Zinc alloys and brass are commonly utilized as coin alloys. Zinc alloy is a metal alloy made up of zinc and additional elements. Aluminum, copper, magnesium, cadmium, lead, and titanium are common alloying elements used in coin production. The brass used in coin production is an alloy of copper and zinc. Ordinary brass is brass made of copper and zinc. Special brass refers to a group of alloys made up of two or more elements. Furthermore, the electroplating procedure is used in coin manufacture.
According to the production procedure, zinc alloy used to make coins is classified as cast zinc alloy or wrought zinc alloy. Cast zinc alloy is appropriate for the fabrication of metal coins due to its good fluidity and corrosion resistance.
Zinc alloy coins have the following characteristics:
1. The proportional proportion of coin creation is high.
2. Coin casting has good performance; it can die-cast precision pieces with complex shapes and thin walls, and the surface of the castings is smooth.
3. Coin surface treatment: electroplating, spraying, painting, polishing, grinding, and so on.
4. Coins that have been melted and die-cast do not absorb iron, rust under pressure, or adhere to the mold.
5. At normal temperatures, coins have good mechanical qualities and wear resistance.
6. The coin is simple to die-cast and has a low melting point, melting at 385°C.
Brass coins have a high level of wear resistance. Coins, valves, water pipes, connecting pipes for interior and outdoor air conditioners, and radiators are all frequently made of brass. Ordinary brass is brass that contains both copper and zinc. An alloy called brass is made of copper and zinc. They made coins with a great degree of tensile strength, hardness, and chemical resistance. Related product: 3d Enamel Printing Challenge Coin Brass.
The process of electroplating involves applying a thin layer of another metal or alloy to the surface of a metal coin using the electrolysis principle. It is a procedure that involves applying a layer of metal film to the surface of the coin using electrolysis to improve wear resistance, electrical conductivity, receptivity, corrosion resistance, and aesthetics. Many coins have an electroplated exterior. Coin plating is divided into three categories: barrel plating, continuous plating, and brush plating. These categories are primarily based on the batch size and size of the parts that need to be plated.
Rack plating is appropriate for products of various sizes, such as car bumpers and bicycle handlebars. Coins can benefit from barrel plating. Brush plating is appropriate for partial plating or coin repair. Acidic, alkaline, acidic, and neutral chromium solutions are used in coin electroplating. Whatever plating method is used, the plating tanks and hangers in contact with the coins to be plated, as well as the plating solution, should be versatile.