First, the grooving is crucial because consistent R-position and size of each battery in the grooving will affect the consistency of the entire shape.
Then, when sealing, it must be sealed in one go, and the R-position of the battery casing groove must be consistent with the lower mold. The height of the sealing neck should be kept within a tolerance of 0.1mm. The outer diameter of the seal should be reduced by 0.1mm the second time.
Furthermore, the sealing mold should be made of special materials and should not be changed frequently. The sealing and grooving processes must also be perfectly matched.
Finally, it's important to note that while sealing technology standards are fixed, the operators are flexible. Therefore, training skilled technicians is crucial for successful battery sealing!