The mask quenching furnace is an energy-saving periodic operation furnace with super energy saving structure. The platform is made of anti-collision sealing brick, automatic turning brick organization, automatic sealing platform and furnace door, integrated rail connection, without the need for foundation equipment, and can be used when placed on the horizontal ground and fixed with the bottom cushion iron or expansion screws.

Applications:

It is mainly used for high chromium, high manganese steel castings, ductile iron, roll, steel ball, steel, stainless steel and other quenching, annealing, aging and heat treatment of various mechanical parts.

Structure:

The shell of the electric furnace is welded with steel plate and section steel, and the bottom of the furnace body is connected with the trolley light rail. The user does not need the base equipment, but only needs to put it on the flat cement floor.

The lining of the furnace uses light firebrick as the lining, which saves energy compared with the traditional brick furnace. The long fiber blanket, diatomite brick and vermiculite powder are selected as the thermal insulation materials. The heavy anti-collision brick and heavy high-aluminum anti-pressure brick are selected for the furnace mouth and the car surface.

Between the furnace body and the trolley, the labyrinth refractory material is used to build, and the self-acting sealing structure is used to reduce the heat radiation and convection loss of the electric furnace, and improve the uniformity of the furnace temperature.

The heating element is made of high temperature resistance alloy wire wound into a spiral shape, which is scattered on the furnace side, the furnace door, the back wall and the laying trolley wire shelf brick, and fixed with national standard socket brick, simple and concise. The trolley is equipped with a cast steel furnace bottom plate that is resistant to pressure and high temperature to bear the work parts. In order to prevent the oxidation skin generated after the workpiece is heated from falling into the heating element through the gap between the furnace bottom plate and causing damage to the heating element, the shroud quenching furnace uses piercing touch at the touch point between the furnace bottom plate and the furnace body. In order to operate normally, the oxidized skin under the bottom plate of the furnace is usually purged once a week. When purging, the furnace bottom plate is lifted, and the oxidized skin in the resistance wire groove is purged with compressed air. Pay attention to preventing the oxidation pickup from causing short in the furnace wire. The furnace door equipment is composed of the furnace door, the furnace door lifting organization and the furnace door pressing equipment. The shell of the furnace door is made of solid frame structure by welding of section steel and plate, and the interior is made of stacked refractory fiber modules, which requires good thermal insulation performance and light weight.

The lifting equipment of the furnace door is electric equipment, and the hood type quenching furnace is mainly composed of the furnace door frame, the furnace door lifting beam, the reducer, the sprocket, the drive shaft and the bearing, etc. The furnace door lifting passes through the positive and negative transmission on the reducer to drive the furnace door lifting. The door lift reducer is also equipped with brake equipment, which can help prevent the door from displacing during the lifting process. The domestic spring-type compression structure is selected for the furnace door pressing equipment. When the furnace needs to increase, the dead weight of the furnace door will automatically loosen the furnace door through the lever, and then rise after moving horizontally out of a certain distance. When the furnace door is lowered into place and the pulley on the furnace door is put down to the trolley needs to be pressed tightly, the spring's elastic force will then move the furnace door horizontally into the compacted seal state through the lever. The compression equipment of this structure makes the fiber flat surface on the furnace door and the furnace mouth cotton frictionless, and has the characteristics of good performance and long use.