CN111525750A - Low-voltage cast aluminum core heating process of three-phase asynchronous high-voltage motor cast aluminum rotor - Google Patents
Low-voltage cast aluminum core heating process of three-phase asynchronous high-voltage motor cast aluminum rotor Download PDFInfo
- Publication number
- CN111525750A CN111525750A CN202010432583.0A CN202010432583A CN111525750A CN 111525750 A CN111525750 A CN 111525750A CN 202010432583 A CN202010432583 A CN 202010432583A CN 111525750 A CN111525750 A CN 111525750A
- Authority
- CN
- China
- Prior art keywords
- heating
- hour
- cast aluminum
- heating furnace
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0012—Manufacturing cage rotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0054—Casting in, on, or around objects which form part of the product rotors, stators for electrical motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Induction Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to a low-pressure cast aluminum core heating process of a cast aluminum rotor of a three-phase asynchronous high-voltage motor, belongs to the technical field of cast aluminum rotor casting processes, and solves the technical problem that the heating temperature of the low-pressure cast aluminum core of the cast aluminum rotor of the three-phase asynchronous high-voltage motor cannot be accurately controlled. The technical scheme of the invention is as follows: the low-voltage cast aluminum core heating process of the three-phase asynchronous high-voltage motor cast aluminum rotor sequentially comprises the following heating processes: heating the heating furnace to 80 ℃, and heating for 0.5 hour at the heating speed of 220-260 ℃/h; then, continuously heating for 1.5 hours at the speed of 132-136 ℃/h, and preserving heat for 0.5 hour; continuously heating for 0.5 hour at the speed of 180-220 ℃/h, and keeping the temperature for 0.5 hour; continuing to heat for 0.5 hour at the temperature rising speed, and keeping the temperature for 1 hour; heating for 1 hour at the heating rate of 73-77 ℃/h, and keeping the temperature for 2 hours. The iron core heating process adapts to the iron length of the iron core of the high-voltage motor and considers the slot shape of the slender type hilt, thereby ensuring the quality of the cast-aluminum rotor.
Description
Technical Field
The invention belongs to the technical field of cast aluminum rotor casting processes, and particularly relates to a low-voltage cast aluminum iron core heating process of a cast aluminum rotor of a three-phase asynchronous high-voltage motor.
Background
The low-pressure aluminum casting process for the cast aluminum rotor comprises the following steps of: the method comprises the steps of melting aluminum ingots, preheating a mold, heating an iron core, purifying molten aluminum and pouring at low pressure, wherein the heating of the iron core has great influence on the quality of the cast aluminum rotor.
The three-phase asynchronous high-voltage motor, particularly a large-center high-voltage motor H630 or above, has large power and long iron core length. According to the length of the iron core of the high-voltage motor rotor and the groove shape of the rotor punching sheet, the aluminum casting of the long and thin type tool holder groove is taken into consideration, and the aluminum casting is normally ensured after the heating of the same heating furnace, so that the heating temperature of the iron core needs to be further adjusted.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a low-pressure cast aluminum core heating process of a cast aluminum rotor of a three-phase asynchronous high-voltage motor, better adapts to the length of an iron core iron and the groove shape of a rotor punching sheet, and solves the technical problem that the heating temperature of the low-pressure cast aluminum core of the cast aluminum rotor of the three-phase asynchronous high-voltage motor cannot be accurately controlled.
In order to solve the problems, the technical scheme of the invention is as follows: the low-voltage cast aluminum core heating process of the three-phase asynchronous high-voltage motor cast aluminum rotor sequentially comprises the following heating processes:
1) the first stage is as follows: heating the heating furnace to 80 ℃, then putting the cast-aluminum rotor core into the heating furnace, and heating for 0.5 hour at the heating speed of 220-260 ℃/h until the heating furnace is heated to 190-210 ℃;
2) and a second stage: the heating furnace is continuously heated for 1.5 hours at the heating speed of 132-136 ℃/h until the heating furnace is heated to 388-414 ℃, and the temperature is kept for 0.5 hour;
3) and a third stage: the heating furnace is continuously heated for 0.5 hour at the heating speed of 180-220 ℃/h until the temperature of the heating furnace is raised to 478-524 ℃, and the temperature is kept for 0.5 hour;
4) a fourth stage: continuously heating the heating furnace for 0.5 hour at the temperature rising speed of the third stage until the temperature of the heating furnace rises to 568-634 ℃, and preserving the heat for 1 hour;
5) the fifth stage: and heating the heating furnace for 1 hour at the heating speed of 73-77 ℃/h until the heating furnace is heated to 641-711 ℃, and preserving heat for 2 hours to finish the low-pressure cast aluminum iron core heating process of the cast aluminum rotor of the three-phase asynchronous high-voltage motor.
