Hardware refers to tools made of gold, silver, copper, iron, tin and other metals through processing and casting, which are used to fix things, process things, decorate, etc.
1. Gold piece
As we all know, gold is a valuable precious metal, worth 385 yuan per gram. Most of it is put into the national treasury by the national government for good preservation. Most of them are gold. Gold pieces are naturally used to make valuable articles. Objects cast with gold are usually jewelry, currency, substitute currency and the like, such as rings, necklaces, gold coins (ancient times), gold bricks, gold bars, etc. There are also some objects used to make celestial globe.
2. Silverware
Silver is silvery white, which is also a precious metal. In ancient China, it was used to make silver ingots or silver coins for state expenditure and daily transactions; The ancient Egyptians once used the bactericidal effect of water-soluble silver ions of silver to make silver tablets to treat wounds. Modern silver is also commonly used in jewelry processing. Silver has excellent conductivity and heat transfer performance. Common industrial silver pieces are generally parts of electronic instruments and power generation equipment, such as silver core wires.
3. Copper parts
Copper is the messenger of human civilization. The ancients used copper to make ritual vessels, such as bronze tripods and modern tools. As we all know, copper has excellent conductivity, second only to silver, but copper ore is more and cheaper than silver ore. Copper is often used to make wire cores and parts of some communication equipment and electronic equipment.
4. Iron piece
Iron is widely used, and its content is also very large in the world: the world's proven iron ore reserves have exceeded 200 billion tons! There are two kinds of iron commonly used: hematite and magnetite.
Hematite
Hematite is composed of ferric oxide, which is dark red or steel gray. It is commonly used for casting iron nails, screws, nuts, hammer heads, machine parts, etc.
magnetite
Magnetite is magnetic, also known as "magnet" and "magnetite". Magnetite is not as widely used as hematite, but it is also useful. Magnetite can be shaped into magnetite to identify objects.
5. Tin piece
The application scope of tin is not very wide. Common tin articles include tin bottle caps, tin foil, plastic bottle tin seals, etc.
The above is the category and related introduction of hardware introduced by Wanguan Hardware Electromechanical Network.
