| Title |
Effect of Welding Parameters on LASER Weldability of C - Mn Steel |
| Authors |
김기철(K . C . Kim); 윤의박(E . P . Yoon) |
| Abstract |
High power carbon dioxide LASER weldability of a structual steel has been studied. The effect of welding parameters i.e. travel speed, power level applied, postion of focus and assist gas flow rate, on the weld penetration is discussed in this paper. Test results showed that penetration depth of the weld was increased with increasing applied LASER power. The ratio of the penetration depth to the bead width has a tendency of steady increase with increasing the travel speed up to 1.4m/min. Optimum range of the position of focus was proved to be 1.5±0.5㎜ beneath the surface. |