Metallurgical bonding stainless steel cladding thermometal profile steel and preparing technology

Abstract

The invention discloses a metallurgically bonded stainless steel-coated bimetallic section steel and its preparation process, which includes a carbon steel core and a stainless steel cladding. Its composite forming process includes using an induction heater to integrally heat the outer stainless steel pipe to 600-1000°C. The inner layer of carbon steel is poured into molten metal and cast to produce a clad bimetal composite billet with a metallurgical bonding interface; the cast bimetal billet is hot-rolled into a clad bimetal steel section. The metallurgical bonding interface between the stainless steel layer and the carbon steel core is formed by melting and casting, and has the advantages of high bonding strength, excellent process performance, dense structure, good quality, few processes, low cost, and high efficiency. The present invention uses bimetallic section steel to replace the integral stainless steel section steel. On the premise of ensuring the corrosion resistance properties of the section steel, it not only saves stainless steel materials and reduces project costs, but also effectively improves the strength of steel bars, reduces waste of resources and energy and environmental pollution, and has Broad application prospects.

Description

Technical field [0001] The invention relates to the technical fields of metal composite materials and metallurgical steel rolling, and in particular to a metallurgical bonded stainless steel-coated bimetal steel bar and its preparation process. Background technique [0002] Section steel is a strip of steel with a certain cross-sectional shape and size. It is one of the four major varieties of steel (plate, tube, profile, and wire). According to the cross-section shape, section steel is divided into simple section section steel and complex section section steel (special-shaped steel). Simple section steel refers to square steel, round steel, flat steel, angle steel, hexagonal steel, etc.; complex section steel refers to I-beam, channel steel, rail, window frame steel, curved steel, etc. Section steel is generally used for machining, structural connection, etc. At present, angle steel, channel steel, I-beam, H-shaped steel, etc. are widely used in industry and construction....

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to overcome the deficiencies of the prior art, to solve the problem that stainless steel section steel has good corrosion resistance but high cost; carbon steel section steel has low cost but poor corrosion resistance, and provides a cost-effective and good corrosion resistance and A metallurgically combined stainless steel clad bimetal profile steel with oxidation performance and its preparation process can obtain good corrosion resistance and low cost, and can mass produce various bimetal clad steel products such as stainless steel clad angle steel, channel steel, H-beam, etc.

Images