Sheet Metal Hemming, Hem Types & Processes Explained

Hemming is a sheet metal forming process where the edge is folded onto itself. Hems make a part more durable and improve its appearance.
Die hemming carried out in 2 steps, manual flattening on a press brake
Hem roll die set, 3 rollers
Roller Hemming offers high flexibility, automotive parts.

Three stages of the conventional hemming process (Ref 1)

Sheet Metal Hemming, Hem Types & Processes Explained

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Sheet Metal Hemming, Hem Types & Processes Explained

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Sheet Metal Hemming, Hem Types & Processes Explained

The hemming tool: (a) the traditional single roller; (b) an active

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Sheet Metal Hemming, Hem Types & Processes Explained

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