Study of the Possibility of Production of Continuously Cast Billets from Shipbuilding Steels

Key Engineering Materials Pub Date : 2024-04-05 DOI:10.4028/p-8ys0gg

Arif Mammadov, Nizami Ismayilov, Elxan Mammadov, Muxtar Huseynov

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Abstract

The importance of creating specialized production sites to meet the needs of shipbuilding and ship repair enterprises of Azerbaijan in metal billets is substantiated. Technical, technological and organizational measures for the specialization of the existing production sites of Baku Steel Company LLC for the production of shipbuilding steels are recommended. The ways of mastering the production of continuously cast billets and sheet-rolling technologies from shipbuilding steels are shown.For this purpose, the need to install a continuous casting machine (CCM) in Baku Steel Company LLC is substantiated and the advantages of manufacturing steel billets on this machine are shown. It is determined that in order to reduce the overall dimensions of the caster, its radius of curvature should be 10.2 m. It is shown that the rational value of the radius of curvature reduces the probability of defects on the blanks during crystallization and makes it possible to obtain blanks of various profiles.It is shown that the combined use of EMF and hydrocarbons can reduce the defects of blanks by 2-3 times, increase the zones of equiaxial crystals by 50-80%, significantly reduce axial porosity and liquation, increase the casting speed of liquid steel by 20-30% and reduce the metal consumption of equipment by 2 times. The introduction of technologies for electromagnetic mixing and vacuuming of liquid steel makes it possible to expand the production of alloy steels for the needs of shipbuilding and ship repair enterprises.

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利用造船钢生产连铸坯的可能性研究

为满足阿塞拜疆造船和修船企业对金属坯料的需求而建立专业化生产基地的重要性得到了证实。建议采取技术、工艺和组织措施，对巴库钢铁有限责任公司现有的造船钢生产基地进行专业化改造。为此，证明了在巴库钢铁有限责任公司安装连铸机（CCM）的必要性，并说明了在该设备上生产钢坯的优势。为了减小连铸机的总尺寸，确定其曲率半径为 10.2 米。事实证明，合理的曲率半径值可降低结晶过程中坯料出现缺陷的概率，并使获得各种形状的坯料成为可能。研究表明，电磁搅拌和碳氢化合物的联合使用可使毛坯缺陷减少 2-3 倍，等轴晶粒区增加 50-80%，轴向气孔和液化显著减少，钢液浇铸速度提高 20-30%，设备金属消耗减少 2 倍。钢液电磁搅拌和抽真空技术的引入，使扩大合金钢生产以满足造船和修船企业的需求成为可能。

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来源期刊

Key Engineering Materials

CiteScore

1.00

自引率

0.00%

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