The electric furnace is a heating furnace that converts the electric energy in the furnace into heat to heat the workpiece. Compared with the fuel furnace, the advantages of the electric furnace are: the atmosphere in the furnace is easy to control, and can even be evacuated; the material is heated quickly, the heating temperature is high, and the temperature is easy to control. ; The production process is easier to realize mechanization and automation; labor hygiene conditions are good; thermal efficiency is high; product quality is good;Influence of Vacuum Brazing Process on Microstructure of Tungsten and Steel In the metallurgical industry, electric furnaces are mainly used for smelting, heating and heat treatment of steel, ferroalloys and non-ferrous metals. Industrial-scale electric furnaces appeared at the end of the 19th century. Since the 1950s, due to the increase in demand for advanced metallurgical products and the decline in electricity costs with the development of the power industry, the proportion of electric furnaces in metallurgical furnace equipment has increased year by year. Electric furnaces can be divided into resistance furnaces, induction furnaces, electric arc furnaces, plasma furnaces, electron beam furnaces, etc.Research on Sintering Technology of Silicon Carbide Ceramic Material An electric furnace that uses the Joule heat generated by the current passing through the conductor as the heat source. According to the way of electric heat generation, resistance furnace is divided into direct heating and indirect heating. In the direct heating resistance furnace, the current passes directly through the material. Because the electric heating power is concentrated on the material itself, Vacuum oil quenching and tempering spring steel wirethe material is heated quickly, which is suitable for the process that requires rapid heating, such as the heating of forging blanks. This resistance furnace can heat the material to a very high temperature, such as a carbon material graphitization electric furnace, which can heat the material to more than 2500°C.Effect of Vacuum Annealing on Alloy Sheet