Qing Dynasty is a peak of the development of porcelain-making technology in our country, whether it is the modeling style, or the glaze variety, are very numerous, new products emerge in endlessly, the furnace Jun glaze is a new variety of porcelain in Jingdezhen kiln during the Yongzheng period of the Qing Dynasty. Furnace Jun glaze is imitation Jun kiln purple red spot made of low-temperature color glaze, first of all, the porcelain blank is caused by high temperature firing, and then glazed on the fired plain porcelain, and then baked twice in the 800 low-temperature furnace, so it is named "furnace Jun glaze".
According to the record of "Qing Palace Office Work Clearance", on the sixth day of February in the tenth year of Yongzheng, Emperor Yongzheng issued an order to put the furnace glaze plum bottle with a rosewood seat, which shows that the furnace glaze is in line with the appreciation taste of the Yongzheng Emperor and has become a royal weapon. In Tang Ying's "Tao Cheng Chronicle Tablet" in the description of the furnace glaze as "the color between the Guangdong kiln and the Yixing glaze, and the pattern flows through", it can be seen that the furnace glaze is an important variety of imperial porcelain fired in the Tang kiln, and has a noble position in the Qing Dynasty in a wide variety of glazes.
The characteristic of Lujun glazed porcelain is that the glaze presents a unique kiln effect, and the glaze color is rich and colorful, including blue, purple, green, red and other colors, forming a unique artistic style. The glazing method of furnace glaze porcelain is to blow the jadeite color base glaze (pastel pigment colored with copper oxide) on the blank, and then blow the Guangcui color glaze (pastel pigment colored with cobalt oxide) on the bottom glaze, the two color glazes are smelted by kiln fire, blend with each other, and form vertical stripes of different shades and lengths on the glaze surface, some are curved and some are vertical. The glaze presents a flaky pattern of mountain clouds and spots mixed together, and the layers are neatly arranged. After firing, the purple red, blue, green, moon white and other colors in the glaze are melted together, dazzling and ever-changing.
The furnace glaze is the most refined in the Yongzheng and Qianlong periods, and the later dynasties have been fired, but the quality is far from the two dynasties.
Yongzheng Dynasty, the glaze is mixed with powder, so the glaze thickness is opaque, the glaze has a strong sense of flow and has fine flakes, and there is a slight concave and convex feeling with the flow of stripes. The red in the glaze is not gorgeous, the red is purple, like the color of the freshly ripe sorghum ear, so it is often called "sorghum red", which is the most important basis for the Yongzheng and early Qianlong dynasties.
In the Qianlong Dynasty, the glaze of the early products still had the characteristics of "sorghum red" in Yongzheng, and the glaze gradually showed blue, green, moon white stripes and vertical small patches in the later period. The glaze is thick, and the sense of flow is weaker than that of Yongzhengchao.
The glaze of Jiaqing Dynasty has a more unsmooth sense of flow, and the color is blue. After Daoguang, it is no longer a natural kiln change, the glaze is thinner, there is no hypertrophy, the glaze water flow traces are not obvious, the moisturizing feeling is not strong, and there is no crystalline luster. The glazed circles are like strokes, called caviar. During the Daoguang period, the caviar pattern was uneven in size and not very dense. In the late Qing Dynasty, the roe was dense and evenly arranged in size.
The above is some basic knowledge of furnace glaze, I hope it will be helpful for everyone to collect and appreciate furnace glaze utensils.