二氧化硅粉末对电火花加工工件表面精度影响研究
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摘要
随着电火花加工技术的不断发展,混粉电火花加工技术应运而生。本实验使用SEFN450精密电火花成形加工机床,对65Mn钢进行混粉电火花加工,通过实验得到最佳表面处理参数为:峰值电流4A,脉冲宽度3μs,脉冲间隔100μs,二氧化硅粉末浓度为25g/L。并利用正交试验法研究了二氧化硅浓度、脉冲宽度和脉冲峰值对工件表面精度的影响。
With the development of EDM technology,mixed-powder EDM technology has emerged as well.The paper introduces the experiment in which the SEFN 450 machine tools of precision EDM forming are used for the mixed-powder EDM of 65 mn steel.Through the experiment the optimum parameters of the surface treatment are obtained including the peak current of 4A,the pulse width of 3 mu s,the pulse interval of 100μs and the silica powder concentration of 25 g/L.The orthogonal test is then used to study the concentration of silica,the pulse width and the pulse peak impact on the precision of the workpiece surface.
With the development of EDM technology,mixed-powder EDM technology has emerged as well.The paper introduces the experiment in which the SEFN 450 machine tools of precision EDM forming are used for the mixed-powder EDM of 65 mn steel.Through the experiment the optimum parameters of the surface treatment are obtained including the peak current of 4A,the pulse width of 3 mu s,the pulse interval of 100μs and the silica powder concentration of 25 g/L.The orthogonal test is then used to study the concentration of silica,the pulse width and the pulse peak impact on the precision of the workpiece surface.
引文
[1]毛利尚武,斋藤长男,成宫久喜,河津俊秀.粉末混入加工液放电仕上加工[J].电加工学会,1 991,25(49).
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[4]Quan Y M,Liu Y H.Powder-suspension dielectric fluid for EDM[J].Journal of Materials Processing Technology,1995,52:44-54.
[5]Uno Y,Okada A,Cetin S.Surface modification of EDM surface with powder mixed fluid[J].in 2nd International Conference on Design and Production of Dies and Molds,2001.
[6]Yan B H,Lin Y C,Huang F Y,et.al.Surface modification of SKD 61 during EDM with metal powder in the dielectric[J].Materials Transactions,2001,42:2597-2604.
[7]高清,张勤河,张建华.混粉准干式电火花加工试验研究[D].山东:山东大学,2009.
[2]李会杰.混粉电火花镜面加工实验装置的研制及其工艺特性研究[D].上海:上海交通大学,2008.
[3]孟庆国,赵万生,李文卓.混粉电火花镜面加工表面性能研究[J].中国表面工程,2001,3:41-44.
[4]Quan Y M,Liu Y H.Powder-suspension dielectric fluid for EDM[J].Journal of Materials Processing Technology,1995,52:44-54.
[5]Uno Y,Okada A,Cetin S.Surface modification of EDM surface with powder mixed fluid[J].in 2nd International Conference on Design and Production of Dies and Molds,2001.
[6]Yan B H,Lin Y C,Huang F Y,et.al.Surface modification of SKD 61 during EDM with metal powder in the dielectric[J].Materials Transactions,2001,42:2597-2604.
[7]高清,张勤河,张建华.混粉准干式电火花加工试验研究[D].山东:山东大学,2009.