宽带激光熔覆粉末有效利用系数的分析  

The Analysis of the Efficient Utilization Coefficient of Broad-beam Laser Cladding Coating Formed by the Powder Feeding Method

作　　者：张庆茂[1] 刘喜明[2] 关振中[3] 

机构地区：[1]解放军军需大学 [2]吉林工学院,长春130062 [3]中科院长春光学精密机械研究所

出　　处：《应用激光》2000年第5期209-212,共4页Applied Laser

摘　　要：推导出激光熔覆过程中粉末有效利用系数表达式 ,并利用金相法检测的相关参数对粉末有效利用系数进行了计算。结果表明 :单位时间、作用时间、单位长度熔覆层粉末有效利用系数具有相同的方程形式 ,均随扫描速度的增加而增大 。The equation expressing the relationship between the efficient utilization coefficient ε and the parameters of the laser coated layer and the prolessing parameters was derived based on metallographical measurement.The experimental method for determining the efficient utilization coefficient in laser coating process by powder feeding method was designed.By varying the powder feeding rate and scanning speeding V under definite laser power P and beam spot dimensions,Coating with different thickness was obtained.The factors effcted on the efficient utilization coefficient ε were studied carefully.When the powder feeding rate and scannign speeding V increase,the efficient utilization coefficient ε become large.The method to calculate the efficient utilization coefficient ε is convenient to understand the process.

关 键 词：激光熔覆粉末 金相检测法 有效利用系数 

分 类 号：TN249[电子电信—物理电子学] TG174.4[金属学及工艺—金属表面处理]