Prepare 1 before welding, soldering before cleaning: aluminum and aluminum alloy welding, should be strictly removed before welding oxide film and the oil of the workpiece and the wire surface weld; 1) chemical cleaning chemical cleaning efficiency high aluminum products processing prices, stable quality, suitable to clean up the wire and the size of small, mass-produced parts. Available in two French immersion method and scrubbing. Available surface organic solvent acetone, gasoline and kerosene to oil, with a 5% ~ 10% NaOH solution Caustic 40 ℃ ~ 70 ℃ of 3 min ~ 7 min (aluminum take longer but no more than 20 min) oxidized aluminum products processing , mobile water rinse, followed by a room temperature to 60 ℃ of 30% HNO3 acid solution 1 min ~ 3 min precision aluminum products processing, mobile wash, air dry or low temperature drying. 2, plate: aluminum at high temperatures, low intensity aluminum products processing, good flow properties of molten aluminum, weld metal during welding prone to staying phenomenon. To ensure penetration but will not collapse, welding is often used to hold the plate and around the metal bath. Plate can be graphite plate, stainless steel, carbon steel, copper or copper and the like. Surface of the pad to open an arc-shaped slot to ensure that the weld opposite forming. Also can not add plate side welding, but requires skilled welding operations or take strict energy arc welding automatic feedback control and other advanced technology measures. led aluminum products processing, Shenzhen aluminum products processing, precision provided by Jin Jin Precision Parts Co., Ltd., Huizhou. Huizhou Hing Precision Parts Co., Ltd. (hzjxbp.com) (www.hzjxbp.com) strong, credible, in Huizhou, Guangdong standard mold industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinxing into the brilliant precision and you work for a better future!