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Erosion Testing and Surface Preparation Using Abrasive Water-Jetting

机译:磨蚀水射流的冲蚀测试和表面处理

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摘要

Erosion testing and surface preparation are studied using a 3-axis Computer Numerical Control (CNC) abrasive water jetting (AWJ) apparatus. The effects of erosion time t, impingement angle alpha and pressure p on the erosion rate E, average surface roughness R_a, and surface hardness Rockwell C Hardness (HRC) were investigated in detail. Compared with conventional grit blasting, AWJ can reduce grit embedment in the target material due to the action of the high-pressure water. AWJ also has the advantage of generating a higher average surface roughness R_a over water jetting (WJ) due to the action of abrasive particles. In addition, AWJ increases the surface hardness HRC of the substrate material. The obtained higher degree of average surface roughness is helpful for improving the bonding strength between the coating and the substrate material. The erosion testing and the surface preparation are numerically controlled by a 3-axis CNC system; therefore precise and detailed results for various operating parameters can be obtained.
机译:使用3轴计算机数控(CNC)磨料水喷射(AWJ)设备研究侵蚀测试和表面处理。详细研究了腐蚀时间t,冲击角α和压力p对腐蚀速率E,平均表面粗糙度R_a和表面硬度洛氏C硬度(HRC)的影响。与常规喷砂处理相比,由于高压水的作用,AWJ可以减少砂粒在目标材料中的嵌入。由于磨粒的作用,AWJ还具有比喷水(WJ)产生更高的平均表面粗糙度R_a的优势。另外,AWJ增加了基材的表面硬度HRC。所获得的较高程度的平均表面粗糙度有助于改善涂层与基底材料之间的结合强度。腐蚀测试和表面处理由3轴CNC系统进行数字控制;因此,可以获得各种操作参数的精确而详细的结果。

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