Effect
The function is to clamp the welding electrode and to conduct the welding current when welding. It is a hand-held insulating device used in conjunction with an electric arc welder to hold and manipulate the electrode during manual arc welding and to ensure electrical connection with the electrode. Electric welding tongs have main technical indicators such as shell protection, anti-shock protection, temperature rise, resistance to welding splash, and drop resistance.
Material
Cast copper is used as a clip, ceramic and plastic handles are used as insulators. It should have good electrical conductivity, low heat generation, light weight, strong clamping electrode and convenient electrode replacement.
Safety requirements
The role of welding tongs is to clamp the electrode and conduct current, which is the main tool for electrode arc welding. And it is directly related to the safety of the welder, so the following safety requirements must be met:
1. The welding tongs should clamp the welding rod at any angle set and ensure that the welding rod is safe and convenient.
2. The handle of the welding tongs should have good insulation and thermal insulation properties. It is forbidden to use electric welding tongs with insulation damage or no insulation.
3. The connection between the welding tongs and the welding cable should be simple and reliable, and the contact is good.
4. The welding tongs should be light (no more than 0.6kg) and easy to operate.
5. During the welding process, it is forbidden to put the overheated welding tongs into the water for cooling and continue to use.
Performance
The welding tongs can safely and quickly mount the welding rod and remove the remaining electrode residue; the electrode can be welded to any specified part and can be welded to only 50mm long; if the operator does not apply any external force Clamp the electrode of various specifications and diameters specified by the manufacturer; when the electrode is bonded to the workpiece, the electrode can be separated from the workpiece.