Automatic Gold Coin Making Machine

The refinery must produce gold - or a gold alloy - ingots to the required coin specification. Ingots or bars are then pressed between rollers to form sheets. The sheet metals are then rolled into coils, and if intended for coins, these sheets will be cut in 'blanks' in preparation for minting.Minting, coining or coinage is the process of manufacturing coins using a kind of stamping, the process used in both hammered coinage and milled coinage.A gold coin is a coin that is made mostly or entirely of gold. Most gold coins minted since 1800 are 90–92% gold (22‑karat), while most of today's gold bullion coins are pure gold, such as the Britannia, Canadian Maple Leaf, and American Buffalo.Today's coins are made from metals such as nickel, copper, and zinc. Instead of using one metal to make a coin, multiple kinds of metal are pressed together into layers. This is called a “clad” coin.The gold bullion coins are available in four sizes: one ounce, one-half ounce, one-quarter ounce, and one-tenth ounce. The silver, platinum, and palladium bullion coins are available in the one ounce size.