Although the full glaze products have already exploded in the ceramic industry, many ceramic companies have the ability to produce their own full glaze products, but the full glaze products produced by different companies are both in quality and in color. There is a world of difference. The texture and color of the all-glazed glaze products produced by the production technology companies are very realistic, the brightness and wear resistance are relatively high, and the texture of the full-glaze products produced by some immature enterprises is not clear and wear-resistant. The degree is not high enough, and the product decoration effect is not strong. According to industry sources, this is mainly caused by differences in glaze and process control. Therefore, the reporter consulted some senior industry professionals on the upstream supply and process control of the full glaze products, and worked with readers to understand the current development of the production process of the full glaze.
Raw materials determine the quality of the brick
The choice of raw materials for full glaze is equally important. The glaze determines the quality of the brick surface, so the raw material determines the quality of the brick. According to Huang Jianwei, deputy general manager of sales of Foshan Chuanlong Ceramics Co., Ltd., the raw materials for glazing are mainly kaolin in Guangdong. Because the kaolin in Guangdong is more viscous and has higher bonding, the quality of ceramic products produced is better. The brick body is more stable. It is understood that the distribution of raw materials has also become an important factor hindering the production of all-glazed glazes in other producing areas. Since the kaolin in other producing areas is less than that in Guangdong, and the processing techniques in other producing areas are relatively backward, other producing areas are currently There are very few products that produce full glaze. Huang Jianwei added that in addition to seeing the production of all-glazed glaze products in the Zibo production area in the second half of this year, there are only a few manufacturers producing them, and other production areas have not produced all-glazed products.
It is understood that at present, ceramic enterprises produce two kinds of adobe products, which are antique bricks and polished bricks. However, according to Huang Jiancui, deputy general manager of sales of Zundao Building Materials Co., Ltd., the use of antique slabs is more suitable for the use of antique slabs because the fineness of antique bricks is better, and it is not easy to be deformed during the second firing, while polished tiles are A little inferior, but many companies in the current use of polishing bricks for the production of full glaze in order to save costs, so the final product is less effective and prone to deformation.
Glaze is the key
Glaze is the core of the whole glaze product. The quality of the glaze determines the quality of the glaze product. No matter how beautiful the pattern is, how perfect the polishing process is. If the glaze has insufficient transparency and wear resistance, the product The performance will be greatly reduced. According to Ke Limin, director of the Ceramics Marketing Department of Jianyi, the current glaze is mainly divided into imported glaze and domestic glaze. The imported glaze is mainly from Italy and Spain. The imported glaze has higher transparency, brightness and hardness. The glazed surface is more wear-resistant and more dialysis. Ke also added that Jane-Im is using imported glaze. Currently, imported glaze is 28,000 yuan/ton, while domestic glaze is only 15,000 yuan/ton. Therefore, the use of imported glaze greatly increases the cost of production.
The reporter learned that the domestic enterprises producing glaze mainly include Yuhong, Dao, Defeng, Dahong glaze, Daewoo and so on. The glazes produced by these companies have reached a certain level, and the gap with imported glazes is getting smaller and smaller. Therefore, many well-known domestic antique brick companies will choose domestically produced glazes for the production of full glaze to save production costs.
According to the reporter's information, the chemical composition in the glaze is mainly composed of potassium, sodium feldspar, calcite, quartz, wollastonite, kaolin, alumina, etc., and the specific formula and ratio are different for each glaze manufacturer. This leads to the uneven quality of the glaze produced by each company. According to Huang Jianchrome, deputy general manager of marketing of Foshan Zundao Building Materials Co., Ltd., there is a very professional measuring unit in the whole glaze, called the expansion coefficient. The expansion coefficient of the glaze exceeds the rated range, so the tensile force generated during the firing process will be strong, resulting in deformation of the brick body and cracking of the glaze, and the expansion coefficient has a great relationship with the formulation of the glaze, and the glaze The quality of the material formula determines the quality of the full glaze product. Therefore, each glaze company does not mention its own formula and mix, so as to avoid plagiarism.
How much production capacity depends on the production line
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