1. Operators of butt welding machines must undergo professional training, be familiar with the structure, performance, and operating procedures of butt welding machines, and master the knowledge of process parameter selection and quality inspection specifications.
2. Before operation, check whether the various mechanisms of the welding machine are sensitive and reliable, whether the electrical system is safe, whether the cooling water pump system is leaking, and whether the lubricating parts are well filled with oil, etc.
3. It is strictly forbidden to butt-weld steel bars with a diameter exceeding the specified diameter. The butt-welding of the main bars must be welded first and then cold drawn. In order to ensure the welding quality, cleaning, rust removal and correction should be carried out within the range of about 150mm from the felt end.
4. When working, operators must wear colored protective glasses and hats to prevent arc light from irritating the eyes and melting metal to burn the skin.
5. The butt welder should be parked in a clean, dry and ventilated place. The butt welder used on site should be equipped with a rain, moisture, and sun shed, and fire-fighting equipment should be provided. No flammable materials should be stacked in the welding area.
6. The butt welding machine should be equipped with a dedicated wiring switch and installed in the switch box. The capacity of the fuse should be 1.5 times the capacity of the machine. The shell of the welder must be well grounded.
7. Visual inspection after butt welding, steel joints should be properly upset, and there should be no cracks and obvious burns on the surface. The crankshaft of the joint axis is not more than 6°, and it is not more than 1/10 of the diameter of the steel bar, and not more than 2mm.
8. After the operation, the site should be cleaned up, the fire extinguishing species should be eliminated, and the water in the cooling pipeline should be blown out with compressed air in winter, and the power supply should be cut off.
