CN104889408A - Method of processing auto motor rotor - Google Patents
Method of processing auto motor rotor Download PDFInfo
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- CN104889408A CN104889408A CN201510319594.7A CN201510319594A CN104889408A CN 104889408 A CN104889408 A CN 104889408A CN 201510319594 A CN201510319594 A CN 201510319594A CN 104889408 A CN104889408 A CN 104889408A
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Abstract
The invention relates to a method of processing an auto motor rotor, and aims to simplify the processing procedure and improve the processing efficiency. An electro-mobile motor rotor comprises a rotor body which is formed by metallurgical processing of powder. The method comprises the steps: mixing powder metallurgy components in parts by weight: 4.0-4.5% of Cu (Copper), 0.18-0.23% of C (Carbon), 0.025-0.1% of MnS (Manganese Sulfide), 0.05-0.1% of Fe2O3 (Ferric Oxide), 1.2-1.5% of ZrO2 (Zirconium Dioxide), and the rest of Fe (Ferrum) and impurities; forming the mixed powder metallurgy components in a mould through dry pressing, carrying out isostatic compaction, sintering, shaping and accurately grinding to obtain a finished product. Compared with the prior art, the electro-mobile motor rotor provided by the invention is high in rotor precision, light in weight, good in rigidity, good in wear resistance and durable in use; furthermore, the density of the rotor is 6.1-6.5g/cu.cm, the rigidity is HRB63-79, and the surface roughness height is Ra 0.08-0.02 [mu]m.
Description
Technical field
The present invention relates to a kind of electric-vehicle part, be specifically related to a kind of processing method of car motor rotor.
Background technology
Electric automobile (BEV), is commonly called as new-energy automobile, refers to vehicle power to be power, drives the vehicle of wheels travel with motor.Due to less relative to orthodox car to ambient influnence, its prospect is extensively had an optimistic view of, and is one of effective way solving motor vehicle exhaust emission pollution.
The rotor of motor in electric automobile, the rotary part namely in motor, roughly in shaft-like.But because it needs coupling car load service life, and car load fully loaded after more than at least 1 ton usually, operating load is heavier.So all very high to the machining accuracy of rotor, performance, the requirement in service life.Also there are some producers oneself grasp and found out the method for rotor machining in prior art, guarantee machining accuracy and the serviceability of rotor.But these processing methods are general all more loaded down with trivial details, and processing cost is higher.
Powder metallurgy is with metal dust (or mixture of metal dust and non-metal powder) as raw material, through overmolding and sintering, manufactures the technology of metal material, composite and all kinds goods.Powder metallurgic method has similar place to production pottery, all belongs to sintered powder technique.Because PM technique is with the final processing technology finished product of powder, so PRODUCT FORM DESIGN can be relatively more flexible, and working (machining) efficiency is high; It has become the key solving new material problem.
Summary of the invention
The object of the present invention is to provide a kind of processing method of car motor rotor, to simplify process, improve performance and the working (machining) efficiency of rotor.
The object of the invention is to be achieved through the following technical solutions:
A processing method for car motor rotor, by powder metallurgy machine-shaping, step comprises:
(1) powder metallurgy component is by following weight ratio formula: 4.0-4.5%Cu, 0.18-0.23%C, 0.025-0.1%MnS, 0.05-0.1%Fe
2o
3, 1.2-1.5%ZrO
2remaining as Fe and impurity;
(2) mixed-powder metallurgical composition, dry-pressing formed in a mold, briquetting pressure 50-100MPa, dwell time 15-20min;
(3) isostatic compaction, briquetting pressure 200-250MPa, dwell time 10-12min;
(4) sinter, sintering temperature 1150-1180 DEG C, sintering velocity 90-95mm/min;
(5) shaping, shaping pressure 100-120T;
(6) finished product is refined to obtain.
