People's praise of gold often also invisibly reflects the special crafts of gold, such as: "Golden Branches and Jade Leaves", "Golden Wall Brilliance", which describes an important variety of gold technology - gold foil. First, the gold foil process Gold foil is a thin piece made of gold. Gold has good ductility and plasticity. One or two (31.25 grams) of pure gold can be hammered into a gold foil with a thickness of 16.2 square meters and a thickness of 16.2 square meters. Gold is stable in nature, permanently discolored, resistant to oxidation, moisture, corrosion, mildew, insect bites, and radiation. Gold foil made of gold has a wide range of uses. The ancient method of gold foil is to first purify the gold, and then beat it with a thousand hammers to become a gold leaf with an area of ​​2.5 square centimeters, and then sandwich it in a black gold paper smelted with kerosene, and then hammer it by hand for 6-8 hours. The leaves are foiled, the area is about forty times that of the gold leaf, and then cut into squares. Gold foil is a traditional Chinese handicraft. It originated from the Eastern Jin Dynasty and matured in the Southern Dynasties. It is popular in Song, Qi, Liang and Chen dynasties. Today, the Longtan area of ​​Nanjing (Jiangning) is the birthplace of gold foil. It has been passed down for nearly 1700 years. According to research, the inventor of the gold foil is an alchemy family--Ji Jin Jurong, Ge Hong, which can also be seen that the origin of gold foil is inextricably linked with alchemy. The inscription on the Tomb of the Tomb of Dongling in Beijing is a typical gold foil product. The gold foil produced by modern technology is the crystallization of China's ancient gold-making technology and modern high-tech. The traditional process of making gold foil is a special processing of more than ten processes, such as gold strips with a gold content of 99.99%, which are subjected to polyester, hammering and foil cutting, so that it is golden in color, bright and soft, light as a feather, thin as thin. Wings, less than 0.12 microns thick. Standard gold foil should be uniform in thickness, neatly angled, free of cracks and visible trachoma. The model of gold foil is calibrated with gold content. For example, the gold content of No. 98 gold foil is 98%, and the standard is 98±1. The gold content of 77 gold foil is 77%, and the standard is 77±1. Gold foils commonly found on the market are 93.3 x 93.3 square millimeters, 83.3 x 83.3 square millimeters, and 44.5 x 44.5 square millimeters. China has a long history of making gold foil. There is gold foil unearthed in Yinxu, Anyang, Henan. The thickness of gold foil unearthed from Yinxu is only 0.01±0.001 mm. The Eastern Zhou Tomb of No. 1 Langjiazhuang, Linyi, Shandong Province, is embossed with gold dragonfly on the gold foil unearthed. The Han tomb of Mawangdui, Changsha, Hunan, is unearthed with gold foil or gold dust. According to the example of the Qing Dynasty Ministry of Industry and He Mingyuan, the gold foil has the distinction of “red gold†and “goldâ€. Since the late Qing Dynasty, there have been many titles such as “Kujin Foilâ€, “Su Da Chi†and “Tian Chi Jinâ€. "Cold gold foil" color is red, gold is the best color, Zhang Zi is also the largest, about three inches and three squares. "Su Da Chi" is yellow in color, and the color is poor. Zhang Zi is about two inches and eight square feet. The color is light and whitish, called "Tian Chijin". The color is like gold, but it is actually called "golden foil". Nowadays, the production of gold foil has been integrated into modern technology. The auxiliary materials used (such as Wujin paper) and equipment have been greatly improved, and the output and quality have been greatly improved. Modern technology has carried forward the traditional gold foil process and developed new gold foil varieties. For example, the high-tech laser shallow carving method is used to engrave and bronze the gold foil with a purity of 99%, which has the value of preservation, collection, commemoration and appreciation. Second, the gold process The gold-plating process has also been circulated in China for a long time. The special materials for gold paste are: gold, silver, copper and aluminum foil. The traditional gold decoration technique is to clip the gold foil with bamboo pliers and stick it on the sticky foundation. Used for decoration on fabrics, leather, paper, various utensils and building surfaces. Sticking to the base of gold, brushing a layer with fish glue glue, this is the ancient method of Tang and Song Dynasties; using the tree planting liquid is the method of Guanzhong area. Soymilk mucilage, garlic juice, and rock sugar water are all available. Generally use garlic liquid on the cloth, on the wall and on the wooden board, use "golden rubber", and use "leaching powder" on the line. The technique of leaching powder and sticking gold was first seen in the Beiwei murals at 263 Grottoes at Mogao Grottoes in Dunhuang. The gold paste in the Tang Dynasty has become commonplace. The gold in the Song Dynasty was exhausted and there was a ban on sales. "Song Shi. Ren Zong Ji": "The first year of Kangding (1040) August, the Wuxu, banned with gold foil decorated with Buddha statues." In the Yuan, Ming and Qing dynasties, gold was mainly used for architectural decoration. "Heavenly Creations": "Where the color is to gold, it is precious and precious for human beings, so it is artificially made into foil and then applied." Crochet Nylon Spandex Lace Trim Scallop Edge Lace,Nylon Stretch Trim,Scallop Egde Lace Trim,Crochet Nylon Spandex Lace Trim Shaoxing Jiuyang Textile co.,ltd , https://www.textilejy.com.jpg)
November 11, 2020