CN101154855A - Method for producing oxygen body magnetic pole of electric motor - Google Patents
Method for producing oxygen body magnetic pole of electric motor Download PDFInfo
- Publication number
- CN101154855A CN101154855A CNA2006100159691A CN200610015969A CN101154855A CN 101154855 A CN101154855 A CN 101154855A CN A2006100159691 A CNA2006100159691 A CN A2006100159691A CN 200610015969 A CN200610015969 A CN 200610015969A CN 101154855 A CN101154855 A CN 101154855A
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- Prior art keywords
- magnetic pole
- percent
- electric motor
- grinding
- oxygen body
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- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides a method of producing an electric motor oxygen body magnetic pole. 8.8 percent Sr0, 86 percent Fe2O3, 2.0 percent Al2O3, 0.4 percent SrCO3, 0.5 percent Cr2O3, 0.1 percent CaCO3, 0.5 percent SiO2, 0.8 percent H3BO3 are mixed into material powder and ground, pulped and pressed, and water ratio of the green pressing in the oven is controlled. Then the electric motor oxygen body magnetic pole is formed by being sintered, checked and ground. The electric motor oxygen body magnetic pole has the advantages of excellent anti-high temperature and anti-low temperature performances, low demagnetization ratio and improved starting performance of the electrical motor.
Description
Technical field
The present invention relates to a kind of method for producing oxygen body magnetic pole of electric motor.
Background technology
The electric motor of automobile tile-shaped magnet improves residual magnetic flux density, examines coercitive quick decline in must causing, and directly influences life-span, reliability and the durability of automobile starter, the magnet anti-high and low-temp poor performance of domestic production at present, demagnetization easily.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, a kind of method for producing oxygen body magnetic pole of electric motor is provided.
Technical scheme of the present invention is: a kind of method for producing oxygen body magnetic pole of electric motor, and with SrO8.8%, Fe
2O
386%, AL
2O
32.0%, SrCO
30.4%, Cr
2O
30.5%, CaCO
31.0%, SiO
20.5%, H
3BO
30.8% stirs into the material powder; To expect that powder drops into ball mill and carries out extra-fine grinding, adding diameter during grinding in ball mill is steel ball, water and the grinding aid of 6-8mm, steel ball: material powder: water: grinding aid=7: 1: 1.5: 0.003, ball milling is squeezed into Multi-layer material-storing cabinet with compressed gas with slip after detecting after 18 hours and reaching granularity and be 0.8um again; Precipitate after 50 hours, extract superfluous water above the slurry out, stirred 30 minutes, making the slurry moisture content is 35%; Slurry is injected mould, be pressed into the magnetic pole blank, magnetize and adopt 5-7 Wan An circle D.C. magnetic field, 9-10 Wan An circle pulsed magnetic field in addition superposes; Blank was put into 40 ℃ of constant temperature ovens placements after 48 hours, and making the green compact moisture content is 2-4%; Green compact are placed on sintering on the pushed bat kiln, and sintering temperature is 1150 ℃-1200 ℃, and temperature retention time is 90-120 minute, and push pedal speed is 15 minutes/plate, adopts the chilling method of quenching during cooling before 800 ℃, makes product obtain high Hcj value as far as possible; Detect; With the diamond forming grinding wheel magnetic pole is carried out grinding.
The present invention has the following advantages: the anti-high and low-temp function admirable, the demagnetization rate is low, improves the electric motor starting performance.
Embodiment
Embodiment: a kind of method for producing oxygen body magnetic pole of electric motor, with SrO 8.8%, Fe
2O
386%, AL
2O
32.0%, SrCO
30.4%, Cr
2O
30.5%, CaCO
31.0%, SiO
20.5%, H
3BO
30.8% stirs into the material powder; Drop into ball mill and carry out extra-fine grinding, adding diameter during grinding is that 3.5 tons of 6-8mm steel balls, ball material-water ratio rate are 7: 1: 1.5, adds 1 kilogram of grinding aid, and 18 hours granularities of ball milling are 0.8um, with compressed gas slip are squeezed into Multi-layer material-storing cabinet; Precipitate 50 hours, extract superfluous water out, stir half an hour; 100 liters of slurries are injected mould, magnetize and adopt 6 Wan An circle D.C. magnetic fields, superimposed pulse magnetic field 9 Wan An circles are pressed into 6000 of magnetic pole blanks; Blank was put into 40 ℃ of constant temperature ovens placements after 48 hours, and making the green compact moisture content is 4%; Green compact are placed on sintering on the pushed bat kiln, 1150 ℃-1200 ℃ of sintering temperatures, temperature retention time 120 minutes, 15 minutes/plate of push pedal speed detects; With the diamond forming grinding wheel magnetic pole is carried out grinding.
Claims (1)
1. method for producing oxygen body magnetic pole of electric motor is characterized in that: with SrO8.8%, and Fe
2O
386%, AL
2O
32.0%, SrCO
30.4%, Cr
2O
30.5%, CaCO
31.0%, SiO
20.5%, H
3BO
30.8% stirs into the material powder; Drop into ball mill and carry out extra-fine grinding, adding diameter during grinding is that 3.5 tons of 6-8mm steel balls, ball material-water ratio rate are 7: 1: 1.5, adds 1 kilogram of grinding aid, and 18 hours granularities of ball milling are 0.8um, with compressed gas slip are squeezed into Multi-layer material-storing cabinet; Precipitate 50 hours, extract superfluous water out, stir half an hour; 100 liters of slurries are injected mould, magnetize and adopt 6 Wan An circle D.C. magnetic fields, superimposed pulse magnetic field 9 Wan An circles are pressed into 6000 of magnetic pole blanks; Blank was put into 40 ℃ of constant temperature ovens placements after 48 hours, and making the green compact moisture content is 4%; Green compact are placed on sintering on the pushed bat kiln, 1150 ℃-1200 ℃ of sintering temperatures, temperature retention time 120 minutes, 15 minutes/plate of push pedal speed detects; With the diamond forming grinding wheel magnetic pole is carried out grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100159691A CN101154855A (en) | 2006-09-25 | 2006-09-25 | Method for producing oxygen body magnetic pole of electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100159691A CN101154855A (en) | 2006-09-25 | 2006-09-25 | Method for producing oxygen body magnetic pole of electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101154855A true CN101154855A (en) | 2008-04-02 |
Family
ID=39256360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100159691A Withdrawn CN101154855A (en) | 2006-09-25 | 2006-09-25 | Method for producing oxygen body magnetic pole of electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101154855A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021143210A1 (en) * | 2020-01-15 | 2021-07-22 | 湖南航天磁电有限责任公司 | Permanent ferrite magnet forming boost injection apparatus and magnet manufacturing method |
-
2006
- 2006-09-25 CN CNA2006100159691A patent/CN101154855A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021143210A1 (en) * | 2020-01-15 | 2021-07-22 | 湖南航天磁电有限责任公司 | Permanent ferrite magnet forming boost injection apparatus and magnet manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |