What causes the well cover to rust? How to prevent
Well cover rust phenomenon, how should we solve it, the following ball ink cast iron well cover will introduce you to the cause of rust knowledge, please firmly grasp.
Well cover.
1, the use of chlorine ions in the environment: chlorine ions are widely present, such as salt, sweat, seawater and so on. In the presence of chlorine ions in the environment, corrosion is rapid, even more than ordinary low-carbon steel. Therefore, the use of the well cover environment is required, and need to be frequently wiped, remove dust, keep clean and dry.
2, no solid solution treatment: alloy elements are not dissolved into the subst body, resulting in low alloy content of the subst body tissue, corrosion resistance is poor. Therefore, we should pay attention to the protection measures in this regard.
3. The well cover is naturally corroded between crystals: this material, which does not contain titanium and vanadium, has a tendency to corrode between crystals. The addition of titanium and vanadium, with stable treatment, can reduce intercrystalline corrosion. A high alloy steel that resists corrosion in air or in chemically corrosive media.
The solution to the rusty cover of the ball-ink cast iron well.
First, spray rust removal: when removing rust must be all the rust clean, cast iron cover surface of the oxides all clear. At air pressure at 4-0.6Mpa. The power of air separated by oil and water is very great. Friction between air and the well cover. Instant cleaning, the advantages of this cleaning is no fixed location, high efficiency, injection point flexibility, no dead end. Convenient after the attachment of paint. Prevents rust again.
Second, ejaculation rust removal: in the high-speed rotation of centrifrifrifsing action. Abrasives can wake up and clean the well cover with a large friction area. The advantages of this method are that the efficiency is high, the quality of rust removal is good, and the workers’ high power is reduced slightly. The important thing is that the air pollution is relatively low. Therefore, the general large-scale manufacturers are using this method to remove rust. Regardless of the rust removal method used, there is a certain risk in the operation, please raise safety awareness, to ensure personal safety in the case of operation.