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Journal of Materials Engineering and Performance

, Volume 13, Issue 1, pp 103–106 | Cite as

Erosion testing and surface preparation using abrasive water-jetting

  • Lidong Wang
Testing And Eualuation

Abstract

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 α 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.

Keywords

abrasive water-jetting average surface roughness erosion surface hardness 

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Copyright information

© ASM International 2004

Authors and Affiliations

  • Lidong Wang
    • 1
  1. 1.Center for Manufacturing ResearchTennessee Technological UniversityCookeville

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