Study on the effect of standoff distance on processing performance of alumina ceramics in two modes of abrasive waterjet turning patterns
Abrasive waterjet (AWJ) turning is an emerging technology,which plays an important role in machining cylindrical parts with the distinct advantages of negligible thermal effects and extremely low cutting force.This paper presents an experimental study of abrasive waterjet turning (AWJT) of Al2O3 ceramics.The machining process and performance in terms of the depth of penetration (DOP),surface roughness (Ra) and actual impact angle (β) are discussed to understand the effect of standoff distance (SOD) on the processing performance at two different turning modes.Based on the results of these investigations,there is a significant change of DOP and Ra at different SOD in radial mode turning and the optimal SOD of gaining maximum DOP and the minimum Ra is about 5.5mm.However,the DOP is nearly independent on the SOD in offset mode turning.Smaller Ra and DOP can be obtained in offset mode.Furthermore,the results indicate that the roundness error of cylinder parts is probably improved with the proper SOD interval in radial mode turning and it is suitable for machining cylinder part with considerably different radial size.The offset mode turning as the next operation after radial mode turning is recommended to process workpiece with excellent roundness.In this way,by understanding the effect of SOD on processing alumina ceramics,the paper establishes a good basis for developing strategies for optimizing processing parameters in order to generate the desired part geometry and achieve better surface quality.
Depth of penetration Standoff distance AWJ turning Surface roughness
Dun Liu Chuanzhen Huang Jun Wang Hongtao Zhu Peng Yao ZengWen Liu
Center for Advanced Jet Engineering Technologies(Ca JET),Key Laboratory of High-efficiency and Clean Mechanical Manufacture(Ministry of Education),School of Mechanical Engineering,Shandong University,Jinan,China,250061
国际会议
杭州
英文
21-26
2013-09-23（万方平台首次上网日期，不代表论文的发表时间）