Contact element for submerged arc furnace electric conduction and manufacturing method thereof

Abstract

The invention relates to a contact element for submerged arc furnace electric conduction. The contact element comprises a contact element body composed of a left element and a right element, wherein the left element and the right element are symmetrical. The left element and the right element are connected and regulated through a connecting assembly, and a rib sheet for leading current to a graphite electrode is arranged between the left element and the right element. A casting method is used for casting the contact element. During manufacturing, a plurality of contact elements are arranged in the same sand box, a water inlet and a water outlet are used as an air outlet and a sand outlet, a water inlet channel and a water outlet channel are formed by sand cores, sand core heads are used for discharging air and sand, and the sand core heads and core heads can support and fix the sand cores together. The casting method is used for casing circular slender cooling water channels distributed in the contact element, a machining process is omitted, a problem that processing of slender circular holes is difficult is solved, processing period is shortened, and product quality is guaranteed. The manufacturing method is simple, easy, high in processing finished goods rate and low in cost.

Description

technical field [0001] The invention relates to a contact element for electric conduction of a submerged arc furnace and a manufacturing method thereof. Background technique [0002] The contact element is a conductive part in the conductive system of the submerged arc furnace, and its function is to transmit the current sent by the electrical short network to the graphite electrode. Each electrode shell is clamped between the left and right contact elements with several ribs uniformly distributed along the axial direction. The contact elements are distributed around the graphite electrodes, and the current is introduced to the graphite electrodes through the ribs. [0003] The contact elements operate in a high temperature environment, and usually need to be cooled by water to ensure the use effect. The cooling water flows in from the water inlet, and flows out from the water outlet through the cooling water channel. The water inlet and outlet channels are two round holes...

AI Technical Summary

Problems solved by technology

[0004] The cooling water channels of the existing contact elements are all formed by machining after molding. Due to the large length-to-diameter ratio of the hole, it is difficult to process, and the problem of water channel skewing or penetrating the pipe wall often occurs. The waste rate is high and the work efficiency is low. Processing high cost

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