Coining Operation In Sheet Metal

In this operation a sheet metal workpiece is placed or kept between two dies from one end.

Coining operation in sheet metal.

It leaves a lean edge on the piece of metal is sheared or cut. 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 fabrication is a basic type of bending in which the workpiece is stamped between the punch and die. 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.

Embossing is an operation in which sheet metal is drawn to shallow depths with male and female matching dies. The operation is carried out mostly for the purpose of stiffening flat panels the operation is also sometimes used for making decoration items like number plates or name plates jewelry etc. This is used for making works on metal like coins medals etc due to the fact that it produces finer and detailed. It is a cut in a straight line across a strip sheet or bar.

What you need to know about coining coining is a metalworking operation used to create raised surfaces and imprints in metal. Coins metal currency are created with the coining process. Embossing operation with two dies. Coining is relatively severe.

A simple round metal slug is placed into the die and forced to flow into a given shape by compressing it see figure 3. Coining dies create the part s shape by squeezing the metal under extreme pressure. Both the punch tip and the punch actually penetrate into the metal past the neutral axis under a high amount of pressure. Coining also can reduce the metal thickness.