Alloy steel and integrated brake beam frame and manufacturing method thereof

A technology for a braking beam frame and a manufacturing method, applied in the fields of railway freight cars and metallurgical materials, can solve the problems of unqualified mechanical properties, reduced production efficiency, waste of resources, etc., and achieves the effect of good comprehensive mechanical properties

Active Publication Date: 2017-09-05
CRRC QIQIHAR ROLLING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Moreover, multiple cold repairs, hot repairs, and grinding repairs due to local cracking of the integrated brake beam frame and dimensional deformation after t

Method used

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  • Alloy steel and integrated brake beam frame and manufacturing method thereof
  • Alloy steel and integrated brake beam frame and manufacturing method thereof
  • Alloy steel and integrated brake beam frame and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1 provides an alloy steel, and its specific chemical composition is shown in Table 4.

[0048] The alloy steel of this example is processed by using the scheme 3 recorded in the document "Li Jie, Tang Zhenying, Zheng Guanxing. Research on Forming Technology of Integrated Brake Beam [J], Forging and Stamping, 2014(13): 65-69." , to obtain an integrated brake beam frame.

[0049] Take the sample of the integrated brake beam frame in this embodiment, perform mechanical polishing after rough grinding and fine grinding, and corrode with nitric acid alcohol solution (4%), under different magnifications, the metallographic photos of the sample are as follows: image 3 shown. It can be seen that the integrated brake beam sample of this embodiment has fine grains, and the microstructure is uniformly distributed ferrite and pearlite, that is, a uniform normalized tough structure, and the iron The sum of the volume content of ferrite and pearlite is more than 95%.

...

Embodiment 2-4

[0058] Examples 2-4 respectively provide an alloy steel, whose chemical composition is shown in Table 4.

[0059] The alloy steel provided in embodiment 2-4 is used as raw material to process and manufacture the integrated brake beam frame, and its specific process includes the following steps:

[0060] S1: The alloy steel is rolled according to a conventional process to obtain a section steel.

[0061] S2: Heating the section steel. The equipment used is the HKTP-450KW CNC induction heating machine tool production line (rated output power 450KW) produced by Hubei Shiyan Hengjin Technology Co., Ltd., and the heating frequency is controlled by adjusting the output power of the equipment. Specifically The process parameters of heat treatment are as shown in Table 6 below:

[0062] Table 6 Embodiment 2-4 Process parameters of heat treatment of medium steel

[0063]

[0064] Among them, in the third stage, the temperature of the shaped steel rises to about 740°C, in the sixth...

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Abstract

The invention provides alloy steel and an integrated brake beam frame and a manufacturing method thereof. The alloy steel comprises the following components in percentage by mass: 0.12-0.18% of carbon, 0.25-0.35% of silicon, 1.20-1.50% of manganese, 0.001-0.015% of phosphorus, 0.001-0.010% of sulfur, 0.01-0.08% of niobium, 0.01-0.45% of nickel, 0.20-0.30% of chromium, 0.015-0.050% of aluminum, 0.01-0.15% of copper, 0.08-0.14% of vanadium, 0.01-0.20% of molybdenum, 0.06-0.10% of titanium, and the balance of iron. Through coordinative cooperation among chemical components of the alloy steel, the alloy steel is excellent in process adaptability, and can serve as raw materials of the integrated brake beam frame, the prepared integrated brake beam frame is excellent and stable in performances, and the once pass percent of products is prominently increased.

Description

technical field [0001] The invention relates to an alloy steel and integrated brake beam frame and a manufacturing method thereof, belonging to the technical fields of metallurgical materials and railway wagons. Background technique [0002] In the early 1980s, North America developed integrated braking technology and promoted it on railway wagons. With the rapid development of heavy-haul railway freight technology at home and abroad, integrated braking technology has been widely used. Compared with the lever arrangement of the traditional basic brake device, the integrated brake device has the advantages of compact structure, high transmission efficiency and light weight, which can effectively use the vehicle space, reduce the vehicle's own weight, and increase the vehicle's load capacity. [0003] In the integrated brake device of railway freight cars, the integrated brake beam is the most critical component. figure 1 It is a cross-sectional view of the integrated brake ...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/48C22C38/42C22C38/44C22C38/46C22C38/50C22C38/06C21D8/00B61H13/36
CPCB61H13/36C21D8/005C21D2211/005C21D2211/009C22C38/002C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/46C22C38/48C22C38/50
Inventor 王安
Owner CRRC QIQIHAR ROLLING CO LTD
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