Ultra-high strength steel with excellent corrosion resistance and fatigue resistance and its making process
An ultra-high-strength steel, fatigue resistance technology, applied in the direction of manufacturing tools, metal rolling, metal rolling, etc., can solve the problems of insufficient strength, fracture damage, no corrosion resistance and fatigue resistance, etc., to achieve excellent durability Corrosion performance and fatigue resistance, inhibition of austenite grain growth, and excellent comprehensive mechanical properties
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[0025] The ultra-high-strength steel with excellent corrosion resistance and fatigue resistance of the present invention and its manufacturing method are further described in detail below in conjunction with specific examples:
[0026] The chemical compositions of several specific examples of the ultra-high-strength steel with excellent corrosion resistance and fatigue resistance of the present invention are listed in Table 1. The manufacturing methods of these ultra-high-strength steels are as follows: the top-bottom compound blowing is carried out on the 80-ton converter in the steelmaking plant, and the deep desulfurization technology of molten iron is adopted to make the S in the molten iron ≤ 0.005%. After the molten steel is blown with argon, After vacuum treatment, the chemical composition in the steel meets the requirements in Table 1, and the balance is Fe and unavoidable inclusions. Then pour the molten steel meeting the requirements in Table 1 into a slab with a sec...
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