Preferably, described processing method comprises the following steps:
(1) powder metallurgy component is got the raw materials ready by following weight ratio: 4.5%Cu, 0.18%C, 0.1%MnS, 0.05%Fe
2o
3, 1.3%ZrO
2remaining as Fe and inevitable impurity;
(2) mixed-powder metallurgical composition, dry-pressing formed in a mold, briquetting pressure 50MPa, dwell time 20min;
(3) isostatic compaction, briquetting pressure 220MPa, dwell time 10min;
(4) sinter, sintering temperature 1150 DEG C, sintering velocity 95mm/min;
(5) shaping, shaping pressure 100T;
(6) refine modification of surfaces and obtain finished product.
Preferably, described processing method comprises the following steps:
(1) powder metallurgy component is got the raw materials ready by following weight ratio: 4%Cu, 0.2%C, 0.03%MnS, 0.07%Fe
2o
3, 1.4%ZrO
2remaining as Fe and inevitable impurity;
(2) mixed-powder metallurgical composition, dry-pressing formed in a mold, briquetting pressure 100MPa, dwell time 15min;
(3) isostatic compaction, briquetting pressure 250MPa, dwell time 12min;
(4) sinter, sintering temperature 1180 DEG C, sintering velocity 90mm/min;
(5) shaping, shaping pressure 120T;
(6) refine modification of surfaces and obtain finished product.
Compared with prior art, motor in electric automobile rotor precision of the present invention is high, lightweight, and hardness is good, and wearability is good, durable in use.Rotor density: 6.1-6.45g/cm
3; Between hardness HRB:63-70; The roughness value Ra0.08-0.02 μm on surface.Present invention improves powder metallurgy component formula, adopt dry-pressing shaping in conjunction with the mode of isostatic compaction, efficiently solve existing processing method yield rate low, the problems such as efficiency is low, and production cost is high, and Product Precision is low.
Detailed description of the invention
Understand technical scheme of the present invention for ease of those skilled in the art and understand corresponding technique effect and technical advantage, preferred embodiment is provided; But technology of the present invention is not limited to following embodiment.
Embodiment 1
The processing method of car motor rotor, comprises the following steps:
(1) powder metallurgy component is got the raw materials ready by following weight ratio: 4.5%Cu, 0.18%C, 0.1%MnS, 0.05%Fe
2o
3, 1.3%ZrO
2remaining as Fe and inevitable impurity;
(2) mixed-powder metallurgical composition, dry-pressing formed in a mold, briquetting pressure 50MPa, dwell time 20min;
(3) isostatic compaction, briquetting pressure 220MPa, dwell time 10min;
(4) sinter, sintering temperature 1150 DEG C, sintering velocity 95mm/min;
(5) shaping, shaping pressure 100T;
(6) refine modification of surfaces and obtain finished product.
The important technological parameters of the detection of product: density: 6.26g/cm
3; Hardness: HRB 71; The roughness value Ra0.06 μm on surface.
Embodiment 2
The processing method of car motor rotor, comprises the following steps:
(1) powder metallurgy component is got the raw materials ready by following weight ratio: 4%Cu, 0.2%C, 0.03%MnS, 0.07%Fe
2o
3, 1.4%ZrO
2remaining as Fe and inevitable impurity;
(2) mixed-powder metallurgical composition, dry-pressing formed in a mold, briquetting pressure 100MPa, dwell time 15min;
(3) isostatic compaction, briquetting pressure 250MPa, dwell time 12min;
(4) sinter, sintering temperature 1180 DEG C, sintering velocity 90mm/min;
(5) shaping, shaping pressure 120T;
(6) refine modification of surfaces and obtain finished product.
The important technological parameters of the detection of product: density: 6.33g/cm
3; Hardness: HRB 70; The roughness value Ra0.06 μm on surface.
