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VSI sand making such a long time is not used, it is easy to rust, looks very ugly, Here I introduce some methods to remove the dirt. Dilute hydrochloric acid. Careful not to rust something in it for too long, otherwise, in addition to the substance inside will be finished surface rust after the way reacted, for example, in addition to finished rust will react with iron can also use sandblasting and shot blasting details See the following instructions:
1, small pneumatic or electric rust
Electric or compressed air-powered, the appropriate assembly rust device, reciprocating or rotary movement to adapt to a variety of occasions rust. Angle grinder wire brush, the pneumatic needle beam Scaler, pneumatic knock rust hammer, tooth rotation Scaler, is a semi-mechanized equipment, tools and lightweight, maneuverability, can be more thoroughly to rust , old coatings, Sand coating to fight hair treatment, greatly improve the efficiency than manual rust, up to 1 ~ 2m2 / h, but can not remove the oxide scale, surface roughness, can not achieve a high-quality surface processing quality, ergonomics than the jet. Can be used at any site, and has been widely used particularly in the repairing process.
2, shot blasting (sand) blasting
To reach the surface is clean and suitable roughness, equipment, including an open-peening is the erosion of the role of particle injection (sand) blasting machine closed peening (sand room), vacuum shot blasting (sand) machine. Open-type shot blasting machine (sand) applied more widely, more thorough way to remove all the impurities of the metal surface, such as oxide, rust and old paint, rust efficiency 4 to 5m2 / h, a high degree of mechanical quality rust better. The Sand But on the abrasive generally can not be recycled, the impact on other jobs, clean up the scene of trouble. Heavy environmental pollution, recently been gradually restrict the use of.
3, high-pressure water abrasive rust
The impact of the use of high pressure water jet (plus, the abrasive grinding action) and water pry destroyed by rust and the adhesion of the coating on the steel plate. Sand making machine which is characterized by dust pollution, no damage to the steel plate, greatly improving rust efficiency, up to 15m2 / h or more, good quality rust. Rust steel plate easily return to rust, rust coating specifically with wet paint, have a greater impact on the general performance paint coating.
4, shot blasting
Shot blasting abrasive thrown to the steel surface to achieve the purpose of rust, use of high-speed rotation of the impeller is a hull steel material the derusting more advanced mechanical processing method, not only the high production efficiency, and low cost automation high degree of pipelined operation, less environmental pollution, but only in the indoor operation.
5, chemical rust
Is the use of an acid with a metal oxide chemical reaction, thereby removing the corrosion products of the metal surface a descaling method, commonly known as a pickling rust, can only operate in the workshop.
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VSI, sand, making,
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