Al-Si合金表面激光熔覆铝青铜合金的工艺研究

The Laser-Cladding of Al Bronze on an Al-Si Alloy

采用２ｋＷＣＯ２激光器，在无贵重气体保护激光熔池的条件下，开展了Ａｌ－Ｓｉ合金表面激光熔覆Ａｌ青铜合金的研究。探讨了激光工艺参数对熔覆层宏观质量影响的基本规律，获得了完整的工艺操作图；研究了扫描速度对熔覆层宏观形貌和显微硬度的影响；

A process the laser-cladding of Al bronze on to an Al-Si alloy has been developed that employs a 2 kW CO2 laser in the absence of an expensive gas to protect the laser-generated pool The effect of laser parameters on the macroquality of the produced coatings has been investigated and a complete operating diagram for the processing has been established The effects of traverse speed on the morphology and microhardness of the coatings have also been studied Finally, the interaction of the laser-cladding Al bronze with the Al-Si alloy in case the powder feed is delivered to the laser-generated pool only by gravity, as well as the process flow diagram, are discussed