12 September 2002 Three-dimensional laser welding of the anti-explosion loop
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Abstract
The fillet welding of the locating stands is just a typical three-dimensional laser welding processing. It was just like the fillet welding along the surface of a cylinder shape. Experiment results showed that a successful laser welding should be with some technique and skills. So a special clamp apparatus was made for fixing the parts and keeping them in correct position. The welding parameters were tested and determined in the study. For the main part of welding, 3000W laser power, 3m/mim welding rate, a angle of 15 degree between laser beam and vertical plane were used and had a full penetration of weld bead and a smooth bead surface. For the beginning and the ending part, the ramp function had to be used to overcome the weld defects of burning though and inadequate joint penetration. Also, the spot position at the beginning and the ending in the welding process should be adapted to make a good joint. In order to eliminate the influence of laser induced plasma that produced from the surface of galvanized sheet when it was heated by laser energy, a flow of argon gas with the rate of 10 1/mim as a side gas was employed. The experiment results indicated that the method of a teaching program was not enough for having a good welding quality because of the flutter phenomena by the non-uniform motion of machining head in the processing. Instead of it, the offline program was employed.
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Kai Chen, Kai Chen, Rongshi Xiao, Rongshi Xiao, Zhiyong Wang, Zhiyong Wang, Tiechuan Zuo, Tiechuan Zuo, } "Three-dimensional laser welding of the anti-explosion loop", Proc. SPIE 4915, Lasers in Material Processing and Manufacturing, (12 September 2002); doi: 10.1117/12.482873; https://doi.org/10.1117/12.482873
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