Abstract

Pulse laser welding was performed on C22 metal bellows. The results can be summarized as follows: Laser welded metal bellows had less thermal distortion, narrow HAZ, high aspect ratio in comparison with other welding processes like TIG, Plasma welding. Laser welded bellows has higher tensile strengths than that C22 base metal. The value of hardness in laser weld metal was measured 100-120 Hv, it was decreased compared to the base metal. It is reasoned that due to the annealed by heat input during the laser welding.

Keywords

• Bellows;
• Laser Welding;
• Diaphragm;
• Seam Tracking

• 벨로우즈;
• 레이저 용접;
• 다이아프램;
• 용접성 추적장치;