CN101183818B - Production technology of electric machine rotor - Google Patents
Production technology of electric machine rotor Download PDFInfo
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- CN101183818B CN101183818B CN2007101440032A CN200710144003A CN101183818B CN 101183818 B CN101183818 B CN 101183818B CN 2007101440032 A CN2007101440032 A CN 2007101440032A CN 200710144003 A CN200710144003 A CN 200710144003A CN 101183818 B CN101183818 B CN 101183818B
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Abstract
The invention provides a manufacturing technique for motor rotors, which is characterized in that the metal materials comprise aluminum-manganese alloy, ferrochromium alloy and pure aluminum. The craft comprises the following steps: firstly, the pure aluminum is melted, the ferrochromium alloy is hammered into pieces, and the ferrochromium alloy and the aluminum-manganese alloy are preheated; then the ferrochromium alloy and the aluminum-manganese alloy are poured into the aluminum liquid; the temperature of the aluminum is warmed up to 1000 DEG C, the heat is preserved, and the aluminum liquid is poured into a flute case for backup; when the rotor is cast, the aluminum alloy is melted and the heat is preserved at the 700 DEG C; the cerium-aluminum alloy is added as a metamorphosis for the purpose of modification process, preventing the aluminum alloy with high resistance from hot cracking; the resistivity required by the allocation and the acquirement of the pure alloy is added, which is cleaned and cast; the motor rotor is cast by the pressure. The invention has the advantages that the resistivity is increased by adding the manganese, chromium and iron alloy with a certain ratio to the pure aluminum used in casting the aluminum rotor; the modification process is done with the rare-earth (like cerium); therefore, the resistivity of the aluminum alloy can reach as high as 0.083p Omega m<2>/m under 20 DEG C (environment temperature); in addition, the crack can be avoided; the material is easy to obtain, and the preparation steps are easy.
Description
Technical field
The casting system of the invention belongs to field more specifically relates to a kind of production technology of rotor.
Background technology
Motor is in actual motion; There are some occasions to require Fraquent start; Bringing onto load starts, and this just requires motor starting to change apart from big, and the starting current requirement is little; Fraquent start, starting current are excessive to be burnt motor or electrical network is impacted excessive to avoid, and just requires to reach 0.071～0.083p Ω m like the rotor bar resistivity of the high slip electric motor of YH series, YZD series vibrating motor
2/ m improves the motor starting torque thereby reach, and reduces the purpose of starting current simultaneously.For satisfying the requirement of YH serial motors and YZD serial motors casting aluminum rotor, must prepare the usefulness of a kind of aluminium alloy of high resistivity as rotor bar.Now the motor rotor of usefulness is generally cast-aluminum rotor, and general aluminium alloy exists that resistivity is low, hot cracking tendency is serious, and resistivity is difficult to reach 0.08pQm
2More than/m the resistivity.
Summary of the invention
The object of the invention is exactly the production technology that a kind of rotor will be provided, and this production technology raw material is easy to get, and production method is simple, and the rotor resistance rate of preparation is high, can reach the requirement of high resistivity rotor, and hot tearing does not take place.
