Making and Grading of Ceramic Coffee Mugs

From Xinxiang Ceramic Coffee Mug Manufacture,Ceramic mug, the traditional concept of ceramics refers to all inorganic non-metallic minerals such as clay as raw materials for industrial products. It includes various products made from clay or mixture containing clay by mixing, forming and calcining. From the roughest earthenware to the finest fine pottery and porcelain belong to its scope. Its main raw materials are silicate minerals (such as clay, feldspar, quartz, etc.) from nature. Therefore, it belongs to the category of "silicate industry" together with glass, cement, enamel, refractory and other industries.

The firing and application of ceramic mugs have a long history in China. They have various shapes, colorful, cool and smooth feel, easy to wash, and are very popular with Chinese people. The production methods of ceramic tableware are divided into three kinds: glaze color, under-glaze color and in-glaze color.

The enamel color ceramic coffee mugs are made of flower paper pasted on the glaze or painted directly on the surface of the product with pigments, and then baked at low temperature. Because the baking temperature can not reach the melting degree of the glaze, the flower surface can not sink into the glaze. Touch the glazed ceramics with your hands, and you will feel that the surface of the flower has a distinct concave and convex feeling.


The roasting temperature of the glaze-colored ceramic tea cups can melt the glaze, the pigments can sink into the glaze and be covered by the glaze layer after cooling. The surface of the products is smooth and the touch has no obvious concave and convex feeling.


Subglaze color ceramics are all decorated on the ceramic body. After glazing, they are fired at high temperature once. The flower surface is covered by glaze layer, which looks bright, smooth and smooth.

Ceramic mugs are classified as:

Level 1: The whole product has no defect, distortion or color difference, allowing a pinhole in the invisible place.

Level 2: Can have 2-3 pinholes, not obvious color difference, slightly deformed.

Grade 3 (approaching inferior product): Light distortion with obvious color difference allows shrinkage glaze of about 1-2 square MM.