What are the characteristics of graphite rotors with graphite support rods compared with other rotors?

　　1. In aluminum foil casting, aluminum alloy hub and other aluminum processing industry, the cycle is up to 2 months.

　　2. The rotating refining degasser is divided into movable and fixed mode, which can be applied to different operating environments. The

　　3. Degassing rate is above 50%, the smelting time is shortened and the production cost is reduced.

　　4. is suitable for purifying the aluminum liquid in the crucible furnace, the ladle and the static box.

　　5. Surface after oxidation treatment, the service life is about 5 times of the ordinary product, widely used in the aluminum alloy casting industry.

　　There is a special application in graphite products, that is, the graphite rotor. What is the graphite rotor? The purification process of liquid aluminum alloy is the main means to improve the comprehensive properties of aluminum alloy. In the purification process, mixing the purified gas and solvent and using the rotary injection of graphite rotor to melt the aluminum melt is the most advanced method in the world.

　　Graphite rod support graphite rotor rotating nozzle by high purity graphite, the structure should be considered in addition to the nozzle scattered outside the bubble, the centrifugal force is produced by stirring Aluminum Alloy melt, melt into the gas nozzle and the level of spray mixing, the formation of gas / liquid flow ejected, the contact area and the contact time increases with the aluminum bubble the liquid metal, improve the degassing effect.

　　The rotational speed of the graphite rotor can be controlled by the frequency converter to realize the stepless adjustment, and the maximum can be reached. Graphite rotor specifications, impeller specifications, high purity antioxidant graphite rotor has high strength, high temperature resistance, corrosion resistance and so on. In the process of purifying and degassing, the surface of the aluminum alloy liquid in the box is covered with nitrogen to cover the protection, so that the part of the graphite rotor exposing the aluminum alloy liquid is in the inert gas, so as to prevent the rotor from oxidizing at high temperature and prolong the service life of the rotor.

　　The impeller shape is streamlined, which can reduce the resistance when rotating, and the friction and scouring force between the impeller and the aluminum alloy liquid is relatively small. Thus, the degassing rate is above 50%, the smelting time is shortened and the production cost is reduced. The service life of the surface is about 5 times that of the ordinary product. It is widely used in the casting industry of aluminum alloy.

　　1. It is made of high strength pressed high purity graphite material. It has high strength, strong oxidation resistance and long service life.

　　2, the use of machining centers and CNC machine tools fine machining, high accuracy, good concentricity, jitter in the use of small, effectively prevent high-speed fracture, reduce accidents.

　　3. The graphite turntable has several wheels. When rotating, it can form gas / liquid flow, increase the contact area and contact time between the bubbles and the aluminum alloy liquid, and improve the degassing effect. The friction between the wheel and the aluminum alloy is relatively small. Thus, the degassing rate is above 50%, the smelting time is shortened, and the production cost is reduced.

　　4, the graphite rotor is a liquid aluminum alloy purification process, is to improve the comprehensive performance of aluminum alloy necessary supplies. In the purification process, the purification of gas and solvent, the use of graphite rotor rotating jet to the molten aluminum for purification treatment method, is the most advanced international treatment methods.

　　Graphite rotor is composed of two parts of rotor bar and nozzle. The transmission system drives graphite rotor rotation, argon or nitrogen via the rotor pole, aluminum melt blowing nozzle. High speed rotating graphite rotor into aluminum melt with argon or nitrogen scattered many small bubbles, which are dispersed in the liquid metal, and the rotation of the rotor to hydrogen and inclusions in Al melt diffusion, the bubble contact, bubbles in the melt by the gas pressure difference and surface adsorption principle, absorption melt the hydrogen adsorption and oxidation slag, and with the bubble was taken out of the melt surface, the melt will be purified.

　　Graphite rotor speed can be adjusted by frequency converter to achieve stepless regulation, up to 700 r/min. Specification for graphite rotor diameter of 70mm ~ 250 mm, specifications for the impeller diameter 85mm ~ 350 mm, high purity graphite oxidation rotor has the characteristics of high strength, high temperature resistance, corrosion resistant aluminum flow. In the gas purification process, the surface is Aluminum Alloy liquid nitrogen into the cover, the graphite rotor exposed Aluminum Alloy liquid in an inert gas and prevent the rotor of high temperature oxidation, prolong the service life of the rotor. The impeller is streamlined, can reduce the resistance of rotation, the friction between the impeller and the aluminum alloy is relatively small. So that the gas removal rate is above 50%, the smelting time is shortened, and the production cost is reduced.

　　Using graphite rotor operating technique:

　　1, before using the preheating: graphite rotor immersed in liquid aluminum, above the liquid surface is about 100mm at 5min~10min, to avoid quenching effect on material; must pass into the liquid gas rotor; rotor can be put forward in the surface after the cessation of gas supply, to prevent the rotor nozzle clogging pores.

　　2, the separation of air: in the purification tank room through the nitrogen or argon, to ensure that the box room for positive pressure, isolation of foreign air, to prevent the oxidation of graphite rotor.

　　3, the rotor immersed depth: the reasonable depth of graphite rotor immersed in molten aluminum, to strengthen the surface of aluminum exposed set below about 80mm, soaked in 60mm, which can effectively increase the rotor loss and erosion time antioxidant.

　　4, smooth transmission system: graphite rotor and transmission system is through a connecting rod (pipe) are connected, the connecting rod long deformation under high temperature, or transmission equipment related parts loosening will affect the rotor of neutral and running stability, easy to make the graphite rotor broken or bump damage.

　　5, to pure argon or nitrogen: if the pipeline, connectors and other components of gas leakage caused by argon or nitrogen gas into the aluminum melt is not pure, the upper part of the rotor is oxidized seriously, even make several jet holes at the lower part of the rotor is also oxidized, it will greatly shorten the service life of the rotor.