Drill bit for electric furnace tapping hole

Abstract

The invention discloses a drill bit for an electric furnace tapping hole. The drill bit comprises a drill bit body and a connecting drill stem which is connected with the drill bit body, wherein the drill bit body is integrally of a cone shape; the conical front end of the drill bit body is of a cross shape formed by four cutting tool mounting parts; each cutting tool mounting part is detachably provided with a cutting tool; and four air holes are reserved inside the drill bit body. The invention provides the drill bit capable of rapidly opening the electric furnace tapping hole; the electric furnace tapping hole can be rapidly opened by the detachable cutting tools embedded in the top end of the drill bit; and the online replacement of the cutting tools can be realized. The drill bit has the advantages that the labor intensity is reduced; the smelting time is shortened; and the smelting power consumption is reduced. The drill bit for the electric furnace tapping hole can be popularized and applied to similar industries and fields, so that the prospect is wide.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to an electric furnace tap hole drill bit. Background technique [0002] At present, the new technology of non-blast furnace ironmaking has been developed rapidly in the world. Among them, the "rotary hearth furnace direct reduction-electric furnace smelting deep reduction" process is one of the new non-blast furnace ironmaking technologies. Using this process to treat vanadium-titanium magnetite can be Reaching the purpose of separation and recovery of iron, vanadium and titanium in vanadium-titanium magnetite is a new way to realize the comprehensive recovery and utilization of vanadium-titanium ore resources. [0003] Metallized pellets with high metallization ratio are produced by direct reduction of ore-coal mixed pellets through a rotary hearth furnace, which creates favorable conditions for deep reduction in an electric furnace. The metallized pellets are melted by an electric furna...

AI Technical Summary

Problems solved by technology

[0005] 1) Only one tool is installed on the front end of the drill body, so the work efficiency is very low; and the tool of the traditional drill bit is generally connected to the drill body in a fixed connection mode, so that when the tool is worn out and the tool cannot work normally, it can only be replaced with a new one. In this way, the resources of the drill body are wasted. Since the drill body is made of chromium-tungsten alloy steel, its cost is relatively high, which will not be conducive to cost saving

[0006] 2) The design of the front end of the drill bit is unreasonable, the tapered slope is gentle or basically has no slope, it takes 30min to 40min to drill the hole, and the work efficiency is low; in serious cases, the drill cannot be drilled, and oxygen needs to be manually burned, which increases labor intensity, prolongs smelting time, and smelting power consumption Increase, increase smelting cost

[0007] 3) The traditional drill bit uses ordinary carbon steel, which has poor high temperature wear resistance, and the service life of each drill bit is 3 to 5 times, and the service life is short

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