address:No.10, Lane 669, Min Ta Road, Songjiang District, Shanghai, China
phone:189-1713-2726
email:qianghaibin@sh-yhcd.com
The medium frequency quenching furnace is a device that converts the industrial frequency AC 50Hz into an medium frequency (above 300Hz to 8000Hz). It reduces the voltage and increases the current through the medium frequency water-cooled transformer to generate high-density magnetic lines in the induction coil and cut the metal material in the induction coil. The metal material produces a large eddy current, generates high heat, and completes the quenching process of the workpiece.
Medium frequency quenching furnace is widely used for:
1. Smelting of non-ferrous metals and ferrous metals: smelting of steel, alloy steel, special steel, cast iron and other ferrous metal materials, as well as stainless steel, zinc and other non-ferrous metal materials; smelting and heating and insulation of non-ferrous metals such as copper and aluminum, and can be combined with blast furnaces Perform tandem operation.
2. Forging heating: used for heat penetration and temperature replenishment of bars, round steel, square steel, steel plates, online heating of blue quenching blanks, local heating, and online forging of metal materials (such as gears, half-shaft connecting rods, bearings, etc. ), extrusion, hot rolling, heating before shearing, spray heating, hot assembly, and overall quenching and tempering, annealing, and tempering of metal materials.
3. Heat treatment and tempering production line: mainly provides surface heat treatment of shafts, gears, sleeves, rings, discs, machine tool screws, guide rails, planes, ball heads, hardware tools and other mechanical (automobile, motorcycle) parts, and overall quenching and tempering, annealing, tempering of metal materials.
4. The quenching transformer is used as an impedance matching device for the thyristor medium frequency power supply and the induction heating load circuit. It can be used for heat penetration, quenching, etc. of metal materials on various occasions. Compared with other casting equipment, the medium frequency quenching furnace has high thermal efficiency, short melting time, less burning loss of alloy elements, a wide range of melting materials, less pollution and the ability to accurately control the temperature and composition of molten metal.
5. Our company's latest transformer of this type has an operating frequency of 2500Hz and uses 23JGH90 silicon steel sheets. Taking into account the core's medium-frequency heating, the core has a built-in core water-cooling heat exchanger. Taking into account the user's on-site impedance matching, the design has flexible turns ratio adjustment and compact structure. Using double turns in parallel, the primary side is connected in series to achieve 8-12 adjustable turns, and the secondary side is connected in parallel to achieve large current output. The primary and secondary sides are staggered. The overall leakage inductance is small. And it is easy to use.
1. Considering the influence of proximity effect and skin effect at intermediate frequency, the current is more concentrated in the staggered part of the conductor. The thermoforming process is used to ensure that the coil is flat and the primary and secondary coils are closely adhered to reduce the influence of proximity effect and skin effect
2. Considering the on-site impedance matching, the design has the characteristics of flexible turns ratio adjustment and compact and reasonable structure. Using double-turn parallel winding, the primary side is connected in series to achieve 8-12 adjustable turns, and the secondary side is connected in parallel to achieve large current output
3. The coil adopts an overlapping type with many changes in turns ratio. The primary and secondary sides can be arbitrarily combined into odd and even turns ratios as needed to suit different users and different load matching. The coil is positioned and shaped by tooling to ensure dimensional accuracy and meet design requirements
4. The working frequency of copper is 2500Hz. The silicon steel sheet is made of 23JGH90 material. Considering the medium frequency heating of the iron core, the iron core has a built-in iron core water-cooling heat exchanger
5. There must be a water source for cooling in the use site. The water pressure of the cooling water is required to be 0.25MPa-0.4MPa. There must be no mechanical impurities in the cooling water and the hardness must not exceed 10 units. When the transformer is put into operation, water will continue to enter. The inlet water temperature shall not exceed 33°C, and the outlet water temperature shall not exceed 45°C.
