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A kind of rotor guide bar and preparation method thereof

A rotor guide bar and formula technology, applied in the field of materials, can solve the problems of cumbersome preparation methods and low production efficiency, and achieve the effect of simple process and uniform grain size

Active Publication Date: 2022-05-13
无锡天宝电机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation method is cumbersome and the production efficiency is low

Method used

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  • A kind of rotor guide bar and preparation method thereof

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Effect test

Embodiment 1

[0049] This embodiment provides a method for preparing a rotor conductor, and the method includes the following steps:

[0050] In terms of mass percentage, the rotor bar includes: Zr 0.09wt%, Ni 0.2wt%, Co 0.2wt%, Mg0.35wt%, Si 1.5wt%, Al 0.3wt% and Ag 0.06wt%, the balance is Copper and unavoidable impurities; among the unavoidable impurities, Fe≤0.05wt% and Pb≤0.05wt%.

[0051] (1) ball milling and mixing zirconium powder, magnesium powder, silicon powder, aluminum powder, silver powder, copper plate and binder according to the formula amount, and use absolute ethanol to immerse the abrasive during ball milling to obtain the first abrasive with an average particle size of 30 μm; The binding agent is an epoxy resin, and the addition amount of the binding agent is 11wt% of the first grinding material;

[0052] (2) Heat treating the first grinding material obtained in step (1) at 700° C. to remove the binder in the first grinding material, and obtain the second grinding materi...

Embodiment 2

[0056] This embodiment provides a method for preparing a rotor conductor, and the method includes the following steps:

[0057] In terms of mass percentage, the rotor bar includes: Zr 0.09wt%, Ni 0.15wt%, Co 0.25wt%, Mg 0.32wt%, Si 1.2wt%, Al 0.35wt% and Ag 0.07wt%, the balance is Copper and unavoidable impurities; among the unavoidable impurities, Fe≤0.05wt% and Pb≤0.05wt%.

[0058] (1) ball milling and mixing zirconium powder, magnesium powder, silicon powder, aluminum powder, silver powder, copper plate and binder according to the formula amount, use absolute ethanol to immerse the abrasive during ball milling to obtain the first abrasive with an average particle size of 35 μm; The binding agent is a phenolic resin, and the addition amount of the binding agent is 11.5wt% of the first grinding material;

[0059] (2) heat treating the first grinding material obtained in step (1) at 750° C. to remove the binder in the first grinding material, and obtain the second grinding ma...

Embodiment 3

[0063] This embodiment provides a method for preparing a rotor conductor, and the method includes the following steps:

[0064] In terms of mass percentage, the rotor bar includes: Zr 0.08wt%, Ni 0.1wt%, Co 0.3wt%, Mg0.3wt%, Si 1wt%, Al 0.4wt% and Ag 0.06wt%, the balance is copper and unavoidable impurities; among the unavoidable impurities, Fe≤0.05wt% and Pb≤0.05wt%.

[0065] (1) ball milling and mixing zirconium powder, magnesium powder, silicon powder, aluminum powder, silver powder, copper plate and binder according to the formula amount, use absolute ethanol to immerse the abrasive during ball milling to obtain the first abrasive with an average particle size of 40 μm; The binding agent is a phenolic resin, and the addition amount of the binding agent is 12wt% of the first grinding material;

[0066] (2) Heat treating the first grinding material obtained in step (1) at 800° C. to remove the binder in the first grinding material, and obtain the second grinding material af...

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Abstract

The invention provides a rotor guide bar and a preparation method thereof. The rotor guide bar includes Zr, Ni, Co, Mg, Si, Al, Ag, Cu and unavoidable impurities. The preparation method comprises the following steps: The formula amount is ball milled and mixed with zirconium powder, magnesium powder, silicon powder, aluminum powder, silver powder, copper plate and binder. During ball milling, absolute ethanol is used to immerse the grinding material to obtain the first grinding material; the first grinding material is heat treated, and the second grinding material is obtained after cooling. Second grinding material: mix nickel powder, cobalt powder and the second grinding material according to the formula amount, use absolute ethanol to immerse the grinding material during ball milling, and obtain the third grinding material; carry out hot isostatic pressing sintering after cold isostatic pressing, heat preservation treatment After natural cooling, the rotor conductor is obtained. The preparation method is simple and practicable, and the prepared rotor bar still has excellent tensile strength, elongation and electrical conductivity at 400° C., which meets the use requirements of the asynchronous motor.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a conductive material and a preparation method thereof, in particular to a rotor guide bar and a preparation method thereof. Background technique [0002] The rotor is the core component of an asynchronous motor, which can convert electrical energy into kinetic energy through electromagnetic action. Usually, the rotor of the asynchronous motor is embedded on the iron core with guide bars and welded together with the end rings. Therefore, the performance and quality of the guide bars are directly related to the performance of the asynchronous motor. [0003] During the operation of the rotor, due to the comprehensive action of various stresses such as electromagnetic stress, mechanical stress, residual stress, and dynamic stress, as well as the influence of temperature rise, it will cause the softening phenomenon of the rotor guide bars due to temperature rise, thus affecting The...

Claims

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Application Information

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IPC IPC(8): C22C9/10B22F3/04B22F3/15B22F5/00C22C1/05H02K15/00
Inventor 施展
Owner 无锡天宝电机有限公司
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