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Ceramic Eco-cups Mugs How to overcome products Caverns?

Ceramic Mug    From:Xinxiang Ceramic Mug Manufacturers    
Ceramic Eco-cups Mugs

(1) Reason:

raw materials containing iron parts, or iron were unevenly distributed, there will be black rice points after firing. Glaze contains more iron, heavy firing in reducing iron oxide is reduced to metallic iron will form a black rice points. The point is Rongdong black rice, commonly known as egg feces.

When entering into the fusible substance fall within  mud and plaster models, or pug blank, it will cause Caverns product surface after firing.

(2) measures to overcome:

strict inspection model, the model remove impurities.

strengthen the selection of raw materials, excluding raw material iron.

prevent sagger falling slag, slurry coated with enamel sagger end, can also be exempt sagger off slag.
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