无碳内衬防絮流水口在轴承钢上的应用

炼钢 ›› 2025, Vol. 41 ›› Issue (4): 74-83.

无碳内衬防絮流水口在轴承钢上的应用

李春艳^1,2，刘宗辉²，黎才庆²，孟祥龙¹,赵晓飞²，张高铭²

1.辽宁科技大学材料与冶金学院，辽宁鞍山 114000；
2.河南济源钢铁（集团）有限公司第一炼钢厂，河南济源 459000

出版日期:2025-08-05 发布日期:2025-07-31

Application of carbon free lining anti-flocculation flow SEN in bearing steel casting

Online:2025-08-05 Published:2025-07-31

摘要/Abstract

摘要： 针对GCr15轴承钢生产时因钢水流动性差导致的水口堵塞问题，通过引进防絮流浸入式水口进行改善。该水口采用内腔无碳防结瘤技术，可以有效抑制夹杂物的附着，保持浇钢过程中钢流通道的清洁，减少由于浇钢通道结瘤导致的液面波动与流场结构破坏；无碳内衬材料还可以提高水口的抗热震性能，避免水口渣线在开浇过程中因热震而导致的异常现象发生。为进一步提高钢水洁净度，减少轴承钢中MgO·Al₂O₃·CaS系夹杂，使用防絮流水口进行无钙处理钢水的浇铸试验。试验结果表明，整个浇次8个流无结晶器液面大波动，水口的内层料防絮流效果稳定，水口基本无缩径(缩径0.4～2.0 mm)，稳定生产的同时提高了钢水洁净度。

关键词: 轴承钢, 钢水流动性, 水口结瘤, 防絮流水口, 钙处理

Abstract: Aiming at the problem of submerged entry nozzle (SEN) clogging caused by poor fluidity of molten steel during the production of GCr15 bearing steel, an anti-flocculation flow SEN was introduced. The anti-flocculation flow SEN adopts carbon free anti-clogging technology in the inner cavity, which can inhibit the adhesion of inclusions, keep the steel flow channel clean during the casting process, and reduce the mold level fluctuation and flow field structure damage caused by the clogging of the casting channel. Carbon free liner material can also improve the thermal shock resistance of the nozzle and avoid the abnormal phenomenon caused by thermal shock in the nozzle slag line during the casting start. In order to further improve the cleanliness of molten steel and reduce the MgO·Al₂O₃·CaS inclusions in bearing steel, the casting test of calcium-free treatment molten steel was carried out by using the anti-flocculation flow nozzle. The test results showed that there were no significant fluctuations in the mold liquid level during whole casting 8 flows, and the anti-flocculation flow effect of the inner layer material at the nozzle was stable. The nozzle diameter had almost no shrinkage (shrinkage of 0.4-2.0 mm), and the cleanliness of the molten steel was improved while maintaining stable production.

Key words: bearing steel, fluidity of liquid steel, clogging of nozzle, anti-flocculation nozzle, calcium treatment

李春艳, 刘宗辉, 黎才庆, 孟祥龙, 赵晓飞, 张高铭. 无碳内衬防絮流水口在轴承钢上的应用[J]. 炼钢, 2025, 41(4): 74-83.

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