Research On Laser Welding Of Diamond Saw Blade

Laser welding technology is a very important aspect of laser processing application .the essence of this technical is to radiate high-energy laser beam on the surface of metallic material, then, the metal is melted by interaction with laser beam so as to attain to welding.In this subject, welding process and key technology of diamond saw blade have been studied deeply. Aiming at the process parameters (such as laser mode, laser power, welding speed, defocus etc.) that influence welding quality, a lot of research efforts have been done. Particular concern is given to beam alignment selection and plasma control that in the process of laser welding diamond saw blade. Whole research process base on experiment, scientific detection and analysis to be used as the means. Fundamentally clarified the influence of various parameters and factors to the welding quality of saw blade that laser welded.The results of study indicate: during laser welding diamond saw blade, the lower beam mode rank is, the better beam quantity will be, the focus is not only small in size, but also high power density. When laser power density attains 106 W/cm2, the effect of deep penetration welding will be acquired satisfactorily; by means of gas flow, plasma will be controlled effectively by the right choose of flow and the kind of assistant gas, reducing laser power loss and increasing welding depth. Suitable welding process parameter (laser mode, laser power, welding speed, defocus) to be used will lead to superior welding seam that have high -buckling strength, large depth -width ratio and no surface defect (such as porosity and hot crack etc.) , and then high quantity diamond saw blade been made.Because of the particularity of materials and it is welding between two difference materials, so it is difficult to weld diamond saw blade by laser. (The diamond saws the special of a slice of materials, and is a different race material to weld, so weld the laser to bring the certain difficulty) In our country, there are only a handful of institute keep researching in this field in the last few years, but the report concerning this aspect is still not much. The study of this subject has guiding significance to the industrial production of diamond saw blade.