Alloy paste for making steel-backed pure copper-lined composite conductive tiles

Abstract

The invention relates to alloy coating paste for manufacturing a steel back pure copper lining composite conductive tile. The alloy coating paste mainly comprises, by mass percentage, 38-42% of Mn, 18-22% of Ni, 35-40% of Cu and 2-3% of dehydrated borax. The materials are mixed, anhydrous alcohol and phenolic resin are added to the mixture to make the paste coasted on the surface of a back body of the composite conductive tile, the heat of molten metal fuses the coating layer into a layer 2-3mm in thickness after casting pouring, and the layer is composited with poured metal through metallurgical bonding. The alloy coating paste has the advantages that the back body is made of stainless heat-resistant steel or heat-resistant cast iron, the molten pure copper generated by thermit reaction is used as the material of a lining, the two materials are composited through metallurgical bonding, the back body is high in heat intensity, heat-impact-resistant and gas-corrosion-resistant, the lining is high in conductivity, and the composite body of the two can give ideal working features to workpieces, and low cost is achieved.

Description

technical field [0001] The invention relates to the technology of processing and producing conductive copper tiles for submerged arc furnaces, in particular to an alloy paste for making steel-backed pure copper-lined composite conductive tiles. Background technique [0002] At present, the submerged arc furnace method is the main method for producing ferroalloys. The main consumable part of the electrode holder used in the submerged arc furnace—conductive copper tile is the key part of the equipment (see the attached drawing of the manual. figure 1 ), its service life directly affects the production cost. [0003] The traditional conductive tile is made of H96 brass. Because it is made of copper as a whole, the consumption of copper is large and the cost is high, and H96 copper has 4% impurities (mainly deoxidization residues and Other elements added), compared with pure copper (T99), the resistance is larger, and the conductivity is reduced by 20-30%. Another disadvantage ...

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Problems solved by technology

[0003] The traditional conductive tile is made of H96 brass, because it is made of copper as a whole, the consumption of copper is large, the cost is high, and H96 copper has 4% impurities (mainly deoxidization residues and for improving casting performance) Other elements added), compared with pure copper (T99), the resistance is large, and the conductivity is reduced by 20-30%. Another disadvantage is that the high-temperature strength of copper is low. , cracks, falling blocks and failure, limited service life

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