Why Do Resistance Welding Galvanized Sheets Stick To Electrodes?

The main reason for electrode adhesion when resistance welding galvanized sheets is that the galvanized layer may melt or react with the electrode surface at high temperatures, causing the electrode to stick to the welding material. This is known as electrode adhesion.

Possible causes include:

1. Galvanized layer melting at high temperatures.

2. Oxidation layers and contaminants on the galvanized sheet surface affecting welding quality and increasing adhesion risk.

3. Unsuitable welding parameters, such as excessive current or welding time, leading to high temperatures and worsening the problem.

4. Poor electrode surface quality, with dirt or oxidation increasing adhesion risk.

To reduce or avoid electrode adhesion:

- Ensure the welding material surface is clean and free from contaminants.

- Optimize welding parameters (current, time, and pressure).

- Use appropriate electrode materials and coatings to minimize reactivity.

- Regularly clean and maintain welding equipment to ensure good electrode surface condition.

- Preheat the material before welding to reduce galvanized layer melting and adhesion.

These measures can effectively reduce electrode adhesion, enhancing the quality and stability of resistance welding on galvanized sheets.

If you have welding machine requirements, please contact Ms. Zhao

E-Mail: pdkj@gd-pw.com

Phone: +86-13631765713