Production process for shock-proof disaster-relieving hot rolled transformation-induced plasticity (TRIP) steel plates

Abstract

The invention relates to a production process for shock-proof disaster-relieving hot rolled transformation-induced plasticity (TRIP) steel plates, and belongs to the technical fields of ferrous metallurgy and rolling. The production process comprises the following procedures of: performing steelmaking and continuous casting; heating and hot rolling; and cooling and coiling; and in the steelmakingprocedure, steel is controlled to comprise the following chemical compositions in percentage by mass: 0.10 to 0.40 percent of C, 0.1 to 2.0 percent of Si, 1.0 to 2.0 percent of Mn, less than or equalto 0.013 percent of P, less than or equal to 0.013 percent of S, 0.01 to 0.1 percent of Al, 0.01 to 0.05 percent of Nb, 0.1 to 0.2 percent of Mo, and the balance of Fe and inevitable impurity elements. The production process has the advantages that: a hot rolling production method is adopted, a production flow is short and the cost is saved; a Nb+Mo microalloying treatment is adopted to inhibit the formation of a pearlite in the laminar cooling process, and grains are refined and the austenite is stabilized; and the hot rolled TRIP steel plates have high shock-proof disaster-relieving capacity.

Description

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AI Technical Summary

Benefits of technology

This patented technology controls how much iron (iron) called martensitic acid (Fe3O4), commonly known as Fe2Si2), forms during manufacturing processes on steels containing chromium(Cr). By adjusting its concentration ratio between two different metals like chrome and molydenum, this material becomes stronger when heated compared with pure metal materials without adding any extra elements like nitrogen gas. It also changes from one type into another through solid state transformations over several hours before reaching room temperature after being cast onto an ingots made up mostly of these alloys. These technical benefits include improved efficiency, cost savings, reduced environmental impact, stability against corrosiveness, better mechanical properties, durability, and ease of use in various applications related to rust prevention.

Problems solved by technology

This patented technical problem addressed by these inventors relates to improving the strength, durability, and shock resistance of conventional heat treated steeling/ductile iron structures while maintaining their excellent work capabilities such as forming complex phases during rapid solidification without losing shape memory due to changes caused by thermal stress.

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