Читать книгу Welding Metallurgy - Sindo Kou - Страница 50

Like EBW, LBW can produce deep and narrow welds at high welding speeds, with a narrow HAZ and little distortion of the workpiece. (Penetration depth can be up to about 20 mm, far less than in EBW.) It can be used for welding dissimilar metals or parts varying greatly in mass and size. Unlike EBW, however, vacuum and X‐ray shielding are not required in LBW. However, the reflectivity of a laser beam can be high. As with EBW, the equipment cost is very high, and precise joint fit‐up and alignment are required.