The application of anti impact abrasion resistant coatings and anti heat anti wear chemical resistant repair silicon carbide coating:
Slurry circulating pump,the equipment of pumping over the limestone slurry.At present domestic wet desulfurization (FGD) system slurry circulating pump is mainly produced by Xiangyang 525,Shijiazhuang strong, Germany KSB, Switzerland sulzer,Australia Warman etc,the cost is very high.Slurry circulating pump mainly consists of the sheath,guard plate and impeller.The impeller is high speed rotation in the cavity body of forming by sheath and guard plate during working, make the inhalational slurry pump up into the absorption tower sprinkler device.Due to the limestone slurry is rich in solid particles,itself is also corrosivity liquid,it will bring very serious erosive wear and corrosion for the slurry circulating pump,in addition the slurry circulating pump will produce cavitation during operation,so it is necessary for protecting the slurry circulating pump.Sheath and guard plate choose combination protective coating materials:The BD426 anti corrosive coatings,BD709 shock resistant wear resistant coating.The BD426 corrosion resistant coatings and high chromium alloy has excellent adhesive strength,the BD709 impact resistant coating is the abrasion resistant coatings preparation from NDI - PTMEG modified epoxy,it is wear resistant,impact resistant,suitable for the working condition of erosive wear and cavitation.The impeller repairing chooses BD426 corrosion resistant coatings and BD772 machinable silicon carbide coatings,because the impeller should do dynamic balance after repairing,the repairing material must be machinable.
Slurry shower pipe,its distribution pipe network has two kinds of steel lining rubber pipe and glass fiber reinforced plastic pipes.It will appear the bulge,peeling and falling off etc.phenomenon for the steel lining rubber pipe during using,if it appears for a large area,we should peel off the rubber layer,make the combined protective coatings on the steel pipeline,choose the materials of BD407,BD408 and BD7053.If it is only the partial bulge or peeling, you can clean up the adhesive residue of this part,smear the BD436 rubber lining repair agent to do the repairing.BD436 rubber lining repairing agent both has wear resistant and corrosion resistant performance,at the same time,it has higher bonding strength to metal and rubber,according to the experience data, every 2.5mm thickness BD436 coatings can provide one year's protection for the spray system during repairing.The corrosion resistance of the glass fiber reinforced plastic pipeline is undoubted,when the wear resistant coating on its surface is failure, can smear the BD7053 desulfurization special wear resistant coatings for abrasion resistant protection again.
