Corrosion-resistant metal material

Abstract

The invention relates to the field of metal alloy materials, in particular to a corrosion-resistant metal material. The metal material comprises, by weight, 2-5% of Al, 5-8% of C, 4-6% of Si, 1.0-1.5%of Mn, 3-6% of Mg, 2-5% of Cr, 0.15-0.25% of B, 0.01-0.03% of Zr, 0.03-0.05% of Nb and the balance Fe. During production, metals other than Fe, Zr and Nb are preheated and poured into a converter, after molten iron is added for smelting, Zr and Nb are added for refining, and after refining is completed, still standing, inoculation and casting forming are conducted. Iron is the main component of the material, as for other components, carbon is used for improving the strength and toughness of the material, silicon is used for deoxidation, manganese is used for improving the toughness of the material, zirconium and niobium are used for improving the corrosion resistance and strength of the material, through combination of various metal elements, the electrical conductivity, thermal conductivity and strength of the material are improved, the quenching property of the material is reduced, and the material is excellent in oxidation resistance, corrosion resistance, mechanical property and mechanical performance.

Description

technical field [0001] The invention belongs to the field of metal alloy materials, and in particular relates to a corrosion-resistant metal material. Background technique [0002] Different metal materials have different elements and chemical elements, which make their mechanical characteristics and physical properties quite different. In addition, different metal materials have different processing types. Therefore, different types and methods should be selected in the processing of metal materials to ensure the effective use of metal materials and play their due role. [0003] The casting process works by heating and melting metal and pouring it into a sand mold or mold to form a liquid form. Then, start the manufacturing process according to the process requirements. The application also needs to meet the requirements of metal conditions, and its process requirements are relatively strict. The progress of technology makes the processing requirements of metal materials...

AI Technical Summary

Problems solved by technology

At present, the common corrosion-resistant steels on the market are 201, 304 and 321 stainless steel. Among them, 201 stainless steel can only be better in ordinary air, and it is not resistant to corrosion in a slightly acidic environment. Acidic environment is easy to corrode, especially with Cl - When it exists, the corrosion speed is accelerated, which restricts its application range in the pharmaceutical and chemical industry; 321 stainless steel and 304 stainless steel are both austenitic stainless steel, and their physical properties are very similar, but their chemical composition has changed

All of them have relatively harsh processing conditions and limited corrosion resistance under high temperature conditions. Therefore, it is necessary to develop a corrosion-resistant metal material that can be widely used, so that it can be used in the chemical and pharmaceutical industries, in high-temperature ring acid-base environments, Operation in seawater environment is not affected

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