Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Production method of steel for deep hardening frog
The invention discloses a production method of steel for a deep hardening frog. The steel for the frog comprises, by mass, 0.20%-0.35% of C, 0.80%-1.70% of Cr and 0.002%-0.006% of B. The method comprises the following steps that S1, a steel billet obtained after smelting and casting is heated and subjected to heat preservation; s2, the heated steel billet is rolled or forged, the final cooling temperature of rolling or forging ranges from 700 DEG C to 950 DEG C, and the compression ratio is larger than or equal to 4; s3, the steel for the frog obtained after rolling or forging is subjected to heat treatment, specifically, cooling is conducted through waste heat, the initial cooling temperature ranges from 740 DEG C to 820 DEG C, the cooling rate ranges from 5 DEG C/s to 15 DEG C/s, and the final cooling temperature ranges from 100 DEG C to 400 DEG C; and S4, the cooled steel for the frog is tempered. According to the method, the steel for the deep hardening frog can be obtained by controlling the components of the bainite frog and reducing the final cooling temperature of rolling or forging.
本发明公开了一种深硬化辙叉用钢的生产方法，所述辙叉用钢按质量百分比计包含0.20～0.35％的C、0.80～1.70％的Cr、0.002～0.006％的B，所述方法包括以下步骤：S1，对冶炼、浇铸后获得的钢坯进行加热并保温；S2，对加热后的钢坯进行轧制或锻造，轧制或锻造的终冷温度为700～950℃，压缩比≥4；S3，对轧制或锻造后获得的辙叉用钢进行热处理，所述热处理包含：利用余热进行冷却，开冷温度为740～820℃，冷却速率为5～15℃/s，终冷温度为100～400℃；S4，对冷却后的辙叉用钢进行回火。本发明的方法能够通过控制贝氏体辙叉的成分并降低轧制或锻造的终冷温度，获取深硬化辙叉用钢。
Production method of steel for deep hardening frog
The invention discloses a production method of steel for a deep hardening frog. The steel for the frog comprises, by mass, 0.20%-0.35% of C, 0.80%-1.70% of Cr and 0.002%-0.006% of B. The method comprises the following steps that S1, a steel billet obtained after smelting and casting is heated and subjected to heat preservation; s2, the heated steel billet is rolled or forged, the final cooling temperature of rolling or forging ranges from 700 DEG C to 950 DEG C, and the compression ratio is larger than or equal to 4; s3, the steel for the frog obtained after rolling or forging is subjected to heat treatment, specifically, cooling is conducted through waste heat, the initial cooling temperature ranges from 740 DEG C to 820 DEG C, the cooling rate ranges from 5 DEG C/s to 15 DEG C/s, and the final cooling temperature ranges from 100 DEG C to 400 DEG C; and S4, the cooled steel for the frog is tempered. According to the method, the steel for the deep hardening frog can be obtained by controlling the components of the bainite frog and reducing the final cooling temperature of rolling or forging.
本发明公开了一种深硬化辙叉用钢的生产方法，所述辙叉用钢按质量百分比计包含0.20～0.35％的C、0.80～1.70％的Cr、0.002～0.006％的B，所述方法包括以下步骤：S1，对冶炼、浇铸后获得的钢坯进行加热并保温；S2，对加热后的钢坯进行轧制或锻造，轧制或锻造的终冷温度为700～950℃，压缩比≥4；S3，对轧制或锻造后获得的辙叉用钢进行热处理，所述热处理包含：利用余热进行冷却，开冷温度为740～820℃，冷却速率为5～15℃/s，终冷温度为100～400℃；S4，对冷却后的辙叉用钢进行回火。本发明的方法能够通过控制贝氏体辙叉的成分并降低轧制或锻造的终冷温度，获取深硬化辙叉用钢。
Production method of steel for deep hardening frog
深硬化辙叉用钢的生产方法
YUAN JUN (Autor:in) / HAN ZHENYU (Autor:in) / ZHU NINGFANG (Autor:in) / CHEN CHONGMU (Autor:in)
28.03.2023
Patent
Elektronische Ressource
Chinesisch
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