There are many clients who are concerned about the specification of ceramic lined tile sheet, because it is related to whether the ceramic chip purchased can be used. Wear resistant ceramic lining is AL203 as the main material, with rare metal oxide as solvent, after more than 1700℃ high temperature roasting to special ceramic, embedded into rubber, polyurethane or mild steel for the purpose of low to moderate impact and highly abrasive sliding application.
Main performance indicators: The wear resistance of the ceramic work surface is more than 100 times that of manganese steel, 20 times that of high chromium cast iron, and several times to several dozen times higher than that of wear resistant rubber. Ceramic metal bonding strength up to 300kg/cm2 can be used up to 500°C.
The use of equipment made of wear-resistant ceramics, the service life can be increased by more than five times, and the performance-cost ratio can be increased by more than three times.
Wear-resistant ceramic performance characteristics
The wear-resistant hard ceramic tile is a special corundum ceramic made of AL2O3 as raw material, rare metal oxide as solvent, and sintered at a high temperature of 1730 ° C. The hardness is HV1400-1600. It has high wear resistance and is suitable for environments with severe wear. It can withstand a certain impact force and can work under harsh conditions of the working environment. The wear resistance of the wear-resistant ceramic patch is 280 times that of manganese steel. HXW high temperature resistant inorganic adhesive is an imported adhesive purchased by our company. It has excellent adhesion, processability and thixotropy to both steel and ceramics; it can be cured at room temperature; it has quite high strength and toughness; high heat resistance and aging resistance.
The ceramic tile is pasted on the steel pipe with high temperature wear-resistant glue to play a wear-resistant role, and the pipe is generally white. Generally used for large diameter pipes.
Advantages: ceramic tile lined pipes have good wear resistance (than self-propagating combustion), and have a long service life.
Why Ceramic Coating
Welding wear-resistant ceramic pipes is to stick the alumina ceramic lining tile with holes in the middle of the inner wall of the pipe with strong adhesive, and at the same time, with the spot welding process, the ceramic liner plate is firmly welded to the inner wall of the steel pipe through the small holes. Ceramic tile lined pipes are mainly used in power plant coal powder, ash, mine powder, tailings, backfill, coal mines, coal in beneficiation plants, coke particles in coking plants, and materials in sintering plants.
- Ceramic coating is used by the OE’s extensively on 2007 & newer exhaust.
- Ceramic coating is recommended for parts that are exposed to extreme heat.
- Ceramic coating is used inside of chrome stacks to reduce the outside temperature of the pipe.
- Ceramic coating will increase the longevity of the chrome stack.
- Ceramic coating produces more usable power.
- Ceramic coating protects parts from thermal fatigue.
Process flow of pasting ceramic tiles
The ceramic tile is pasted on the steel pipe with high temperature wear-resistant glue to play a wear-resistant role, and the pipe is generally white. Generally used for large diameter pipes.
The main technical indicators of alumina ceramic tiles
| Item | Index |
|---|---|
| Alumina content | ≥92％(other TIO2,ZrO2) |
| Dnsity | ≥3.6g/cm ³ |
| Rockwell hardness | ≥85HRA |
| Compressive strength | ≥850 Mpa |
| Flexural strength | ≥290Mpa |
| Durability | ≤0.0002g(p=76N n=800r/min t=30min) |
| Ceramic thickness | 5-25mm |
Ceramic tile lined pipe and fittings
Features
The Rockwell hardness of the ceramic tile is HRA80-90, the hardness is second only to diamond, far exceeding the wear resistance of wear-resistant steel and stainless steel.
Its wear resistance is equivalent to 266 times that of manganese steel and 171.5 times that of high-chromium cast iron.
The density of the ceramic tile is 3.5g/cm3, which is only half of that of steel, which can greatly reduce the load of the equipment.
The wear-resistant ceramic tile is pasted on the inner wall of the device with heat-resistant super glue. It can run for a long time at 350°C without aging, and the inorganic adhesive used for cemented products can withstand a temperature of 750°C. The temperature resistance and adhesion performance of the adhesive are far ahead in China.
The toughening formula of ceramics can form strong crystal bonding bonds, which greatly enhances the impact resistance of alumina ceramics.
According to our customer follow-up survey for more than ten years, under the same working conditions, the service life of the equipment can be extended by at least ten times.
Production requirements for the process of pasting tiles on the inside of steel pipes
The ceramic tiles are pasted to the inner wall of the steel pipe with high temperature wear-resistant glue to play a wear-resistant role.| No. | Process | Standard | Inspection |
|---|---|---|---|
| 1 | Cleaning the inner surface of the fitting | Clean up all the rubbish and floating ash on the inner surface of construction equipment and pipe fittings. | Checked by the construction supervisor. |
| 2 | Rust removal, oil removal, paint removal | The rust, grease, and paint on the bonding surface must be completely removed without leaving any traces. Use iron sand skin, angle grinder, and soft sand skin to polish to see the metallic luster. After cleaning, wipe the surface with a cloth until there is no trace of dirt. | After the inspection and acceptance by the quality inspector, the construction of the next process can be carried out. |
| 3 | Formulated Adhesives | It must be measured in strict accordance with the prescribed proportion, and how much should be used; it must be stirred evenly, and the overall mixing should not be less than 4 times; if the mixed embedded material is added, the binder must be mixed well before adding the mixture and mixing Not less than 3 times. | Assigned by designated personnel. |
| 4 | Repair of the adhesive surface | If there are potholes on the pasting surface, especially if there are large potholes on the pasting surface of the old equipment, the wear-resistant ceramic sheet must be gradually filled with embedded materials. | After the inspection and acceptance by the quality inspector, the construction of the next process can be carried out. |
| 5 | Paste wear-resistant ceramic tiles | There should be no dust or dirt on the surface of the ceramic tiles. The surface of the repaired inlay material must be leveled. The pasting surface must be wiped again. Scrape the adhesive on the pasting surface for 1-2 times and scrape it flat. Scrape the back of the ceramic sheet for 1 It is necessary to ensure that there is a certain thickness of uniform adhesive available for pasting. | Checked by the person in charge of the construction of the pasted ceramic tiles. |
| 6 | Repair of gaps and corners between ceramic tiles | The gaps exceeding 3 mm must be repaired with wear-resistant and anti-corrosion fillers, the edges and corners must be neat, and the bevels must be trimmed with special ceramic tiles and then filled with fillers. | After the repair, the person in charge of the construction and the quality inspector will conduct a comprehensive quality inspection, and submit it to Party A for acceptance after passing the inspection. |
| 7 | Maintenance time | After construction and repair are completed, it can be put into use after natural maintenance for more than 12 hours after acceptance by Party A. |