Hydraulic vibration method for continuous casting mold

Abstract

The invention relates to the field of steel-making casting, in particular to a vibration method for a continuous casting mold during casting. In the hydraulic vibration method for the continuous casting mold, the continuous casting mold vibrates during casting according to the following curve, and the vibration curve is in accord with a vibration curve equation expressed by displacement (img file = 'dest_path_image002.TIF' wi = '16 'he = '16' / ) and speed (img file = 'dest_path_image004.TIF' wi = '13 'he = '16' / ). According to the hydraulic vibration method for the continuous casting mold provided by the invention, a precisely set non-sinusoidal vibration curve model is given, and parameters in the vibration curve model can be adjusted according to the required quality of casting blanks and problems in production through the vibration curve model, so that the quality of the casting blanks is improved; the actual production shows that the vibration marks of the casting blanks obtained by casting are uniform in depth, the distance between the vibration marks is reduced by 20%, the depth of the vibration marks is reduced by more than 30%, and the lubrication of the casting mold is favorable; meanwhile, the tensile stress of blank shells is reduced, the pull crack is reduced, and the quality of the casting blanks is effectively improved.

Description

technical field [0001] The invention relates to the field of steelmaking and casting, in particular to a method for vibrating a continuous casting crystallizer during casting. Background technique [0002] Slab vibration marks produced by crystallizer vibration are important factors affecting the surface quality of slabs. If the vibration marks are deep, horizontal cracks will occur during straightening, and vibration marks will occur on hot-rolled and continuous casting and rolling strip steel. Streak or crack defects; slag inclusion and composition segregation at the bottom of the vibration mark will affect the composition uniformity and mechanical properties of the rolled product; and because the vibration accuracy of the vibration system of the continuous casting machine will decrease, the longitudinal cracks and corner cracks of the slab will increase, and in severe cases it will Cause leaking steel. The traditional crystallizer vibration is mostly mechanical sinusoida...

AI Technical Summary

Problems solved by technology

And because the vibration accuracy of the vibration system of the continuous casting machine decreases, it will increase the longitudinal cracks and corner cracks of the slab, and in severe cases, it will cause steel breakout, which not only interrupts the continuous casting production, but also reduces the production efficiency, resulting in huge economic losses.

Seriously affect the quality of continuous casting slab and the improvement of production efficiency

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