Coining Process In Sheet Metal

Coining may be used to control surface quality and detail on parts.

Coining process in sheet metal.

As a result of the high deformative stress the metal conforms to the shape of the die. Bottom bending has similarities to both air bending and coining. Coins metal currency are created with the coining process. Coining dies create the part s shape by squeezing the metal under extreme pressure.

A simple round metal slug is placed into the die and forced to flow into a given shape by compressing it see figure 3. Techniques of coining completely closed dies are used for this process. Metal coining is often a finishing process for manufactured products. Benefits cnc controlled process with correction option slotting operations in individual steps.

Coin production figure 8 1 indenting impressions into badges coining components for mechanical engineering and the electrical engineering industry figure 8 2. Coining also can reduce the metal thickness. In coining the thickness of the material in the starting stock is altered. 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.

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. Commonly used equipment include box and pan brakes brake presses and other specialized machine presses typical products that are made like this are boxes such as electrical enclosures and rectangular ductwork. In this process the die angle should match the intended. Bending is a manufacturing process that produces a v shape u shape or channel shape along a straight axis in ductile materials most commonly sheet metal.

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. 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 the term comes from the initial use of the. High pressure is applied on the closed die containing the metal work piece. The grob slotting technology is a universal and extremely cost effective slotting coining and forming process for cup or ring shaped sheet metal workpieces.

The coining process is preferred when there is a high tonnage. 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.