hemming refers to curling the edge of sheet metal parts. this kind of hemming will be used in many sheet metal processing factories, just as the safety tool cabinet must be curled. Crimping can improve the strength and rigidity of the structure, thus making the structure light and firm. There are many ways of crimping, including wire crimping and hollow crimping. So how to carry out this kind of curling. I told you what to do with the lower sheet metal processing factory.

Before crimping, everyone must measure the length of the line and estimate the curl length of the printed paper, which is also to ensure the quality of the curl. The edging operation can only be carried out after the estimation is completed. The following are the main operation methods:

1. draw two curl curves on the blank: L1 = 2.5 * curl diameter L2 =(1/4?1/3)* L1

2. place the baffle on the platform (or square iron, slide rail, etc.) so that the exposed platform specification is equivalent to L2, and press and hold the baffle with your right hand, then tap the edge of the platform with a hammer. Bend it to 85±90 ° with the right hand.