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Melting process method for cast aluminum parts of electric locomotive pantograph

An electric locomotive and pantograph technology, which is applied in the field of smelting process of electric locomotive pantograph cast aluminum parts, can solve the problems of material waste, the demand affecting the production of locomotives, etc.

Active Publication Date: 2021-02-02
DATONG ELECTRIC LOCOMOTIVE OF NCR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, it causes waste of materials, on the other hand, it seriously affects the demand for locomotive production

Method used

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  • Melting process method for cast aluminum parts of electric locomotive pantograph
  • Melting process method for cast aluminum parts of electric locomotive pantograph
  • Melting process method for cast aluminum parts of electric locomotive pantograph

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Embodiment Construction

[0023] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] figure 1 It is a flow chart of a method for melting aluminum castings of electric locomotive pantographs involved in the present invention. Such as figure 1 Shown, a kind of electric locomotive pantograph cast aluminum parts smelting method flow process is:

[0025] 101. Preparation of cast aluminum smelting materials;

[0026] 102. Preparation of melting tools;

[0027] 103. Smelting process;

[0028] 104. Heat treatment process.

[0029] Cast aluminum smelting materials are: the molten aluminum material is directly selected and ZL201 formed aluminum ingots are selected. The chemical composition and low-magnification inspection of each batch of aluminum ingots are carried out after purchase. The chemical composition of the formed ZL201 aluminum ingots is 4.9-5.3% copp...

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Abstract

The invention discloses a smelting process for a pantograph aluminum casting of an electric locomotive, and specifically relates to a smelting process for treatment of a ZL201 material by refining analuminum liquid with a novel boron salt (Na2B4O5(oh)4.8H2O) and a zirconium salt (K2ZrF6) as refining agents and improvement of the smelting process for ZL201. Thus, the qualified rate of the mechanical properties of the ZL201 material per charge is improved to 95% or more, and the needs for locomotive production of companies are met. The smelting process mainly comprises the following steps: preparation of a cast aluminum smelting material; preparation of a smelting tool; a smelting procedure; and a heat treatment procedure. The improved smelting process adopts the refining agents for refining a structure, so the mechanical properties of the pantograph aluminum casting are improved, and the needs for locomotive production are met.

Description

technical field [0001] The invention relates to a smelting process for an 8K pantograph cast aluminum part of a railway electric locomotive. The improved smelting process adopts a refiner to refine the structure, improves the mechanical properties of the pantograph cast aluminum part, and meets the needs of locomotive production. In particular, it relates to a melting process method for cast aluminum parts of electric locomotive pantographs. Background technique [0002] On the basis of the introduction of French 8K locomotives by the National Railways, the company developed the SS7 series electric locomotives, and the pantograph on the locomotives has been improved on the technology of the 8K locomotives. All castings adopt ZL201 cast aluminum material. In the process of trial production and production, the mechanical properties of ZL201 have not been easy to meet the requirements of the national standard. It takes several times of repeated heat treatment to achieve 40% of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C1/02C22C21/12
CPCC22C1/026C22C1/06C22C21/12
Inventor 徐盛春
Owner DATONG ELECTRIC LOCOMOTIVE OF NCR