Bottom ring for submerged arc furnace and manufacturing method thereof

Abstract

The invention relates to a bottom ring for a submerged arc furnace and a manufacturing method thereof. The bottom ring comprises a bottom ring body with a cavity structure, wherein the bottom ring body is provided with a water inlet and a water outlet. The bottom ring is characterized in that the bottom ring body is cast by adopting an integral casting method; the upper ends of the water inlet and the water outlet are additionally provided with extending segments; the extending segments and the bottom ring body are made of same materials, and joint parts are in threaded connection. The bottom ring for the submerged arc furnace, which is disclosed by the invention, is cast into an integral structure by adopting an integral casting process without welding seams or water leakage and does not need to be maintained, thereby prolonging the service life, reducing the production cost and achieving the safety guarantee; and when the bottom ring is manufactured, the water inlet and the water outlet are utilized as a clearance hole and an air hole, no process hole is additionally arranged, a cavity is formed by adopting a sand core which is easy to disperse, and a gas generated in the sand core during pouring is discharged through the water inlet and the water outlet by utilizing a vacuum pumping method so that liquid metal can be stably operated in the pouring and solidifying process, therefore the quality of a product is ensured.

Description

technical field [0001] The invention relates to a bottom ring for a submerged arc furnace and a manufacturing method thereof. Background technique [0002] Bottom ring is a part to protect the combined handle of the submerged arc furnace electrode. It is located at the lower end of the graphite electrode, surrounds the electrode, and is close to the surface of the hot molten pool. It is usually made of copper and is a vulnerable part. The role of the bottom ring on the combined electrode holder is to hold and seal all the parts around the electrode, so that the conductive system can operate reliably and will not be damaged prematurely by the furnace gas, so the role is very important. [0003] The ambient temperature of the bottom ring is as high as 1800 degrees, and the interior needs to be cooled by water to resist the erosion of high temperature and furnace gas pressure. The main forms of damage are ablation deformation and water leakage. Ablation will reduce the servic...

AI Technical Summary

Problems solved by technology

Copper welding exhibits poor workmanship, labor and time-consuming, and increases production costs

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