Coining Process In Sheet Metal

Coining is a cold forming process where certain surface forms are produced with low material displacement.

Coining process in sheet metal. The term comes from the initial use of the process. Because the sheet metal flows during the process of coining the bend radius formed by coining is always equal to that of the punch tip. Coining in bending gives similarly precise results. Metal rolling metal extrusion metal drawing sheet metal powder processes metal coining metal coining is a forging process by which very fine and intricate details can be created on the surface of a work piece.

Stamping includes a variety of sheet metal forming manufacturing processes such as punching using a machine press or stamping press blanking embossing bending flanging and coining. 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. Stamping is the process of placing flat sheet metal in either blank or coil form into a stamping press where a tool and die surface forms the metal into a net shape. Sheet metal coining process is explained in this video to demonstrate each step of how the product is manufactured in the metalworking industry.

Coining derives it name from coins as they have to be identical to make fake money distinguishable from the real one. And a brilliant surface finish. For instance if you want to get a 45 degree angle you need a punch and a die with the exact same angle. Coining dies create the part s shape by squeezing the metal under extreme pressure.

During the coining process the material is put under enough pressure that the punch tip penetrates the material at the bottom of the bend and it begins to flow into the die. It can produce sharp crisp corners. Coining has several advantages and disadvantages. The coins that you have in your pocket are a classic example of items made by coining.

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. The metal is given the die s exact shape by applying great tonnage. Coins metal currency are created with the coining process. 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 also can reduce the metal thickness.