Can the resistance wire be directly welded if it is broken?
The resistance wire is used to generate heat and requires high temperature not to melt. If the resistance wire is broken, you need to connect two sections of it.It is not workable to welding.Because the contact resistance is very large, at the same current, the heating power of the resistance wire is P=I²R, that is to say, the heat generated at the fracture is large, and the temperature is high. It is easy to re-melt the solder and cause the circuit to break.
When encountering such problems, it is necessary to understand the material of the resistance wire, the environment in which the resistance wire is used, and other factors.
For example, resistance wires with a temperature above 500 degrees cannot be welded together. The only way is to connect with a wire rod, but the service life is short, and it may not be suitable for the use environment.
How the resistance wire to be welded:
Twist the heads of the two resistance wires firmly with each other, and then use the flame of a lighter to burn the ends of it. Then the heads of the two resistance wires are welded into a small round head.
Therefore, the welding problem of the resistance wire is determined according to the actual environment.
