Luoyang HongtengIntermediate frequency induction furnace
Induction furnaces can be used in smelting, heat preservation and heat treatment of various metals. The intermediate frequency furnace power supply, as the supporting equipment of the induction furnace, is a frequency conversion device that converts the three-phase power frequency power supply into a single-phase power supply. It has developed from an early intermediate frequency generator set into a thyristor type variable frequency power supply. Later, through continuous development and improvement, it has become a new variable frequency power supply with strong load adaptability and wide application range by virtue of its advantages of fast heating speed and uniform heating. device. The main structure of the intermediate frequency power supply is: rectifier transformer, thyristor rectifier, freewheeling diode, inverter, connecting rectifier, reactor, and corresponding control loop and protection loop. The intermediate frequency power supply equipment has continuous mode and timing fixed power mode, which can be freely set according to the work needs. Before each start of the inverter, the equipment status will be automatically detected. If there are various states that do not meet the startup status, the inverter will automatically display a fault. point, and block the inverter to reduce the risk of accidents. The operation of the intermediate...
The previously published article “How to judge the operation effect of the intermediate frequency furnace based on the sound? “, it is mentioned that if the electric furnace produces a lot of noise during operation, it is likely that there is a problem with a part, and we need to check it carefully before we can solve the problem. But until we get rid of the problem, the loud noise will pollute the surrounding environment and disrupt the concentration of the staff during production operations. Today, the editor of Hongteng will introduce some methods to reduce the noise of electric furnace. 1. Install soundproof doors It is generally required that on the furnace working platform, the noise at a distance of 1m from the furnace body and a height of 1m should be ≤85dB (deducting background noise). Therefore, when installing sound insulation doors for two intermediate frequency furnace rooms, the sound insulation should be greater than 25dB, and the overall sound insulation performance should be in line with national requirements for medium and low frequency noise isolation. 2. Noise reduction of cooling and ventilation system A large amount of heat generated by the electric furnace needs to be discharged in...
In the metal thermal processing industry, graphite crucibles are used for smelting and casting copper, aluminum, zinc, lead, gold, silver and various rare metals when heated by electric furnaces. Graphite crucible is a kind of refractory vessel, which has the characteristics of high temperature resistance and oxidation resistance. It is an indispensable accessory for intermediate frequency electric furnaces. A good graphite crucible can directly improve the melting quality of electric furnaces. How to choose electric furnace graphite crucible? Today, the editor of Hongteng will share with you some methods for selecting graphite crucibles for intermediate frequency electric furnaces. When choosing, the first thing to pay attention to is the size of the crucible, neither too large nor too small, otherwise it will affect the normal use of the crucible. Choose the appropriate crucible material, there are many types of graphite crucibles, silicon carbide graphite crucibles are more popular now. This kind of crucible is manufactured by pressing and forming process, the quality is generally better than that of graphite, the service life is long, and the heat conduction is fast. After we choose a suitable crucible, we also need to check many aspects when using it. For example, check whether...
The electric furnace uses the principle of electromagnetic induction to realize the heat treatment of metals. It is a device that is very trusted by users. Today we will summarize the performance advantages of induction electric furnaces and the application fields of induction electric furnaces. The first is performance. When the induction furnace is designed, the control circuit board is optimized by computer and optimized by large-scale integrated circuits. It has perfect protections such as overvoltage, overcurrent, undervoltage, water shortage, phase loss, voltage limiting and current limiting. system, thus ensuring the reliability and working stability of the equipment. The system is controlled by a constant power circuit, and the voltage and current are automatically adjusted and set quickly with the change of the charge during production, without too much manual adjustment, and the operation process is simple. In the process of smelting metal, the electric furnace itself has its own electromagnetic stirring function, which has fast melting and heating, easy control of furnace temperature and high productivity. In order to ensure the safe use of the electric furnace, monitoring and diagnostic systems can also be added to the entire set of equipment. When the electric furnace has overcurrent, overvoltage, water...
When we use the electric furnace, the water cooling system is an important part of the whole set of equipment. There are three common layouts of circulating water: Open water cooling tower + pool, Open water cooling tower + plate change + pool, Closed water cooling tower, today Hongteng The editor will introduce the advantages and disadvantages of these three water circulation methods for you. 1. Open water cooling tower + pool The cooling principle is to use the complete contact between the circulating water and the air to reduce the temperature of the remaining circulating water through convection heat exchange and evaporation, and then fall into the lower pool. This method is the simplest, and the initial investment is relatively small, but because of the need for a pool, the overall layout of the entire plant covers a large area. Moreover, in the process of heat exchange between circulating water and air, various impurities in the air will be mixed into the circulating water. Due to the evaporation of the pool, the concentration of impurities will be concentrated. In addition, algae and bacteria will grow on the wall of the pool, which will easily cause scaling of the pipeline....
In the metal thermal processing industry, the induction furnace has the characteristics of fast heating speed, uniform heating temperature, energy saving and environmental protection in the process, and is a very suitable electric furnace equipment for users. When users choose an induction furnace, there are some parameter choices that need to be understood in advance. Xiaobian from Luoyang Hongteng will introduce the selection of induction furnace parameters. 1. Determine the material of the heated metal Induction furnace is a metal heating equipment, which can be used for steel, iron, gold, silver, alloy copper, alloy aluminum, stainless steel and other metal materials. The heating process of various metal materials is different, so when determining the parameters of the induction furnace, it is first necessary to determine the material of the metal to be heated. 2. Determine the heating temperature of the heated metal material For the induction furnace, the most important parameter is the heating temperature. The heating temperature is different for different heating purposes. The appropriate heating temperature should be selected according to the heating process requirements. For example, the heating temperature for forging is generally 1200 °C, the heating temperature for heat treatment and tempering is 450 °C–1100 °C,...
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