摘要：

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.

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