CN117385154A - Motor iron core heat treatment method - Google Patents
Motor iron core heat treatment method Download PDFInfo
- Publication number
- CN117385154A CN117385154A CN202311497136.3A CN202311497136A CN117385154A CN 117385154 A CN117385154 A CN 117385154A CN 202311497136 A CN202311497136 A CN 202311497136A CN 117385154 A CN117385154 A CN 117385154A
- Authority
- CN
- China
- Prior art keywords
- iron core
- furnace temperature
- heat treatment
- minutes
- heat
- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 238000010438 heat treatment Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000000137 annealing Methods 0.000 claims abstract description 22
- 238000011282 treatment Methods 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 238000004321 preservation Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention belongs to the technical field of motor core manufacturing and discloses a motor core heat treatment method. The heat treatment method of the motor iron core comprises the following steps: s1, oil removal stage: placing the iron core into a heat treatment furnace, starting the heat treatment furnace, raising the furnace temperature to 400 ℃, preserving the heat for 30 minutes, and removing oil stains on the iron core; s2, heating: raising the furnace temperature to 660 ℃; s3, a rapid annealing stage: raising the furnace temperature to 690 ℃ and preserving heat for 30 minutes, and then lowering the furnace temperature to 600 ℃; s4, a secondary annealing stage: raising the furnace temperature to 690 ℃ and preserving heat for 30 minutes, and then lowering the furnace temperature to 660 ℃ and preserving heat for 10 minutes; s5, bluing: reducing the furnace temperature and preserving heat for 40 minutes, and carrying out bluing treatment on the iron core; s6, a cooling stage: the furnace temperature is reduced to room temperature. The motor iron core heat treatment method shortens the time of the whole heating and heat preservation stage while ensuring the iron core treatment effect, thereby greatly reducing the energy consumption of the iron core heat treatment.
Description
Technical Field
The invention relates to the technical field of motor iron core manufacturing, in particular to a motor iron core heat treatment method.
Background
The motor is one of important equipment in industrial production, the iron core is a core component of the motor, and the quality of the motor iron core is closely related to the motor performance; in order to improve the motor performance, heat treatment is generally required to be performed on the motor iron core, and the heat treatment can improve the organization structure of the iron core, so that the efficiency and the stability of the motor operation are improved.
The existing heat treatment method of the motor iron core generally needs to place the iron core in an environment exceeding 600 ℃ for treatment, the duration of the heating and heat preservation stages in the whole heat treatment process is long, and a large amount of energy sources can be consumed by long-time high-temperature heating.
Disclosure of Invention
The invention aims to provide a motor iron core heat treatment method which can shorten the time of heating and heat preservation stages and reduce the energy consumption of iron core heat treatment.
To achieve the purpose, the invention adopts the following technical scheme:
the motor iron core heat treatment method comprises the following steps:
s1, oil removal stage: placing the iron core into a heat treatment furnace, starting the heat treatment furnace, raising the furnace temperature to 400 ℃, preserving the heat for 30 minutes, and removing oil stains on the iron core;
s2, heating: raising the furnace temperature to 660 ℃;
s3, a rapid annealing stage: raising the furnace temperature to 690 ℃ and preserving heat for 30 minutes, and then lowering the furnace temperature to 600 ℃;
s4, a secondary annealing stage: raising the furnace temperature to 690 ℃ and preserving heat for 30 minutes, and then lowering the furnace temperature to 660 ℃ and preserving heat for 10 minutes;
s5, bluing: lowering the furnace temperature to 480 ℃ and preserving heat for 40 minutes, and carrying out bluing treatment on the iron core;
s6, a cooling stage: the furnace temperature is reduced to room temperature.
Preferably, step S2 further comprises, before:
and injecting a protective gas into the heat treatment furnace.
Preferably, the shielding gas includes carbon monoxide, carbon dioxide, hydrogen and nitrogen.
The invention has the beneficial effects that:
according to the motor iron core heat treatment method provided by the invention, the furnace temperature is raised to carry out oil removal treatment on the iron core, so that oil stains stained on the iron core in the processing process are removed, and good processing conditions are created for later injection molding or spraying treatment; because the motor iron core heat treatment method comprises a rapid annealing stage and a secondary annealing stage, the furnace temperature is required to be raised to 690 ℃ in the two annealing stages, and then the heat preservation is carried out for 30 minutes, compared with the current single annealing treatment method, the motor iron core heat treatment method greatly reduces the energy consumption for iron core heat treatment by increasing the primary annealing flow and the furnace temperature of the two annealing flows, shortens the time of the whole heating and heat preservation stage while ensuring the original treatment effect of the iron core.
