The coining technique involves displacing the material in an area beyond its elastic limit without causing it to rupture. The coining action is therefore a transfer of an image or shape in relief that is permanently engraved in the part.
coining is a technique similar to die forging. The differences between these two processes lie in the materials used. coining focuses on the deformation of steels, primarily composed of iron (chemical symbol Fe), while die forging is used for non-ferrous metals such as Copper (Cu) and aluminum (Al) or alloys like Brass, which is mainly a combination of copper and zinc (Cu + Zn).
coining is a technique that combines all the advantages of the forging manufacturing process. It offers good repeatability, surface finish, improved mechanical properties due to the strain hardening of the area, and grain alignment in the metal stress zones related to deformation.
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