ABSTRACT In today’s world, micro-manufacturing techniques are getting developed day by day to minimize the effort and sophistication to provide desired products. Micro forming is one of the micro-manufacturing techniques. Present research article reports on the bending of micron-thin sheets using an electric discharge machining process. The spark discharges were used to bend thin stainless steel work materials. Bend angle (BA) was analyzed by varying the duty factor (DF), gap voltage (GV), and peak current (PC). In the present work of research, response surface methodology (RSM) was implemented for the design of experiments. BA was measured using an optical microscope. The ANOVA outcomes showed that the BA was affected by all the input parameters at a 95% confidence level. Maximum value obtained for the BA was 23.76° at duty factor 70, voltage 40, and peak current 10 A. In contrast, the minimum was 4.62° at duty factor 30, gap voltage 40 and peak current 6 A. The bending surface was analyzed by Energy-Dispersive X-Ray Spectroscopy (EDS) and Field Emission Scanning Electron Microscope (FESEM) images. The EDS results confirmed the deposition of the tool material over the sample; also, FESEM images showed micro-cracks, holes at machined surface.

中文翻译：

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使用火花放电弯曲微薄板的研究

摘要 在当今世界，微制造技术日益发展，以最大限度地减少提供所需产品的努力和复杂性。微成形是微制造技术之一。目前的研究文章报告了使用放电加工工艺弯曲微米薄片。火花放电用于弯曲薄不锈钢工件材料。通过改变占空比 (DF)、间隙电压 (GV) 和峰值电流 (PC) 来分析弯曲角 (BA)。在目前的研究工作中，响应面法 (RSM) 用于实验设计。BA 使用光学显微镜测量。方差分析结果显示 BA 在 95% 的置信水平下受所有输入参数的影响。BA 的最大值为 23.76°，占空比为 70，电压为 40，和峰值电流 10 A。相比之下，占空比为 30、间隙电压为 40 和峰值电流为 6 A 时的最小值为 4.62°。通过能量色散 X 射线光谱 (EDS) 和场发射扫描电子显微镜分析弯曲表面(FESEM) 图像。EDS 结果证实了工具材料在样品上的沉积；此外，FESEM 图像显示加工表面有微裂纹、孔洞。