The production technology of rotor of the present invention is characterized in that: the mass percent of each component comprises in the said raw metal prescription: alumal 20%, ferrochrome 2%, fine aluminium 78%;
The preparation process of said rotor is:
1) earlier fine aluminium being put into graphite crucible melts;
2) the ferrochrome hammering is broken to the bulk that particle diameter is 0.5～1.5cm, weighs up subsequent use by proportioning raw materials;
3) alumal is subsequent use by weighing up by proportioning raw materials;
4) ferrochrome for preparing and alumal are preheating to 60～70 ℃, remove moisture;
5) when the aluminium temperature reaches 750 ℃, ferrochrome and alumal are joined in the aluminium liquid, slightly stir;
6) with aluminium temperature rise to 1000 ℃, be incubated 40 minutes, it is subsequent use to pour the aluminium alloy for preparing into channel mould;
7) to cast when producing cast-aluminum rotor, with the above-mentioned high resistant aluminum alloy melting for preparing, in the time of 700 ℃, insulation; In high resistant aluminum alloy melting liquid mass percent is that 1% ratio adds Ce-Al alloy as the alterant processing of go bad, and processing 1min prevents the hot tearing of high resistant aluminium alloy;
8) on-the-spot test resistivity, and the pole rotor resistivity in requiring according to different technologies adds fine aluminium and allocates in the liquation of step 7); To obtain desired resistivity;
9) Qinghua:
A) temperature of aluminum liquid is at 680 ℃～710 ℃, and adding quality is the ammonium chloride that dries of aluminium liquid 0.1～0.2%;
B) be positioned over ammonium chloride and sink in the cover, sink to aluminium liquid bottom, stir, have bubble to rise;
C) when loseing bubble when rising, take out and sink to cover, leave standstill 5 minutes after, scum silica frost is removed;
10) casting: go out rotor with compression casting.
Remarkable advantage of the present invention is: the present invention is through adding manganese, the ferrochrome of certain proportioning in the fine aluminium of using at cast-aluminum rotor; Improve its resistivity; And with rare earth (as: cerium) processing of going bad, the resistivity that reaches (ambient temperature) aluminium alloy in the time of 20 ℃ can be up to 0.083pQm
2/ m, and hot tearing does not take place, and raw material is easy to get, and preparation process is simple.
Embodiment
The mass percent of each component is in the raw metal prescription: alumal 20%, ferrochrome 2%, fine aluminium 78%; The preparation process of said rotor is:
1) earlier fine aluminium being put into graphite crucible melts;
2) the ferrochrome hammering is broken to the bulk that particle diameter is 0.5～1.5cm, weighs up subsequent use by proportioning raw materials;
3) alumal is subsequent use by weighing up by proportioning raw materials;
4) ferrochrome for preparing and alumal are preheating to 60～70 ℃, remove moisture;
5) when the aluminium temperature reaches 750 ℃, ferrochrome and alumal are joined in the aluminium liquid, slightly stir;
6) with aluminium temperature rise to 1000 ℃, be incubated 40 minutes, it is subsequent use to pour the aluminium alloy for preparing into channel mould;
7) to cast when producing cast-aluminum rotor, with the above-mentioned high resistant aluminum alloy melting for preparing, in the time of 700 ℃, insulation; In high resistant aluminum alloy melting liquid mass percent is that 1% ratio adds Ce-Al alloy as the alterant processing of go bad, and processing 1min prevents the hot tearing of high resistant aluminium alloy;
8) on-the-spot test resistivity, and the pole rotor resistivity in requiring according to different technologies adds fine aluminium and allocates in the liquation of step 7); To obtain desired resistivity;
9) Qinghua:
A) temperature of aluminum liquid is at 680 ℃～710 ℃, and adding quality is the ammonium chloride that dries of aluminium liquid 0.1～0.2%;
B) be positioned over ammonium chloride and sink in the cover, sink to aluminium liquid bottom, stir, have bubble to rise;
C) when loseing bubble when rising, take out and sink to cover, leave standstill 5 minutes after, scum silica frost is removed;
10) casting: go out rotor with compression casting.
Contain Mn10% in the said alumal.
Said ferrochrome contains Cr60%.
Contain cerium 10% in the said rare earth Ce-Al alloy.
Said preparation process 4) preheating method in is oven dry.
Said compression casting is adopted as existing common technology, adopts the die-casting machine for motor rotor casting; Said processing step is following:
(1) inspection die casting machine pressure is not less than 8.5Mpa, the insurance of inspection main frame, and the die casting machine mains switch that closes then starts the machine, after hydraulic pressure is normal, the crawl matched moulds, die sinking, buttons such as blank, injection, injection backhaul check whether these actions are sensitive reliable.
