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Taizhou Feida Machine Tool Co.,Ltd
Add:Muyu Industrial zone, Wenling city, Zhejiang province, China

High Quality Dc Stick Welding

- Apr 18, 2018 -

In the welding operation, although the current in the circuit is everywhere, but the resistance is not the same everywhere, the resistance at the non-fixed contact is the largest (this resistance is called the contact resistance), according to the law of the thermal effect of current (also known as the Joule law) That is, Q=IRt shows that when the current is equal, the higher the resistance is, the higher the heat is. Therefore, when welding, the contact of the welding rod, which is the contacted metal body, has the highest contact resistance, and in this part The electric heat generated is naturally the most. In addition, the welding rod is an alloy with a lower melting point and naturally melts easily.

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