Method for preparing high-power AC transmission power car axle

A production method and AC drive technology, applied in the direction of shafts, mechanical equipment, manufacturing tools, etc., can solve the problems of high-power locomotive axles that are unfavorable to domestic production

Inactive Publication Date: 2008-08-27
ZHUZHOU TIANLI FORGING IND
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to develop a manufacturing method for high-power locomotive axles that is more suitable for domestic production under the premise of ensuring the performance of the locomotive axles in view of the fact that the existing high-power locomotive axles are not conducive to domestic production

Method used

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Embodiment 1

[0014] A high-power locomotive axle, based on the European standard EN 13261 (2005 edition) performance index, adopts a material chemical composition formula as follows: C: 0.22% ~ 0.29%; Cr: 0.90% ~ 1.20%; Mn: 0.60 ~0.90%; Mo: 0.15%~0.30%; Si: 0.30~0.40%; P: 0.015~0.020%; S: ≤0.015%; Cu: ≤0.20%; V: ≤0.06%; Ni: ≤0.25%, And strengthen the control of steel smelting to ensure the feasibility of high-power locomotive axle technology from raw materials.

[0015] In order to make the high-power locomotive axle meet the requirements of metallographic structure while meeting the mechanical properties, the processing technology of the high-power locomotive axle is as follows:

[0016] 1. First smelt the bar according to the aforementioned chemical composition requirements;

[0017] 2. Carry out a series of forging molding on the bar to ensure the transverse mechanical properties;

[0018] 3. Rough machining of the bar after forging and forming;

[0019] 4. Carry out heat treatment o...

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Abstract

The invention relates to a method for manufacturing a vehicle shaft of a high-power alternating current electric locomotive, which comprises the following steps: utilizing European standard EN13261(2005 year edition) performance index to be standard, controlling chemical components of material in the process of smelting as follows, C 0.22%-0.29%, Cr 0.90%-1.20%, Mn 0.60-0.90%, Mo 0.15%-0.30%, Si<=0.40%, P<=0.020%, S<=0.015%, Cu<=0.20%, V<=0.06% and Ni<=0.25%. The process technique of the vehicle shaft of the high-power locomotive comprises the following steps: smelting bar material according to the above chemical component requirements, doing a series of forging for the bar material, shaping, guaranteeing horizontal mechanical property, machining and roughing bar material which is forged to shape, thermally processing the vehicle shaft of the high-power locomotive which is roughed, and finishing the vehicle shaft of the high-power locomotive which is thermally processed.

Description

technical field [0001] The invention relates to a manufacturing method of a key component of an electric locomotive, in particular to a manufacturing method and process of a high-power AC transmission electric locomotive axle, which is mainly used for various types of high-speed and high-power AC transmission electric locomotives. Background technique [0002] The axle of an electric locomotive is a key component to ensure the normal running of the locomotive. Many accidents are caused by the breakage of the axle, so the requirements for the axle of the electric locomotive are very strict. Especially with the increasing speed of locomotives and higher requirements for carrying capacity axles, the requirements for axles of high-power locomotives are more stringent, and a special European standard "EN 13261 (2005 In the standard, the performance index of the electric locomotive axle and even the composition of the axle are clearly specified. The chemical composition specified ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/22C22C38/24C22C38/44C22C38/46F16C3/02F16C33/04B21J5/00C21D9/28
Inventor 杨军佘毅云
Owner ZHUZHOU TIANLI FORGING IND
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