Operating principle of expanded mesh machine

Operating principle of expanded mesh machine:

The circuit is closed, so that the entire closed circuit and current are equal everywhere; But the resistance across the ground is different, especially at the point of non fixed contact where the resistance is the highest. This resistance is called contact resistance in physics.

According to the thermal effect law of electric current (also known as Joule's law), Q=I ^ 2; × According to Rt, if the current is equal, the higher the resistance, the higher the heat generated in the area. During welding, the column head has the highest resistance, and the most electric heat naturally occurs in this area. When the column head presses the transverse and longitudinal diameters together, it releases a large amount of heat, causing the transverse and longitudinal diameters to dissolve and bond instantly.