Pneumatic butt welding machine, also known as current welding machine or resistance butt welding machine. Using the resistance between the surfaces of the two product workpieces, a low voltage and high current flow are applied in an instant, causing the surfaces of the two metal materials connected to each other to heat up and melt and combine in an instant.
Key points of pneumatic welding machine operation:
1. The operators of pneumatic welding machines must undergo professional skill training, understand the structure, characteristics, and operating technical specifications of pneumatic welding machines, and grasp professional knowledge such as the selection of main processing parameters and quality inspection standards.
2. Before operation, it is necessary to check whether the various organizations of the welding machine are agile and reliable, whether the circuit system is safe, whether the refrigeration water pump system has water leakage, and whether the lubrication positions are well filled with oil.
3. Welding of building steel bars exceeding the required diameter is prohibited, and the main reinforcement must be welded first and then cold drawn. To ensure the quality of electric welding, dredging, rust prevention treatment, and correction work should be carried out within the range of approximately 150mm from the edge.
4. When operating staff, it is necessary to wear colored goggles and helmets to prevent electric light from affecting the eyes and molten metal materials from burning the skin.
5. Pneumatic welding machines should be stopped in dry and naturally ventilated areas for cleaning. Pneumatic welding machines used on the spot should be equipped with a waterproof, rainproof, and sun proof isolation shed, and fire safety equipment should be readily available. Flammable materials should not be piled up within the welding scope.
6. The pneumatic welding machine should be equipped with a dedicated wiring power switch and installed in the switch box. The capacity of the fuse should be 1.5 times the capacity of the equipment. The grounding device of the welding machine casing must be excellent.
7. Inspect the appearance after welding, and try to upset the overlapping steel bars as much as possible, with no cracks or significant burns on the surface. The centerline of the connecting head should not exceed 6 °, the diameter should not exceed 1/10 of the steel bar specification, and should not exceed 3mm.