| abstract |
The invention discloses a production process of hot-rolled round steel 09CrCuSb resistant to sulfuric acid dew point corrosion. , Cr=0.90‑1.00%, Cu=0.30‑0.40%, Sb=0.07‑0.09%, P≤0.015%, S≤0.008%, Ni≤0.15%, N≤0.0060%, H≤0.0002%, O≤0.0020 %, and the rest is the balance of Fe. Through scientific chemical composition design, a passivation film is formed on the surface of the steel, and the corrosion resistance meets the requirements for use; appropriate and effective heating, rolling and cooling processes are formulated to effectively avoid cracks in copper-containing steel and achieve the delivery of corrosion-resistant steel 09CrCuSb black skin The industry breakthrough of hot-rolled material instead of bright material, increasing the finished product rate by more than 5%. |