基于轴向旋转热管砂轮的钛合金成型磨削试验研究
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摘要
针对钛合金等难加工材料成型磨削时存在的磨削弧区温度高、型面温度分布不均的问题,设计制作了轴向旋转热管成型砂轮。通过开展轴向旋转热管砂轮的钛合金成型磨削试验,探究了热流密度、充液率及砂轮转速各因素下热管砂轮对磨削弧区温度的控制效果,从而得到最佳磨削参数及热管砂轮最佳充液率,并在此条件下进一步开展磨削试验。对磨削后的工件表面质量进行了分析,发现轴向旋转热管砂轮能明显降低弧区温度,减小型面温差,并避免工件烧伤现象,这表明其在强化弧区换热、控制磨削温度上具有较大优势。
Because high temperature and uneven temperature distribution appear on the profile surface of the grinding zone during grinding of the titanium alloys,the axial rotating heat pipe profile abrasive wheel is designed and manufactured. By profile grinding test for TC4,the effect of axial rotating heat pipe abrasive wheel on the temperature control of grinding zone under various factors such as heat flux,filling ratio and rotational speed is investigated and the optimal grinding process parameters and filling ratio are obtained. The profile grinding test is further done with optimal combination parameters and the ground surface quality of the workpiece is analyzed. It is found that the axial rotating heat pipe abrasive wheel can be used to decrease the temperature in the grinding zone and the temperature difference of profile surface and the burning phenomenon does not appear. It shows that is of great advantages in strengthening the heat transfer and controlling the grinding temperature.
Because high temperature and uneven temperature distribution appear on the profile surface of the grinding zone during grinding of the titanium alloys,the axial rotating heat pipe profile abrasive wheel is designed and manufactured. By profile grinding test for TC4,the effect of axial rotating heat pipe abrasive wheel on the temperature control of grinding zone under various factors such as heat flux,filling ratio and rotational speed is investigated and the optimal grinding process parameters and filling ratio are obtained. The profile grinding test is further done with optimal combination parameters and the ground surface quality of the workpiece is analyzed. It is found that the axial rotating heat pipe abrasive wheel can be used to decrease the temperature in the grinding zone and the temperature difference of profile surface and the burning phenomenon does not appear. It shows that is of great advantages in strengthening the heat transfer and controlling the grinding temperature.
引文
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[14]H F Shen,Y C Fu,J J Chen. A new modified model for simulation of a two-phase closed thermosyphon[D]. Nanjing:IHPC and 12th IHPS,2016.
[15]顾志斌.轴向旋转热管砂轮的传热性能研究[D].南京:南京航空航天大学,2017.
[16]C W Dai,W F Ding,J H Xu,et al. Influence of grain wear on material removal behavior during grinding nickel-based superalloy with a single diamond grain[J]. International Journal of Machine Tools&Manufacture,2017,113:49-58.
[2]R R Boyer,R D Briggs. The use of β titanium alloys in the aerospace industry[J]. Journal of Materials Engineering and Performance,2005,4(6):681-685.
[3]张喜燕,赵永庆,白晨光.钛合金及应用[M].北京:化学工业出版社,2005.
[4]宋兆泓.航空发动机典型故障分析[M].北京:北京航空航天大学出版社,1993.
[5]N S Xi,P D Zhong,H Q Huang,et al. Failure investigation of blade and disk in first stage compressor[J]. Engineering Failure Analysis,2000,7(6):385-392.
[6]高志坤,韩振宇,佟文伟,等.空心风扇叶片榫头裂纹原因分析[J].失效分析与预防,2012,7(2):114-117.
[7]C Andrew,T Howes,T Pearce. Creep feed grinding[M]. New York:Industrial Press,1985.
[8]陈明.难加工材料成形磨削烧伤研究[J].上海交通大学学报,1997(9):56-60.
[9]任敬心,康仁科.钛合金的磨削烧伤和磨削裂纹[J].制造技术与机床,2000,10:40-42.
[10]徐九华,张志伟,傅玉灿.镍基高温合金高效成型磨削的研究进展与展望[J].航空学报,2014,35(2):351-360.
[11]苏宏华,马可,傅玉灿,等.环形热管砂轮强化磨削弧区换热研究[J].南京航空航天大学学报,2012,44(2):233-239.
[12]梁星慧,傅玉灿,赫青山,等.热管砂轮干磨削温度场数值模拟[J].金刚石与磨料磨具工程,2012,32(2):1-5.
[13]陈琛.热管砂轮强化换热性能试验研究[D].南京:南京航空航天大学,2013.
[14]H F Shen,Y C Fu,J J Chen. A new modified model for simulation of a two-phase closed thermosyphon[D]. Nanjing:IHPC and 12th IHPS,2016.
[15]顾志斌.轴向旋转热管砂轮的传热性能研究[D].南京:南京航空航天大学,2017.
[16]C W Dai,W F Ding,J H Xu,et al. Influence of grain wear on material removal behavior during grinding nickel-based superalloy with a single diamond grain[J]. International Journal of Machine Tools&Manufacture,2017,113:49-58.