My system is not decent

The avenue is as simple as possible, and the simpler things are, the harder it is to do them well.

Just like the small cup like Jianzhan, especially when drawing the billet, it needs to be well thought out, and the best shape of the container needs to be drawn out in one go.

If it can't be formed once, it will be troublesome if it needs to be drawn twice.

Often a slight movement at this time will deform the embryo and make it even more ugly.

Therefore, after the first drawing of the embryo, no matter whether it is good or bad, it is better to start sharpening and trimming the embryo, rather than the second drawing.

That is to say, after the blank drawing is completed, it can be glazed only after blank trimming, drying, biscuit firing, blank selection, blank washing and other processes.

The glaze water for firing Jianzhan must be collected from glaze mines in designated locations rich in high-iron substances. Any glaze mines collected from other places will never be able to burn the texture of Jianzhan.

Therefore, if you want to make a qualified and beautiful Jianzhan, the choice of materials is very important.

There are two kinds of materials used to build the lamp, fetal soil and glaze.

The fetal soil of Jianzhan contains three kinds of local soils, red soil, clay and high-temperature soil.

There are also these three kinds of soil in many other places in our country, but the soil that is suitable for firing Jianzhan is only the soil within the local Shuiji range in Jianyang, which cannot be artificially added.

Soil selection also needs to go through some tests before finding the right one.

Soil selection and mineral selection are the basic skills of porcelain making, but this basic skill is definitely not much that can be done well now.

In the process of making Jianzhan, the selection of soil is particularly important. It is best to choose clay with a high iron content in Shuiji. The porcelain ore is taken back and stacked in the open air to allow it to weather naturally.

Then there is the processing of the mechanical reels/water reels, and the different technological requirements lead to subtle changes in the firing process.

Some raw materials need to be processed by machine or water to make the quality of Jianzhan higher.

Then there are the ingredients, according to different mud materials and proportions.

After that, it is crushed in a pestle, that is, the prepared mud and glaze are put into a mechanical pestle or a water pestle for crushing.

After processing, it is to take the material.

After the machine has been running for a certain period of time and the thickness of the mud or glaze is moderate, it can be taken out.

The sludge treated in this way also needs to be filtered.

The mud material is sieved and then enters the slurry pool, and the glaze material is sieved and then enters the glaze pool.

The next step is staling. The filtered mud and glaze need to be stored for a certain period of time, which is beneficial to the subsequent steps.

The raw materials needed at this time are basically in the forming stage.

Of course, there are still some steps, such as mud dehydration, these are small details, if not counted as a process, it is also possible.

However, Chen Wenzhe believes that details determine success or failure, so he will carefully grasp any small details.

It can be said that every step is careful to achieve perfection!

Just like dehydration, the stale mud is still a "mud" with water at this time, and it needs to be dehydrated to become a moderately soft and hard mud.

Here, moderate softness and hardness are very important, because in this way, it is beneficial to the subsequent mud training and embryo drawing.

Besides practicing mud, practicing mud can be done by machine or by hand.

Machine mud is practiced using a vacuum mud machine, and manual mud is practiced by hand.

The purpose of mud training is to remove or minimize the excess air in the mud and make the mud uniform.

At this time, after the mud training is completed, the embryo can be drawn, but before the embryo is drawn, it is better to knead the mud first.

This step of kneading the mud is to knead all the mud into a suitable size of mud.

Only in this way can it be beneficial to pull the embryo. At this time, it is just a mud, how many steps have been carried out?

Big and small, they can be classified into one big step, which is practicing mud, or mixing mud.

However, there are several steps to actually do it, and you must pay attention to it, and you can't do it casually.

Because if the raw materials are not handled properly, no matter how good your craftsmanship is, you will not be able to produce good works.

Therefore, kneading the mud well is the casting.

This Chen Wenzhe does too much, that is, put the mud after kneading on the rotating wheel, and pull out the pre-planned shape by hand.

This step requires extremely high craftsmanship from the craftsman, and this step is the key to the quality of the vessel.

It's just that the shape of the Jianzhan is the same. Although there are many changes, it is only the shape and size of the mouth.

With Chen Wenzhe's skill, it can be changed at will, and it can also be said to make small teacups of various shapes as one likes.

After the drawing is completed, the blank needs to be trimmed.

To make any kind of high-quality porcelain, embryo trimming is essential, because it is a step of excellence.

The blank drawn out is the blank, which is only the basic shape.

If you want to get a better work, you must turn the wheel on the machine wheel to spin the blank into a uniform thickness, regular and beautiful shape.

At this point, if you want to keep money or engrave a seal, you can do it.

Generally, the bottom of the ring foot and other parts are engraved with the signature of the craftsman, or other seals and characters.

Finally, the green body is dried and ready for biscuit firing.

There are many things to pay attention to during the bisque firing process.

The first is the inspection of the green body. In order to avoid unnecessary biscuit firing, the green body needs to be inspected before entering the kiln for biscuit firing, and only those who pass the test can enter the kiln.

Then there is the shed board, which needs to be leveled and stabilized with pillars, and the height and shelf layer of the shed board must be adjusted according to the size of the green body.

The next step is to install the kiln. At this time, the qualified blanks can be classified and installed on the shed.

After the kiln is installed, the kiln is sealed and the kiln is fired.

Bisque firing has a heating curve, operate according to this, and the fire can be stopped when the temperature reaches 750c.

After the cessation of fire, there is cooling. Just after the cessation of fire, the temperature of the green body is still very high. At this time, a cold kiln is required to prevent the green body from cracking.

The kiln is opened only after the kiln temperature has completely cooled down.

At this time, the kiln temperature is cooled to a suitable temperature, and the kiln can be opened to take out the biscuit.

The blanks taken out need to be inspected one by one, and the unqualified ones should be eliminated.

And this is just making plain embryos, that is, fired unglazed utensil embryos.

The plain embryo has been successfully fired without any flaws. Only qualified plain embryos can be selected at this time to be glazed.

And the process of glazing is not completed in one step.

There are also some processes here, at least four steps.

If you count the glaze, it is five steps.

The process of glaze matching can be done in advance, because Jianzhan is a single-color glaze, and its formula is made of natural iron glaze ore, which is made by adding plant ash, crushing and beating well.

Uranium ore is a kind of local mountain stone in Jianyang. This ore is the most important colorant for the glaze of Jianzhan and the most important factor for the formation of patterns on Jianzhan.

Another raw material is plant ash, the main component of which is the ash left after burning firewood in rural earthen stoves.

Only qualified glazes can be used for water application, and qualified bisques can be dedusted and watered to facilitate the close bonding of glaze water and biscuits.

The second is to adjust the glaze slurry, stir the glaze slurry evenly, and use the concentration meter to measure the optimal concentration.

The third is to clean the glaze water, and use a basket to remove impurities in the glaze slurry to prevent the glaze water from sticking to sand, dust and other impurities, which will affect the degree of bonding between the glaze water and the biscuit.