What are the safety precautions for gas shielded welding?

In industrial production, different welding methods are chosen for different plates, such as the well-known electric welding and gas-shielded welding. Regardless of which method is used, operators need to pay extra attention to avoid accidents. So, what are the safety precautions for gas shielded welding? Let the editor introduce it to you below:

The welding specifications of CO2 welding mainly include: welding current, arc voltage, welding speed and gas flow. These parameters have a great impact on the heating and melting of the welding wire and the formation of the weld. When arc closing in CO2 welding, the dry extension length should be kept unchanged, and the burning point should be pulled to the edge of the molten pool to stop the arc. The welding machine will automatically complete the arc closing process of burnback, ball elimination, and delayed gas protection.

In addition, the welding voltage of gas shielded welding must form a good match with the current. Welding voltage that is too high or too low will cause spatter. The welding voltage should increase as the welding current increases, and should decrease as the welding current decreases. The optimal welding voltage is generally between 1-2V, so the welding voltage should be carefully adjusted. Specific operational precautions also include the following points:

1. Before using the Welding Torch, you must first check the radiation absorption performance and air tightness. The connection parts of the welding torch, the gas channel and the regulating valve must not be stained with grease.

2. When the welding torch is ignited, the acetylene valve should be opened first to ignite, and then the oxygen valve should be opened to adjust the flame; when turning off the flame, the acetylene should be turned off first, and then the oxygen. When out of use, it is strictly prohibited to permanently connect the welding torch, hose and gas source.

3. When using a cutting torch, you should clean the paint, rust, etc. on the working surface, and do not work on the cement floor to prevent rust water and cement from exploding at high temperatures and injuring people.

4. When igniting the cutting torch, do an ignition test first to check whether the cutting nozzle is installed properly. When ceasefire, acetylene should be turned off first and then oxygen.