Corrosion-resistant special steel for building construction and processing technology of corrosion-resistant special steel

Abstract

The invention provides corrosion-resistant special steel for building construction and a machining process thereof, and relates to the technical field of building steel machining. The corrosion-resistant special steel comprises molten steel, wherein the molten steel is prepared from the following chemical components in percentage by mass: 0.4 to 0.6 weight percent of C, 12 to 13 weight percent of Ni, 2.8 to 3.5 weight percent of Cr, 0.3 to 0.45 weight percent of Cu, 0.5 to 0.8 weight percent of V, 1 to 1.2 weight percent of Si, 1 to 1.5 weight percent of Be, 0.7 to 0.9 weight percent of Mn and the balance of Fe. The corrosion-resistant steel containing Ni, Cr, V, Be, Mn, Cu and other elements has oxidation resistance, the hydrogen corrosion resistance, seawater corrosion resistance and atmospheric corrosion resistance of the corrosion-resistant steel are improved, ferrotitanium is added into the molten steel, gas and non-metallic inclusions in the molten steel are purified after argon blowing, the Ti element and the Si element play a deoxidation role in the bottom argon blowing process, and therefore the corrosion resistance of the steel is improved. The alloy cast steel is nitrided, the post-treatment work is perfect, the steel has the antibacterial corrosion resistance, and the service life of the steel is prolonged.

Description

technical field [0001] The invention relates to the technical field of building steel processing, in particular to a corrosion-resistant special steel for building construction and a processing technology thereof. Background technique [0002] In recent years, with the rapid development of social economy and the acceleration of urbanization, the market competition in the construction industry has also become increasingly fierce. Construction enterprises should keep pace with the times and actively adapt to changes in the market. Steel is an important material for construction units, and special steel is A steel material composed of an alloy form, which generally has good oxidation resistance, corrosion resistance, and high temperature resistance. [0003] A large number of steel structures need to be used in the process of building construction. Corrosion-resistant special steel is the raw material for steel structures in harsh environments. The existing building steel has a...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a corrosion-resistant special steel for building construction and its processing technology, which solves the problem of insufficient corrosion resistance of building steel