Direct-current electric smelting process of smelting type welding flux and direct-current electric arc furnace thereof

Abstract

The invention discloses a direct-current electric smelting process of a smelting type welding flux and a direct-current electric arc furnace thereof, belonging to the technical field of smelting. The direct-current electric smelting process comprises the following process steps: batching, charging, electrifying, striking arc, drying, melting, reducing, smelting, matching colors, quenching in water, drying and screening. The direct-current electric arc furnace comprises a furnace body, a furnace body bracket 19, a graphite electrode 27, a graphite electrode stand 3, a graphite electrode stand sliding upright post 5, a sliding sleeve device 4, a driving rod 6 and a power and driving device. The invention has the advantages of energy saving, consumption reduction, small interference and impact to a power grid, low noise, and the like and can produce the smelting type welding flux by utilizing low-grade manganese ores and be used for producing various smelting type welding fluxes.

Description

DC Electrofusion Process of Smelting Flux and Its DC Arc Furnace Technical field The invention relates to the technical field of smelting, in particular to a direct-current electric melting process and a direct-current electric arc furnace for smelting flux for welding in the production machinery industry. Background technique In the equipment manufacturing process of machinery manufacturing, petrochemical industry, coal metallurgy, mining, construction, electric power, military industry, aerospace, ocean engineering and other fields, submerged arc automatic welding, semi-automatic welding, electroslag pressure welding and copper welding are widely used And pressure welding of vertical steel bars, etc., when performing the above welding, it is necessary to use various fluxes for protection, and the melting flux is one of the more important ones. In the prior art, the production method of smelting flux is produced by AC electric melting process, which is also the only produ...

AI Technical Summary

Problems solved by technology

Since the AC itself is a sine wave, it crosses the zero point 100 times per second, the arc is extinguished near the zero point, and then re-ignites in the opposite direction, so the stability of the AC arc is poor, and it is not stable during the electrofusion process, and its size and direction are instantaneous Therefore, the energy consumption is high, it is easy to generate smoke, dust and arc light, and the noise is large, which has a great impact on the working environment and the surrounding environment, causing great harm to people's health and fatal to the surrounding crops damage, and environmental governance is quite difficult

At the same time, there is a fatal weakness in the production of flux by AC electrofusion, that is, it is impossible to use low-manganese and high-iron ore as raw materials for smelting flux, which is increasingly scarce in manganese ore resources. Today's rise makes the production of smelting flux very difficult

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