(2) the matched moulds time is 7 seconds, and cooperating the time meter electrical equipment of cutoff device is 5 seconds, and both second differences are more than 2 seconds.
(3) injection power is looked the needs of product and is decided, and reference value is 9.5～11Mpa, the big person's capping of size, otherwise the limit of taking off.
(4) injection speed is looked the needs of product and is decided, and generally unsuitable excessive, size should suit, and reference value is 1m/s.
(5) the aluminium coolant-temperature gage should be 680～700 ℃, and color is a kermesinus, liquid level dimpling, and the sticking aluminium of iron staff, and stove table reference temperature at this moment should be 800 ℃.
(6) aluminium water must be whenever at a distance from 2 hours Qinghua once, and Qinghua agent is a villaumite.
(7) check whether rotor core and the compression mod folded coincide; Rotor core laminating installs mould according to installation diagram, checks whether upper and lower fan blade mould and middle mould have narrow meeting, and no narrow meeting just can be carried out die casting.
(8) the rotor core of folding, install mould according to installation diagram; Push away mould in injection cup central authorities, location-plate in the push pedal of adjustment blank and location nail.
(9) press crawl, matched moulds button again, observe press and whether can overwhelm mould; Whether side protection push pedal is carried out unobstructed; Adjustment press protective plate height is advisable with the firm mould of putting into.
(10) put into the injection cup to the asbestos cover, contain aluminium water with the aluminium spoon and pour in the asbestos cover, aluminium water is 2～5mm from paper cover limit, fills the paper cover basically.
(11) dial button in interlock, reset position, press matched moulds.The die casting machine follow procedure carries out die casting.
(12) after the machine die sinking, press the blank button, pull out mould and split out cast-aluminum rotor; Press crawl, injection button, after ejecting and taking out cast gate, by the injection backhaul.
(13) every pressure is 5, just coating once, the vanning of the rotor that presses, coating is graphite oil.
Claims (6)
1. the production technology of a rotor, it is characterized in that: the mass percent of each component comprises in the raw metal prescription: alumal 20%, ferrochrome 2%, fine aluminium 78%; The preparation process of said rotor is:
1) earlier fine aluminium is put into the graphite crucible fusing and promptly get aluminium liquid;
2) the ferrochrome hammering is broken to the bulk that particle diameter is 0.5～1.5cm, weighs up subsequent use by proportioning raw materials;
3) alumal weighs up subsequent use by proportioning raw materials;
4) ferrochrome for preparing and alumal are preheating to 60～70 ℃, remove moisture;
5) when the aluminium temperature reaches 750 ℃, ferrochrome and alumal are joined in the described aluminium liquid of step 1), slightly stir;
6) with aluminium temperature rise to 1000 ℃, be incubated 40 minutes, it is subsequent use to pour the aluminium alloy for preparing into channel mould;
7) to cast when producing cast-aluminum rotor, with the described aluminum alloy melting for preparing of step 6), in the time of 700 ℃, insulation; In aluminum alloy melting liquid mass percent is that 1% ratio adds Ce-Al alloy as the alterant processing of going bad, and handles 1 minute, prevents the aluminium alloy hot tearing;
8) on-the-spot test resistivity, and the rotor resistivity in requiring according to different technologies adds fine aluminium and allocates in the described liquation after rotten of step 7); To obtain desired resistivity;
9) Qinghua:
A) temperature of aluminum liquid after the described fine aluminium allotment of step 8) is at 680 ℃～710 ℃, and adding quality is the ammonium chloride that dries of aluminium liquid 0.1～0.2%;
B) be positioned over ammonium chloride and sink in the cover, sink to the aluminium liquid bottom after the said heating of step a), stir, have bubble to rise;
C) when loseing bubble when rising, take out and sink to cover, leave standstill 5 minutes after, scum silica frost is removed;
10) casting: go out rotor with compression casting.
