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在研究多道激光熔覆稀释率时提出基材相对稀释率概念及其计算公式,并从冷却时间、搭接中心偏距和搭接率研究第一道对第二道的热效应以及基材相对稀释率。结果表明,GH4033在自然冷却情况下需要经历较长的冷却时间(360s)才能明显减小第一道对第二道的热效应,基材相对稀释率才会接近0;搭接中心偏距越大,基材相对稀释率越小;多道激光熔覆比较理想的搭接率为50%。
In the study of multi-channel laser cladding dilution rate of the concept of the relative dilution of the substrate and its calculation formula, and from the cooling time, lap center offset and lap rate of the first study on the second effect of heat and the substrate relative Dilution rate. The results show that GH4033 needs to go through a long cooling time (360 s) under natural cooling conditions to reduce the thermal effect of the first channel on the second channel, and the relative dilution of the substrate will be close to zero. , The relative dilution rate of the substrate is smaller; the lapping rate of multi-channel laser cladding is more than 50%.