2. The size of the hole can be calculated.

3, the height is different, that is, the gap of the flanging die is large on one side and small on the other. The mold is not assembled properly. Or uneven pressure.

4. The burr on one side is too large, indicating that the gap between the dies is large and the other side is small. The mold is not assembled properly.

5. To eliminate burrs, use wire cut to cut.

6. In order to prolong the service life of the mould, it is necessary to use the special material DC53 for stainless steel mould. The surface of the molding die needs titanium plating.