When selecting pulverized coal pipelines in power plants, the main consideration is the safety, stability, production efficiency, and production cost of production. Ordinary metal pulverized coal pipelines are prone to powder leakage and wear through due to severe wear and tear, requiring frequent maintenance and replacement, reducing the cost of Production efficiency increases production costs.
With the continuous development of science and technology and the continuous innovation of materials, the ceramic tile lined elbow has shown obvious advantages. Alumina ceramics are known for their high wear resistance, high hardness, oxidation resistance, corrosion resistance, and extremely high resistance High and low-temperature strength properties, have become one of the most widely used wear-resistant materials.
Ceramic tile lined elbow is to use high temperature resistant strong adhesive to paste alumina or zirconia wear-resistant ceramic sheet on the inner wall of the pipe, and then heat and solidifies to form a firm anti-wear layer. Ceramic patch pipes have excellent wear resistance, corrosion resistance, heat resistance, and other properties. After grinding, calcining, embryo pressing, sintering, and other processes, corundum ceramics with hardness exceeding RHA88 are finally formed, and the pipeline can run smoothly in a high-temperature environment of 350 °C.
Product Parameters
| Items | Specifications | |
| Content of alumina | ≥92% | ≥95% |
| Density | ≥3.6 g/cm3 | >3.8g/cm3 |
| Rockwell A hardness | ≥82HRA | ≥85HRA |
| Impact strength | ≥1200 MPA | ≥1500 MPA |
| Fracture toughness | ≥3.8MPa·m1/2 | ≥4.0MPa·m1/2 |
| Vickers hardness | ≥1150HV10 | ≥1200HV10 |
| Bending Strength | ≥290MPa | ≥330MPa |
Product Features
Wear resistance: The alumina content in the wear-resistant ceramic sheet is greater than 92%, the hardness HRA is ≥ 85, and the wear resistance is ten times higher than that of quenched carbon steel, which is better than that of tungsten-cobalt carbide;
Corrosion resistance: The wear-resistant ceramic sheet can resist various inorganic acids, organic acids, organic solvents, etc., and the corrosion resistance is more than ten times that of stainless steel;
High-temperature resistance: The ceramic layer is dense corundum, its expansion coefficient is 6-8*10-6/℃, it has excellent heat resistance, can run at 350℃ for a long time, and can meet the general working conditions;
Staggered seam pasting: The pasting technology is advanced, and the wrong seam pasting method is adopted along the flow direction of the medium to avoid the formation of grooves and gaps along the wind direction.
Production Process
| NO | Process | Standard |
| 1 | Clean the surface, sand, and dust. | In order to ensure the sticking effect of the ceramic sheet, the sticking position of the pipe should be finely polished before installation to remove rust, and the surface should be cleaned with alcohol and related thinners to ensure that the surface is clean. |
| 2 | Adhesive formulation | Prepare the viscose according to the proportion and try to use it within half an hour. Before use, be sure to stir well to ensure that the ingredients are fully mixed. When applying glue, it should be applied evenly, the adhesive surface and sides should be covered with glue, and there should be no glue leakage. |
| 3 | Viscose curing | After the adhesive is applied, press firmly and fill the gap between the tiles when applying the porcelain. After the porcelain is applied, it needs to be cured for 24-48 hours before use. |
Industry ApplicationTailings transportation, limestone transportation, coal powder transportation, mineral powder transportation, dust removal system, ash discharge system, slag transportation, slag transportation, cement transportation, river sand transportation, etc.
Precautions
| NO | Production Notes |
| 1 | In the process of handling and installation, the wear-resistant ceramic patch pipe needs to be handled with care to avoid violent collisions and hard objects hitting the ceramic end face. |
| 2 | When installing the tile lining elbow, the center line of the ceramic pipe should be aligned with the center line of the pipe to be connected, and the height of the connecting part should be leveled to ensure that the two ends are connected accurately, and the end surface misalignment should be controlled within 1 mm. |
| 3 | The wear-resistant ceramic patch pipe has strict directionality in the way of porcelain affixing inside the pipe. When installing the ceramic pipe, the direction of the conveyed fluid and the connection gap should be consistent according to the technical requirements, so as to reduce the erosion and wear of the pipe. |
| 4 | Most of the wear-resistant ceramic patch pipelines transport fluids such as powder, gas, and liquid. In order to ensure safe transportation, it is necessary to strictly check the tightness of their connections during installation to prevent fluid leakage. |
| 5 | In order to prevent the flange from rusting or wearing during transportation and storage, we need to oil the flange and cover it with a protective cap to protect the flange. |
| 6 | Wear-resistant ceramic patch pipes need to be numbered according to the drawings to avoid errors and omissions during production and installation. |
| 7 | In the process of installing the wear-resistant ceramic patch pipe, it should be installed from both ends to the middle, which is convenient for adjustment, and the accumulated error should also be considered during installation, which should be eliminated by pipe adjustment before the installation is completed. |
| 8 | In order to increase the firmness of the flange connection, try to weld the lifting lugs at the port of the wear-resistant ceramic patch pipe. |
Our Advantages
1. The factory is a manufacturing enterprise dedicated to the production, design, research and development of wear-resistant ceramics for 15 years
2. Years of actual industry experience can provide the best and best anti-wear design plan for enterprise equipment
3. The perfect after-sales service system allows customers to have no worries
4. For ceramic tile lined elbow, we adopt the staggered pasting process. The staggered arched patching process is designed to solve the powder and slurry conveying system that is particularly severely worn by the wear-resistant ceramic pipes, so as to form a firm anti-wear layer, and the ceramics will not fall off.
