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An analytical method is proposed for calculating the shaping parameters of thick sheet in the pro duction of large diameter pipe. This method is considered in several stages: formulation of a geometric model of the blank and the tool; numerical calculations; selection of the algorithm; and analysis of the results. Com parison of calculated and experimental shaping parameters for sheet used in the production of different types of large diameter pipe reveals good agreement. The proposed method is recommended for calculating the shaping parameters in the production of large diameter pipe and the setup so as to minimize the defects due to the geometry of the press.

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