Wearproof and tough quasi bainite points and rails and their production

A high-strength toughness, production technology technology, applied in the field of railway turnout rails, can solve the problems that the comprehensive performance index of the rail is not optimal, flashing occurs, and the short one is only more than 2 months, etc., to achieve excellent wear resistance and anti-stripping The effect of uniform performance and hardness and good wheel-rail matching relationship
CN1510155AInactive Publication Date: 2004-07-07ANGANG STEEL CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANGANG STEEL CO LTD
Publication Date
2004-07-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

A high-strength and high-toughness antiwear quasi-bainite rail for switch contains C (0.1-0.4 wt.%), Si (0.8-2.0), Mn (0.8-3.3), Cr (0-2.0), Mo (0.1-0.8), N (10-150 ppm), Al (0-0.005) and Fe (rest), and is made up through smelting in converter, reinfing, treating with RE, vacuum degassing, conticasting, rolling, air cooling to 400 deg.C, slow cooling to 200 deg.C and natural cooling. Its advantages are uniform hardness in cross section, high strength, toughness and stability, and high antiwear performance.
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Description

Technical field

[0001] The invention relates to a railway turnout steel rail, in particular to a quasi-bainite turnout steel rail with wear resistance, high strength and toughness, and a production process thereof. Background technique

[0002] Turnout is one of the weak links of line equipment. With the increase and improvement of the total weight and speed of the passing switch year by year, the impact and wear between the wheel and the rail when the train passes through the turnout are becoming more and more serious, especially when the train passes through the switch part of the turnout, the sharp rolling injury and lateral wear problem Especially prominent. The AT point rail processed by the switch rail is one of the important parts of the frog. It guides the running direction of the train, bears the squeeze, impact and wear of the moving wheels, and its performance is directly related to the safety and efficiency of railway operations.

[0003] At present, domestic railways...

Claims

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