What about ceramic glazing methods? What should I pay attention to when glazing ceramics?

High-pressure grouting glazed white matte, less once and then consider it is a decal or hand-painted and then burn again, the bottom is not glazed water is rough, placed on the silicon carbide plate to burn, the porcelain body and the silicon carbide plate can be directly contacted, but the glaze water is not good, the glaze water at the bottom of the ceramic should be wiped clean, and the glazed water is burned after the whole ceramic is glued to the silicon carbide plate.

Generally, depending on what shape determines how to glaze, there are spray glaze, glaze, dip glaze, glaze throwing, glaze, and so on.

Ceramic glaze is generally used in two methods: spraying glaze and glaze, and manual glazing is also used for small batches of handicrafts. The glaze is divided into high temperature glaze (1200 degrees) and low temperature glaze (800 degrees) according to temperature, and is roughly divided into color glaze and plain glaze (colorless glaze) according to color.

There are many types of ancient ceramic glaze in China, and there are different classification methods according to different standards. According to the composition of the glaze, it can be divided into lime glaze, feldspar glaze, etc.; According to the firing temperature, it can be divided into high-temperature glaze and low-temperature glaze; According to the appearance characteristics after firing, it can be divided into transparent glaze, opalescent glaze, color glaze, glossy glaze, matte glaze, crystalline glaze, glass glaze, open glaze, kiln glaze, etc. In addition, there are many glazing methods, such as dipping glaze, dipping glaze, pouring glaze, spraying glaze, swinging glaze, rolling glaze, brushing glaze, etc.

Dipping glaze. This method of glazing is that the glaze can be applied to the surface of the body very evenly, even if the shape is complex. It has the benefits of saving time and being easy to operate.

However, when using this method, a large amount of glaze slurry is required in order to immerse the whole body in the glaze slurry, so it is not suitable for large blanks.

Usually, when the whole body is immersed in the glaze slurry, it can be taken out after about 2 or 3 seconds, if the glaze is too thin. You can wait until the glaze is dry, and then do it again, but don't soak it in the glaze slurry for too long so that the glaze is too thick and form a glaze defect when firing. This method is the most commonly used method of ceramic glazing.

To glaze ceramic products, it is also necessary to do a careful study to adapt the glaze to the requirements of the ceramic body, which is the so-called glaze formula.

1. Because the glaze cannot exist separately from the body, therefore, when conducting glaze research, it is necessary to first grasp the physical and chemical properties of the body, that is, the chemical composition of the body, the expansion performance, the humidity of the body and the performance requirements of the finished product.

2. The proper coordination of the expansion coefficient of the glaze and the billet is the main condition for the glaze to fix on the surface of the billet after firing.

If the expansion coefficient of the glaze is less than that of the billet, the glaze layer peels off when cooling; If the expansion coefficient of the glaze is greater than the expansion coefficient of the blank, the glaze layer will crack when cooling, and even when excessive stress is generated between the glaze, the product may be damaged.

3. The requirements for the glaze itself must be clarified, such as whiteness, transparency, chemical stability and mechanical properties.

4. Attention must be paid to the purity of glaze raw materials. Because the impurities of the raw materials, such as iron and cobalt compounds, will have a great impact on the whiteness and dielectric properties of the glaze.

5. In the study of glaze, it is necessary to grasp a general principle: generally change the composition of the glaze to adapt to the green body rather than change the composition of the green body to adapt to the glaze. This is just as when sewing clothes, it is always necessary to make the clothes fit the human body, not to make the human body fit the clothes.

Glazing is the so-called way to fire pottery and porcelain, first of all, the blank should be fired, and then it should be taken out for glazing, and then burned.

The painted porcelain blank is rough and dull, and it is completely different after returning to the glaze, smooth and bright: different glazing techniques, and completely different effects, commonly used glazing methods are dipping glaze, glaze, glaze, spray glaze, brush glaze, etc.

The production process of ceramic products refers to the whole process from the input of raw materials to the production of ceramic products. It is the process of workers using certain labor tools and acting directly or indirectly on labor objects in accordance with certain methods and steps to make them ceramic products with use value.

In some processes of the ceramic production process, such as the aging of ceramic blanks, the natural drying process of blanks, etc. It also needs to resort to the action of natural forces. Physical or chemical changes occur in the object of labor, and the production process is the combination of the labor process and the natural process.

The ceramic body refers to the ceramic body that constitutes the product, and the glazed suna refers to the glassy dense layer that melts on the surface of the body. The thickness of the enamel is average. The role of glazing is as follows:

1.Improve the surface properties of ceramic products, make the products smoother and not suitable for staining; 2.The glaze layer can reduce the water absorption rate of the green body and prevent the penetration of liquids and gases; 3.

The glaze layer can improve the mechanical strength of the product and prolong the life of the ceramic product; 4.It can improve the chemical stability and thermal stability of products; 5.Sometimes a glaze layer is needed to cover up the undesirable color and certain defects of the green body; 6.

It can play a decorative role, such as various color glaze, matte glaze, golden sand glaze, etc., which greatly provides the artistic effect of ceramic products.

Summary. Hello Steps: Put the semi-finished glaze slurry ground by the ball mill into the stirring mill for fine processing to make it into a glaze.

Or put the glaze powder directly into the stirring mill for fine processing to make it a glaze. The time for fine processing of glaze powder in stirring mill depends on the hardness of the raw material of the formula, generally 0 5 3 hours. This process has the advantages of good glaze particle shape, fine particle size, average particle size can reach 2 microns, good gloss of finished products made of this glaze, and less bright brown eyes on the surface.

Hello Steps: Put the semi-finished glaze slurry ground by the ball mill into the stirring mill for fine processing to make it into a glaze. Or put the glaze powder directly into the stirring mill for fine processing, so that Tuanzhou becomes the glaze.

The time for fine processing of glaze powder in stirring mill depends on the hardness of the raw material of the formula, generally 0 5 3 hours. This process has the advantages of good particle morphology, fine particle size, average particle size of 2 microns, good gloss of finished products made of this glaze, and less bright brown eyes on the surface.

What raw materials are used to make the glaze?

The glaze is made of mineral raw materials (feldspar, quartz, talc, kaolin, etc.) and raw materials according to a certain proportion of only Zen (some raw materials can be made into frit first) after grinding to make glaze slurry, applied to the surface of the body.