Immersed electric holding furnace is different from traditional furnace body radiation heating. It is a specialized high-temperature resistant sealed electric heating element that is completely immersed in the molten aluminum liquid and directly contacts the molten liquid to generate electricity and heat. The mainstream is the crucible free open melt pool structure, which uses electrical energy as the heat source and is specifically used for constant temperature storage of aluminum alloy molten liquid, machine side insulation, and continuous supply of soup. It is a core supporting thermal equipment for die-casting, gravity/low-pressure casting.
Three phase 380V AC power is connected to the furnace electrical control system. After the electrical energy is converted into heat energy, the fully sealed immersion heating plate/heating rod is completely submerged below the liquid level of the aluminum melt. The heat is directly conducted through the metal melt, and the temperature of the entire furnace is uniform through natural convection of the aluminum melt; Equipped with PID intelligent temperature control for real-time collection of molten temperature, the heater is started and stopped to maintain the set constant temperature (usually 650-750 ℃).
Product Features
(1) Extreme energy saving and low electricity cost: The heat source is directly immersed in the melt, without any intermediate medium for heat dissipation, and the energy consumption is only 1/2~1/3 of the same capacity radiation electric furnace. The electricity cost per ton of aluminum is reduced by more than 30%, and the annual energy saving of large-scale die-casting production is significant.
(2) Aluminum liquid has high quality and extremely low oxidation loss: there is no high-temperature hot air flow baking on the surface of the aluminum liquid, the liquid surface temperature is low, the amount of aluminum oxide generated is reduced by more than 70%, the amount of slag removal work is greatly reduced, the burning loss is less than 0.4%, the loss of aluminum raw materials is reduced, the porosity and slag inclusion rate of castings are significantly reduced, and it is suitable for precision die-casting and high-end aluminum alloy casting production.
(3) Uniform temperature inside the furnace: uniform heat conduction from inside to outside, with a temperature difference of ≤ 5 ℃ between the upper and lower parts of the aluminum liquid in the entire furnace, to prevent component segregation caused by upper heating and lower cooling, and ensure the consistency of casting materials.
(4) Easy maintenance and repair: If a single heating element fails, it can be removed and replaced separately, without the need to drain the aluminum liquid in the furnace and stop production; Non stick aluminum lining is less prone to aluminum agglomeration, and the cleaning cycle is 2-3 times that of traditional furnaces, with fewer operation and maintenance hours.
(5) Environmental protection and safety, no pollutants: fully electric heating, no gas exhaust gas, no smoke and dust emissions; The furnace body has excellent insulation, low workshop environment temperature, multiple electrical safety protections, and high production safety.
