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Wear-resistant Ceramic Tube Characteristics

Source: Editor:Goldpro Visit: Release time: 2013-06-20 16:14:22

With the wide application of abrasion resistant ceramic tube in life, its characteristic is gradually showing:

1. Lined ceramics are of high strength, high hardness and light weight

Centrifugal casting composite ceramics, the alumina layer hardness up to HV1100-1400, the equivalent of tungsten carbide, and the ceramic composite pipe weight is only 1/4 of wear-resistant steel pipe, which is easy to install and replace.

Corundum ceramic Rockwell hardness is HRA80-85, and the hardness is much higher than that of wear-resistant steel and stainless steel. The density is only half of the ceramic pipe sticking steel, and the weight is only 1/3 of wear-resistant steel pipe.

2. Excellent wear resistance, and could be continuously use for more than 10 years.

Wear-resistant elbow centrifugal casting ceramic composite (corundum ceramics) in 9100000 KW units, the use of coal ash up to 45%, each tube feeding powder 42 tons per hour, after 24 months of use wear out 0.2mm, and pneumatic conveying of dry ash, which is 74 tons / hour, the flow rate was 20m/s and the concentration is 28%, which the position is in the gray level corner. After 12 months of wear out 0.15mm wear-resistant elbow on a ceramic sheet, the determination of the Central Institute of Powder Metallurgy Research, 266 times of the wear resistance of manganese steel of special ceramics and 171.5 times of high chromium cast iron, and with excellent wear resistance. Wear-resisting bend in the application of the pulverizing system greatly reduces the wear of equipment. According to the field experience of more than ten years, the durable time is at least 10 years, which can reduce the repair frequency and cost.

3. Smooth inner wall, with no blocking powder

Centrifugal casting ceramic composite belongs to the whole ceramic, there is no gap, and surface is smooth, which does not exist inside the ceramic high bottom view.

By high temperature sintering, the Ceramic plate structure compact, and grinding deburring processing surface finish to ensure smooth transition. The SMT process are in strict accordance with the operating instructions., tiles, the height difference is no more than 0.5mm, mount ceramic pipe inner wall is smooth without blocking powder.

4. Mount firmly, heat resistant and good corrosion resistance

 

Centrifugal casting ceramic composite, ceramic pipe corundum melting point is 2045 ℃, due to technical reasons of special structure of alumina layer and the steel layer, the stress field is special. When the temperature rises to 900 ℃, then put ceramic tube came into the cold water repeated several times, the ceramic layer does not crack, showing the thermal shock resistance of ordinary ceramic, the ceramic pipe inner compact is the alpha type aluminum oxide, the acid resistance is 96-98%. The aluminum oxidation is neutral oxide, acid, alkali, salt and no chemical reaction. The aluminum oxide is the inorganic substances, the long-term effects of light, heat, oxygen and other natural environments, no bad performance (i.e., the aging problem). By the determination of corrosion resistance of the ceramic pipe, it is ten times higher than that of stainless steel.


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