Ceramics production process

Ceramics production process is as follows:

1, practicing clay. From the mine to take porcelain stone, first manually with a hammer to the egg-sized pieces, and then use the water pestle pounded into powder, washing, remove impurities, precipitation made of brick-like mud.

The mud blocks are then blended with water to remove the slag, rubbed with both hands, or trodden on with the feet, to squeeze the air out of the mud mass and to even out the moisture in the mud.

2, pulling. The mud ball will be thrown in the center of the windlass car carousel, with the hand method of flexion and stretching put pulled out of the general pattern of the body. Pulling is the first process of molding. The first thing you need to do is to familiarize yourself with the shrinkage rate of the clay.

3, printing blanks. The shape of the mold is in accordance with the shape of the blank in the arc of the spinning into the blank, will be dried to half-dry blanks covered in the mold species, evenly pressed and patted the blank wall, and then demolded.

4, Li billet. The billet will be placed on the windlass car on the sharp barrel, turn the disk, with a knife spinning, so that the billet thickness is appropriate, the surface of the inside and outside of the clean, this is a technically demanding process. Li billet, also known as "repair billet" or "spinning billet", is a key link in the finalization of the shape of the object, and to make the object surface clean, coherent and consistent shape, neat and consistent.

Internal and external billeting is Jingdezhen porcelain production process is extremely important and superior to other kilns in the molding technology, is the formation of Jingdezhen ceramics style of a unique technical security.

5, sunshine billet. Processing molding billet placed on a wooden rack to dry.

6, carving. Use bamboo, bone or iron knives to carve patterns on the dried blanks.

7, glaze. Ordinary round ware with jiao glaze or swing glaze. Faceted or large round with blowing glaze. Most ceramic products need to be glazed before firing into the kiln. Glazing process seems simple, but is extremely important and difficult to master a process.

To achieve uniformity in all parts of the body of the glaze layer, the appropriate thickness, but also to pay attention to the different fluidity of the various glazes, is not an easy task.

8, firing kiln. First of all, ceramic products into the sagger, box is a container for ceramic products firing, made of refractory materials, the role is to prevent direct contact between porcelain billets and kiln fire, to avoid contamination, especially on the white porcelain firing is the most favorable.

9, color painting. Glaze color such as five-color, pastel, etc., is in the glaze has been burned into porcelain to depict patterns, fill color, and then into the red furnace to low-temperature firing and baking, the temperature of about 700-800 degrees.