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The Source of Defects in Enamel Coating Production

The enamel production process is very complicated and is completed by many operations. The defects of the coating film have a wide range of factors and it is difficult to find the cause. As for the quality requirements of enamel coating, it depends on the product and cannot be generalized. For defects that cannot be allowed in this type of product, perhaps other types of products are acceptable. Generally speaking, enamel coating has defects that destroy the whole, which is unacceptable, especially the defects that penetrate into the metal.

The occurrence of defects can occur in any process, which can be roughly attributed to the following:

1. Metal and metal utensils.

2. Raw materials, enamel frit and method of making frit.

3. Method of enamel coating .

4. Enameling equipment.

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