My system is not decent

Chapter 1140

At present, the common glaze colors of Jianzhan on the market are still dominated by the classic three categories of "rabbit hair", "oil drop" and "yaobian".

The representative glaze colors of these Jianzhan are still the most eye-catching. The so-called classics never go out of date, which is probably what they say.

Rabbit is not as rare and special as Yaobian and oil drop, but it can become the iconic texture of Jianzhan, and it is natural.

Among them, the exquisite rabbit hair lamp can also be said to be something that can be met but not sought after.

The encounter of a good rabbit requires fate, and to appreciate a Jianzhan requires a comprehensive view of the characteristics of all aspects.

I don't judge whether a thing is good or not because of the quantity, but because of its quality, appearance and so on.

As we all know, the glaze color of Jianzhan is an important criterion to measure its value.

Whether it is a simple but full of charm glaze color, or a variety of layers of markings, it is the embodiment of its artistic value.

Although there is no uniform price measurement standard in the industry at present, the three glaze colors of "rabbit hair", "oil drop" and "yaobian" are recognized as having high artistic value.

Moreover, compared with new glaze colors, the appreciation space and collection advantages of these classic cups are more prominent.

Good-looking, in line with the aesthetics of most people, is a good thing.

And the firing of a rabbit is very difficult.

And this is the most common and easy-to-fire variety among Jianzhan boutiques.

Of course, since it is difficult, the price of fine rabbit hair cannot be lowered.

Such things are still very valuable when they are burned out again.

Rabbit hair glaze is divided into "silver rabbit hair", "gold rabbit hair" and "blue rabbit hair" according to the different performance of color.

Among them, the "silver rabbit hair" is the most valuable and the most difficult to burn.

Regarding the description of the rabbit, many literati and scholars in the Song Dynasty wrote poems and lyrics, chanted and sang.

Such as the great poet Yang Wanli's "Eagle Claw New Tea and Crab Eye Soup, Pine Wind Ming Xuetu Haoshuang.

Su Shi's "Don't startle the hare's hair spot in the afternoon lamp, beat the Chong Weng goose wine";
Rabbit Haozhan is the most popular variety in the Song Dynasty, and it is also the glaze color variety with the most handed down Song Dynasty Jianzhan.

In many large-scale auctions, rabbit hair lamps have repeatedly fetched high prices, and they are clearly on the rise. The prices of these high-quality Jianzhans have even doubled every year.

Of course, "oil drop" is one of the precious glaze colors in Jianzhan of the Song Dynasty, because the spots on the glaze surface are like boiling oil drops, hence the name.

Many fans know that Jianzhan began in 2016, when the 7800 million yuan Southern Song Dynasty Jianyao oil dripping vase was auctioned at Christie's in New York.

This oil drop bowl set a record for the highest public auction of Jianzhan in the Song Dynasty, which shows that its value should not be underestimated.

It can be said that there is a price but no market for the transaction of Song Dynasty oil dripping lamps in the market.

Since the variety of oil drop cups handed down from the Song Dynasty is relatively rare, and complete utensils are even rarer, this is also because the firing conditions for oil drops are more stringent than those for firing rabbit hair.

If the kiln temperature is low during firing, it will be difficult for the markings to form round dots;
If the kiln temperature is too high, the spots tend to flow into stripes. Therefore, under normal circumstances, the oil drop cups with excellent quality are even rarer and more popular than the rabbit hair cups.

Besides Yaobian, this phenomenon is the colored light of yellow, blue, green, purple and other colors radiated from the film on the surface of the black porcelain ware under the light, and blended together.

The obsidian transformation of black porcelain is more limited. In addition to the conditions for kiln transformation, the black and bright glaze with strong glass texture is an important factor.

This is because this kind of glaze can form an extremely thin iron crystal film under the action of special conditions during the firing process.

Without this layer of film, there will be no rainbow-like splendor when facing the light.

Yaobian is the most precious variety among the glaze colors of Jianzhan, because the three known and recognized complete utensils are the three hidden in the little devil's side.

Yaobianzhan is so precious and rare, mainly because its firing is extremely accidental.

The firing mystery of the handed down Yaobianzhan has not been solved so far. Its originality in ceramic technology and aesthetics and its extremely rare existence can be called a truly priceless treasure.

Even the modern imitation fired Yaobian lamps are very popular in the market, and it can be said to be a popular glaze color for Jianzhan.

From the market performance of Jianzhan in the past ten years, it can be seen that the auction activity of Jianzhan is getting higher and higher, and the premium rate of Jianzhan is above 100%. Many collectors at home and abroad are very fond of Jianzhan.

The glaze colors of "rabbit hair", "oil drop" and "yaobian" are all inherited from ancient methods. They are flashy but not dazzling, expensive but not obvious. Whether it is investment or collection, their prospects are quite optimistic, and they are very worth buying.

The firing of Rabbit Hair Jianzhan is relatively simple, and it is not much more difficult than the firing process of ordinary Jianzhan.

In the early stage of making the cup, it is necessary to provide the green body raw materials and glaze slurry, and the aged green body raw materials are smelted, drawn, and trimmed to obtain the green body;

The green body is put into the electric kiln for biscuit firing, and it takes 2.8-3.1 hours.

The temperature of the kiln rises from normal temperature to 290-310°C.

At this stage, the furnace door is open, which is conducive to the discharge of moisture in the green body in the form of steam;

Then close the furnace door, and after another 2.8-3.1 hours.

Wait until the temperature of the kiln rises from 290-310°C to 595-605°C, then stop the furnace.

Natural cooling is taken out to obtain the biscuit;
Glaze, pour the glaze into the biscuit cup, stay for 5-7 seconds, then turn the biscuit back into the glaze and soak for 5-7 seconds, do not apply glaze to the bottom of the cup, and let it dry;

After glazing, the body is put into a sagger and baked in the kiln chamber of the downdraft kiln.

The whole process is not much different from the firing of ordinary Jianzhan. The main thing is to grasp the temperature of the porcelain inside the kiln when it is fired.

For example, there are many details in firing beamed silver rabbit hair.

Also, brown markings burn better than silver markings?The answer is yes.

Because the material that makes up the brown spots is mainly ferric iron.

In the early stage of firing, a reducing atmosphere is needed to control the shape of the markings.

In the later stage, it can be converted to an oxidizing atmosphere to control the color of the markings.

An oxidizing atmosphere is much easier to control than a reducing atmosphere.

Therefore, the control of the shape and color of brown markings is relatively stable.

In the early stage of silver marking firing, a reducing atmosphere is needed to reduce the ferric iron to ferrous iron, and the reduction needs to be continued in the later stage.

There is a problem here. If the reduction is not enough and the ferric iron is too high, the stripes will appear gray, and the surface of the stripes will also feel dirty.

And if it has been reduced and the ferrous iron is too high, the markings will become lighter or even disappear.

So this degree is very difficult to control, making the firing of silver markings very unstable.

And as long as you know this speed, if the firing is not successful, relying on modern technology, equipment, and Chen Wenzhe's kiln firing technology, then you don't have to rely on God's will.

This is the fundamental technique of firing silver rabbit hair. In summary, it is the control of temperature and heat.

As long as Chen Wenzhe pays attention and grasps these key points, the firing of silver rabbit hair will no longer be one in ten thousand.

Even if he failed once or twice, as long as he learned the rules, he would always be able to fire one kiln or two kilns.

(End of this chapter)