The Advanatges of the Nd:YAG Laser welding process
No/minimal undercut around the weld Lowest heat input of any comparable welding process. No distortion of the work piece. The laser beam is focused to a very small diameter. Precise control of the weld location. Can weld close to important features without damage Only sufficient material deposited to do the job. Resulting in minimal machining to complete the job. Fine grain structure of the weld material. No discolouration of weld and surrounding material. No discolouration of the parent part No weld splatter Welds down to 0.3mm Weld inside cavities Non porous welds Fast, cost effective. Reduces need for inserts in injection moulds. No fillers or fluxes Weld dissimilar metals, e.g., Steel onto beryllium copper Assembly weld small metal parts without filler rod
Only a small volume is fused with minimal heat input. This enables distortion-free welding, frequently without the need for preheating. Extremely short weld time prevents coarse grain formation. The heat affected zone measures only a few tenths of a millimeter with minimal change in the structure. With the right choice of filler material all subsequent processing, such as polishing or etching, can be carried out without a problem Loss of hardness and resilience in the basic material hardly ever occurs, nor does any coarse-grain zone or undercut. Welds typically have adequate hardness as deposited, not requiring pre- or post-weld heat treatment.