Key Welding Machine Operation Points

In actual welding machine operation, different machines may vary slightly, but the basic principles are the same. Therefore, every part of the welding machine must be adjusted according to the operation manual, with particular attention to the following key points:

1. Plate specifications, dimensions, squareness, and burrs must meet requirements, and the magazine should be properly adjusted.
2. Sucker, pusher, double sheet detector, flexer, pre-roll forming, and roll forming must be correctly adjusted.
3. The working height of the Z-bar and the lower welding wheel should be adjusted according to the lower wheel correction.
4. The roller guider and calibration crown should be properly adjusted for tightness, vertical, and horizontal position. The can body opening shape must meet requirements, and the overlap deviation at both ends should be less than 0.10 mm.
5. Synchronization and over-push settings must be correct.
6. The copper wire forming dimensions must meet requirements, the process should run smoothly, and the tin marks on the upper and lower wheels should be centered with a gap of about 1.5 mm. That is, the lower wheel is centered on the Z-bar, and the upper wheel is centered on the lower wheel, ensuring the weld nugget is centered.
   After passing through the welding station, the copper wire elongation should be less than 2–3%, and the touch temperature should be normal.
7. Welding pressure should be adjusted according to material thickness and quality. After setting, adjust the welding current to the upper limit where weld spatter (irregular welds) occurs, then to the lower limit where the weld mechanically opens or tears (delamination). Finally, adjust the welding current to achieve the optimal weld quality, usually about the upper one-third between the limits.