Laser Beam Welding with Keyhole Effect
Deep penetration welding produces narrow, deep seams without strong thermal influence on the surroundings. It uses a focused photon beam to form a keyhole.
Physical-Chemical Operating Principle
Laser beam welding with deep-penetration effect uses high-intensity light (photon radiation) to melt the workpiece and create metal vapor capillaries. These capillaries are then closed by a subsequent laser pulse, resulting in a narrow, deep weld.
Metallurgical Relevance & Welding Risks
This process allows high precision and minimal thermal impact on the surroundings. It reduces the risk of hot cracking and increases weld strength. However, imprecise melting or too short closing times can lead to incompletely closed capillaries, causing minor cracks or weak spots.
Workshop Practice & Instructions
Use a laser with high energy and precisely calibrated melting and closing times. Ensure the workpiece is clean and that laser safety equipment is used. Optimal shielding of the environment can improve weld quality.