How To Hemming And Rack For Enamel Cookware

How to enamel the edge of enamel cookware?

The process in which the powder edge of the enamel casting is attached to the hemming plate, belt or wheel to make it evenly coated with a layer of edge enamel slurry is generally called hemming. It can be done mechanically or manually. The hemming is required to be neat and even, and the enamel edge enamel covers the cover coat between 0.5 and 1 mm; at the same time, defects such as lace, bumps, and disjoint are not allowed.

Different enamel cookware products have different hemming methods. The specific operation requirements and characteristics are as follows:

Hemming Method

Applicable Products

Contact Angle

Operating Requirements


Hemming groove board

Enamel pots, enamel plates and dishes


Stir the edge enamel frequently, pour the hemming board frequently, do not roll the edge on the traces of hemming

the edge is uniform, and the bottom edge of the edge is not easy to roll

Hemming flat board

Enamel buckets, enamel cups, enamel pots


Same as above

Same as above

Hemming wheel

Enamel pots, enamel plates, enamel dishes


Stir frequently and add enamel slurry

Thin edge, thick bottom edge

Mechanical hemming

Enamel pots, enamel plates, and enamel dishes


Frequently add edge enamel slurry, and often adjust the volume and consistency of edge enamel slurry

Same as above

Mechanical hemming

Enamel cups, enamel pots


Same as above

The edges are even, and the bottom edge is not easy to roll

The operation of placing the rolled enamel powder on the firing rack is called a swing rack. Swing frame requirements: pick and place the powder blanks to be light, stable, flat and accurate, and avoid damaging the edge enamel and bumping the powder blanks. The swing frame should be straight to avoid defects such as overturning, deformation and top pit.