Drawings
Fig. 1 is a flow chart of a heat treatment method for a motor core according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1, the present invention provides a motor core heat treatment method, which includes:
s1, oil removal stage: placing the iron core into a heat treatment furnace, starting the heat treatment furnace, raising the furnace temperature to 400 ℃, preserving the heat for 30 minutes, and removing oil stains on the iron core. In this embodiment, the iron core is first placed in a heat treatment furnace dedicated in the art, and the furnace temperature is raised to 400 ℃, and the temperature is maintained for 30 minutes, so that the oil removal treatment is conveniently performed on the iron core, and the stamping oil on the iron core is removed, so that good processing conditions are created for the later injection molding or spraying treatment.
S2, heating: the furnace temperature was raised to 660 ℃. Specifically, after the oil removal stage is completed, the furnace temperature is raised to 660 ℃ to prepare for the re-heating in the subsequent rapid annealing stage.
S3, a rapid annealing stage: the furnace temperature was raised to 690 ℃ and incubated for 30 minutes, followed by lowering the furnace temperature to 600 ℃. In this example, the temperature was maintained at 660℃for 10 minutes, then the temperature was raised to 690℃and maintained for 30 minutes, and then the temperature was lowered to 600℃to complete the first annealing treatment; the maximum furnace temperature of the prior iron core heat treatment method is generally 660 ℃, and the furnace temperature in the rapid annealing stage is higher than that of the prior iron core heat treatment method.
S4, a secondary annealing stage: the furnace temperature was raised to 690 ℃ and incubated for 30 minutes, followed by lowering the furnace temperature to 660 ℃ and incubation for 10 minutes. In the embodiment, when the furnace temperature is reduced to 600 ℃, the furnace temperature is increased to 690 ℃ and the temperature is kept for 30 minutes, so that the iron core is subjected to secondary annealing treatment; the iron core is subjected to two continuous annealing treatments, so that the internal stress of the iron core can be effectively eliminated, the organization structure of the iron core is improved, and the loss of the iron core during operation is reduced; specifically, the furnace temperature of the continuous two times of annealing treatment is higher than that of the original iron core treatment method, the total time length of the rapid annealing stage and the secondary annealing stage is shortened by about 40 minutes compared with that of the original heating and heat preservation stage, and the energy consumption of the iron core heat treatment can be reduced on the premise of ensuring the original treatment effect, so that the aim of saving energy is achieved.
S5, bluing: the furnace temperature is reduced to 480 ℃ and the temperature is kept for 40 minutes, and the iron core is subjected to bluing treatment. In this embodiment, bluing treatment is required to be performed on the iron core in the bluing stage, so that a smooth and compact oxidation protection film is formed on the surface of the iron core, and thus the iron core has the characteristics of corrosion resistance and moisture resistance.
S6, a cooling stage: the furnace temperature is reduced to room temperature. In this embodiment, after the bluing stage is completed, the heat treatment furnace is closed, and after the furnace temperature is lowered to room temperature, the iron core is taken out.
Further, before step S2, the method further includes: and injecting a protective gas into the heat treatment furnace. In this embodiment, the protection gas needs to be injected into the heat treatment furnace before the temperature rising stage, so that the iron core is more stable in the heat treatment process, and the safety of the whole heat treatment process is improved.
Specifically, the shielding gas includes carbon monoxide, carbon dioxide, hydrogen, and nitrogen. In this example, carbon monoxide, carbon dioxide, hydrogen and nitrogen are common in the art as the protective gas for heat treatment in the furnace, and the preparation method and the use cost are low.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (3)
1. The motor iron core heat treatment method is characterized by comprising the following steps:
s1, oil removal stage: placing the iron core into a heat treatment furnace, starting the heat treatment furnace, raising the furnace temperature to 400 ℃, preserving the heat for 30 minutes, and removing oil stains on the iron core;
s2, heating: raising the furnace temperature to 660 ℃;
s3, a rapid annealing stage: raising the furnace temperature to 690 ℃ and preserving heat for 30 minutes, and then lowering the furnace temperature to 600 ℃;
s4, a secondary annealing stage: raising the furnace temperature to 690 ℃ and preserving heat for 30 minutes, and then lowering the furnace temperature to 660 ℃ and preserving heat for 10 minutes;
s5, bluing: lowering the furnace temperature to 480 ℃ and preserving heat for 40 minutes, and carrying out bluing treatment on the iron core;
s6, a cooling stage: the furnace temperature is reduced to room temperature.
2. The motor core heat treatment method according to claim 1, further comprising, before step S2:
and injecting a protective gas into the heat treatment furnace.
3. The method of claim 2, wherein the shielding gas comprises carbon monoxide, carbon dioxide, hydrogen, and nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311497136.3A CN117385154A (en) | 2023-11-10 | 2023-11-10 | Motor iron core heat treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311497136.3A CN117385154A (en) | 2023-11-10 | 2023-11-10 | Motor iron core heat treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117385154A true CN117385154A (en) | 2024-01-12 |
Family
ID=89439156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311497136.3A Pending CN117385154A (en) | 2023-11-10 | 2023-11-10 | Motor iron core heat treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117385154A (en) |
-
2023
- 2023-11-10 CN CN202311497136.3A patent/CN117385154A/en active Pending
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