Impact of nose radius and machining parameters on surface roughness, tool wear and tool life during turning of AA7075/SiC composites for green manufacturing

IF 4.03
Rajesh Kumar Bhushan
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引用次数: 17

Abstract

Green manufacturing demands least wastage. Minimum chip formation reduces adverse effect on environment. Nose radius has a major role in reducing development of chips. Selection of proper nose radius and machining parameters will reduce amount of chip, therefore protect the environment. In finish turning of Al alloy-SiC, nose radius wear mainly affect the surface feature of the final product. It is owing to the direct contact between the area of tool nose and the SiC particles during turning. This paper is focused on influence of tool nose radius and machining parameters on surface quality of AA7075/15?wt.% SiC (20 - 40?μm) composites and tool life of tungsten carbide inserts while dry turning. Response surface method (RSM) was utilized to find the roughness and tool life under numerous turning situations. Considering the single objective optimization of turning parameters, minimum roughness of 2.088?μm, was achieved at nose radius of 1.2?mm and maximum tool life of 6.72?min, was obtained at nose radius of 0.4?mm. Multi objective optimization by desirability analysis for minimum roughness and the maximum life of tool has shown that suitable value of nose radius is 0.4?mm. Multi objective optimization of both roughness of surface and life of tool results in 1.81% increase in surface roughness and 10.11% decrease in tool life. Abrasion was mainly found to be responsible for wear of tungsten carbide inserts, while turning of AA7075/15?wt.% SiC (20 - 40?μm) composites. Novelty of this research work is that so far no one has investigated impact of nose radius and machining parameters on surface roughness, tool wear and tool life during turning of AA7075/15?wt.% SiC composites. Outcome of this research work will be useful for vehicle, aeroplane, space and ship industry.

Abstract Image

绿色制造AA7075/SiC复合材料车削过程中刀尖半径和加工参数对表面粗糙度、刀具磨损和刀具寿命的影响
绿色制造要求最少的浪费。最小的芯片形成减少对环境的不利影响。鼻子半径在减少芯片的发展中起着重要作用。选择合适的机头半径和加工参数可以减少切屑量,从而保护环境。在铝合金-碳化硅精车削加工中,机头半径磨损主要影响最终产品的表面特征。这是由于车削过程中刀尖区域与碳化硅颗粒直接接触所致。研究了刀尖半径和加工参数对aa7075 / 152wt表面质量的影响。% SiC (20 - 40 μm)复合材料与干车削时碳化钨刀片的刀具寿命。利用响应面法(RSM)求出多种车削工况下的粗糙度和刀具寿命。考虑单目标优化车削参数,最小粗糙度为2.088?在鼻口半径为1.2?Mm,最大刀具寿命6.72?鼻部半径为0.4 mm处最小。通过对刀具最小粗糙度和最大寿命的理想性分析,进行多目标优化,得出刀尖半径的适宜值为0.4 mm。对表面粗糙度和刀具寿命进行多目标优化,表面粗糙度提高1.81%,刀具寿命降低10.11%。在车削AA7075/15?wt时,磨损是造成碳化钨刀片磨损的主要原因。% SiC (20 - 40 μm)复合材料。本研究工作的新颖之处在于,到目前为止,还没有人研究过机头半径和加工参数对AA7075/15?wt车削过程中表面粗糙度、刀具磨损和刀具寿命的影响。% SiC复合材料。研究成果对汽车、飞机、航天、船舶等行业具有一定的参考价值。
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