1 thought on “Where can I have regular gold processing in Shanghai”
Scott
Most of the technicians in Nanjing East Road, the old Fengxiang Yinlou gold processing in the Chenghuang Temple are mostly national senior craftsmen. Gold processing metallurgy term refers to a series of processing technologies and processes adopted to further improve the value of gold as precious metals and expand its application field as a special industrial material. This data 1. Gold is the basic form of chemical element (AU), which is a soft, golden, and corrosive precious metal. Gold is a rare, more precious and more valuable metal. Generally speaking, the world's gold is based on ounces. In ancient China, "beam" was a very important metal. It is not only a special currency for reserves and investment, but also an important material for the jewelry industry, electronics industry, modern communications, aerospace and other departments. 2. The chemical symbol of gold is AU, and financial English code is xAU or gold. AU's name comes from the story of the goddess of dawn in Roman mythology, which means bright dawn. As of October 12, 2021, the price of gold was $ 1760 per ounce. 3. You can produce a very thin gold foil. One ounce of gold can be beaten to one -4 million feet thick, with an area of 100 square feet. The ancients hammed it into thin slices and made into a temple and palace decoration. These can explain the flexibility and ductility of gold. 4. The color of gold is golden, metallic, and not easy to break down. The density is 19.3g/cm3, and the melting point is 1064.4 ° C; it has good ductility and can be pressed into thin foil. It has extremely high heat transfer and conductivity. The resistance of pure gold is 2.4P. Pure gold has good chemical resistance and is the best electroplating material. 5. As a precious metal, gold has good physical properties. "True Gold is not afraid of fire" means that gold has high chemical stability and is not easy to respond to other substances. Therefore, there is no need to worry about oxidation and discoloration. Even in the melting state, it will not be oxidized and discolored, and it is still golden yellow after cooling. High density and heavy feel. And have good toughness and ductility and good conductivity. Pure gold is bright yellow, but after mixing with other metals such as dark red gold and copper alloy and light yellow or gray -white silver alloy, the color changes greatly. Gold is easily grinded into powder, which is why gold is scattered in nature. Pure gold jewelry is also easy to wear and reduce weight. 6. In Menjiev's element cycle table, the numeral of the gold atomic order is 79, which means that the golden nucleus of the gold contains 79 protons with positive charge. At the same time, because of having half of the rules, gold has good chemical stability. In the metal market, metals such as gold and 铑, 铑, 钯, 锇, 铱, and platinum are collectively referred to as precious metals. 7. Although gold is a very soft metal, it is not as good as lead and tin. Nail printing can be drawn on pure gold. This softness makes gold easy to process. However, this is not ideal for decorative manufacturers, because it is easy to scratch the ornaments, make it lustful, and even affect its aesthetics. Therefore, gold, copper, and silver should be added when making jewelry to improve the hardness of the jewelry. It golden forging, strong plasticity, can be grinded into a transparent green gold foil with a thickness of 0.001mm. 0.5 grams of gold can be pulled into a 160 -meter -long gold silk.
Most of the technicians in Nanjing East Road, the old Fengxiang Yinlou gold processing in the Chenghuang Temple are mostly national senior craftsmen.
Gold processing metallurgy term refers to a series of processing technologies and processes adopted to further improve the value of gold as precious metals and expand its application field as a special industrial material.
This data
1. Gold is the basic form of chemical element (AU), which is a soft, golden, and corrosive precious metal. Gold is a rare, more precious and more valuable metal. Generally speaking, the world's gold is based on ounces. In ancient China, "beam" was a very important metal. It is not only a special currency for reserves and investment, but also an important material for the jewelry industry, electronics industry, modern communications, aerospace and other departments.
2. The chemical symbol of gold is AU, and financial English code is xAU or gold. AU's name comes from the story of the goddess of dawn in Roman mythology, which means bright dawn. As of October 12, 2021, the price of gold was $ 1760 per ounce.
3. You can produce a very thin gold foil. One ounce of gold can be beaten to one -4 million feet thick, with an area of 100 square feet. The ancients hammed it into thin slices and made into a temple and palace decoration. These can explain the flexibility and ductility of gold.
4. The color of gold is golden, metallic, and not easy to break down. The density is 19.3g/cm3, and the melting point is 1064.4 ° C; it has good ductility and can be pressed into thin foil. It has extremely high heat transfer and conductivity. The resistance of pure gold is 2.4P. Pure gold has good chemical resistance and is the best electroplating material.
5. As a precious metal, gold has good physical properties. "True Gold is not afraid of fire" means that gold has high chemical stability and is not easy to respond to other substances. Therefore, there is no need to worry about oxidation and discoloration. Even in the melting state, it will not be oxidized and discolored, and it is still golden yellow after cooling. High density and heavy feel. And have good toughness and ductility and good conductivity. Pure gold is bright yellow, but after mixing with other metals such as dark red gold and copper alloy and light yellow or gray -white silver alloy, the color changes greatly. Gold is easily grinded into powder, which is why gold is scattered in nature. Pure gold jewelry is also easy to wear and reduce weight.
6. In Menjiev's element cycle table, the numeral of the gold atomic order is 79, which means that the golden nucleus of the gold contains 79 protons with positive charge. At the same time, because of having half of the rules, gold has good chemical stability. In the metal market, metals such as gold and 铑, 铑, 钯, 锇, 铱, and platinum are collectively referred to as precious metals.
7. Although gold is a very soft metal, it is not as good as lead and tin. Nail printing can be drawn on pure gold. This softness makes gold easy to process. However, this is not ideal for decorative manufacturers, because it is easy to scratch the ornaments, make it lustful, and even affect its aesthetics. Therefore, gold, copper, and silver should be added when making jewelry to improve the hardness of the jewelry.
It golden forging, strong plasticity, can be grinded into a transparent green gold foil with a thickness of 0.001mm. 0.5 grams of gold can be pulled into a 160 -meter -long gold silk.