Spray areas: power plant air preheater
Work status: boiler air preheater
Solution: high-speed electric arc spraying/subsonic spraying
Spraying material: high temperature resistant ceramic metal corrosion resistant material
Use effect: improved corrosion wear life of 3 to 8 times erosion wear resistance, high temperature resistant material, can effectively prolong boiler repair cycle
Areas of application: pulverized coal fired boiler in power plant of circulating fluidized bed boiler and four tubes (water wall, superheater, reheater, section coal or fuel economizer) thermal spraying anti-corrosion, but also to leakage failure of the power plant steam turbine cylinder head in combination with surface thermal spraying corrosion resistant material to fix, and exhaust fan, fan impeller, the pulverized coal system of wear intensive repair, hydropower turbine flow, gate shells, decompression drainage tube, wheel, guide vane ring, cover and cavitation erosion protection, thermal spraying crankshaft abrasion repair, diesel generators, wind power generator base spraying
Coating products processing:
The company has domestic leading supersonic HVOF flame, plasma, automatic power, the supersonic electric arc spraying technology of three spray coating,
1, plasma spraying processing: high-performance ceramic coating, spray coating materials including aluminum oxide powder, chrome oxide, titanium oxide, zirconium oxide, molybdenum carbide, etc.
2, the supersonic fuel (HVOF) spray processing, spraying hard alloy, metal ceramic coating, coating materials including tungsten carbide powder, nickel chromium carbide, chromium, nickel, chrome, etc.
3, speeding the arc spraying processing: spraying line wire stainless steel, zinc, aluminum, copper, lead, molybdenum, babbitt and so on all sorts of function coating.
4. The subsonic flame spraying materials include: chrome nickel chrome carbide, tungsten carbide composite powder, aluminum oxide, titanium oxide ceramic powder preparation of ideal spray coating/wire: including T8, MO (MO) low carbon steel, stainless steel, copper, AL203, AL (aluminum), zinc (Zn)
5.. Imported equipment America PRAXAIR supersonic spraying, Miller plasma equipment to undertake the thermal spraying process has the ability of hundreds of pieces processing, coating products
Coating material is introduced:
The thermal spraying material and coating function and application
A: thermal spraying materials
Has been realized in the practical application in industrial production of coating materials such as metals, alloys and ceramics, mainly used in powder, wire and bar state, including spraying powder for spraying materials more than 70% of the total amount. Used as a coating material are:
1, thermal spraying powder
Pure metal powder: W, Mo, Al, Cu, Ni, Ti, Ta, Nb, etc
Alloy powder: Al - Ni, Ni - Cr, Ti, Ni, Co - Cr - Ni - Cr - Al, W, MCrAlY (M = Co, Ni, Fe), Co, Ni, Fe base metal, etc
Oxide ceramic powder: Al2O3, ZrO2, Cr2O3, TiO2, etc
Carbide powder: WC, TiC, Cr3C2, etc
Metal ceramic powder: WC - Co, Cr3C2, NiCr, etc
Plastic powder: nylon, polyethylene, PPS etc
2, thermal spray wires
Al, Cu and zinc, Sn, Al - zinc alloy, babbitt alloy, stainless steel,
Ni - Al wire, etc.
3, thermal spray bar
Al2O3, ZrO2, Cr2O3, etc
B: coating functions and applications
To achieve high temperature oxidation and hot corrosion resistance coating
For some exposure to high temperature corrosion in the gas components, by high temperature, gas corrosion, and the function of air flow scouring, seriously affected the life and safe operation of the equipment. In addition to high temperature oxidation and hot corrosion resistance of materials must be resistant to high temperature oxidation and corrosion, must also have similar to the substrate material coefficient of thermal expansion, the party won't be caused by local overheat temperature cycle and the coating thermal fatigue performance degradation. Used as high temperature oxidation and hot corrosion resistance of coating material has: NiCr, leicester, MCrAl, MCrAlY (M = Co, Ni, Fe) and Hastiloy and Stellite alloy, etc. This kind of coating of four typical applications such as power plant boiler tubes (water wall tube, reheater and economizer, superheater tube) and water wall of high temperature oxidation corrosion has been electric power, papermaking, chemical industry and other industrial boiler users need to solve the problem, after years of research and practice has proved that the electric arc spraying Ni - Cr, Fe - Cr - Al and Ni - Cr - Al, 45 ct coating can achieve a good protective effect, the service life of up to nine years. MCrAlY coating used in aviation turbine engine blade coating as well as turbine engine combustion chamber, such as flame tube with a thermal barrier coating bonding layer.
Equipment is recommended
Solution: high speed arc sprayed/subsonic spraying
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| arc spraying equipment | arc spraying equipment | Subsonic spraying equipment |
1. Spraying line wire stainless steel, zinc, aluminum, copper, lead, molybdenum, babbitt and so on all sorts of function coating.
2. The subsonic flame spraying powder + spray wire one machine amphibious spray system equipment can spray materials include: chrome nickel chrome carbide, tungsten carbide composite powder, aluminum oxide, titanium oxide ceramic powder preparation of ideal spray coating/wire: including T8, MO (MO) low carbon steel, stainless steel, copper, AL203, AL (aluminum), zinc (Zn)
