12 10月 Foundry Double Rotor Deaerator
Foundry Double Rotor Deaerator
The Double Rotor Deaerator is designed for on-line degassing of aluminum fluids with high flow rates, high gas content and high inclusions. It has two independently controllable steering rotors with opposite rotations to provide more powerful agitation. Gas capacity, the equipment is directly placed on the flow trough, can be hoisted by horizontal crane or replace the loss parts, good thermal insulation design can provide 24-hour online uninterrupted degassing.
Double rotor deaerator aluminum liquid on-line degassing refiner: double rotor deaerator as a hanging rotary degassing and decontamination device, degassing medium is recommended to use nitrogen or argon with a purity of 99.996% or more (considering Nitrogen is recommended for argon cost. The device is equipped with a gas under-pressure alarm function. When the inert gas is lifted, the source pressure drops to a limited pressure, and the alarm can automatically alarm through the warning light to prompt the operator to replace the gas source in time to avoid the occurrence of unqualified aluminum liquid due to lack of gas. The equipment has dual rotors. When the equipment is used as an online degassing equipment, please prepare the spare air source in advance to facilitate timely replacement during undervoltage.
Features of the double rotor degasser:
1. The two rotors rotate in the opposite direction, which can stir the metal melt more strongly and evenly, improve the stronger degassing efficiency, and provide timely degassing for more aluminum liquid.
2. The installation and positioning of the equipment is simple. After the placement, in addition to replacing the loss parts, basically no need to move again!
3. The two rotors can independently control the speed and gas flow.
4, simple control, using button operation, degassing time can be set (0.01 seconds ~ 999 hours adjustable or unlimited), there are automatic / manual control mode, generally automatic control when online use.
5. When the set degassing time is completed, the rotor will automatically stop and the air supply will be automatically turned off. The indicator flashes to alert the operator, and the safety is high. When it is used as an online degassing, it can operate continuously and continuously.
6. Using nitrogen or argon as the degassing medium, the advanced degassing principle greatly reduces the degassing time, improves the efficiency, reduces the refining cost, has no pollution to the environment, and greatly improves the working environment.
7. The inert gas flow can be controlled, and the optimal setting can be made, which can greatly reduce the waste products caused by bubbles and inclusions, greatly improve the yield and improve the mechanical properties of the castings.
8. Provides stable and repeatable degassing effect, which can achieve efficient production for customers without affecting the production process.
9. There is no corrosion on the ladle or the boiler lining.
10. The equipment spindle and motor are equipped with air cooling device, which can effectively reduce the working temperature of the spindle and motor and prolong the service life.
11. The bottom of the equipment is equipped with an insulation layer with excellent thermal insulation performance, which can prevent the deformation of the equipment caused by the high temperature of the aluminum liquid.
12. The emergency shutdown button is set, the switch machine is simple and safe, the structure is firm, the maintenance is simple, and the maintenance requirements are low.
The principle of the double rotor deaerator is: the aluminum liquid is stirred by the controlled rotating graphite shaft and the rotor, and the metered inert gas is pressed into the aluminum liquid through the rotor and broken into fine bubbles, so that it is uniformly dispersed in the liquid metal Because of the high hydrogen partial pressure in the aluminum liquid, the hydrogen in the aluminum liquid continuously diffuses into the bubbles, and some non-metallic inclusions in the aluminum liquid are adsorbed on the surface of the bubble, and the useless hydrogen and some non-metallic inclusions adhere. The inert gas bubbles float up to the liquid surface. When there is a special degassing filter box, the impurities are isolated before the pouring, and then the desulfurization and deoxidation inclusions are achieved by the slag, and the degassing principle is also recognized. High efficiency and good effect, does not affect the production process, can improve the purity of aluminum liquid in a short period of time, reduce the scrap rate, improve production efficiency, improve the mechanical properties of castings, enhance the competitiveness of products, which is the traditional degassing method. What can’t be achieved.