2. the production technology of rotor according to claim 1 is characterized in that: contain Mn10% in the said alumal.
3. the production technology of rotor according to claim 1, it is characterized in that: said ferrochrome contains Cr60%.
4. the production technology of rotor according to claim 1 is characterized in that: contain cerium 10% in the said Ce-Al alloy.
5. the production technology of rotor according to claim 1 is characterized in that: the preheating method said preparation process 4) is oven dry.
6. the production technology of rotor according to claim 1 is characterized in that: the casting of said compression casting employing die-casting machine for motor rotor; Casting technique is: die casting machine pressure is not less than 8.5Mpa; The matched moulds time is 7 seconds, and cooperating the time meter electrical equipment of cutoff device is 5 seconds, and both second differences are more than 2 seconds; Injection power is 9.5～11Mpa; Injection speed is 1 meter per second; Aluminium coolant-temperature gage behind the described Qinghua of step 9) is 680～700 ℃, and color is a kermesinus, liquid level dimpling, and the sticking aluminium of iron staff, and stove table temperature at this moment is 800 ℃; Aluminium water behind the described Qinghua of step 9) is every at a distance from 2 hours Qinghua once, and Qinghua agent is a villaumite; The dress mould; Push away mould in injection cup central authorities, location-plate in the push pedal of adjustment blank and location nail; Put mould into; Put into the injection cup to the asbestos cover, pour in the asbestos cover with the aluminium water behind the described Qinghua of aluminium spoon Sheng step 9), the aluminium water behind the described Qinghua of step 9) is 2～5mm from asbestos cover limit, fills the asbestos cover basically; The die casting machine follow procedure carries out die casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101440032A CN101183818B (en) | 2007-12-14 | 2007-12-14 | Production technology of electric machine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101440032A CN101183818B (en) | 2007-12-14 | 2007-12-14 | Production technology of electric machine rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101183818A CN101183818A (en) | 2008-05-21 |
| CN101183818B true CN101183818B (en) | 2012-01-25 |
Family
ID=39448948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101440032A Expired - Fee Related CN101183818B (en) | 2007-12-14 | 2007-12-14 | Production technology of electric machine rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101183818B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142753A (en) * | 2011-04-28 | 2011-08-03 | 福建万达电机有限公司 | Three-phase squirrel-cage AC (alternating current) asynchronous brake motor with high start moment |
| CN102357651A (en) * | 2011-09-01 | 2012-02-22 | 上海上电蒂马克电机有限公司 | Die-casting aluminum mould of long rotor chute iron core vacuum and manufacturing method thereof |
| CN102296212B (en) * | 2011-09-13 | 2013-01-23 | 成都银河动力有限公司 | P-Fe alloy type modifier and method for applying P-Fe alloy type modifier in aluminum-silicon alloy melting |
| CN103441622A (en) * | 2013-09-05 | 2013-12-11 | 江苏三江迪生电机有限公司 | Motor rotor pressure casting technique |
| CN104232959A (en) * | 2014-09-19 | 2014-12-24 | 无锡天宝电机有限公司 | Aluminum alloy for motor rotor and casting method thereof |
| CN105458210B (en) * | 2016-01-19 | 2017-06-16 | 东南大学 | A kind of die casting of motor cone rotor and press-fit mechanized production system |
| CN105903921A (en) * | 2016-06-28 | 2016-08-31 | 无锡新大力电机有限公司 | Pressure casting process of motor stator |
| CN105903920A (en) * | 2016-06-28 | 2016-08-31 | 无锡新大力电机有限公司 | Pressure casting process of motor rotor |
| CN108667236A (en) * | 2018-05-23 | 2018-10-16 | 湖州荣辉电机有限公司 | A kind of rotor production assembly technology |
-
2007
- 2007-12-14 CN CN2007101440032A patent/CN101183818B/en not_active Expired - Fee Related
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|---|---|
| CN101183818A (en) | 2008-05-21 |
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