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磨料水射流切割表面微划痕分布模式的实验研究

Experimental investigation of the distribution patterns of micro-scratches in abrasive waterjet cutting surface.

作者信息

Yang Tao, Zhao Wei, Zhu Xijing, Wen Quan

机构信息

Shanxi Key Laboratory of Advanced Manufacturing Technology, North University of China, Taiyuan, 030051, China.

School of Mechanical Engineering, North University of China, Taiyuan, 030051, China.

出版信息

Sci Rep. 2024 Aug 12;14(1):18731. doi: 10.1038/s41598-024-68456-x.

DOI:10.1038/s41598-024-68456-x
PMID:39134574
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11319450/
Abstract

The existence of striations, and scratches in Abrasive waterjet (AWJ) cutting surface necessitates an exploration of these features for enhancing the cutting accuracy of AWJ machining. This article investigates surface roughness and micro-scratch morphology characteristics on brass cutting surfaces. According to the variation law of surface roughness values, the cutting section can be divided into three regions: the initial region, smooth region, and rough region. Numerous micron-scale scratches were observed in the cutting section. The scratch length, width, and depth values all show an increasing trend as the cutting depth increases, with the scratch length experiencing the greatest growth and variability. The influence of position and traverse speed on scratch size was studied using variance analysis. Furthermore, the length and width of the scratches on the cutting surface are significantly influenced by their position, accounting for 89.19% and 81.13%, respectively. Traverse speed had a minor effect on scratch length and width, accounting for 0.01% and 2.64% respectively. The depth of the scratches is influenced by their position on the cutting surface at a rate of 41.12%, while traverse speed had an impact of 38.10%. Finally, a mathematical method based on standard scores was proposed to assess the quality of the cutting section based on micro-scratch dimension.

摘要

磨料水射流（AWJ）切割表面存在条纹和划痕，因此有必要对这些特征进行探索，以提高AWJ加工的切割精度。本文研究了黄铜切割表面的表面粗糙度和微划痕形态特征。根据表面粗糙度值的变化规律，切割截面可分为三个区域：初始区域、光滑区域和粗糙区域。在切割截面中观察到许多微米级的划痕。划痕的长度、宽度和深度值均随着切割深度的增加而呈现增加趋势，其中划痕长度的增长和变化最大。采用方差分析研究了位置和横向速度对划痕尺寸的影响。此外，切割表面上划痕的长度和宽度受其位置的影响显著，分别占89.19%和81.13%。横向速度对划痕长度和宽度的影响较小，分别占0.01%和2.64%。划痕深度受其在切割表面上位置的影响率为41.12%，而横向速度的影响率为38.10%。最后，提出了一种基于标准分数的数学方法，以基于微划痕尺寸评估切割截面的质量。

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