Red copper brass new technique used by ore-smelting electric furnace

Abstract

The invention relates to a method for manufacturing brass widely used as conductive element in ore-smelting electric furnace equipment in enterprises producing metallic silicon, ferrosilicon, calcium carbide and the like. The whole production technique mainly comprises the steps of adding trace lithium salt in red copper in melting and casting semicontinuously, hot rolling in set dimension, rough processing the blanks, drilling cooling deep holes, cold pressing and shaping, assembling into a whole, testing the finished product, etc. Cathode pure copper is selected as raw material compulsorily; deoxidation is carried out in melting to ensure the casting blank to be anaerobic copper ingot, and trace lithium salt is added, after casting and crystallizing, the compactness, corrosion resistance, high temperature resistance, abrasion resistance, impact resistance, hardness, electrical conductivity and thermal conductivity of the copper product are improved; the hot rolling process smashes bulky arborization crystal to cause crystalline grains to be thin, the fiber structure is continuous with being cut off the mechanical property, electrical conductivity and thermal conductivity are vastly enhanced; water holes are cooled by deep hole drilling machine processing; a press is used for performing cold pressing to roll the blank into arc shape; a boring machine and other equipments are used for boring out required cambered surface radius, electrical conduction joint parts and brass propping parts; and finally the parts are assembled into a whole, and the product is warehoused after passing the test.

Description

technical field [0001] The invention relates to a method for manufacturing a conductive device, in particular to a method for manufacturing copper tiles that are widely used as conductive devices in submerged arc furnace equipment in metal silicon, ferrosilicon, calcium carbide and other production enterprises. Background technique [0002] Due to the high temperature of the submerged arc furnace equipment, the surface of the copper tile is easily oxidized; at the same time, due to the incomplete contact between the copper tile and the electrode, it is easy to cause intermittent instantaneous strong pulse discharge and burn the surface of the copper tile. Therefore, the copper tile is a vulnerable conductive device. Traditionally, cast copper tiles are used. During the casting process, the metal has to go through the crystallization process from liquid to solid and the temperature gradient process of continuous cooling of the casting. In these processes, various casting defe...

AI Technical Summary

Problems solved by technology

Traditionally, cast copper tiles are used. During the casting process, the metal has to go through the crystallization process from liquid to solid and the temperature gradient process of continuous cooling of the casting. In these processes, various casting defects (such as loose structure, pores, clamping, etc.) will be accompanied. slag, cracks, etc.) cannot be eradicated, resulting in defects such as water leakage, breakage, and block drop during use, which affect its service life; the casting process also causes uneven internal structure of copper tiles, large grains, and poor compactness, which affects Its mechanical properties and electrical conductivity; in addition, in order to reduce the copper in cuprous oxide, it must be deoxidized. No matter which deoxidizer is added, it will affect the purity of copper and greatly reduce its electrical conductivity.

In short, the traditional cast copper tiles cannot improve the performance indicators of electrical conductivity, resistivity, mechanical properties, etc., and also cause a series of defects such as water leakage, breakage, and block loss of the copper tiles in the manufacturer's submerged arc furnace, which greatly affect the copper tiles. The service life of submerged arc furnace manufacturers often exceeds the standard due to the copper tile problem and stops production continuously, resulting in a serious waste of a lot of manpower, material resources and financial resources.

In addition, the equipment for producing cast copper tiles is backward, and most manufacturers use coke furnace crucibles for smelting. The environmental pollution is serious, the labor intensity of workers is high, the working environment is harsh, and the productivity is low.

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