Aluminium alloy laser beam welding receives skill

Now, in producing method of solder of commonly used MIG, TIG solder will solder aluminium alloy data. Apply these 2 kinds of method to be able to get soldering crackajackly of course contact, but, these 2 kinds of method have frit to show ability however poor, solder be out of shape big, produce power is low one class defect. These year, a lot of Scientists and Technologists are germinant discuss solder the new measure of aluminium alloy, like laser beam welding of laser beam welding, double beam of light, laser - compound solder and conflict blend electric arc solder, below before principal introducing 3 kinds solder the chief characteristic of method [3] .
The laser beam welding of 1 aluminium alloy
Follow the ceaseless development of equipment of laser beam machining of high-power, tall function, aluminium alloy laser beam welding receives skill to begin very fast, it is to solder in the future of aluminium alloy principal develop one of way. Now, aluminium alloy laser solders to had been applied to be in bodywork on the join of the component, in Audi A2(complete aluminium constructs) on, have 30m laser welding line.
Compare with solder of traditional TIG, MIG, will solder with laser aluminium alloy has the following advantage:
(1) energy density is high, heat is defeated into the quantity small, solder be out of shape small, can get fused area and hot influence area narrow and frit is deep big welding line.
(2) cooling rate is rapid, can get arranging imperceptible welding line, reason solders contact function is crackajack.
(3) solders speed fast, function much, adaptability strong, reliability is high and do not need vacuum facility, soldering so the respect such as precision, power, automation is had without comparable advantage.
Laser beam welding receives be a kind of high-energy density to solder technology, solder aluminium alloy can useful avoid a tradition to solder the defect of technical happening, intensity coefficient progress is very great. But laser power is compared normally low, thick to aluminium alloy board solder hard, surface of an aluminium alloy faces the absorptivity that stimulates beam of light very low, and caption of threshold value of the existence when wanting to arrive at deep fusion welding, there is sure difficulty on the technology so.
The laser of 2 aluminium alloy one electric arc is compound solder
Receive aluminium alloy to have a lot of advantages with laser beam welding of course, but still put in bigger limitation, if equipment capital is tall, contact clearance is concessional requirement of degree of working procedure of provision of small, workpiece is strict wait. Solder for more useful ground aluminium alloy, everybody developed laser - electric arc is compound solder technology. Laser - electric arc is compound and principal be laser and TIG electric arc, MIG electric arc and plasma is compound. Now, this technology is compared in the developed country delibrate such as Germany and Japan much, there already was sure use in car line of business, there is 48 to be in laser on front door - MIG solder path, and compound solder still can use laser will solder bodywork and axle. Nevertheless the delibrate of this technology mixes domestic contain use going up still is vacant at all.
Aluminium alloy laser - compound solder solved electric arc well the threshold value caption that surface of the power that laser beam welding receives, aluminium alloy faces the absorptivity that stimulates beam of light and deep fusion welding, it is to provide the aluminium alloy of foreground to solder extremely one of technologies, the technique is not old still now, during be in delibrate dug.

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