The invention makes specific limitation on the heating parameters of the iron core in the low-pressure cast aluminum of the cast aluminum rotor of the three-phase asynchronous high-voltage motor, adapts to the iron length of the iron core of the high-voltage motor and considers the slot shape of the slender cutter handle, ensures normal cast aluminum after being heated in the same heating furnace and ensures the quality of the cast aluminum rotor.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1
The low-voltage cast aluminum core heating process of the cast aluminum rotor of the three-phase asynchronous high-voltage motor in the embodiment sequentially comprises the following heating processes:
1) the first stage is as follows: heating the heating furnace to 80 ℃, then putting the cast-aluminum rotor core into the heating furnace, and heating for 0.5 hour at the heating speed of 220 ℃/h until the heating furnace is heated to 190 ℃;
2) and a second stage: the heating furnace continues to heat for 1.5 hours at the heating rate of 132 ℃/h until the heating furnace is heated to 388 ℃ and the temperature is kept for 0.5 hour;
3) and a third stage: the heating furnace continues to heat for 0.5 hour at the heating rate of 180 ℃/h until the heating furnace is heated to 478 ℃ and the temperature is kept for 0.5 hour;
4) a fourth stage: the heating furnace continues to heat for 0.5 hour at the temperature rising speed of the third stage until the temperature of the heating furnace rises to 568 ℃, and the temperature is kept for 1 hour;
5) the fifth stage: and heating the heating furnace for 1 hour at the heating rate of 73 ℃/h until the heating furnace is heated to 641 ℃, and preserving heat for 2 hours to finish the low-pressure cast aluminum iron core heating process of the three-phase asynchronous high-voltage motor cast aluminum rotor.
Example 2
The low-voltage cast aluminum core heating process of the cast aluminum rotor of the three-phase asynchronous high-voltage motor in the embodiment sequentially comprises the following heating processes:
1) the first stage is as follows: heating the heating furnace to 80 ℃, then putting the cast aluminum rotor iron core into the heating furnace, and heating for 0.5 hour at the heating speed of 230 ℃/h until the heating furnace is heated to 195 ℃;
2) and a second stage: the heating furnace is continuously heated for 1.5 hours at the heating rate of 133 ℃/h until the heating furnace is heated to 395 ℃, and the temperature is maintained for 0.5 hour;
3) and a third stage: the heating furnace continues to heat for 0.5 hour at the heating rate of 190 ℃/h until the heating furnace is heated to 490 ℃, and the temperature is kept for 0.5 hour;
4) a fourth stage: the heating furnace continues to heat for 0.5 hour at the temperature rising speed of the third stage until the temperature of the heating furnace rises to 585 ℃, and the temperature is kept for 1 hour;
5) the fifth stage: and heating the heating furnace for 1 hour at the heating rate of 74 ℃/h until the heating furnace is heated to 659 ℃, and preserving heat for 2 hours to finish the low-pressure cast aluminum iron core heating process of the three-phase asynchronous high-voltage motor cast aluminum rotor.
Example 3
The low-voltage cast aluminum core heating process of the cast aluminum rotor of the three-phase asynchronous high-voltage motor in the embodiment sequentially comprises the following heating processes:
1) the first stage is as follows: heating the heating furnace to 80 ℃, then putting the cast-aluminum rotor core into the heating furnace, and heating for 0.5 hour at the heating speed of 240 ℃/h until the heating furnace is heated to 200 ℃;
2) and a second stage: the heating furnace continues to heat for 1.5 hours at the heating rate of 134 ℃/h until the heating furnace is heated to 401 ℃, and the temperature is kept for 0.5 hour;
3) and a third stage: the heating furnace is continuously heated for 0.5 hour at the heating rate of 200 ℃/h until the heating furnace is heated to 501 ℃, and the temperature is kept for 0.5 hour;
4) a fourth stage: the heating furnace continues to heat for 0.5 hour at the temperature rising speed of the third stage until the temperature of the heating furnace rises to 601 ℃, and the temperature is kept for 1 hour;
5) the fifth stage: and heating the heating furnace for 1 hour at the heating rate of 75 ℃/h until the heating furnace is heated to 676 ℃, and preserving heat for 2 hours to finish the low-pressure cast aluminum iron core heating process of the three-phase asynchronous high-voltage motor cast aluminum rotor.
