寿县合兴浅谈钢结构喷铝喷锌防腐的原理发布时间：2015-9-2 9:39:54 浏览次数:633
Especially in steel structure spray aluminum zinc anticorrosion technology, arc spraying applied in the most common, its application prospect is also more widely. Arc spraying anti-corrosion principle is the use of electric arc spraying equipment, the two electrically charged metal wire (such as zinc, aluminium, etc.) for heating, melting, atomization and spray forming anticorrosive coating, and long-term anti-corrosion composite coating of organic coating, closed the significant characteristic of the coating is:
Have a long use life its anti-corrosion life can reach more than 50 years and the anticorrosion coating used in 30 years period without any other anti-corrosion maintenance; After 30 years of maintenance, only on the arc spray coating to brush an enclosed coating; Need repainting, realize a preservative, effective coating over a long period of time.
Arc spraying coating and metal substrate with excellent adhesion (can reach more than 10 mp), metal coating layer with mechanical setting and micro metallurgy combined with matrix metal, under slight bending, impact or collision can also ensure that the anti-corrosion coating fall off, peeling, combined with strong, anti-corrosion is effective for a long time, it is out of reach for any other surface anticorrosion coating.
Principle of steel structure of aluminum zinc spraying anti-corrosion coating for cathodic protection, in corrosive environment, even if the anti-corrosion coating and local breakage, still have sacrificed themselves to protect the effect of the steel substrate. Coating (anode) and the area ratio of the steel substrate (cathode) is 1 or more; And zinc rich coating of anode and cathode than all the 1, its protection effect and the binding force is much lower than that of arc spraying anti-corrosion coating.