Product Description
Graphite rotors, impellers and shafts 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.
Specification:
Aluminum Degassing Graphite Rotor
Density: 1.75g/cm3
Apparent manage: anti-oxidation
Application: Aluminum used
Application:
For degassing (dehydrogen) in molten aluminum or zinc when aluminum hubs and other aluminum parts produced.
Advantage:
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.
Properties:
1 Excellent self-lubrication
2 Remarkable chemical corrosion resistance
3 High thermal conductivity and good thermal stability
4 Adequate mechanical strength and shock resistance
Material index
Max Grain size |
mm |
0.8 |
0.8 |
Bulk Density |
g/cm3 |
≥1.72 |
1.75 |
Electric Resistance |
μΩ.m |
≤9 |
8.3 |
Bending Strength |
MPa |
≥14.5 |
17.5 |
Compressive Strength |
MPa |
≥32 |
40 |
Thermal Conductivity |
W/(m.K) |
≥120 |
140 |
C.T.E(100-600)℃ |
10-6/℃ |
≤2.8 |
2.4 |
Ash Content |
% |
≤0.2 |
0.09 |