What Is The Effect of Current of Intermediate Frequency Inverter Spot Welding Machine on Spot Welding Heating?

The impact of current in medium-frequency inverter spot welding machine on spot welding heating is very important. It directly determines the heat input and welding effect during the welding process. The following are the impacts of current on spot welding heating:

1. Heat input: The magnitude of the current determines the heat input during the welding process, that is, the energy density at the welding point. A larger current usually generates more heat, causing the temperature of the welding point to rise.
   
   
2. Welding speed: A larger current generally makes the welding speed faster, as the temperature of the welding point reaches the required welding temperature more quickly, thus shortening the welding time.
   
   
3. Melt pool size: An increase in current will lead to an enlargement of the melt pool size at the welding point, because more heat is input into the welding point, making the surrounding metal of the welding point easier to melt.
   
   
4. Melting depth: An increase in current will also increase the melting depth of the welding point, that is, the degree of melting of the surrounding metal of the welding point. This may affect the mechanical properties and quality of the weld.
   
   
5. Local deformation: Excessive current may cause local deformation around the welding point, especially for thinner workpieces. This may affect the appearance and mechanical properties of the welding point.
   
   
6. Electrode wear: A larger current may accelerate electrode wear, as more heat can cause the electrode surface to wear out faster.
   
   
7. Electrode temperature: A larger current usually leads to an increase in electrode temperature, requiring more frequent cooling to prevent electrode overheating.