High-cleanliness automobile stabilizer bar steel, and preparation method and application thereof

By controlling the narrow composition window and using precision steelmaking processes, high-purity steel for automotive stabilizer bars was prepared, solving the problem of insufficient steel performance in existing technologies. This achieved high plasticity and high fatigue performance of stabilizer bars, meeting the requirements for automotive lightweighting and reducing costs.

CN122406100APending Publication Date: 2026-07-17HUNAN VALIN LIANYUAN IRON & STEEL CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN VALIN LIANYUAN IRON & STEEL CO LTD
Filing Date
2026-04-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing common steel grades are not clean enough to simultaneously meet the stringent requirements of automotive stabilizer bar steel in terms of cold forming, high elongation, high strength, and high fatigue performance, making it difficult to achieve automotive lightweighting and reduce production costs.

Method used

By controlling the chemical composition design within a narrow composition window, combined with precise converter-argon station-LF+RH refining-continuous casting and optimized hot rolling processes, high-purity steel for automotive stabilizer bars is prepared. This includes the rational addition of elements such as C, Si, Mn, Ti, Cr, and B. Through optimization of refining and hot rolling processes, the high plasticity and high fatigue performance of the steel plate are ensured.

Benefits of technology

It achieves high cold formability and high fatigue performance of high-purity steel plates, meets the complex processing requirements of automotive stabilizer bars, achieves a weight reduction of 30%-45%, and reduces production costs.

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Abstract

本发明提供了一种高洁净度汽车稳定杆用钢及制备方法和应用。一种高洁净度汽车稳定杆用钢，按重量百分比计，化学成分包括：C：0.34~0.36%、Si：0.20~0.30%、Mn：1.20~1.50%、P≤0.02%、S≤0.005%、Al：0.02~0.06%、Ti：0.02~0.05%、Cr：0.10~0.16%、B：0.002~0.004%、N≤0.005%。通过炼钢加入合适合的金元素、含量，控制炼钢、轧制工艺来制造低生产成本、高洁净度、良好塑性的汽车稳定杆用钢。
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