Resistance welding with capacitive discharge (CD) or inverter DC is preferred. CD welding concentrates a short high‑energy pulse minimizing heat‑affected zone so that the calibration curve of the bimetal is not altered. Inverter DC is more controllable for thicker materials. We can recommend best, given the thickness of your bimetal and the material of your frame.

The system provides feedback through a real-time energy monitoring system which compares the weld to an energy profile stored in memory. If the weld is not of the desired energy (due to for example to worn electrodes) then the machine warns the operator or automatically compensates. An optional weld resistance measurement feature adds further control to the process.

Yes. This has different current ratings, using bimetal strips of different thicknesses and widths. The machine “remembers” the welding “recipes” (position, energy, force etc.) for each product and changeover is usually less than 15 min.

Every day, clean the welding electrodes and check the compressed air supply. Every week, check the condition of the deposited electrodes and dress or replace outworn electrodes. Every month, check the weld energy against a reference shunt. The PLC in the machine also tracks the life of the electrodes and prompts the operator when it is time for a replacement.

A post‑weld pull‑test station is optional. Most customers rely on energy monitoring and destructive sampling once in a while. However, we can supply an inline pull‑test station that samples at a set rate (e.g., 1 per 500 welds) automatically.