一种锶、镧复合孕育剂、制备方法及应用

By controlling the ratio of SiO2 to C to generate CO, consuming excess C and removing oxygen, and combining elements such as Ba, Ca, Ce, and Al, the problem of unstable cast iron performance caused by the reactivity of strontium-lanthanum inoculants was solved, and the stability of strontium-lanthanum composite inoculants and the quality of cast iron products were improved.

CN121082836BActive Publication Date: 2026-07-17YUZHOU HENGLILAI ALLOY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YUZHOU HENGLILAI ALLOY CO LTD
Filing Date
2025-09-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing strontium-lanthanum inoculants are prone to reacting with oxygen due to the active chemical properties of strontium and lanthanum. This leads to the introduction of oxygen into the molten iron, affecting the effectiveness of the inoculant and causing unstable performance of cast iron products.

Method used

The preparation method of strontium-lanthanum composite inoculant involves controlling the ratio of SiO2 to C to generate CO, consuming excess C and removing oxygen, and combining elements such as Ba, Ca, Ce, and Al to promote graphitization and matrix refinement, avoid introducing additional impurities, and ensure the stability of inoculant performance.

Benefits of technology

The performance of the strontium-lanthanum composite inoculant has been stabilized, improving the mechanical properties and anti-fading ability of cast iron and ensuring the stability and consistency of cast iron product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明涉及孕育剂技术领域，具体涉及一种锶、镧复合孕育剂、制备方法及应用。本发明孕育剂制备原料包括以重量百分比计的硅Si 30~50%、二氧化硅SiO2 3~10%、钡Ba 1~2%、钙Ca 0.5~1%、铈Ce 0.1~1%、铝Al 0.1~1%、碳C 1~5%、锶Sr 10~15%、镧La 10~15%、余量为铁Fe。在本发明孕育剂制备的过程中，通过添加碳，能够对各原料中的杂质进行还原去除并对原料进行净化，并采用添加二氧化硅的方式，消耗掉绝大部分的碳，避免影响浇注产品质量。本发明孕育剂能够有效的减少铸铁的白口倾向，并有效改善铸铁的力学性能，细化合金组织，同时具有较好的抗衰退能力，具有良好的应用前景以及推广价值。
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