Repair method for automobile motor rotor

A motor rotor and repair method technology, which is applied in the field of motor components, can solve problems such as low precision and strength, low motor efficiency, and large frictional resistance, and achieve the effects of simplifying equipment, increasing efficiency, and reducing frictional resistance

Active Publication Date: 2016-12-28
海宁市洛溪实业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing powder metallurgy method can also repair the repaired motor rotor, its accuracy and strength are generally low, and the frictional resistance is large, resulting in low motor efficiency

Method used

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  • Repair method for automobile motor rotor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for repairing an automobile motor rotor, comprising the following steps:

[0020] (1) Mixing materials: take by weight percentage the copper of 2.6%, the silicon of 0.5%, the graphite of 0.7%, the titanium of 0.01%, the boron of 0.05%, the nickel of 2.4%, the manganese of 0.6%, the manganese of 0.3% Molybdenum, the balance is iron and unavoidable impurities, mixed into mixed powder;

[0021] (2) Primary baking: Install the rotor pressing mold on the press, put mixed powder into the cavity of the mold, heat up to 130°C at a heating rate of 2°C / min, press into a primary baking billet, and keep warm for 10h. The pressing pressure is 600MPa;

[0022] (3) Secondary baking: Install the rotor pressing mold on the press, put the first-time baking billet into the mold cavity, heat up to 135°C at a heating rate of 2°C / min, and press it into the second baking Blank, heat preservation 8h, pressing pressure 650MPa;

[0023] (4) Sintering: Sinter the secondary baked compa...

Embodiment 2

[0027] A method for repairing an automobile motor rotor, comprising the following steps:

[0028] (1) Mixing: Weigh 0.1% copper, 0.4% silicon, 0.9% graphite, 0.03% titanium, 0.03% boron, 1.8% nickel, 0.5% manganese, 0.4% Molybdenum, the balance is iron and unavoidable impurities, mixed into mixed powder;

[0029] (2) Primary baking: install the rotor pressing mold on the press, put mixed powder into the cavity of the mold, heat up to 140°C at a heating rate of 2°C / min, press into a primary baking billet, and keep warm for 10h. The pressing pressure is 600MPa;

[0030] (3) Secondary baking: Install the rotor pressing mold on the press, put the primary baking billet into the cavity of the mold, heat up to 130°C at a heating rate of 2°C / min, and press for secondary baking Blank, heat preservation 8h, pressing pressure 680MPa;

[0031] (4) Sintering: Sinter the secondary baked compact in a vacuum pressure sintering furnace to obtain a sintered material, the vacuum degree is les...

Embodiment 3

[0035] A method for repairing an automobile motor rotor, comprising the following steps:

[0036] (1) Mixing materials: take by weight percentage the copper of 1.2%, the silicon of 0.2%, the graphite of 0.5%, the titanium of 0.02%, the boron of 0.01%, the nickel of 2.1%, the manganese of 0.75%, the manganese of 0.2% Molybdenum, the balance is iron and unavoidable impurities, mixed into mixed powder;

[0037] (2) Primary baking: install the rotor pressing mold on the press, put mixed powder into the cavity of the mold, heat up to 135°C at a heating rate of 2°C / min, press into a primary baking billet, and keep warm for 10h. The pressing pressure is 680MPa;

[0038] (3) Secondary baking: Install the rotor pressing mold on the press, put the first-time baking billet into the mold cavity, heat up to 135°C at a heating rate of 2°C / min, and press it into the second baking Blank, heat preservation 8h, pressing pressure 640MPa;

[0039] (4) Sintering: Sinter the secondary baked comp...

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Abstract

The invention discloses a repair method for an automobile motor rotor and belongs to the technical field of motor part repair. The repair method includes the following steps of material mixing; primary dry-pressing; secondary dry-pressing; sintering; heat treatment; shaping. Graphite is added into raw materials, so that the abrasion resistance and lubricity of the rotor are improved, friction resistance is reduced, the efficiency of a motor is improved, and the density and hardness of the rotor are improved; the motor rotor manufactured from mixed powder in the formula is dense in structure, good in micro-structure, fewer in pore and excellent in structural rigidity, hardness, fatigue resistance and tensile strength; due to the adoption of die pressing, equipment is simplified, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of motor components, in particular to a method for repairing an automobile motor rotor. Background technique [0002] The motor rotor is the rotating part of the motor. The motor is composed of two parts: the rotor and the stator. The motor rotor is divided into a motor rotor and a generator rotor. Although the existing powder metallurgy method can also repair the repaired motor rotor, its precision and strength are generally low, and the frictional resistance is large, resulting in low motor efficiency. Contents of the invention [0003] The object of the present invention is to provide a method for repairing the rotor of an automobile motor. [0004] The purpose of the present invention can be achieved through the following technical solutions: [0005] A method for repairing an automobile motor rotor, comprising the following steps: [0006] (1) Mixing: Weigh 0.1-2.6% copper, 0.2-0.5% silicon, 0.5-0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/06B22F1/00C22C38/16C22C38/02C22C38/14C22C38/08C22C38/04C22C38/12
CPCB22F1/0003B22F7/062B22F2007/068C22C38/02C22C38/04C22C38/08C22C38/12C22C38/14C22C38/16
Inventor 黄国元
Owner 海宁市洛溪实业发展有限公司
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