Study on Micro-character of Weld Line in Copper Tubes with Inner Grooved by High Frequency Welding for Air-conditionings and Refrigerators
The micro-character of weld line in copper tubes with inner grooved by high frequency welding for air-conditionings and refrigerators was briefly studied,the existent manner and the reason of quality problem were found out,betterment measure was put forward and realized,the problem in the production was settled and the product quality became stable.