Coining Sheet Metal

Both the punch tip and the punch actually penetrate into the metal past the neutral axis under a high amount of pressure.

Coining sheet metal.

Coining may be used to control surface quality and detail on parts. Coins metal currency are created with the coining process. Coining is a form of precision stamping in which a workpiece is subjected to a sufficiently high stress to induce plastic flow on the surface of the material. Coining also can reduce the metal thickness.

Sheet metal coining marking stamping applications overview clinching eclinching riveting joining fastener insertion assembling punching coining pressing reference projects. For instance if you want to get a 45 degree angle you need a punch and a die with the exact same angle. Coining fabrication is a basic type of bending in which the workpiece is stamped between the punch and die. The metal is given the die s exact shape by applying great tonnage.

Coining also is a leading producer of gold aluminum and copper bonding wire as well as jumper chips bonding pads tabs heat sinks lead frames solder spheres and cover assemblies for the microelectronics industry. In coining the sheet metal is more than just bent it is actually thinned by the impact of the punch and die as it is compressed between them along the bending surfaces fig. This is a flashless precision forging. One disadvantage is that it takes a great deal of force to coin metal.

We provide a range of metal processing services including tube and steel bending for los angeles california and surrounding areas. Coining dies create the part s shape by squeezing the metal under extreme pressure. Because coining uses compression to form the part tension failure is unlikely. Special coining presses or knuckle presses are often used.

A beneficial feature is that in some metals the plastic flow reduces surface grain size and work hardens the surface while the material deeper in the part retains its toughness and ductility. And a brilliant surface finish. Hansen steel is an expert in metal forming tube bending cutting and fabrication for various markets throughout california. The term coining comes from the idea that when it comes to money each metal coin is made exactly the same as the last despite being mass produced.

Metal coining is a forging process by which very fine and intricate details can be created on the surface of a work piece. A simple round metal slug is placed into the die and forced to flow into a given shape by compressing it see figure 3. It can produce sharp crisp corners. Coining has several advantages and disadvantages.