A simple model of powder catchment in coaxial laser cladding

被引：90

作者：

Lin, JM ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Mech Engn, Tainan 70101, Taiwan

来源：

OPTICS AND LASER TECHNOLOGY | 1999年 / 31卷 / 03期

关键词：

coaxial laser cladding; powder catchment efficiency;

D O I：

10.1016/S0030-3992(99)00046-8

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

High efficiency of the powder deposition in coaxial laser cladding is a key subject for this new technique adopted to the industry. A catchment model was proposed in this study to characterise the particle bonding under laser heating in the cladding process. The phenomena of the particle rebound and adhesion on substrate were discussed and the catchment efficiency was mathematically modelled based on the beam spot and the stream cross-section area. The theoretical catchment efficiency was further verified with the experiments and the results give an insight of the powder stream characteristics of the coaxial nozzle. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：233 / 238

页数：6

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