Welding method: almost all kinds of welding methods can be used for welding aluminum and aluminum alloy, aluminum and aluminum adaptability to a variety of welding methods and their respective applications in a variety of welding methods. Gas welding and SMAW method, the device is simple, easy to operate. Gas welding can be used for less demanding quality welding repair welding of aluminum sheet and casting. The SMAW available for repair welding of aluminum alloy castings. The inert gas welding (TIG or MIG) is the most widely used method of aluminum and aluminum alloy welding. Aluminum and aluminum alloy sheet can be used tungsten AC TIG, or tungsten electrode pulse TIG. Arc welding of aluminum and aluminum alloy thick plate can be used tungsten helium, argon-helium mixed tungsten arc welding, MIG welding, pulsed MIG welding. MIG welding, pulse melted gas metal arc welding applications more widely (argon or argon / helium mixture) before welding preparation

Before welding cleanup: aluminum and aluminum alloy welding, Aluminium Welding Wires should be strictly to clear the workpiece weld and wire surface oxide film and oil

Chemical cleaning chemical cleaning, high efficiency, stable quality, suitable for cleaning up little wire and size, mass-produced artifacts. Available immersion method and scrub and French. Available acetone, gasoline, kerosene and other organic solvent surface oil, with 40 ℃ ~ 70 ℃ 5% ~ 10% NaOH solution alkaline cleaning 3min ~ 7min (pure aluminum little longer, but not more than 20min), mobile water rinse, followed by room temperature to 60 ° C, 30% HNO3 solution pickling 1min ~ 3min, mobile wash, air dry or low-temperature drying.

Mechanical cleaning: workpiece size is larger, longer production cycle, the contamination of the the multilayer welding or chemical cleaning and then, often using mechanical cleaning. First wipe the surface with organic solvents such as acetone, gasoline degreasing, followed directly with a diameter of 0.15mm ~ 0.2mm brass wire brush or stainless steel wire brush, brush the exposed metallic luster date. Generally should not use the grinding wheel or sandpaper, sand so as not to stay on the metal surface, into the molten pool generated welding slag and other defects. Also available scraper, rasp clean up the surface to be welded.

Clean up after such long time storage (if more than 24 hours) should be re-processing.

, The pad: an aluminum alloy at high temperature strength is low, the flow properties of the liquid aluminum, the weld metal during welding is easy to produce discover phenomenon. Welding Wires Manufacturer is often used in order to ensure penetration while avoiding collapse, pad to lift up the molten pool and nearby metal. The pad may be graphite plates, stainless steel plates, carbon steel, copper, or copper rod. The surface of the pad to open a circular arc-shaped grooves, to ensure that the seam opposite molding. Also can not add the pad side welding molding proficient or advanced technology measures taken strictly for arc welding energy feedback control, but requires welding operation.

Preheat: thin, small pieces of aluminum generally do not preheat, thickness 10mm ~ 15mm can be preheated before, according to the different types of aluminum alloy preheating temperature of 100 ° C. to 200 ° C, available oxygen-acetylene flame , electric stove or blowtorch heat. Preheat the weldment can reduce distortion to reduce porosity and other defects. Weld treatment

Post-weld clean up after welding will destroy the aluminum surface passivation film, sometimes corrode aluminum parts should be clean to stay near the weld and the residual flux and welding slag. Simple shapes general the workpiece can be washed with hot water or steam blow brush and simple way to clean. Require high complex shape of the aluminum parts in hot water with a stiff brush scrub, and then about 60 ℃ ~ 80 ℃, the concentration of 2% to 3% aqueous solution of chromic anhydride or potassium dichromate solution immersion 5min ~ 10min, with a stiff brush, scrub, and then washed in hot water washed, oven drying, or dried with hot air, can also be dried naturally.

Does not require post-weld heat-treated aluminum container general welding heat treatment.