A THERMAL-MODEL OF LASER CLADDING BY POWDER INJECTION

被引：197

作者：

HOADLEY, AFA

RAPPAZ, M

机构：

[1] ECOLE POLYTECH FED LAUSANNE,CH-1007 LAUSANNE,SWITZERLAND

[2] ECOLE POLYTECH FED LAUSANNE,DEPT MAT,CH-1015 LAUSANNE,SWITZERLAND

来源：

METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY | 1992年 / 23卷 / 05期

关键词：

D O I：

10.1007/BF02649723

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A two-dimensional (2-D) finite element model is presented for laser cladding by powder injection. The model simulates the quasi-steady temperature field for the longitudinal section of a clad track. It takes into account the melting of the powder in the liquid pool and the liquid/gas free surface shape and position, which must conform to the thermal field in order to obtain a self-consistent solution. The results for an idealized problem, where there is almost no melting of the substrate material, demonstrate the linear relationship between the laser power, the processing velocity, and the thickness of the deposited layer. The calculated clad heights agreed well with the experimental values for the conditions where a cobalt-based hard-facing alloy is clad onto mild steel with a linearly focused laser source.

引用

页码：631 / 642

页数：12

共 19 条

[1]

BIELER HW, 1989, THESIS RWTH AACHEN, P76

[2] A TEMPERATURE-BASED FINITE-ELEMENT SOLUTION FOR PHASE-CHANGE PROBLEMS [J].