Application of flow model in metal cutting to cold forging of tubular products
2019
Abstract The flow model in metal cutting is applied to cold forging for forming a H-shaped double cup by moving the bottom of an ironed cup to a predetermined position. In the proposed process, the cutting flow occurs between the internal corners of the upper cup and the lower cup and the tool pressure is lower than half of the plasticity coefficient of the cup material. Products are formed without defects when the ratio of the depth of cut to the bottom thickness of the cup is larger than the critical value related to the corner radius of the ironed cup.
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