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Novel material for retraction ring of traction motor of high-speed train and preparation method of novel material

A technology for traction motors and high-speed trains is applied in the field of motor rotor material manufacturing, which can solve the problems of high strength, high elongation and high temperature resistance, and achieve the effects of high strength, high room temperature tensile strength, and high high temperature strength.

Active Publication Date: 2017-05-17
SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is that the performance of existing motor rotor shrink ring materials cannot meet the requirements of high strength, high elongation, and high temperature resistance, and a new material and its preparation for high-speed train traction motor shrink rings are provided method

Method used

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  • Novel material for retraction ring of traction motor of high-speed train and preparation method of novel material
  • Novel material for retraction ring of traction motor of high-speed train and preparation method of novel material

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Embodiment 1

[0030] A new material and a preparation method thereof for a traction motor shrink ring of a high-speed train, the composition and weight percentage of the material are:

[0031] Ni: 13.0%; Al: 1.8%; Mn: 0.5%; Fe: 0.8%; Cu: balance.

[0032] The method for preparing the shrink ring of the traction motor of the high-speed train comprises the following steps:

[0033] (1) Ingredients: Weigh the corresponding raw materials according to the stated ratio. Cu is added by electrolytic copper plate, Ni is added by electrolytic nickel plate, Al is added by pure aluminum block, Fe is added by industrial pure iron, and Mn is added by manganese Join in block mode;

[0034] (2) Melting: Melting in a vacuum intermediate frequency induction furnace, all raw materials are added together during smelting, the smelting process ensures that the vacuum degree is lower than 4Pa, and the melt surface is protected with a covering agent;

[0035] (3) Pouring: After all the alloying elements have bee...

Embodiment 2

[0040] A new material and a preparation method thereof for a traction motor shrink ring of a high-speed train, the composition and weight percentage of the material are:

[0041] Ni: 14.5%; Al: 2.3%; Mn: 1.0%; Fe: 1.3%; Cu: balance.

[0042] The method for preparing the shrink ring of the traction motor of the high-speed train comprises the following steps:

[0043] (1) Ingredients: Weigh the corresponding raw materials according to the stated ratio. Cu is added by electrolytic copper plate, Ni is added by electrolytic nickel plate, Al is added by pure aluminum block, Fe is added by industrial pure iron, and Mn is added by manganese Join in block mode;

[0044] (2) Melting: Melting in a vacuum intermediate frequency induction furnace, all raw materials are added together during smelting, the smelting process ensures that the vacuum degree is lower than 4Pa, and the melt surface is protected with a covering agent;

[0045] (3) Pouring: after all the alloying elements have bee...

Embodiment 3

[0050]A new material and a preparation method thereof for a traction motor shrink ring of a high-speed train, the composition and weight percentage of the material are:

[0051] Ni: 16.0%; Al: 2.8%; Mn: 1.5%; Fe: 1.8%; Cu: balance.

[0052] The method for preparing the shrink ring of the traction motor of the high-speed train comprises the following steps:

[0053] (1) Ingredients: Weigh the corresponding raw materials according to the stated ratio. Cu is added by electrolytic copper plate, Ni is added by electrolytic nickel plate, Al is added by pure aluminum block, Fe is added by industrial pure iron, and Mn is added by manganese Join in block mode;

[0054] (2) Melting: Melting in a vacuum intermediate frequency induction furnace, all raw materials are added together during smelting, the smelting process ensures that the vacuum degree is lower than 5Pa, and the surface of the melt is protected with a covering agent;

[0055] (3) Pouring: After all the alloying elements ha...

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Abstract

The invention discloses a novel material for a retraction ring of a traction motor of a high-speed train and a preparation method of the novel material and particularly relates to the technical field of motor rotor material manufacturing. The novel material comprises the chemical compositions including, by weight, 13.0-16.0% of Ni, 1.8-2.8% of Al, 0.5-1.5% of Mn, 0.8-1.8% of Fe, and the balance Cu. The preparation method includes the steps of proportioning, smelting, pouring, forging and annealing heat treatment. The alloy retraction ring has high strength, elongation and high-temperature strength, the strength at the room temperature reaches 850 MPa, the elongation reaches 15%, and the strength at the high temperature of 300 DEG C reaches 815 MPa. The cooper alloy retraction ring can meet the requirements for high rotation speed, high working temperature and good stability of asynchronous traction motors, and can particularly meet the requirement for good performance at 350 DEG C.

Description

technical field [0001] The invention relates to the technical field of motor rotor material manufacturing, in particular to a new material used for a contraction ring of a traction motor of a high-speed train and a preparation method thereof. Background technique [0002] With the development of rail transit and high-speed rail, the speed and power of traction motors are also increasing, so the requirements for the core component of the motor-the motor rotor are also getting higher and higher. Generally, the manufacturing technology of the high-speed asynchronous traction motor rotor adopts the guide bar to be embedded on the iron core and welded together with the end ring. The rotor is subjected to comprehensive effects such as thermal stress, electromagnetic stress, mechanical stress, residual stress, and dynamic stress during operation. When various stresses are too large, the damage to the end ring will be greater. Therefore, high-strength materials are currently used to...

Claims

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Application Information

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IPC IPC(8): C22C9/06C22C1/02C22C1/06C22F1/08
CPCC22C1/02C22C1/06C22C9/06C22F1/08
Inventor 吴斌庾高峰张航吴旭红王文斌
Owner SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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