Embodiment 3
The processing method of car motor rotor, comprises the following steps:
(1) powder metallurgy component is got the raw materials ready by following weight ratio: 4.3%Cu, 0.22%C, 0.08%MnS, 0.1%Fe
2o
3, 1.5%ZrO
2remaining as Fe and inevitable impurity;
(2) mixed-powder metallurgical composition, dry-pressing formed in a mold, briquetting pressure 60MPa, dwell time 20min;
(3) isostatic compaction, briquetting pressure 220MPa, dwell time 11min;
(4) sinter, sintering temperature 1170 DEG C, sintering velocity 90mm/min;
(5) shaping, shaping pressure 120T;
(6) refine modification of surfaces and obtain finished product.
The important technological parameters of the detection of product: density: 6.26g/cm
3; Hardness: HRB 66; The roughness value Ra0.06 μm on surface.
Embodiment 4
The processing method of car motor rotor, comprises the following steps:
(1) powder metallurgy component is got the raw materials ready by following weight ratio: 4.1%Cu, 0.20%C, 0.03%MnS, 0.085%Fe
2o
3, 1.3%ZrO
2remaining as Fe and inevitable impurity;
(2) mixed-powder metallurgical composition, dry-pressing formed in a mold, briquetting pressure 80MPa, dwell time 15min;
(3) isostatic compaction, briquetting pressure 200MPa, dwell time 10min;
(4) sinter, sintering temperature 1180 DEG C, sintering velocity 95mm/min;
(5) shaping, shaping pressure 120T;
(6) refine modification of surfaces and obtain finished product.
The important technological parameters of the detection of product: density: 6.16g/cm
3; Hardness: HRB 65; The roughness value Ra0.06 μm on surface.
Claims (3)
1. a processing method for car motor rotor, by powder metallurgy machine-shaping, step comprises:
(1) powder metallurgy component is by following weight ratio formula: 4.0-4.5%Cu, 0.18-0.23%C, 0.025-0.1%MnS, 0.05-0.1%Fe
2o
3, 1.2-1.5%ZrO
2remaining as Fe and impurity;
(2) mixed-powder metallurgical composition, dry-pressing formed in a mold, briquetting pressure 50-100MPa, dwell time 15-20min;
(3) isostatic compaction, briquetting pressure 200-250MPa, dwell time 10-12min;
(4) sinter, sintering temperature 1150-1180 DEG C, sintering velocity 90-95mm/min;
(5) shaping, shaping pressure 100-120T;
(6) finished product is refined to obtain.
2. the processing method of car motor rotor according to claim 1, is characterized in that: described processing method comprises the following steps:
(1) powder metallurgy component is got the raw materials ready by following weight ratio: 4.5%Cu, 0.18%C, 0.1%MnS, 0.05%Fe
2o
3, 1.3%ZrO
2remaining as Fe and inevitable impurity;
(2) mixed-powder metallurgical composition, dry-pressing formed in a mold, briquetting pressure 50MPa, dwell time 20min;
(3) isostatic compaction, briquetting pressure 220MPa, dwell time 10min;
(4) sinter, sintering temperature 1150 DEG C, sintering velocity 95mm/min;
(5) shaping, shaping pressure 100T;
(6) refine modification of surfaces and obtain finished product.
The important technological parameters of the detection of product: density: 6.24g/cm
3; Hardness: HRB 68; The roughness value Ra0.06 μm on surface.
