The deformation force, and hence the capacity of a press employed to forge a given component, is determined not only by the size of the component but also by the degree of complexity of its shape and the dimensions and shape of the metal thrown as flash. The influences of the three main parameters of the flash metal on forging load, namely shape, percentage amount of flash metal in relation to the weight of the forging, and the flash thickness, are discussed in this paper. The investigation, which was part of a research programme into ‘Die load and stresses in press forging’, was aimed at determining the best flash design to produce a cheap product.
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