LASER-ARC WELDING OF HIGH-STRENGTH STEELS WITH YIELD STRENGTH OF MORE THAN 700 MPa

摘要

For the first time the prospects of using laser heat sources, namely for hybrid laser-arc welding, which allows improving the strength values of welded joints and their resistance to brittle and delayed fracture due to transformation of thermal cycle of welding, characteristic for arc processes, are shown for high-strength low-alloyed steels of small thicknesses on the example of steel 14KhGN2MDAFB