Conclusions
The tests reported here do not support the view that eccentricity cannot be improved during block drawing. Under the conditions existing for this test and in the eccentricity ranges quoted, there was a significant improvement when the starting eccentricity was high. In addition, the greater the reduction in area that is necessary to achieve a specific size, the greater the probability of improving eccentricity.
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Tetley, G. Variation of eccentricity during block drawing of tubes. J. Applied Metalworking 1, 80–83 (1978). https://doi.org/10.1007/BF02833963
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DOI: https://doi.org/10.1007/BF02833963