ABSTRACT

Abrasive water jet (AWJ), which is a non-traditional machining method, is more widely used today. Various materials such as metals, ceramics, polymers, and composites can be easily machined with AWJ. In this study, cutting of St37 steel plates in stacked form with AWJ was investigated. The experiments were carried out according to the general full factorial design. Experimental parameters were inter-stack distance, traverse speed, and abrasive mass flow rate also each of these parameters was chosen at three levels. Surface roughness and kerf widths were examined to determine the cutting performance. Analysis of variance (ANOVA) of all outputs was provided and thus the effects of experimental parameters and their levels on cutting performance were found. The most effective parameters for surface roughness and kerf width in almost all conditions were abrasive mass flow rate and inter-stack distance, respectively. In addition, a concept for multi-simultaneous cutting was developed with mathematical differences of surface roughness and kerf taper angle. Thus, optimum levels of experimental parameters were found for minimum mathematical differences.

摘要

磨料水射流 (AWJ) 是一种非传统的加工方法，如今得到了更广泛的应用。AWJ 可以轻松加工各种材料，例如金属、陶瓷、聚合物和复合材料。在这项研究中，研究了使用 AWJ 切割堆叠形式的 St37 钢板。实验按照一般全因子设计进行。实验参数是堆栈间距离、横移速度和磨料质量流量，这些参数中的每一个都在三个级别上进行选择。检查表面粗糙度和切口宽度以确定切割性能。提供了所有输出的方差分析 (ANOVA)，从而发现了实验参数及其水平对切割性能的影响。在几乎所有条件下，表面粗糙度和切口宽度的最有效参数分别是磨料质量流量和堆叠间距。此外，基于表面粗糙度和切口锥角的数学差异，开发了多同时切割的概念。因此，找到了最小数学差异的实验参数的最佳水平。