Abstract Unconventional wire electrical discharge machining technology is an indispensable part of the production of many industrial devices. Material separation takes place at very high local temperatures, and therefore, some undesirable surface and sub-surface defects are formed. Not only the occurrence of defects but also the quality of the machined surface is very important for the end customer, so it is necessary to monitor it carefully. For this reason, a 33-round planned experiment was carried out for the study of the impact of the machine parameters setup on the topography and morphology of the steel Creusabro 4800. (This material has not yet been the subject of any similar publication.) Metallographic preparations of all samples that allowed the study of subsurface defects using light and electron microscopy were produced. In order to investigate changes in the chemical composition of the surface and subsurface layers of the effects of WEDM machining, a complex chemical composition analysis was performed. A significant effect of the machine parameters setup on the occurrence of subsurface defects was demonstrated and the presence of burned cavities could be completely eliminated with machine parameters setup: gap voltage = 60 V, pulse on time = 8 μs, pulse off time = 40 μs, wire speed = 12 m min−1 and discharge current = 25 A.

中文翻译：

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线切割加工后耐磨 Creusabro 钢次表面缺陷发生的分析，包括形貌和表面形貌的研究

摘要 非常规线材电火花加工技术是许多工业设备生产中不可或缺的一部分。材料分离发生在非常高的局部温度下，因此会形成一些不希望有的表面和亚表面缺陷。不仅缺陷的发生，而且加工表面的质量对最终客户来说都非常重要，因此必须对其进行仔细监控。为此，进行了 33 轮计划实验，以研究机器参数设置对 Creusabro 4800 钢的形貌和形态的影响。（该材料尚未成为任何类似出版物的主题。）制作了所有样品的金相准备，允许使用光学和电子显微镜研究表面下的缺陷。为了研究表面和次表面层化学成分的变化对 WEDM 加工的影响，进行了复杂的化学成分分析。证明了机器参数设置对次表面缺陷发生的显着影响，并且可以通过机器参数设置完全消除烧蚀空腔的存在：间隙电压 = 60 V，脉冲开启时间 = 8 μs，脉冲关闭时间 = 40 μs , 线速 = 12 m min−1 放电电流 = 25 A。