1, when burning the flame, first open the oxygen valve and release trace oxygen.

2. Unscrew the acetylene valve to release a small amount of acetylene, put the welding nozzle close to the fire source and ignite the mixed gas.

3. Then adjust the gas ratio as needed to obtain the required gas.

4. After igniting and adjusting the flame, hold the welding torch in the right hand and the welding wire in the left hand, and weld on the left or right side as required.

Left welding is suitable for thin steel plates and non-ferrous metals, and right welding is suitable for thicker weldments. When welding is finished and stopped, the acetylene valve should be closed first, and then the oxygen valve should be closed.

When gas welding, it is very important to pay attention to the normal welding process, first of all, the butt welding of weldments. If the butt welding is not good, it will have a great impact on the welding work. Then, weld treatment, welding, weld beautification and acceptance. Different welding methods have different details, such as electric welding, gas welding, gas shielded welding and brazing.