Study the influence of the pre-finish gauges form on the effectiveness of the grooves filling in the finishing pass of reinforcing steel rolling
During reinforcing steel rolling such geometric defect as the absence of longitudinal or transverse ribs is spread. For a detailed study of the process of reinforcement profile rolling and its further optimization, computer simulation in the software complex DEFORM-3D was carried out. In the previous works the most rational, from the authors' point of view, forms of pre - finishing gauges for rolling of reinforcing steel are proposed - a one-radius oval and a flat oval with double concavity. Also, a new calibration for rolling of round and reinforcing steel was proposed, the main feature of which is the pre-finishing caliber, made in the form of a smooth barrel. To assess the impact of the pre-form gauge on the strain state, a single simulation was conducted, i.e. modeling only the prefinishing caliber, after which the calculation of the finishing pass was conducted.
From considered calibers, the most uniform distribution of deformation provides a flat oval with double concavity, where the distribution in the vertical and horizontal directions is approximately the same. In other two calibers, the spread difference is quite different. After rolling in the finishing pass, the metal completely filled the contour of the caliber, as well as the screw incisions of the transverse ribs. The longitudinal ribs are also fully formed. All geometric parameters with tolerances fully comply with the requirements of GOST 10884-94.
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