2007-09-10 - LASER WELDING CO 2 vs Nd-YAG BENCHMARK STUDY

The development of laser technology in the industrial field over the last years, with more powerful, versatile, reliable equipment with more competitive prices, has enabled the rapid implementation of this technology in the industrial manufacturing processes of different sectors such as the aeronautical, the automobile and the capital resource fields amongst others.


The development of laser technology in the industrial field over the last years, with more powerful, versatile, reliable equipment with more competitive prices, has enabled the rapid implementation of this technology in the industrial manufacturing processes of different sectors such as the aeronautical, the automobile and the capital resource fields amongst others. The laser sector has proven its industrial enforceability in cutting, marking, drilling and welding processes, and many components and structures which have been manufactured using this technology do no longer contemplate the participation of any other. Amongst the laser equipment developed to fulfil the industrial manufacturing requirements we can find the CO2 and Nd-YAG lasers, which have monopolised the worldwide laser sales in industrial applications since the last years of the previous century and until today.

AIM.- The present study is going to prove the differences between these two lasers in the application of welding on a component used in the wind sector. The component itself includes a central cylinder body made of a mechanised tube of ST- 52 steel and two lids made of DOMEX420 steel, mechanised to their final standards. These lids are assembled in the mechanised seating on both ends of the tube, and are welded by laser with minimum deformation requirements, since the welding is carried out on the finished part, without latter mechanisation processes and with maximum resistance to the torsional couple.

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