The Effects of Failure Types on Cold Forging Dies

Abstract

Fastener preferences are also changing in parallel with the development of the automotive industry. During these periods, when light-weightings and carbon emissions have great importance; each part used is forced to be lighter, carbon footprints are calculated and more strength parts are designed. Therefore, the designs, sizes and even raw materials of the fasteners used in the connections of the parts must be re-considered. This reconsideration along with the manufacturers of fasteners supports scientific knowledge using advanced technologies, unique products, on behalf of the design of the production steps and the tool dies are of great importance. According to the complex geometry and strength quality of the bolt, product design and accordingly die designs are carried out. The machining steps used in the production of the dies are vital in terms of their lifetime. In the production of fasteners, the cold forging method is preferred because of its many advantages such as mass production flow, precise geometric tolerance and no need for external heat energy. One of the most required part of the cold forging dies are precision tolerance production. The production and design of cold forging dies play an active role in terms of quality and production performance since they directly affect the final product. In this article, the importance and effects of the manufacturing steps in cold forging dies used in bolt manufacturing will be discussed.

Keywords

• Cold forging
• bolt manufacturing
• shrink fit
• failure mechanisms
• closed cold forging die

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