Differential-height casting method for horizontal roll frame blank of rough mill

Abstract

The invention discloses a differential-height casting method for a horizontal roll frame blank of a rough mill. The method comprises: arranging a cavity of the horizontal roll frame blank of the rough mill in a casting pit, and arranging a plurality of risers on the cavity, wherein the pouring heights of the risers are different; and arranging cover cores on the risers with lower pouring height than those with high pouring height, wherein each cover core is provided with a re-pouring cup and multiple vent holes. According to the invention, a differential-height pouring method can be adopted for the pouring, thus the total amount of the used molten steel is effectively reduced, the energy resources and raw materials consumed for smelting the molten steel are decreased, and the emission of pollutants is reduced; and moreover, the yield of the frame blank is improved, the total production cost is saved, and the economic benefits are increased.

Description

technical field [0001] The invention relates to a casting method of a casting, in particular to a method for casting with a difference in height of a blank of a horizontal roll stand of a rough rolling mill. It belongs to the field of mechanical casting. Background technique [0002] The roughing mill is one of the equipment used to produce steel in iron and steel enterprises, and the roughing mill stand is a key part of the whole set of rolling mill equipment, which bears a huge load during use, so it is required to have a high internal quality. Generally, the casting method is used to produce the frame blank first, that is, the cavity of the rough rolling mill horizontal roll frame blank is set in the casting pit, and then casting is carried out, and the frame blank is formed after the molten steel is solidified and cooled in the casting mold. Then, it is manufactured by machining. The material of the cast frame is carbon cast steel or low alloy cast steel. [0003] lik...

AI Technical Summary

Problems solved by technology

Since the upper part 1 of the rough rolling mill rack blank is provided with a boss 4, and the boss 4 is higher than the parting surface A of the rack blank, therefore, the height of the riser at other positions is higher than that at this position, and the casting At this time, in the risers of the lower part of the rack blank 2 and the riser of the rack blank column 3, the molten steel with a certain height does not play the role of feeding, which forms a waste of resources, increases the total weight of the molten steel and due to smelting molten steel Consumed energy and raw materials; at the same time, it also increases production costs and pollutant emissions

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