The advancement of high and new technology has promoted the development of industrial electric furnaces

With the development of technology and automation, computer control systems are widely used in industrial automation, greatly improving the technical level of factory equipment, promoting production efficiency, improving product quality, and ensuring safe and reliable production. Since the 1950s, due to the increase in demand for metallurgical products and the decline in electricity costs with the development of the power industry, the quota of industrial electric furnaces in metallurgical furnace equipment has increased year by year. Industrial electric furnaces produced by many manufacturers include annealing furnaces, heating furnaces, resistance furnaces, quenching electric furnaces, salt bath furnaces, box-type resistance furnaces, deep well furnaces, large trolley-type electric furnaces, and gas carburizing electric furnaces.

In terms of use, in the foundry, there are cupolas for melting metals, induction furnaces, resistance furnaces, electric arc furnaces, vacuum furnaces, open hearth furnaces, crucible furnaces, etc.; there are sand drying furnaces for baking sand molds, ferroalloy ovens, and casting annealing furnaces, etc. ; In the welding workshop, there are pre-weld pre-heating furnaces and post-weld pit tempering furnaces for weldments; in the forging workshop, there are various heating furnaces for heating steel ingots or steel billets before forging; in the metal heat treatment workshop, there are improved workpieces Various annealing, normalizing, quenching and tempering heat treatment furnaces for mechanical properties. Suzhou electric furnaces are also widely used in other industries, such as distillation furnaces and cracking furnaces in the petroleum industry, ore sintering furnaces and coke ovens, cement kilns and glass melting in the silicate industry, metal smelting furnaces in the metallurgical industry, and baking furnaces in the food industry. Ovens, furnaces in the gas industry, etc. Industrial electric furnaces can be divided into two categories according to the thermal system, which are intermittent furnaces, also known as periodic furnaces, and continuous furnaces. Among them, the characteristic of the periodic furnace is that the temperature of the furnace changes during each heating cycle when the furnace is intermittently produced.

Metallurgical furnaces that use electric heating effect for heating. The electric furnace equipment is usually a complete set, including electric furnace body, switch, vacuum equipment, electric equipment, automatic adjustment system, and auxiliary appliances for furnace mechanical equipment. Compared with the fuel furnace, the electric furnace has the characteristics that the gas in the furnace is easy to control, and can even be pumped into a vacuum, the heating temperature is high, the temperature is easy to control, and the production process has a high possibility of mechanization and automation.