Electric Furnace Transformer

Product Introduction

Electric furnace transformer is designed to meet the requirement of power supply to electric furnace.The speciality of electric furnace transformer is to lower the high voltage supply that can run arc furnace, submerged arc furnace, refining furnace, electric slag furnace, salt bath furnace etc for the smelting of emery, ferrosilicon, calcium carbide, sulfur, graphite, welding flux, cast steel, ceramide sand, pearl sand, metallurgical auxiliary materials, carbon ferromanganese, aluminum ferromanganese, iron vanadium, silicon manganese alloy, etc. In the mining & metal industry, these transformers seek huge appreciation. The types, voltage and cooling modes vary in order to perfectly cater the needs of the application areas. The excellent cooling modes like forced water cooling mode, self-cooling mode, etc., also make these transformers highly efficient in working.These transformers must be designed to resist the high levels of electrical, thermal and mechanical stress to which they are subject during utilization.

Working Principle

The electric furnace transformer is the power transformer of the steelmaking electric arc furnace. The capacity of the electric furnace transformer is configured according to the size of the electric arc furnace and the smelting process. It meets the requirements of the smelting process through voltage regulation. The voltage regulation method is divided into two types: on-load voltage regulation and off-excitation voltage regulation. Large electric furnace transformers with on-load voltage regulation do not have series reactors, and the structural forms of small and medium-sized electric furnace transformers with off-excitation voltage regulation can be divided into two types: with series reactors and without reactors. These two structures can change the impedance at the highest two voltages. The former changes the impedance by the input and removal of the series reactor. The latter changes the winding impedance by changing the connection method of the high-voltage winding of the electric furnace transformer itself.

Characteristics and Strengths

❊High overload capacity: In the working process of some electric furnaces, especially during startup or specific process stages, the transformer needs to be able to provide a short-term overload capacity to meet the power demand of the electric furnace.
❊Low voltage and high current output: Electric furnaces usually require low voltage and high current power to generate enough heat. The electric furnace transformer can convert the high voltage of the power grid into a low voltage suitable for the operation of the electric furnace and provide high current output.
❊Good voltage regulation performance: In order to meet the different voltage requirements of the electric furnace at different working stages, the electric furnace transformer has good voltage regulation performance, and can adjust the output voltage in a large range by direct voltage regulation or indirect voltage regulation. 
❊High reliability: Since electric furnaces usually play a key role in industrial production, continuous and stable operation is essential to production. Therefore, the electric furnace transformer needs to have high reliability and be able to operate stably for a long time in harsh working environments.

Application

❊Steel industry: used to power electric furnaces in the steel smelting process to ensure the stability and efficiency of the smelting process. For example, in arc furnace steelmaking, the electric furnace transformer provides strong power for the arc furnace, so that the charge in the furnace can be melted and refined quickly.
❊Non-ferrous metal industry: In the smelting and processing of non-ferrous metals such as aluminum and copper, the electric furnace transformer provides necessary power support. For example, in the electrolytic refining process of copper, the electric furnace transformer provides a stable DC power supply for the electrolytic cell.
❊Glass and ceramics industry: In the production process of glass and ceramics, the electric furnace transformer ensures the stable power supply of the kiln and guarantees the product quality. For example, the melting and molding process of glass and the firing process of ceramics are inseparable from the power provided by the electric furnace transformer.

❊Chemical and heat treatment industries: In the heating and heat treatment process of chemical raw materials, electric furnace transformers provide the necessary power to ensure the smooth progress of the process. For example, in the petrochemical industry, they are used to heat reactors, distillation towers and other equipment.

Production Process

Manufacturer's View