摩擦堆焊工艺参数的优化选择

利用工艺试验分析了工艺参数对摩擦堆焊工艺的影响：随着耗材转速的增加，堆焊层的宽度和厚度均线性减小；随焊敷压力的增加，堆焊层宽度增加，厚度减小。结合热源模型建立了摩擦堆焊工艺参数匹配因数nF(耗材转速与焊敷压力之代数乘积)与摩擦预热时间tp的函数关系。实际应用中，可以根据摩擦预热时间确定工艺参数匹配因数，然后根据各个参数对堆焊层性能的影响，具体确定三个参数，完成工艺参数的优化选择。

Optimization for friction surfacing parameters

The effects of process parameters (rotation speed, force and traverse speed) on friction surfacing layer were investigated. The results show that width and thickness of surfacing layer decrease linearly with increasing consumable-rod rotation speed and width increases and its thickness decreases with increasing force. On the basis of heat source model, the functional relationship between match factor of process parameters (product of rotation speed and force) and preheating time was established. The match factor of process parameters could be determined according to preheating time, then three process parameters could be decided according to their effects on surfacing layer properties, and the process parameters were optimized.