Production method of special steel with limit specification, high strength and high corrosion resistance

• Main Authors: JIANG YUNAN, HAN YU, GONG ZHEN, WANG QUANZHOU, LIU ZHIPU, CUI HONGTAO, WU GANG, ZUO YUANHONG
• Format: Patent
• Language: Chinese; English
• Published: 22.09.2023
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a production method of limit-specification high-strength high-corrosion-resistance special steel, in component design, niobium and titanium are adopted to ensure the strength, chromium and copper are added to ensure the corrosion resistance, and rare earth wires are fed into a crystallizer to improve the corrosion resistance; no nickel is added, so that the steel is pure and the cost is saved; the measures of high heating temperature, coiling temperature and the like are adopted to ensure that the plate shape is excellent, the strength is high, the corrosion resistance is excellent and the formability is good; the performance indexes all meet the requirements; the stability of rough rolling and finish rolling is good, and the rejection rate is low. The limit specification high-strength and high-corrosion-resistance special steel produced through the method is good in atmospheric environment exposure test and salt spray corrosion test of the atmospheric corrosion-resistant steel; the fi