表面技术Issue(6)：104-108,5.DOI:10.16490/j.cnki.issn.1001-3660.2015.06.020
304不锈钢电火花线切割加工表面性能研究
Research on 304 Stainless Steel Surface Properties by Wire Electrical Discharge Machining
摘要
Abstract
ABSTRACT:Objective To investigate the influences of W-EDM process on the surface quality of materials,analyze the mechani-cal properties of the machined surface. Methods The wire electrical discharge machining was used to conduct the surface cutting test of 304 stainless steel. The profilometer, scanning electron microscope ( SEM) , electron microscope and nanoindentation were used to examine the variation pattern of surface roughness and surface micro-morphology and obtain the micro and nano-hardness curve of electric discharge machining ( EDM) . The orthogonal experiment was designed to obtain the optimal parameters. Results The machining pulse width length and the peak current of austenitic stainless steel processing had a significant effect on the forma-tion mechanism of surface morphology. The surface roughness was greatly influenced by electrical parameters. The surface and the subsurface tissues were mainly composed of the layer of plastic deformation and the layers of tempered multiphase. Changes were great in the thickness and the nano-hardness due to the influence of the electrical parameters. Conclusion Electrical parameters by their effects on the surface quality in order were pulse width, peak current, and discharge interval. In order to obtain the optimum machining surface layer, priority should be given to select pulse width 16 μs, discharge interval 96 μs, peak current of 1. 5 A as the processing parameters. Single pulse energy exhibited a nearly linear association with thickness and nano-hardness of the pro-cessed layer.关键词
电火花线切割/表面质量/304不锈钢Key words
wire cut electrical discharge machining ( WEDM)/surface quality/SUS304 stainless steel分类
矿业与冶金引用本文复制引用
李晓舟,孙宇博,许金凯,黄飞,姜倩..304不锈钢电火花线切割加工表面性能研究[J].表面技术,2015,(6):104-108,5.基金项目
国家自然科学基金资助项目(51305043) Fund：Supported by the National Natural Science Foundation of China (51305043) （51305043）
