Do ceramics need to pay attention to the following points:

1, mud exercise

After the porcelain stone is used in the mining area, it is first broken into egg-sized pieces with a hammer, then ground into powder with a water hammer, and the impurities are removed by elutriation. When it settles, you can see the bit-like mud. Next, mix the mud with water, remove dirt, and rub with both hands to let the air in the mud out and make the water in the mud more uniform.

2. Blanking and printing

The second step in making ceramics is painting. Throw the clay ball in the center of the turntable of the pulley car, and then draw the rough shape of the blank with the flexion and extension of the technique. In fact, drawing blank is the first step of forming. If you want to draw a blank, you must first master the shrinkage rate of mud. Generally speaking, the total shrinkage of Jingdezhen porcelain clay is 18-20%.

3, drying the blank.

Put the blank on the bucket of the pulley car, then turn the wheel and cut it with a knife. Finally, the blank thickness should be appropriate and smooth inside and outside. In fact, this is a highly technical procedure. Write it down and do it. Put the processed blank on a hanger to dry.

4. Carving and glazing

The next step in making ceramics is to put a bamboo knife, bone knife or iron knife on the dry blank and carve your favorite pattern. Then glaze it with a loop device. The realization of glaze is very simple for everyone, but it is a difficult program to master. Because it must make the glaze layer of each part of the blank uniform and the thickness appropriate, it also depends on the different fluidity of various glazes.

5. Kiln burning and painting

It usually takes a day and night to put the ceramic products into the sagger and then burn the kiln, and the temperature is controlled at about 1300 degrees. At this time, everyone should also measure the temperature, check the temperature change of the kiln, and control the time of ceasefire. Finally, just draw patterns and fill colors on the ceramics.

Extended data

The wire drawing machine rotates the drawing turntable of the ceramic blank and is fixedly connected to the shaft of the ratchet wheel, which is driven by the chain, and the motor drives the chain to rotate through the sprocket wheel installed on the main shaft of the reducer. The transmission structure is a chain-ratchet transmission structure. When the ratchet is driven by the motor to rotate forward, it can pull at a higher speed.

When the motor stops rotating, the ratchet wheel can rotate flexibly in the reverse direction manually, which will not cause the linkage between the chain, the reduction box and the motor, so that the blank drawing turntable can rotate flexibly in the reverse direction manually and draw blanks at low speed at will.