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A kind of high-strength 23mn2crnimovrea steel for railway train connection and preparation method thereof

A high-strength, train-based technology, applied in the field of railway steel, can solve problems such as cold and brittle fracture, and achieve the effects of stable strength and toughness, improved low-temperature impact performance, and high mechanical properties

Active Publication Date: 2020-11-06
SHANDONG XIWANG SPECIAL STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, under the working conditions in the extremely cold zone (-60°C), it is very easy to have cold and brittle fractures.

Method used

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  • A kind of high-strength 23mn2crnimovrea steel for railway train connection and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment

[0041] The high-strength 23MnCrNiMoVREA steel used for railway train connection provided by the embodiment of the present invention is designed according to the weight percentages provided in Table 1 respectively,

[0042] Table 1 Chemical composition internal control control range / %

[0043] furnace number C Si mn V Al P S Cr Cu Ce Ni Mo 1 0.22 0.22 1.25 0.02 0.018 0.011 0.002 0.45 0.015 0.002 0.38 0.22 2 0.24 0.35 1.45 0.04 0.035 0.010 0.001 0.55 0.020 0.004 0.48 0.28 3 0.23 0.28 1.35 0.03 0.027 0.010 0.001 0.50 0.018 0.003 0.43 0.25 4 0.23 0.32 1.30 0.027 0.023 0.009 0.001 0.50 0.019 0.003 0.40 0.27 5 0.23 0.29 1.32 0.02 0.024 0.008 0.001 0.51 0.017 0.004 0.43 0.25 6 0.23 0.27 1.33 0.03 0.029 0.012 0.001 0.50 0.015 0.004 0.43 0.25 7 0.24 0.28 1.34 0.03 0.032 0.011 0.001 0.50 0.016 0.002 0.42 0.24 8 0.23 0.28 1.33 0.03 0.030 0.008...

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Abstract

The invention provides the high-strength 23Mn2CrNiMnVERA steel for railway train connection and a preparation method thereof. The 23Mn2CrNiMnVERA steel comprises the following components of carbon, silicon, manganese, vanadium, aluminum, chromium, molybdenum, nickel, cerium, copper, phosphorus, sulfur, Fe and non-removable impurities; the preparation method comprises the steps of molten iron pretreatment, converter smelting, LF refining, VD vacuum refining and continuous casting tapping. The high-strength 23Mn2CrNiMoVREA steel for connection has the advantages of being easy to weld, high in tensile property and high in yield strength at low temperature (-60 DEG C); and the preparation method of the high-strength 23Mn2CrNiMnVERA steel for the railway train connection has the advantages of being easy to control in the process and suitable for popularization.

Description

technical field [0001] The invention relates to the technical field of railway steel, and relates to a high-strength 23Mn2CrNiMoVREA steel for railway train connection and a preparation method thereof. Background technique [0002] The connecting rod of the railway vehicle in our country is an important part of the coupler buffer device on the railway vehicle. It plays a vital role in the traction and coupling process of the vehicle. For example, when the vehicle is moving forward normally, the connecting rod realizes Traction and linkage require sufficient tensile strength to complete the work; when a vehicle collides and the vehicle behind rushes towards the vehicle in front under inertia, the connecting rod can buffer the inertial force of the vehicle behind and release the force. Breakdown and vertical transfer. [0003] During the use of the connecting rod, it not only needs to bear the force, but also needs to adapt to different use environments. For example, under t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/04C21C7/00C21C7/06C21C7/064C21C7/10C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/46
Inventor 王棣张庆生朱林林张灵通刘金池张刚李文双董金龙信世奇付鹏冲刘菲杨茜茜程建业陈雷
Owner SHANDONG XIWANG SPECIAL STEEL