Example 4
The low-voltage cast aluminum core heating process of the cast aluminum rotor of the three-phase asynchronous high-voltage motor in the embodiment sequentially comprises the following heating processes:
1) the first stage is as follows: heating the heating furnace to 80 ℃, then putting the cast-aluminum rotor core into the heating furnace, and heating for 0.5 hour at the heating speed of 250 ℃/h until the heating furnace is heated to 205 ℃;
2) and a second stage: the heating furnace continues to heat for 1.5 hours at the heating rate of 135 ℃/h until the heating furnace is heated to 408 ℃, and the temperature is kept for 0.5 hour;
3) and a third stage: the heating furnace is continuously heated for 0.5 hour at the heating rate of 210 ℃/h until the heating furnace is heated to 513 ℃, and the temperature is kept for 0.5 hour;
4) a fourth stage: the heating furnace continues to heat for 0.5 hour at the temperature rising speed of the third stage until the temperature of the heating furnace rises to 618 ℃, and the temperature is kept for 1 hour;
5) the fifth stage: and heating the heating furnace for 1 hour at the heating rate of 76 ℃/h until the heating furnace is heated to 694 ℃, and preserving heat for 2 hours to finish the low-pressure cast aluminum iron core heating process of the three-phase asynchronous high-voltage motor cast aluminum rotor.
Example 5
The low-voltage cast aluminum core heating process of the cast aluminum rotor of the three-phase asynchronous high-voltage motor in the embodiment sequentially comprises the following heating processes:
1) the first stage is as follows: heating the heating furnace to 80 ℃, then putting the cast-aluminum rotor core into the heating furnace, and heating for 0.5 hour at the heating speed of 260 ℃/h until the heating furnace is heated to 210 ℃;
2) and a second stage: the heating furnace is continuously heated for 1.5 hours at the heating rate of 136 ℃/h until the heating furnace is heated to 414 ℃, and the temperature is kept for 0.5 hour;
3) and a third stage: the heating furnace is continuously heated for 0.5 hour at the heating speed of 220 ℃/h until the heating furnace is heated to 524 ℃, and the temperature is kept for 0.5 hour;
4) a fourth stage: the heating furnace continues to heat for 0.5 hour at the temperature rising speed of the third stage until the temperature of the heating furnace rises to 634 ℃, and the temperature is kept for 1 hour;
5) the fifth stage: and heating the heating furnace for 1 hour at the heating rate of 77 ℃/h until the heating furnace is heated to 711 ℃, and preserving heat for 2 hours to finish the low-pressure cast aluminum iron core heating process of the cast aluminum rotor of the three-phase asynchronous high-voltage motor.
Claims (1)
1. The low-pressure cast aluminum core heating process of the three-phase asynchronous high-voltage motor cast aluminum rotor is characterized in that: the method sequentially comprises the following heating processes:
1) the first stage is as follows: heating the heating furnace to 80 ℃, then putting the cast-aluminum rotor core into the heating furnace, and heating for 0.5 hour at the heating speed of 220-260 ℃/h until the heating furnace is heated to 190-210 ℃;
2) and a second stage: the heating furnace is continuously heated for 1.5 hours at the heating speed of 132-136 ℃/h until the heating furnace is heated to 388-414 ℃, and the temperature is kept for 0.5 hour;
3) and a third stage: the heating furnace is continuously heated for 0.5 hour at the heating speed of 180-220 ℃/h until the temperature of the heating furnace is raised to 478-524 ℃, and the temperature is kept for 0.5 hour;
4) a fourth stage: continuously heating the heating furnace for 0.5 hour at the temperature rising speed of the third stage until the temperature of the heating furnace rises to 568-634 ℃, and preserving the heat for 1 hour;
5) the fifth stage: and heating the heating furnace for 1 hour at the heating speed of 73-77 ℃/h until the heating furnace is heated to 641-711 ℃, and preserving heat for 2 hours to finish the low-pressure cast aluminum iron core heating process of the cast aluminum rotor of the three-phase asynchronous high-voltage motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010432583.0A CN111525750B (en) | 2020-05-20 | 2020-05-20 | Low-voltage cast aluminum core heating process of three-phase asynchronous high-voltage motor cast aluminum rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010432583.0A CN111525750B (en) | 2020-05-20 | 2020-05-20 | Low-voltage cast aluminum core heating process of three-phase asynchronous high-voltage motor cast aluminum rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111525750A true CN111525750A (en) | 2020-08-11 |
| CN111525750B CN111525750B (en) | 2021-07-23 |
Family
