1, better effect because of the success of welding, aluminum welding rotary cutting tool point is too low, the second reheating, aluminum easy deformation.

2, the electrode must be evenly flux, in order to ensure the quality of solder joints.

3, the torch flame can not be too long, and must use Weihuo heated, otherwise the dispersant tubes easily melt.

4, the welding is finished, wait two or three minutes of nylon yarn special slurry pipe cooling after cement repositories can contact, otherwise the solder joint leakage.

5, welding time not too long, because the melting point is too low for too long can easily lead to tube wall melting or thinning, suppress easy leak.

6, the liner must be placed a wet towel, protection in place, because the welding of the space is small, so be sure to pay attention to the protection of refrigerator

7, the electrode can not solder powder with welding torch heating and then dip, because the electrode melting temperature is too low.