Alumina Ceramic Lined Elbow
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Τεχνικές παράμετροι
Alumina ceramic lined elbow
Ceramic lined elbow is an ideal corrosion resistant pipeline. It has high temperature resistance, wear resistance, impact resistance, acid and alkali corrosion and easy construction. It is an ideal pipeline for conveying granular materials, grinding and corrosive media. Alumina ceramic lined elbow are widely used in oil, electric power, metallurgy, mine, etc.
Characteristic
Excellent wear resistance: not easy to wear and tear, strong durability
High hardness: 88-96.5 HRA
Good heat resistance: high mechanical strength, can be used in high temperature environment.
Parameter index
Item/Product | HA92% | HA95% |
Al2O3 (%) | 92±0.5 | 95±0.5 |
Bending Strength(MPa) | ≥220 | 0010010 gt;280 |
Fracture Toughness (MPam ½) | 0010010 gt;3.6 | 0010010 gt;3.9 |
Rockwell Hardness (HRA) | 0010010 gt;82 | 0010010 gt;88 |
Wear Volum (cm3) | 0010010 lt;0.5 | 0010010 lt;0.3 |
Density (g/cm3) | 0010010 gt;3.6 | 0010010 gt;3.7 |
Viker Hardness (Hv50) | ≥1050 | ≥1150 |
Details of alumina ceramic elbow
The coal will bring great impact to the equipment during transportation in the coal handing system of power station, so the alumina ceramic tiles s not available and they will fall of by large area.
The valve in the desulfurization system can change the follow during the switching process, sot he slurry with grain at high speed will wear out the pipe at the ends of valves. The liquid in the tube contains much sulfite which is very corrosive, so usually nonmetallic pipes like rubber tubes and PVC pipes are used to avoid corrosion, but the wear resistance of these tubes are poor that the straight pipe at the ends of valves always worn out. The alumina ceramic lined tube/elbow is one piece, the slurry couldn’t permeate through it, moreover, the alumina tube/elbow has high hardness and the process by isostatic pressing dry power is favorable to the uniformity of ceramic crystal structure, so its wear resistance is better than ceramic tiles with the same materials.
The weakest place is the gap between each sticked tiles during material handing. The material grains not only wear the pipe but also have impact on it. This is why the pipelines lined by tiles are easily worn out and fallen off.
The experiment shows that the service life of ceramic tube/elbow is at least 5 times longer than ceramic tiles of the same thickness.
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