材料之一。但由于其结构优良,其切削加工性很差。高压冷却是一种新型冷却技术,为切削高温合金等难切削材料提供技术支持。因此,针对高温合金切削加工性差的问题,本文基于高压冷却切削技术对镍基高温合金GH4169进行切削试验。主要是研究不同切削参数和冷却液压力对表面粗糙度和刀具寿命的影响。结果表明,进给量对表面粗糙度的影响最大,其次是切削深度和冷却液压力,对切削速度的影响最小。在对刀具寿命的影响中,切削速度对刀具寿命的影响最大,其次是进给和冷却液压力,影响最小的是切削深度。基于自适应遗传方法,分别建立了GH4169高压冷却切削加工表面粗糙度和刀具寿命预测模型,并以刀具寿命、加工表面粗糙度和切削效率为目标进行了工艺优化分析。最优参数组合为 并以刀具寿命、加工表面粗糙度和切削效率为目标进行工艺优化分析。最优参数组合为 并以刀具寿命、加工表面粗糙度和切削效率为目标进行工艺优化分析。最优参数组合为v c =163.75 m/min, f  = 0.14 mm/r, a p =0.52 mm, P  = 50.46 bar。上述研究成果可为提高高温合金的切削加工性提供一定的技术支持。

更新日期:2021-08-16
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