The effect of laser welding on the human body
2020/06/10 Editor: Haiwei 863
Is laser welding harmful to the human body? I believe that many of my friends are more concerned about this issue. Today, I will introduce the impact of laser welding on the human body.
Laser deep penetration welding can thoroughly penetrate the workpiece, and has large input energy and fast welding speed. It is currently the most widely used laser welding mode. This method is undoubtedly a more convenient way of welding. Laser welding machines can generally be divided into heat conduction welding and deep penetration welding. The heat of the former diffuses into the workpiece through heat transfer, and only melts on the surface of the weld. The interior of the workpiece is not completely penetrated, and vaporization is basically not generated. It is mostly used at low speeds. Welding of thin-walled materials; the latter not only completely penetrates the material, but also vaporizes the material to form a large amount of plasma. Due to the large heat, a keyhole phenomenon will appear at the front of the molten pool.
Many gases are generated during the welding process, but most of them are inert gases, which are not toxic. However, it depends on the different welding materials. It is best to take protective measures to reduce gas inhalation. The invisibility and energy of the laser emitted by the welding machine is too high. Non-professionals should not touch the laser source, otherwise it is very dangerous. In addition, lasers are also electromagnetic waves, but the wavelengths of lasers used in welding machines are very large, so there is no radiation hazard from short-wavelength light waves such as ultraviolet rays.