What are the four steps in the production and processing of hot rolled steel plate?

Hot rolled steel plate processing is mainly to achieve the purpose of anti-corrosion, anti-oxidation, so as to extend its service life. The processing technology of hot rolled steel plate includes four aspects:

1. Pickling passivation: pickling passivation can produce a thin, dense and hard passivation film on the inner and outer wall of hot rolled steel plate, and the existence of passivation film is the fundamental reason for preventing corrosion of steel pipe.

2. Bright solid fusion: after forming and welding, the steel pipe must undergo solid fusion treatment at 1050℃ to eliminate the internal stress caused by deformation, reduce stress corrosion, and recover the intergranular change during pipe welding.

3. Gas shielded welding: under gas protection, the chromium and nickel on the alloy surface will not be oxidized during welding, which retains the original characteristics and corrosion resistance of hot rolled steel plate.

4. Sealing material: sealing material is the key point of the service life of hot rolled steel plate, and the service life of sealing material determines its service life. Using chlorinated butyl sealing ring, the physical properties of the material are much higher than that of the compound.