The ancients' definition of kiln change is more broad, for example, the "Compilation of Barnyard History" believes: "Porcelain has the same quality, so it becomes heterogeneous, the same color, then it becomes heterochromatic." The combination of water and soil, which cannot be added by human ingenuity, is called kiln change. ”
In the "Guide to Antiquities" and "Tao Cheng's Chronicle", the glaze color change of "renqiao" is further added to the "kiln change".
Speaking of kiln changes, we have to start with a poignant story. In ancient times, jun porcelain was a special utensil of the royal family, and once the emperor ordered an old kiln worker to burn a jun porcelain dragon bed, which was fired within a time limit, and the head would be beheaded beyond the time limit.
But why is the dragon bed so big? The old kiln worker's many attempts ended in failure, and seeing that the deadline had arrived, the old kiln worker knew in his heart that there was no way to survive if he could not burn the dragon bed, so he jumped into the fire.
When people opened the kiln door, they were surprised to find that the dragon bed had been burned, and the glaze was extremely new and had never been seen before. Later, when people fired jun porcelain, they said that the kiln worker secretly blessed it in order to burn the world's treasures, and the kiln workers called this phenomenon "kiln change".
Kiln change refers to the phenomenon that the glaze color changes in the process of high temperature firing of porcelain. For example, the copper red glaze turns red in the wood kiln, and in the oil kiln or coal kiln, it becomes purple blue or gray-black, and the firing material and the carbon dioxide and carbon monoxide content in the kiln cause the oxygen content to fluctuate and eventually form a difference. Different firing processes affect the atmosphere in the kiln, and the colors presented are different.
Represented by the utensils burned in the Junguan kiln, some utensils are purple and red, some are blue and red, and the color changes are rich, and they are most famous for their azure, moon white, rose purple, begonia red, etc.
At the same time, the glaze is full of earthworm mud patterns and various filamentous rhyming patterns and other unexpected changes, even if the same product will appear a variety of different color patterns, and form a magical artistic picture, giving people a kaleidoscopic and mysterious feeling. This kiln transformation art of Jun porcelain is unique among the five famous kilns of the Song Dynasty and is loved by the world.
The phenomenon of kiln transformation of jun porcelain is closely related to the use of unique mineral raw materials, different tire textures and shapes, the chemical composition of glaze, the processing of glaze, glazing process and firing process.
The firing process of jun porcelain is different from others, it is fired twice, the first is vegetarian firing, then the glaze color is applied, and then the second is kiln firing. Technical difficulty is relatively large, a little careless, it is difficult to achieve the desired effect, coupled with its glaze color is naturally formed, non-artificial depiction, so the glaze color of each piece of jun porcelain is unique, so there is "jun porcelain without pairs, the kiln becomes unmatched", "into the kiln one color, out of the kiln ten thousand colors" and so on to describe the beauty and preciousness of the jun porcelain kiln.
The reason why the Jun kiln is so highly praised is mainly because it has made great contributions to the high-temperature kiln color-changing glaze, which is a great innovation of the working people in China in ceramic firing, it is a precious cultural heritage of our country, and it also occupies an important position and enjoys a high reputation in the history of the development of ceramics in the world.
Article source Jun kiln Jun porcelain net.
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