3. the processing method of car motor rotor according to claim 1, is characterized in that: described processing method comprises the following steps:
(1) powder metallurgy component is got the raw materials ready by following weight ratio: 4%Cu, 0.2%C, 0.03%MnS, 0.07%Fe
2o
3, 1.4%ZrO
2remaining as Fe and inevitable impurity;
(2) mixed-powder metallurgical composition, dry-pressing formed in a mold, briquetting pressure 100MPa, dwell time 15min;
(3) isostatic compaction, briquetting pressure 250MPa, dwell time 12min;
(4) sinter, sintering temperature 1180 DEG C, sintering velocity 90mm/min;
(5) shaping, shaping pressure 120T;
(6) refine modification of surfaces and obtain finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510319594.7A CN104889408A (en) | 2015-06-09 | 2015-06-09 | Method of processing auto motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510319594.7A CN104889408A (en) | 2015-06-09 | 2015-06-09 | Method of processing auto motor rotor |
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|---|---|
| CN104889408A true CN104889408A (en) | 2015-09-09 |
Family
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106256465A (en) * | 2016-08-22 | 2016-12-28 | 安徽高匠农业科技有限公司 | A kind of restorative procedure of car motor rotor |
| CN109128189A (en) * | 2018-07-16 | 2019-01-04 | 扬州海昌新材股份有限公司 | A kind of manufacturing method adjusting the speed three-jaw ring gear |
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| US4329175A (en) * | 1977-04-01 | 1982-05-11 | Rolls-Royce Limited | Products made by powder metallurgy and a method therefore |
| US4526747A (en) * | 1982-03-18 | 1985-07-02 | Williams International Corporation | Process for fabricating parts such as gas turbine compressors |
| CN1770338A (en) * | 2005-09-08 | 2006-05-10 | 浙江升华强磁材料有限公司 | Forming process for radially oriented magnetic ring |
| CN101153364A (en) * | 2006-09-25 | 2008-04-02 | 天津得鑫电机有限公司 | Method for manufacturing powder sintered asynchronization solid electric machine rotor alloy material |
| CN102592819A (en) * | 2011-01-14 | 2012-07-18 | 阿尔法纳技术有限公司 | Method for manufacturing ring magnet and rotor having ring magnet |
| CN102710039A (en) * | 2012-06-15 | 2012-10-03 | 扬州保来得科技实业有限公司 | Automobile starting motor rotor and method for producing same |
| CN103825381A (en) * | 2012-11-16 | 2014-05-28 | 姜堰市高新粉末冶金有限公司 | Motor powder metallurgy rotor formed through near-net shaping, and manufacturing method thereof |
-
2015
- 2015-06-09 CN CN201510319594.7A patent/CN104889408A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4329175A (en) * | 1977-04-01 | 1982-05-11 | Rolls-Royce Limited | Products made by powder metallurgy and a method therefore |
| US4526747A (en) * | 1982-03-18 | 1985-07-02 | Williams International Corporation | Process for fabricating parts such as gas turbine compressors |
| CN1770338A (en) * | 2005-09-08 | 2006-05-10 | 浙江升华强磁材料有限公司 | Forming process for radially oriented magnetic ring |
| CN101153364A (en) * | 2006-09-25 | 2008-04-02 | 天津得鑫电机有限公司 | Method for manufacturing powder sintered asynchronization solid electric machine rotor alloy material |
| CN102592819A (en) * | 2011-01-14 | 2012-07-18 | 阿尔法纳技术有限公司 | Method for manufacturing ring magnet and rotor having ring magnet |
| CN102710039A (en) * | 2012-06-15 | 2012-10-03 | 扬州保来得科技实业有限公司 | Automobile starting motor rotor and method for producing same |
| CN103825381A (en) * | 2012-11-16 | 2014-05-28 | 姜堰市高新粉末冶金有限公司 | Motor powder metallurgy rotor formed through near-net shaping, and manufacturing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106256465A (en) * | 2016-08-22 | 2016-12-28 | 安徽高匠农业科技有限公司 | A kind of restorative procedure of car motor rotor |
| CN106256465B (en) * | 2016-08-22 | 2018-08-07 | 泉州台商投资区华奥电子科技有限公司 | A kind of restorative procedure of car motor rotor |
| CN109128189A (en) * | 2018-07-16 | 2019-01-04 | 扬州海昌新材股份有限公司 | A kind of manufacturing method adjusting the speed three-jaw ring gear |
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Application publication date: 20150909 |