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The main appearance components of Jiangmen ceiling fans are made of aluminum alloy, which has outstanding formability, weldability, and processability. However, if the processing ability is lacking, it is easy to present defects such as sand holes and air holes. So how to solve the problem of welding sand holes and air holes?

Normally, the reason for the formation of sand holes during welding is due to the presence of dust or impurities from materials different from the welded parts at the interface; Oil stains at the interface; When welding, if the welding rod moves too fast, it will form a covering layer and also form sand holes; If the current is too high, it will cause sputtering and also form sand holes. The main reason for the formation of pores is that the purity of argon gas is not high, it needs to be above 99.9%, and the weld seam is silver white; It is advisable to extend the tungsten electrode 2mm beyond the ceramic nozzle; Gas does not provide good protection for the weld seam, and the welding method, welding current, or welding speed should be changed; Incomplete organization at the weld seam.

When solving the sand holes and air holes in fan welding, we can refer to the above skill conditions. If the purity of the argon used is not good, high-purity argon can be replaced and high-purity argon (99.99% purity) can be used. If the weld seam and welding wire have not been thoroughly cleaned, we can ensure the cleanliness of the weld seam and welding wire. If welding is not carried out in a closed environment and impurities in the environment invade the weld seam, a dedicated closed welding chamber can be opened for welding.

Article source: Jiangmen ceiling fan www.yalu888.com