A method for improving the surface quality of hot-rolled commercial vehicle wheel steel

By optimizing the chemical composition of the billet and the hot rolling process, the problem of peeling defects in commercial vehicle wheel steel was solved, achieving uniform rolling and high-quality production of the material, and improving the surface quality and mechanical properties of the wheel steel.

CN120001798BActive Publication Date: 2026-05-29SHOUGANG JINGTANG IRON & STEEL CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHOUGANG JINGTANG IRON & STEEL CO LTD
Filing Date
2025-02-20
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies are insufficient to effectively address the peeling defect in commercial vehicle wheel steel, and traditional methods disrupt production schedules and increase heat loss.

Method used

By optimizing the chemical composition of the billet and controlling heating parameters and rolling processes, including charging temperature, heating rate, rolling mode and reduction rate, stable titanium compounds are formed, which inhibit abnormal grain growth, reduce the precipitation of low-melting-point compounds, avoid grain boundary brittleness, uniform rolling force, and reduce peeling defects.

Benefits of technology

It significantly reduced the occurrence rate of peeling defects, improved the production quality and mechanical properties of commercial vehicle wheel steel, and ensured the uniformity of the material's microstructure and overall stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to a method for improving the surface quality of hot-rolled commercial vehicle wheel steel and belongs to the technical field of steel rolling and vehicle wheel steel manufacturing. The method comprises the following steps: obtaining a casting blank with a set chemical composition, wherein the set chemical composition comprises Ti and B; heating the casting blank and controlling the following parameters of the heating: charging temperature, tapping temperature, temperature rising rate of a preheating section and temperature rising rate of a heating section, so as to reduce the surface layer heating stress of the casting blank; sequentially performing rough rolling, finish rolling, laminar cooling and coiling on the heated casting blank, and controlling the rolling mode and rolling reduction rate of each pass of the rough rolling, so as to obtain commercial vehicle wheel steel. Through optimization of component design, heating process and rolling process, the surface quality of the commercial vehicle wheel steel is significantly improved, and the buckling defect is effectively solved.
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