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Production method of low-torsion bainite frog steel
The invention discloses a production method of low-torsion bainite steel for frogs. The production method comprises the following steps that S1, a steel billet obtained after smelting and casting is heated; s2, the heated steel billet is rolled or forged to obtain the frog; s3, the rail head and the rail bottom of the frog are subjected to accelerated cooling, the cooling rate of the rail head is 10-15 DEG C/s, and the cooling rate of the rail bottom is 5-10 DEG C/s; s4, the frog subjected to accelerated cooling is slowly cooled, wherein the cooling rate is 0.5-1 DEG C/min; and S5, tempering the slowly cooled frog. According to the method, the mechanical property and the straightness of the bainite frog can be improved.
本发明公开了一种低扭转贝氏体辙叉用钢的生产方法，包括以下步骤：S1，对冶炼、浇铸后获得的钢坯进行加热；S2，对加热后的钢坯进行轧制或锻造以获得辙叉；S3，对辙叉的轨头和轨底分别进行加速冷却，其中，轨头冷却速率为10～15℃/s，轨底冷却速率为5～10℃/s；S4，对加速冷却后的辙叉进行缓慢冷却，其中冷却速率为0.5～1℃/min；S5，对缓慢冷却后的辙叉进行回火。本发明能够提高贝氏体辙叉的力学性能和平直度。
Production method of low-torsion bainite frog steel
The invention discloses a production method of low-torsion bainite steel for frogs. The production method comprises the following steps that S1, a steel billet obtained after smelting and casting is heated; s2, the heated steel billet is rolled or forged to obtain the frog; s3, the rail head and the rail bottom of the frog are subjected to accelerated cooling, the cooling rate of the rail head is 10-15 DEG C/s, and the cooling rate of the rail bottom is 5-10 DEG C/s; s4, the frog subjected to accelerated cooling is slowly cooled, wherein the cooling rate is 0.5-1 DEG C/min; and S5, tempering the slowly cooled frog. According to the method, the mechanical property and the straightness of the bainite frog can be improved.
本发明公开了一种低扭转贝氏体辙叉用钢的生产方法，包括以下步骤：S1，对冶炼、浇铸后获得的钢坯进行加热；S2，对加热后的钢坯进行轧制或锻造以获得辙叉；S3，对辙叉的轨头和轨底分别进行加速冷却，其中，轨头冷却速率为10～15℃/s，轨底冷却速率为5～10℃/s；S4，对加速冷却后的辙叉进行缓慢冷却，其中冷却速率为0.5～1℃/min；S5，对缓慢冷却后的辙叉进行回火。本发明能够提高贝氏体辙叉的力学性能和平直度。
Production method of low-torsion bainite frog steel
低扭转贝氏体辙叉用钢的生产方法
YUAN JUN (author) / WANG DAIWEN (author) / DENG YONG (author) / ZHU NINGFANG (author)
2023-04-07
Patent
Electronic Resource
Chinese
IPC:
C21D
Veränderung der physikalischen Struktur von Eisenmetallen
,
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
/
B21H
MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
,
Herstellen besonderer Gegenstände aus Metall durch Walzen, z.B. Schrauben, Räder, Ringe, Büchsen, Kugeln
/
B21J
FORGING
,
Schmieden
/
B21K
MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
,
Herstellen von Schmiede- oder Presserzeugnissen aus Metall, z.B. Hufeisen, Nieten, Bolzen oder Rädern
/
C22C
Legierungen
,
ALLOYS
/
E01B
PERMANENT WAY
,
Gleisoberbau
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