涂层损耗对硬质合金刀具磨损率变化影响的研究
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摘要
为研究涂层刀具损耗对刀具磨损率变化的影响,分别利用Ti N和Ti Al N涂层金刚石刀具对碳素钢AISI 1045、中碳钢AISI 4135、球墨铸铁以及镍基合金718进行切削实验。首先建立切削过程中刀具磨损率变化和涂层损耗之间的关系;然后,利用扫描电镜(SEM)和能量色散谱(EDS)将磨损率变化与涂层损耗之间的关系联系起来;实验结果表明,刀具涂层能够一定程度上抑制磨损率的变化,随着涂层磨损至完全脱落后,刀具磨损率急剧增大;另一方面,也为合理选择切削速度提供了理论基础。
In order to research the effect of coating layer loss on the wear rate change,the TiN-and TiAlN-coated carbide tools were used to machine the carbon steel AISI 1045,AISI 4135,ductile cast iron and Inconel 718,respectively. Firstly,the relationship between tool wear rate change and coating layer loss during cutting process was verified. Then,the relationship between wear rate change and coating layer loss was investigated by scanning electron microscopy( SEM) and energy dispersive spectroscopy( EDS).Finally,the experimental results show that the coating layer can inhibit the change of wear rate to a certain extent,but the wear rate of tool increases sharply when the coating is completely worn off. On the other hand,it provides a theoretical basis for reasonable selection of cutting speed.
In order to research the effect of coating layer loss on the wear rate change,the TiN-and TiAlN-coated carbide tools were used to machine the carbon steel AISI 1045,AISI 4135,ductile cast iron and Inconel 718,respectively. Firstly,the relationship between tool wear rate change and coating layer loss during cutting process was verified. Then,the relationship between wear rate change and coating layer loss was investigated by scanning electron microscopy( SEM) and energy dispersive spectroscopy( EDS).Finally,the experimental results show that the coating layer can inhibit the change of wear rate to a certain extent,but the wear rate of tool increases sharply when the coating is completely worn off. On the other hand,it provides a theoretical basis for reasonable selection of cutting speed.
引文
[1]刘兴龙,王兵,熊鹰,等.等离子体硼氮共渗预处理对硬质合金刀具表面金刚石涂层结合强度的影响[J].稀有金属,2016,40(5):460-466.
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[5] Suresh R,Basavarajappa S,Gaitonde V N. Experimental studies on the performance of multilayer coated carbide tool in hard turning of high strength low alloy steel[J]. Journal of Materials Research,2015,30(20):3056-3064.
[6]Itakura K,Kuroda M,Omokawa H,et al. Wear mechanism of coated cemented carbide tool in cutting of inconel 718 super-heat-resisting alloy[J]. International Journal of the Japan Society for Precision Engineering,1999,33(4):326-332.
[7]Bhatt A,Attia H,Vargas R,et al. Wear mechanisms of WC coated and uncoated tools in finish turning of Inconel718[J]. Tribology International,2010,43(5):1113-1121.
[8]叶衔真,王大镇,刘菊东,等.铣削碳纤维复合材料刀具磨损试验研究[J].机电技术,2014(3):75-77.
[9]Khrais S K,Lin Y J. Wear mechanisms and tool performance of Ti Al N PVD coated inserts during machining of AISI4140 steel[J]. Wear,2007,262(1):64-69.
[10]韩文强,何辉波,李华英,等. Ti N涂层刀具对20CrMo钢的干切削性能的影响及磨损机理[J].中南大学学报:自然科学版,2014,45(1):64-70.
[11]Martinez I,Tanaka R,Yamane Y,et al. Wear mechanism of coated tools in the turning of ductile cast iron having wide range of tensile strength[J]. Precision Engineering,2017,47:46-53.
[12]Ezugwu E O,J Bonney,Y Yamane. An overview of the machinability of aeroengine alloys[J]. Journal of Materials Processing Technology,2003,134(2):233-253.
[2]韩振威,林有希. Ti Al N涂层刀具研究新进展[J].组合机床与自动化加工技术,2012(6):87-91.
[3]Suresh R,Basavarajappa S,Gaitonde V N,et al. State-of-theart research in machinability of hardened steels[J]. Proceedings of the Institution of Mechanical Engineers,Part B:Journal of Engineering Manufacture,2013,227(2):191-209.
[4]徐银超,陈康华,王社权,等.金刚石涂层硬质合金刀具涂层的研究和应用进展[J].硬质合金,2015(2):136-146.
[5] Suresh R,Basavarajappa S,Gaitonde V N. Experimental studies on the performance of multilayer coated carbide tool in hard turning of high strength low alloy steel[J]. Journal of Materials Research,2015,30(20):3056-3064.
[6]Itakura K,Kuroda M,Omokawa H,et al. Wear mechanism of coated cemented carbide tool in cutting of inconel 718 super-heat-resisting alloy[J]. International Journal of the Japan Society for Precision Engineering,1999,33(4):326-332.
[7]Bhatt A,Attia H,Vargas R,et al. Wear mechanisms of WC coated and uncoated tools in finish turning of Inconel718[J]. Tribology International,2010,43(5):1113-1121.
[8]叶衔真,王大镇,刘菊东,等.铣削碳纤维复合材料刀具磨损试验研究[J].机电技术,2014(3):75-77.
[9]Khrais S K,Lin Y J. Wear mechanisms and tool performance of Ti Al N PVD coated inserts during machining of AISI4140 steel[J]. Wear,2007,262(1):64-69.
[10]韩文强,何辉波,李华英,等. Ti N涂层刀具对20CrMo钢的干切削性能的影响及磨损机理[J].中南大学学报:自然科学版,2014,45(1):64-70.
[11]Martinez I,Tanaka R,Yamane Y,et al. Wear mechanism of coated tools in the turning of ductile cast iron having wide range of tensile strength[J]. Precision Engineering,2017,47:46-53.
[12]Ezugwu E O,J Bonney,Y Yamane. An overview of the machinability of aeroengine alloys[J]. Journal of Materials Processing Technology,2003,134(2):233-253.