Improvement of the method for calculating rolling tables for continuous mandrel-free hot pipe rolling mills
DOI:
https://doi.org/10.15802/tpm.3.2025.04Keywords:
roll calibration, reduction mill, calibration mill, longitudinal mandrelless rolling, rolling tableAbstract
The way in which the setup parameters and fork calibrations of calibration and reduction mills for hot mandrelless pipe rolling are calculated depends to a certain extent on their accuracy in terms of wall thickness and diameter. Significant factors that have a significant impact on the process of pipe forming during longitudinal rolling in the gauges of a continuous mandrelless mill include the methods of processing roll gauges (individual processing of each roll separately or processing of gauges as a whole). A new methodology has been developed for calculating pipe rolling tables in these mills, which takes into account the technology of cutting roll gauges. It is proved that the use of an improved methodology for calculating rolling tables on calibration and reduction mills of various design allows the production of hot rolled pipes with a significant increase in the accuracy of geometric dimensions and a reduction in metal consumption.
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