Clean up after welding
1. Carefully wash and weld the joint in hot water with a bristle brush.
In 2, the welding temperature is 60 ~ 80 ℃, the mass fraction of 2% ~ 3% of chromic anhydride in aqueous solution or potassium dichromate solution soaking for about 5 ~ 10 min, and scrub brush carefully cleaning. Or put in 15 ~ 20 ℃ the weldment in the mass fraction of 10% nitric acid solution immersion 10 ~ 20 min.
3. Wash the welding parts in hot water.
4, the weldment with hot air blow dry, or within 100 ℃ drying oven drying
1. Remove oxides from the groove and surrounding parts of the workpiece and the surface of the welding wire by mechanical or chemical methods before welding;
2. Qualified shielding gas shall be used for protection during welding;
3, in the gas welding, using flux, in the welding process of continuous welding wire cupping the oxidation film on the surface of the pool.
See the Extruded Aluminum Enclosure, customized Power Supply Box