Xinxiang Ceramic Mug Manufacturer, Ceramic mug production process, clay through a number of processes (practicing clay, billet molding, drying and billet, plain firing), ceramic mugs will enter the “make-up” stage. Ceramic mug beautification is mainly through the glaze and flower paper to achieve. Custom ceramic coffee mugs, buyers of ceramic factory mentioned one of the main needs is the color and picture. The color of the mug is achieved through the glaze, and the picture of the ceramic mug is done through the flower paper. Today, Xinxiang ceramic factory first to tell you about the glaze. What is glaze? The color of the cup requested by the customer, Xinxiang Ceramic Mug Manufacturer is achieved through which process?

1. What is the glaze? How to make it?
1.1 Glaze is like “paint”.
The glaze is a paste-like liquid before it is put into the kiln to be fired. Ceramic mugs coated with glaze, put into the kiln firing, it becomes a smooth layer of the surface of the mug “glass layer”. The purpose of the glaze is waterproof, beautiful and durable.
1.2 How is the glaze made?
a. Matching raw materials: according to the color requirements of the custom ceramic mug, ceramic factory will find out the corresponding color value. Xinxiang ceramic factory with 24 years of production experience will choose the right formula. We prepare the raw materials (including: quartz stone, feldspar, kaolin and other materials) according to the formula.
b. Powdering: The ceramic factory pours the mixed raw materials into a ball mill (a barrel-shaped machine with many small stone balls inside). Add water and grind into a fine powder slurry (like soybean milk, grind until there is no graininess to the touch).
c. Sieve: Use a fine mesh to sieve out large particles to ensure that the glaze paste is fine.
d. adjust the concentration: in accordance with the recipe, add water and adjust to a little thicker than milk state (too thin to hang the mug, too thick will crack).
e. Storage glaze paste: loaded into a vat, regular stirring to prevent precipitation.
1.3. Glaze storage precautions
a. Anti-drying: the bucket holding glaze paste should be sealed, otherwise the surface caking (like soybean milk put for a long time peeling).
b. Anti-freezing: glaze paste can't be put outside in winter, glaze paste will be stratified after freezing.
c. Shelf life: glaze paste in sealed and room temperature, do not store more than 3 months, otherwise it will deteriorate (glaze paste will smell or hard lumps).
d. Safety: glazes containing lead and cadmium should be labeled separately.

2. the role of each component in the glaze
2.1. Quartz (sand): glaze raw materials account for the most quartz, can account for more than half. Quartz is the glaze “skeleton”, it is in the glaze after firing, can make the glaze hard.
2.2 Feldspar: it is a natural “accelerant”, it allows the glaze to melt at low temperatures, its main role is to reduce the melting point of the glaze.
2.3. Kaolin: It acts as a binder, which allows the glaze to stick firmly to the mug.
2.4. Metal Oxides: The color of the glaze is determined by the metal oxides. The color of the glaze varies according to the amount of metal oxides added. For example, if iron oxides are added to the glaze, the glaze takes on a yellowish-brown color; if cobalt is added, the glaze turns blue; if copper is added, the glaze turns green.
2.5. opalizing agents: for example, tin dioxide, which whitens and makes the glaze opaque, giving it a white color.

3. The difference between high temperature glaze and low temperature glaze
Customized ceramic coffee mugs, ceramic factory will habitually ask buyers: “need to be made into high temperature glaze ceramic cups, or made into low temperature glaze ceramic cups?” Many buyers for high temperature glaze and low temperature glaze is not clear, the difference between the two and the advantages and disadvantages are not understood. Then, Xinxiang ceramic factory to make both clear.
3.1. High-temperature glaze, is the firing stage, which requires a higher temperature (1280 ℃ or more) for firing. It requires a higher temperature, then the more energy consumed in the firing process, so the cost of production is also high. This high-temperature glaze is more wear-resistant and environmentally friendly (it does not contain lead or chromium). Ceramic mugs with high temperature glaze last longer and are safer. However, high-temperature glazes cause many colors to be less vibrant than low-temperature glazes because of the high temperature.
3.2 Low-temperature glaze refers to the firing stage, only need a relatively low temperature (about 800 ℃) can be made. Low-temperature glazes require low temperatures, so less energy is needed in the firing process, and the production costs are lower. This low-temperature glaze guarantees the vividness of the colors and takes less time to produce. However, this kind of low temperature glaze has poor abrasion resistance and is more easily scratched.

4. How to judge the quality of glaze
4.1. After the sample coated with glaze in the test firing, through the test finished glaze, to judge the quality of the glaze. Sample glaze surface if smooth, no cracks, no pinholes, then the quality of this batch of glaze paste is qualified. On the contrary, this batch of glaze paste is unqualified.
4.2. by knocking the sample, by virtue of the sound to determine the quality of the glaze. Tap the sample to listen to the sound, if the sound is crisp, then you can judge the adhesion of the glaze is qualified. If the sound is muffled, then the adhesion of the glaze is not qualified.
4.3. Immerse the sample in an acid solution for 24 hours. After immersion, watch for changes in the glaze. If there is no change, the glaze paste is qualified, and vice versa.

5. Glaze precautions
5.1. formula: the same color, different factories, the production of ceramic mugs, the color is different. Mainly is reflected in different formulas, formulas and personnel is a qualified, stable ceramic mug factory, the cornerstone of survival.
5.2. Inspection: After the glaze paste production is completed, it should be regularly stirred and inspected. Prevent the glaze paste from deteriorating and settling.
5.3. Firing: high-quality finished ceramic mugs, not only rely on good quality glaze paste, in the firing, but also need to strictly control the firing process. Otherwise, the glaze will not be bright; low temperature glaze over temperature will flow glaze.