Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Production method of high-wear-resistance steel for frog
The invention discloses a production method of high-wear-resistance steel for a frog. The steel for the frog comprises, by mass, 0.28-0.35% of C. The 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, atomized gas-water mixtures are sprayed to the rail head tread, the two side faces of the rail head and the rail bottom of the frog for cooling, the initial cooling temperature ranges from 740 DEG C to 820 DEG C, the rail head cooling rate ranges from 4 DEG C/s to 5 DEG C/s, the rail bottom cooling rate ranges from 3 DEG C/s to 5 DEG C/s, and spray cooling is stopped when the temperature of the center line of the rail head ranges from 200 DEG C to 300 DEG C after cooling; and S4, the cooled frog is subjected to tempering. The high-strength, high-toughness and high-wear-resistance steel for the frog can be produced.
本发明公开了一种高耐磨辙叉用钢的生产方法，所述辙叉用钢按质量百分比计包含0.28～0.35％的C，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；S2，对加热后的钢坯进行轧制或锻造以获得辙叉；S3，对辙叉的轨头踏面、轨头两侧面和轨底喷射雾化的气水混合物以进行冷却，其中，开冷温度为740～820℃，轨头冷却速率为4～5℃/s，轨底冷却速率为3～5℃/s，冷却至轨头中心线温度为200～300℃时，停止喷雾冷却；S4，对冷却后的辙叉进行回火。本发明能够生产获得高强、高韧、高耐磨辙叉用钢。
Production method of high-wear-resistance steel for frog
The invention discloses a production method of high-wear-resistance steel for a frog. The steel for the frog comprises, by mass, 0.28-0.35% of C. The 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, atomized gas-water mixtures are sprayed to the rail head tread, the two side faces of the rail head and the rail bottom of the frog for cooling, the initial cooling temperature ranges from 740 DEG C to 820 DEG C, the rail head cooling rate ranges from 4 DEG C/s to 5 DEG C/s, the rail bottom cooling rate ranges from 3 DEG C/s to 5 DEG C/s, and spray cooling is stopped when the temperature of the center line of the rail head ranges from 200 DEG C to 300 DEG C after cooling; and S4, the cooled frog is subjected to tempering. The high-strength, high-toughness and high-wear-resistance steel for the frog can be produced.
本发明公开了一种高耐磨辙叉用钢的生产方法，所述辙叉用钢按质量百分比计包含0.28～0.35％的C，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；S2，对加热后的钢坯进行轧制或锻造以获得辙叉；S3，对辙叉的轨头踏面、轨头两侧面和轨底喷射雾化的气水混合物以进行冷却，其中，开冷温度为740～820℃，轨头冷却速率为4～5℃/s，轨底冷却速率为3～5℃/s，冷却至轨头中心线温度为200～300℃时，停止喷雾冷却；S4，对冷却后的辙叉进行回火。本发明能够生产获得高强、高韧、高耐磨辙叉用钢。
Production method of high-wear-resistance steel for frog
高耐磨辙叉用钢的生产方法
YUAN JUN (Autor:in) / HAN ZHENYU (Autor:in) / WANG YUAN (Autor:in) / YANG DAWEI (Autor:in)
28.03.2023
Patent
Elektronische Ressource
Chinesisch
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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