In china, coal are the
main fuel of power plant boiler and industrial boiler. “four
tubes” of boiler work under bad environment of high temperature, high pressure, gas corrosion and grains ablation,
high temperature corrosion and abrasion generate easily, then thinning the wall
tubes, leading to damage of equipment even accidents. The surface of Induced
draft fan, air cylinder and some other equipment which high-speed gas flows
through, abrasion, cavitation and other reasons may lead to efficacy loses,
causing heavy losses. Many moving parts (for example, axle), scraped because of
mechanical abrasion. In addition, electric power transmission &
transformation equipment and all kinds of steel
structures of power plant suffer serious industrial
atmospheric corrosion because of they are always in the outdoor environment. All
the solutions can be solved by thermal spray techniques, strengthening and improve
its service life greatly, or restoring its workability by repairing, then
increasing production safety and economic benefit
of powder plant.
High-temperature
corrosion and abrasion not only have great effects on safe
operation of boiler, but also cause huge economic loss, it’s urgent to be
solved in safety problem of boiler. It has been proved that spraying high
chromium NiCr wire coating with arc spraying is an ideal method, which has been
widely used in many countries. And except wire, powder is common used in
thermal spray technique, especially WC
spray powder, there are more and more
china spray powder suppliers and manufacturers,
accelerating the development of thermal spraying technique.
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