ID=71909369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010432583.0A Active CN111525750B (en) | 2020-05-20 | 2020-05-20 | Low-voltage cast aluminum core heating process of three-phase asynchronous high-voltage motor cast aluminum rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111525750B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117574688A (en) * | 2024-01-15 | 2024-02-20 | 山西电机制造有限公司 | Estimation method for heating temperature of low-pressure casting cast aluminum rotor core |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6710498B1 (en) * | 1999-11-10 | 2004-03-23 | Korea Advanced Institute Of Science And Technology | Polymer composite squirrel cage rotor with high magnetic permeability filler for induction motor and method of making it |
| CN109450187A (en) * | 2018-11-30 | 2019-03-08 | 湖南上临新材料科技有限公司 | A kind of preparation process of the high compound solid stator of silicon steel-constantan of novel metal base |
| CN109518082A (en) * | 2018-11-30 | 2019-03-26 | 湖南上临新材料科技有限公司 | A kind of new structure solid rotor-stator preparation process applied to AC induction motor |
| CN109986056A (en) * | 2018-01-11 | 2019-07-09 | 山西电机制造有限公司 | A kind of cast-aluminum rotor low-voltage cast aluminum process |
-
2020
- 2020-05-20 CN CN202010432583.0A patent/CN111525750B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6710498B1 (en) * | 1999-11-10 | 2004-03-23 | Korea Advanced Institute Of Science And Technology | Polymer composite squirrel cage rotor with high magnetic permeability filler for induction motor and method of making it |
| CN109986056A (en) * | 2018-01-11 | 2019-07-09 | 山西电机制造有限公司 | A kind of cast-aluminum rotor low-voltage cast aluminum process |
| CN109450187A (en) * | 2018-11-30 | 2019-03-08 | 湖南上临新材料科技有限公司 | A kind of preparation process of the high compound solid stator of silicon steel-constantan of novel metal base |
| CN109518082A (en) * | 2018-11-30 | 2019-03-26 | 湖南上临新材料科技有限公司 | A kind of new structure solid rotor-stator preparation process applied to AC induction motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117574688A (en) * | 2024-01-15 | 2024-02-20 | 山西电机制造有限公司 | Estimation method for heating temperature of low-pressure casting cast aluminum rotor core |
| CN117574688B (en) * | 2024-01-15 | 2024-03-15 | 山西电机制造有限公司 | Estimation method for heating temperature of low-pressure casting cast aluminum rotor core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111525750B (en) | 2021-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101823197B (en) | Method for molding large ring piece by casting blank ring rolling | |
| CN104057260B (en) | A kind of processing method of rolled copper foil mother metal | |
| CN107058874B (en) | A kind of method that non-oriented silicon steel with high magnetic induction thin slab product is prepared based on thin strap continuous casting | |
| CN106623704A (en) | Manufacturing method of low stress 2A70 aluminum alloy ring piece | |
| CN106583611A (en) | Manufacturing method of low-stress TC4 titanium alloy ring piece | |
| CN111525750B (en) | Low-voltage cast aluminum core heating process of three-phase asynchronous high-voltage motor cast aluminum rotor | |
| CN110564975A (en) | Vacuum consumable smelting process of master alloy cast ingot for powder metallurgy | |
| CN113999982A (en) | Smelting process of GH4169 alloy cast ingot | |
| CN104818443A (en) | Short-process efficient production method of copper-sliver alloy wire | |
| CN108486340B (en) | High-carbon high-chromium stainless steel and processing method thereof | |
| CN114045436A (en) | GH2909 alloy ingot and preparation method thereof | |
| CN109986056B (en) | Low-pressure aluminum casting process method for cast aluminum rotor | |
| CN111496225B (en) | Low-pressure cast aluminum pressurizing process for cast aluminum rotor of three-phase asynchronous high-voltage motor | |
| CN108465787B (en) | Manufacturing process of chromium bronze conducting bar of asynchronous traction motor rotor | |
| CN101110285A (en) | High-conductivity electronic brass plate manufacturing technique | |
| CN109338223B (en) | Process method for improving surface quality and performance of silicon steel product | |
| CN112034905A (en) | Automatic temperature rise control method for medium-frequency induction smelting of neodymium iron boron melt | |
| CN111618533A (en) | Preparation method of long-life and low-cost soldering bit | |
| CN109434378A (en) | A kind of copper strips production technology | |
| CN110373609B (en) | Casting method of tool part blank for producing shearing thin-wall steel plate | |
| CN114622281B (en) | Low-melting-point metal pollution control method in process of preparing monocrystal blade by liquid metal cooling directional solidification method | |
| CN117505798A (en) | Production process for conveniently casting copper squirrel cage rotor | |
| CN109365525B (en) | Method for controlling quality of cold-rolled silicon steel casting blank | |
| CN104451083A (en) | Method for roll-casting plate slab of alloy die | |
| CN116574875A (en) | Preparation method of fine-grain brass strip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |