Application of Laser Welding Technology for Stainless Steel Inner Tank of Heat Pump Water Heater
The feasibility of applying the adjustable ring mode laser welding method to the inner tank welding of the stainless steel tank of the heat pump water heater was studied through the process experiment. A set of laser welding technology adapted to the stainless steel inner tank of the heat pump water heater was proposed to improve the weld-ing efficiency and welding quality of the stainless steel inner tank of the heat pump water heater without changing the existing inner tank manufacturing process. It is proved that using the adjustable ring mode laser welding method,when the positive defocusing amount is 20 mm and the outer ring laser energy proportion reaches 30％,it can meet the reliable and stable welding of the stainless steel tank of the heat pump water heater. Adding reflective preheating plate can effectively improve weld forming and increase laser energy utilization rate.
stainless steelheat pump water heatertank linerlaser welding
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