used in power plant slurry circulating pump impeller rubber ceramic lining repairing and protecting.
As the long time scour,corrosion,abrasion etc.problems,the slurry circulating pump impeller,pump case,guard plate of Hubei Huadian
power plant need periodic replacement.The impeller and pump body are serious wear,generally we change it for about 7 to 9 months,
some of them has shorter replacement period.Not only it will take long time and high costs but also need to tear down the equipment
for the traditional maintenance methods,it will affect the normal operation of the power plant.
Xiangyang Baidun Protective Coating Material Co.,Ltd gets a set of complete repair technology from years of R&D and construction.
Make the two kinds of macromolecule polymeric ceramic material(BD707 small particle abrasion wear resistant epoxy high alumina
ceramic coatings and BD426 high temperature anti chemical corrosion resistant epoxy coating) use cooperatively,it can effectively repair
desulfurization system equipment of suffering from cavitation,corrosion and abrasion.This material has excellent wear & corrosion
resistance,the comprehensive results are higher than high chrome alloy, rubber lining and ceramic lining plate etc.scheme.
Maintenance technology:
1.Weld up a skeleton for the larger defect area parts with steel wire mesh first.Clean up the welding slag,blot and other impurity with
angle grinder,clean it by cleaning agent and dry it by airing.
2.Make BD426 corrosion resistant coatings mix uniformly according to the mass ratio A:B=5:1,and smear on the pending-repair part,
smear for two times according to criss cross method,the suitable adhesive layer thickness is about 0.3-0.5mm.Don't smear the second
layer until the first layer adhesive initial curing(the adhesive layers don't stick hands).
3.After the second layer of BD426 anticorrosion coating initial curing,make BD707 small particle abrasion wear resistant epoxy coatings
mix uniformly according to the mass ratio A:B=4:1(be sure to do it before BD426 adhesive layer hardening),and be coating on the BD426
anti corrosion high temperature resistant repair coatings,the adhesive layer should be compacted.
4.After the BD707 small particle abrasion resistant coating initial curing,can brush a layer of BD426 corrosion resistant coatings on the BD707.
5.Complete curing for 24 hours at room temperature,then it can be put into using.
1.After the adhesive layer complete curing,heat the adhesive layer up to 60-80 degree and keep this temperature for 2 hours,
can improve 30% combination property of the repair coating.
2.When the temperature is below 15‘ζ,the curing of adhesive layer is slow,the strength is not easy to rise up completely,can heat it up to the
temperature of 60-80 degree and keep this temperature for 2 hours by iodine-tungsten lamp or hair dryer etc. measures after the surface of
BD426 anti corrosion resistant epoxy repair coating initial curing.
Range of application for BD707 small particle wear abrasion resistant high alumina ceramic coating:
Two component,widely used in the repairing of various wear-out part and the preparation of wear resistant protective coating on the surface
of various machine part which has wear & corrosion resistant requirements.such as:the repairing and pre-protecting of pipe,elbow,
slurry pump,pumping sand pump,centrifuge, packing boxes, power plant desulfurization system slurry circulating pump body,
impeller,concentric reducer etc.
Product common packaging and actual picture of our BD707:
Product application photos of our BD707:
