Railway brake beam material XWQ470E and machining method

A technology for braking beams and railways, applied in the direction of improvement of process efficiency, furnace type, furnace, etc., can solve problems such as low fatigue limit, low performance index, and easy surface cracks, so as to improve impact toughness and reduce Widmanstatten structure Content, the effect of improving performance indicators

Active Publication Date: 2017-08-18
SHANDONG XIWANG SPECIAL STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] (1) The fatigue limit is low, and safe driving under speed-up and high-speed conditions cannot be guaranteed;
[0005] (2) The m...

Method used

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  • Railway brake beam material XWQ470E and machining method
  • Railway brake beam material XWQ470E and machining method
  • Railway brake beam material XWQ470E and machining method

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Embodiment Construction

[0052] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples and accompanying drawings. This embodiment is only used to explain the present invention, and does not constitute a limitation to the protection scope of the present invention.

[0053] A railway brake beam material XWQ470E, its composition (Wt.%) is: C: 0.12~0.20, Si: 0.25~0.35, Mn: 1.20~1.50, P≤0.020, S≤0.010, Cr: 0.20~0.30, Ni: 0.30-0.55, Mo≤0.20, V: 0.08-0.14, Al: 0.015-0.035, Nb: 0.015-0.030, Ce: 0.001-0.03, and the balance is composed of iron and unavoidable impurities.

[0054] The preparation method of railway brake beam material XWQ470E comprises the following process steps:

[0055] (1) Electric furnace smelting:

[0056] The raw materials are composed of molten iron, pig iron block, and scrap steel. Slag steel is not allowed, and nickel-containing pig iron is mixed in proportion; when hot charging molten ...

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Abstract

The invention discloses a railway brake beam material XWQ470E and a machining method. The material comprises the following components: 0.12-0.20 of C, 0.25-0.35 of Si, 1.20-1.50 of Mn, P not more than 0.020, S not more than 0.010, 0.20-0.30 of Cr, 0.30-0.55 of Ni, Mo not more than 0.20, 0.08-0.14 of V, 0.015-0.035 of Al, 0.015-0.030 of Nb, and 0.001-0.03 of Ce; in a continuous casting and straightening procedure, the straightening temperature of a continuous-cast blank is controlled within 930-950 DEG C; the normalization temperature is 920+-20 DEG C; the continuous-cast blank is insulated by 40 minutes, and then, is cooled by air; and the tempering temperature is 480+-30 DEG C. The material is prepared through hot cutting, drawing and shaping by brand new component design and production process, and is excellent in manufacturability and stable in quality. In the component design process, such alloy elements as nickel, niobium, vanadium and rare earth are added, so that the overall toughness, the welding performance and the wear resistance of the material are improved, and the excellent application effect is achieved.

Description

technical field [0001] The invention relates to the technical field of material preparation, and is especially suitable for materials used in vehicles and a heat treatment method thereof, specifically a railway brake beam material XWQ470E and a processing method thereof. Background technique [0002] With the speed-up, heavy-duty and development of new-type freight cars, new models have more and more strict requirements on the braking and balancing brake beams. The dispersion is large, thus endangering the safety of train driving. For this reason, XWQ470E, a material for speed-up, heavy-duty, and new truck brake beams, was designed and developed. [0003] The current steel materials for truck brake beams may have the following problems during production and use: [0004] (1) The fatigue limit is low, and safe driving under speed-up and high-speed conditions cannot be guaranteed; [0005] (2) The material is prone to surface cracks after rolling; [0006] (3) The performa...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/44C22C38/46C22C38/06C22C38/48C22C33/06C21C5/52C21C7/06C21C7/10C21D1/28C21D8/00
CPCC21C5/52C21C7/06C21C7/10C21D1/28C21D8/005C22C33/06C22C38/005C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46C22C38/48Y02P10/20
Inventor 王棣张健张灵通朱林林陈健信霖王洪钦李文双王远明王俊利高涛成广超徐明王塞杨玉国夏应兵张刚毕延广付鹏冲张良王涛
Owner SHANDONG XIWANG SPECIAL STEEL
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