How does mechanical grab crane prevent rust?

How does mechanical grab prevent rust?

Mechanical grab is a large mechanical operation equipment, generally open air work, so must withstand the impact of rain and snow and the sun exposure.

So with the deterioration of atmospheric environment, the acid content in rainwater increases, so it is a great test for the scrap steel grab that has been working in the open air.

Now let's talk about how the mechanical grab prevents rust.

(1) for the damaged part of paint film on the metal structure, the surface of the component shall be cleaned, and anti-rust paint and decorative paint film shall be applied to protect the metal surface from corrosion after rain and snow.

(2) in the active part of the crane, such as the lifting rope and crane connecting pin shaft, each guide wheel, trolley wheel, etc., to do a good job in rust prevention work.

Can after downtime, these areas with a brush to brush clean, first remove the can lead to corrosion of impurities, such as moisture, rusty spot again for these parts - 10 or 20 - diesel, because - 10 or 20 - diesel than the oil permeability is strong, has a load of splicing part penetrates into, make its metal surface oil film, and because of its low freezing point, so can a low resistance to low temperature.

(3) after cleaning and lubricating with diesel oil, apply a layer of grease.

Calcium base or lithium base grease is a good choice, because the two kinds of grease, mechanical stability, adhesion and water resistance, the freezing point can also reach -20 degrees, when applying grease, coating is not too thick.