Steel coil spraying method and device

Abstract

The invention discloses a steel coil spraying method and spraying device.The spraying method comprises the steps that the diameters of a steel coil inner ring and a steel coil outer ring in the first direction and the second direction which are perpendicular to each other are obtained, the diameters of the steel coil inner ring in the first direction and the second direction are d1 and d2 correspondingly, and the diameters of the steel coil outer ring in the first direction and the second direction are D1 and D2 correspondingly; according to the difference value between the d1 and the d2, the innermost ring spraying curve of the steel coil is determined; according to the difference value of the D1 and the D2, the spraying curve of the outermost ring of the steel coil is determined; and according to the innermost ring spraying curve and the outermost ring spraying curve, the axial end face of the steel reel is subjected to edge crack prevention coating spraying. According to the spraying method, the spraying position is accurate, the inner core and the middle ring of the end face of the steel coil cannot be sprayed, the spraying effect of the inner ring and the outer ring of the steel coil is guaranteed, and the problem of annealing edge cracking caused by the fact that the inner ring and the outer ring cannot be effectively sprayed is solved.

Description

technical field [0001] The invention belongs to the technical field of steel coil end face paint spraying, and particularly relates to a steel coil spraying method and a spraying device. Background technique [0002] In order to relieve stress, the silicon steel coil should be placed in a ring annealing furnace for annealing treatment. However, during the annealing process of the steel coil, edge crack defects are easily generated due to the faster heating and heat dissipation rates of the inner and outer rings. At present, in order to avoid edge cracking defects during the annealing process of the steel coil, a special anti-edge cracking coating is applied to the silicon steel coil near the outer ring and the inner ring of the axial end face to prevent the steel coil from entering the annealing furnace. Cracked edges. [0003] The current spraying method of the anti-edge crack coating may be sprayed to the non-sprayed position of the end face of the steel coil or outside t...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a steel coil spraying method and a spraying device, the spraying position is accurate, neither the inner core nor the The middle ring to the end face of the steel coil ensures the spraying effect of the inner and outer rings of the steel coil and avoids the annealing edge crack problem caused by the ineffective spraying of the inner and outer rings

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