A method for producing a high-strength steel and with hydrogen sulfide corrosion resistant oversize oil tank

The present invention relates to a hydrogen sulfide corrosion resistant high strength steel with large oil storage tank, using the C-Mn-based add Cu, Nb microalloying component design system. Plate at 70 ~ 150KJ / cm high heat input welding condition, which steel welded joint HAZ toughness satisfies -30 ℃ KV2≥60J. According to GB / T 8650-2006 standard solution of hydrogen sulfide in the anti-corrosion test A crack length ratio satisfies CLR≤4%, the thickness of the crack CTR≤1%, crack sensitivity rate CSR≤0.5%. KR hot metal pretreatment process of smelting → → → ladle refining process vacuum degassing of Ca → → → casting → rolling slab heating control controlled cooling → slow cooling → → → detection → Tempering test. Having a tissue stability, high strength, excellent low-temperature toughness, excellent resistance Resistance to hydrogen sulfide corrosion and heat input welding performance characteristics, and low production cost, high operability.