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对几种焊接方法做了比较，介绍了焊接试验情况，并给出了结果。论证了ＣＯ２气体保护药芯焊丝焊接风机叶轮的优越性和可靠性。
Several welding methods are compared, the welding test situation is introduced, and the result is given. The superiority and reliability of CO2 gas shielded flux cored wire welding fan impeller are demonstrated.