The service life of wear-resisting Mosaic lining piece: the service life of wear-resisting ceramic piece besides the quality that concerns with its itself outside, one of important factor is exterior factor, it basically includes medium grain size, hardness, friction way, environment, load, scour speed, temperature and time to wait.Generally speaking, the smaller the particle, the lower the concentration, the lower the scouring speed, the smaller the scouring Angle, the longer the service life of wear-resisting ceramic sheet.Usually in the network tube of the slag powder production line, the specific surface area of the powder is 420 ~ 450m2/kg, the concentration is 350g/Nm3, the speed is 28 ~ 30m/s, the erosion Angle is 30℃, the 20mm wear-resistant ceramic sheet can be used for 8 ~ 10 years.Raw grinding and clinker grinding materials are easier to grind than slag, the same thickness of wear-resistant ceramic sheet, service life can reach more than 10 years.
Characteristics of wear resistant alumina microcrystalline lining: 1, high hardness, wear resistance, erosion resistance: 92 porcelain, 95 porcelain alumina wear resistant ceramic pieces, rockwell hardness of hra85-95, comparable to diamond, wear resistance is far higher than manganese steel and high cast iron, in the same working conditions can extend the service life of equipment more than 10 times;2. Excellent resistance to high temperature and heat: it can run for a long time at 750℃;3. Resistance to acid and alkali corrosion: alumina wear-resisting ceramic sheet has stable chemical properties, resistance to acid and alkali corrosion, anti-oxidation, and adaptability to various harsh working conditions;4, light weight: wear-resistant ceramic sheet density of 3.5 -- 3.8g/cm3, only half of the steel, can greatly reduce the load of equipment;5, strong bonding, not easy to fall off: wear-resistant ceramic pieces can be used to resist high temperature inorganic adhesive paste, arch joint and stud welding and other fixed ways, can ensure that the ceramic pieces in high temperature, high impact conditions for a long run not to fall off.
The process of repairing the pipeline with wear-resisting alumina microcrystalline lining: clean the pipeline surface → repair the body → polish and smooth → paste this article → welding → thickness detection → self-inspection.
Preparation: material purchasing, equipment debugging, construction personnel arrangement, power connection, air supply, etc.
1. Clean pipe surface: effectively remove dirt, rust and other sundries.
Ii. Polishing: the pipe wall is treated by an Angle grinder, and it is required that the pipe wall is free from floating rust and looseness.Strictly prohibit in the humidity more than 85% of the environment construction, ensure the project quality to reach excellent standards.
Three, isolation measures: after the removal of debris, should be kept in the electrostatic dry environment, to prevent dust pollution.
4. Paste the micro-crystalline wear-resisting alumina lining: mix part A and part B in proportion, paste the ceramic evenly after mixing, evenly grind the ceramic parts, without virtual adhesion and protruding phenomenon, the wear-resisting ceramic layer is smooth, the gap between plate and plate is less than 0.4mm.The ceramic plate has smooth seams.
Five, welding: the hardware glue placed in the ceramic lining board of the hole, welding the full length of the welding machine, with the ceramic cap will be pasted on the surface of the hardware.
Vi. Self-inspection: after attaching the ceramic parts, self-inspection shall be conducted, and the unqualified parts shall be reprocessed, and then self-inspection shall be conducted.
Anti-wear technology advantage of wear-resisting Mosaic lining:
1. The hardness is higher than HRA 86, second only to diamond, and far beyond the wear resistance of wear-resisting steel and bimetal composite plate.Wear-resisting ceramic sheet adopts 95%Al203 to add a variety of unique wear-resisting material formula, which has the characteristics of high density, high toughness and wear-resisting.Second, excellent wear resistance, wear resistance equivalent to manganese steel 266 times, high chromium cast iron 171.5 times.Under the same working conditions, the service life of the equipment can be extended at least ten times.
Three, light weight, only half the weight of steel, can greatly reduce the load of equipment.
Iv. The Cr203 and Ti02, which are very similar to the lattice of A1203, are introduced into the formulation of shock resistant and wear resistant ceramics.Meanwhile, zinc oxide whisker was added in the sintering process to form solid grain with A1203, refine grain size, promote sintering and improve fracture toughness.The fracture toughness of fine wear-resistant ceramics is kic (>4.8 Mpa/m).
The adhesive has strong strength and good heat resistance.To ensure that the wear-resistant ceramic pieces do not fall off for a long time under high temperature.
