How to Safely Use a Handheld Laser to Weld Metal Materials
At present, in the field of metal welding, it is difficult to weld non-ferrous metal materials such as aluminum alloys by traditional welding, while the application of laser welding is wider, and aluminum alloys and other materials can also be easily welded. However, when using a handheld laser welding machine, special attention should be paid to safety issues.
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During hand-held laser welding, people are exposed to the presence of lasers. In terms of safety protection, many people are relatively easy to ignore, and often simply put on protective glasses and start operations. This is a very dangerous practice. The laser radiation and smoke particles in the laser welding process will bring harm to the human body.
Hazards of Laser Radiation
Safety glasses must be worn when using the hand-held laser welding system. Whether looking directly at the laser beam or the reflected beam can cause eye damage to the operator or those around. The light reflected in the welding process is not only harmful to the eyes, it can even ignite a lot of things, such as hair, clothes, and even the building itself, causing fires and even explosions, endangering lives.
Hazards of smoke particles
Compared with the damage caused by laser radiation, it is easier to ignore the damage caused by the smoke particles generated during the welding process. In fact, they are even more terrifying invisible killers! After welding, very small, carcinogenic, flammable smoke particles will remain on and around the workpiece. While inhalation of these fumes does not result in immediate death, their damage to the body can lie dormant for 10-20 years.
So how should the handheld laser welding machine be used safely?
1. Whether it is an operator or a viewer, it is not safe to wear only protective goggles, and should wear a helmet, gloves, and flame-retardant protective clothing to avoid exposing hair and skin to the laser environment.
2. A special smoke removal device should be equipped in the laser processing area.
3. During operation, in case of emergency, such as water leakage or abnormal laser sound, you need to press the emergency stop button immediately and cut off the power quickly.
4. The external circulating water switch of laser welding must be turned on before operation, because the laser system adopts water cooling method, and the laser power supply adopts air cooling method. If the cooling system fails, it is strictly forbidden to start the operation.
5. It is strictly forbidden to touch all circuit components in the machine when working. When the laser welding machine is working, the circuit is in a state of high voltage and strong current, and untrained personnel are prohibited from operating the machine.
6. Do not disassemble any parts of the machine at will, and do not weld when the safety door of the machine is open, and do not aim the laser head at the equipment parts. It is forbidden to use external equipment to reflect the laser when the laser is working.
7. Do not place flammable and explosive materials in the place where the laser light path or laser beam can be irradiated, so as to avoid fire and explosion.