What does gold plating mean?

"Forging" has two meanings. The first one means "gold with good fineness", and the second one, like "liú", means gold plating. So the correct pronunciation should be "liú".

"Gilding gold" is a craft. To put it simply, gold and mercury are mixed in a certain proportion and then heated. When heated to a certain temperature, mercury will evaporate automatically, leaving only a thin layer of gold, which looks magnificent.

Five parts of "gold plating" technology:

1, imitation of "golden hoop". Prepare a copper rod, dip it in mercury and dry it to form a "golden rod".

2. Gold. Dissolve gold with mercury.

3. apply gold. That is, smearing gold mud on the utensils.

4. open gold. Bake the utensils with a metal rod and charcoal fire to evaporate the mercury in the gold mud, leaving gold.

5. calendering. Use agate or jade to polish and press the gold-plated surface repeatedly to make it flat and smooth.

In our daily life, the most commonly used "gilding" technology should be on Buddha statues and decorations. Of course, there are also a large number of "gilded" cultural relics in the museum.

Gold-plated Buddha Source: Ancient Kannonji WeChat

Gold-plated, Silver-plated, Copper-plated, and Bamboo-node Smokers Photo source: Weibo, Shaanxi History Museum.

The technology of "gilding gold" has been carried forward since the Warring States period and has been circulating for a long time. While lamenting the grandeur of "gilding", we are also impressed by the wisdom of our ancestors.

"Gold plating" appeared in ancient times. In order to improve efficiency, with the maturity of electrochemical science, a new technology-"electroplating" came into being.

Although the efficiency is improved, electroplating technology will pollute water resources. In addition, shipbuilding, aerospace, military, energy and other industries have higher and higher requirements for parts, so it is inevitable to pursue a more wear-resistant and corrosion-resistant material.

In order to meet the needs of high-speed mass production, high-speed laser cladding technology was born. The material on the surface of the part is melted and coated by laser, and then sprayed with gold powder to form an extremely thin metallurgical layer.

High-speed laser cladding technology can improve the speed and quality at the same time, and the surface of parts is smooth, flat, dense and defect-free, so it can work on curved surfaces or even complex curved surfaces. And widely used in coal, metallurgy, ships, automobiles, aerospace and other fields.