Sand hanging separation blade type cooling pipe and molding method thereof

Abstract

The invention relates to a sand hanging separation blade type cooling pipe and a molding method thereof. A cooling pipe post-setting mode is adopted, the sand hanging separation blade type cooling pipe is arranged in a reserved pipe orifice core cavity, and after core sand is filled, compacted and dried, the cooling pipe is firmly fixed into a sand mold through a sand hanging separation blade. Through a sand hanging function of the sand hanging separation blade, the cooling pipe is firmly fixed in the sand mold, so that the cooling pipe is prevented from loosening and shifting due to reverse thrust generated by expansion of gas in the cooling pipe. Through a blocking function of the sand hanging separation blade, the reverse thrust acting force of expansion gas is redirected and slowed down , so that the sand mold is prevented from being damaged. Through a sealing function of the sand hanging separation blade, moisture absorption, moisture regain, oxidation rusting and foreign matter entering in the cooling pipe are avoided , so that the problem that molten iron enters the cooling pipe is avoided and solved. The sand hanging separation blade type cooling pipe provided by the invention is applied to water-cooling furnace mouths, is suitable for sand mold manufacturing, has the effects of resisting high-pressure gas impact and preventing the cooling pipe from shifting and loosening, and has practical value and economic significance.

Description

technical field [0001] The invention belongs to the metallurgical foundry industry, in particular to a sand-hanging baffle type cooling pipe and a molding method thereof. Background technique [0002] The water-cooled furnace mouth belongs to the converter furnace body equipment in the metallurgical industry. It is an important water-cooled component for maintaining the smelting of the converter. The quality of the water-cooled furnace mouth determines the operation and life of the converter. [0003] In the existing water-cooled furnace mouth molding process, the furnace mouth cavity and the core cavity reserved for the cooling pipe nozzle are first made with casting sand and real sample wood molds, and the cooling pipe is set after the method is adopted, and the pre-embedded bolts in the sand mold are used after the mold is lifted Fix the cooling pipe on the inner surface of the cavity, and then pour high-temperature molten iron into it. After the molten iron is cooled and...

AI Technical Summary

Problems solved by technology

(2) The gas in the cooling pipe expands rapidly under the heating of the high-temperature molten iron, and the high-pressure gas in the pipe has a severe impact on the nozzle sealing mud or cast iron plug, causing the cooling pipe to move in the opposite direction and the pipe plug to be washed out, further aggravating the loosening of the cooling pipe and the pipe plug. Sand core damage

At this time, the high-temperature molten iron flows back into the cooling pipe from the damaged part of the sand core under the action of the static pressure head of the casting, causing the cooling pipe to enter the molten iron and making the entire water-cooled furnace mouth waste.

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