Zibo Jinpeng Composite Material Technology Co., Ltd

Product Description

 

Aluminum Degassing Graphite Rotor And Shaft are widely used in depuration to dispose hydrogen of Aluminium.
During aluminum and aluminum alloy smelting, hydrogen produced by chemical action with steam diffuse in molten aluminum, which will cause inner structural defect to aluminum products. In order to avoid such defect, most aluminum factories apply dissolved gas floating method to purify molten aluminum. i.e. inert gases such as nitrogen, argon is injected into molten aluminum, and hydrogen will be brought to molten aluminum surface with spread and rise of inert gas.
Rotor and shaft set is necessary to inject inert gas and stir for degassing regarding both intermittent and continuous online degassing methods. Because of properties of heat-resistance, anti-oxidation, high strength and non- infiltration, graphite becomes the optimal choice for material of rotor and shaft, which is named graphite rotor/impeller and shaft set.

 

 

Aluminum Degassing Graphite Rotor
Density: 1.75g/cm³
Apparent manage: anti-oxidation
Application: Aluminum used

Material: 100% high pure molded graphite

 

Application

 

Aluminum Degassing Graphite Rotor And Shaft are degassing (dehydrogen) in molten aluminum or zinc when aluminum hubs and other aluminum parts produced. Our Metal or Resin Impregnated Graphite Parts are widely used in equipments of modern industry, such as seal rings for centrifugal pumps reacting kettle for chemical engineering, hydraulic generators and rotate baking furnaces; piston rings and bushings for compressors oxygen machines and bellows, bearings for screen motors and other types of instruments; slides for motors, subways and mine brushes of electrical machinery and slides for trolleybuses, etc.

 

 

Aluminum Degassing Graphite Rotor And Shaft

50 days at 700°C, 30 days at 1000 °C.

 

 

1. Without contamination of impurities

2. High resistance to high temperature, lower down oxidation speed.

3. Cutomized-machining is available in our factory. We could design and machine the graphite crucibles according to your applicaiton.

 

 

1. Excellent self-lubrication

2. Remarkable chemical corrosion resistance

3. High thermal conductivity and good thermal stability

4. Adequate mechanical strength and shock resistance

 

 

 

 

 

 

 

1. Preheating before using: before immersed in liquid aluminum, the graphite rotor need to be preheated 5 min ~ 10 min around 100 mm above the liquid surface, to avoid effect of quenching on material; pass into the gas before rotor immersed into liquid; stop supplying gas only after putting the rotor out of liquid level, in order to prevent pore jams of the rotor nozzle.

2. Air isolation: pass nitrogen or argon into purification box, ensure the pressure in box is positive pressure, and isolate outside air, to prevent the oxidation of the graphite rotor.

3. Rotor immersion depth: reasonable depth of graphite rotor immersed in aluminum melt, making the strengthening cover exposed 80 mm or so above aluminum liquid, immersed in liquid 60 mm or so below the liquid, this can effectively increase the loss of oxidation and the time of erosion wear.

4. Stable transmission system: graphite rotor and driving system is connected by connecting rod (tube). The deformation of linking rod under the long time high temperature, or the loose of transmission equipment related sites, will affect the running stability of the rotor, and easy to make the graphite rotor broken or damaged.

5. Purity of argon or nitrogen: if the impurity of argon or nitrogen caused by the air leakage of pipeline and joint parts, can make the upper rotor severely oxidized, and even make the lower several rotor jet hole oxidized, this will greatly shorten the service life of the rotor.

 

 

 

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