Method for sticking connection joint of graphite electrode for making steel

Abstract

A method of preventing the graphite electrode connection part joints used in electric furnace steelmaking from relaxing. The method infuses asphalt in the graphite joints blank before processing into products. The best way of infusing is to process the graphite joints blank into the double-cone approximate to the shape of the joints in advance, then infuses. But if infusing the blank which is not processed in advance is also able to achieve the effect. The method directly processes the blank into electrode joints after infusing. The joints and the electrode are given to the users in matching. Adopting the invention is able to lead the electrode to not relax when used by the users, and the electrode consumption is reduced by 3-5%.

Description

Technical field [0001] The utility model relates to a bonding method for connecting joints of graphite electrodes used in electric furnace steelmaking. The utility model can effectively prevent the slack phenomenon from occurring when the electrodes are connected. Background technique [0002] During electric furnace steelmaking, graphite electrodes are screwed together through the joints and the threaded parts of the electrode holes to achieve continuous butt joints between electrodes. Under the action of electromagnetic force and mechanical vibration, the joints and electrode holes often loosen, and the resulting breakage and shedding loss account for about 30% of the total consumption of graphite electrodes for steelmaking. In the past, in order to prevent the connection between the joint and the electrode hole from loosening, it was used to drill holes in the joint and then embed asphalt and other materials. In the process of steelmaking, materials such as asphalt flow...

AI Technical Summary

Problems solved by technology

However, because the amount of adhesive is limited to tens of grams, and it can only penetrate into a small part of the connecting thread, the effect is limited.