Zinc-based heavy-duty protecting technology for steel component

Abstract

The invention relates to the coatings protection technique of steel components, in particular to the heavy-duty anti-corrosion protection technique for the zinc base of steel components, which pertains to the technical field of metal coatings protection. The technique flow is that: burnishing of component corners, surface mechanical chipping, phosphorization, corners mechanical chipping, corners thermal spraying, spraying bottom powder, gelatinization semi-solidified, spraying face powder, solidification and cooling and packing. The invention has the advantages that the edges, corners, welding lines and the surrounding parts thereof of the steel components are sprayed with metal after cleaning; compared with spraying whole metal components surface, the workload is greatly lightened and the cost is obviously lowered; the protection technique employs phosphate coating, hot sprayed metal coating, zinc based powder coating, surface finishing or protection powder coating to form multilayer compound coating. The invention has clear operation technique and remarkable protection effect and eliminates the pronounced pollution problem caused by galvanization processing.

Description

technical field [0001] The invention relates to coating protection technology for steel components, in particular to a zinc-based heavy-duty anti-corrosion protection technology for steel components, and belongs to the technical field of metal coating protection. Background technique [0002] Due to long-term exposure to the atmosphere, steel components undergo chemical and electrochemical reactions due to climate change, sun and rain, moisture contained in the atmosphere, and corrosive media, and the surface is rapidly oxidized, resulting in material performance degradation and even failure. [0003] Coating protection is a cost-effective technical method that is often adopted. There are two types of non-metallic coatings and metallic coatings. Non-metallic coatings include paint coatings, powder coatings, and inorganic material covering coatings. The shielding method is mainly used to block the contact between the corrosive medium and the steel component base material to ...

AI Technical Summary

Problems solved by technology

[0006] Due to the unavoidable contact or even collision of steel components with other objects during storage, transportation, installation or use after painting, it is very easy to cause damage to the coating on edges, corners and welds, forming corrosion breakthrough points and affecting decoration. As a result, what is more serious is the hidden danger of corrosion. After many components are damaged, it is difficult to ensure timely repair, which leads to the deep corrosion spreading and causing damage.