CN107119178A - A kind of dynamo sheet annealing process - Google Patents
A kind of dynamo sheet annealing process Download PDFInfo
- Publication number
- CN107119178A CN107119178A CN201710304101.1A CN201710304101A CN107119178A CN 107119178 A CN107119178 A CN 107119178A CN 201710304101 A CN201710304101 A CN 201710304101A CN 107119178 A CN107119178 A CN 107119178A
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- Prior art keywords
- temperature
- punching
- stove
- furnace
- annealing
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- 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
- C21D1/30—Stress-relieving
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A kind of disclosed dynamo sheet annealing process, by carrying out grease early stage cleaning to punching, anneal oxidation stove is re-fed into be made annealing treatment, by rationally controlling annealing time and annealing temperature, the stress of silicon steel sheet is eliminated, it is recovered original magnetic levels, and then improve the magnetic property of the iron core of preparation, so that the electric efficiency prepared is improved, and it is cost-effective to reduce motor temperature rise.
Description
Technical field
The present invention relates to a kind of processing method of dynamo sheet, more particularly to a kind of dynamo sheet annealing process.
Background technology
At present to efficient, ultra-high efficient motor requirement more and more higher, the design cost of motor is continuously increased, and user into
This increase is not allowed to be easily accepted by again, while global resources are also fewer and fewer.And exist electric efficiency improve to a certain extent from
Situation about can not be improved in design.This is accomplished by improving the efficiency of motor from other approach.To realize the height of low cost
Effect, ultra-high efficient motor.
In the prior art, motor stamping processing technology is as follows：
1st, silicon steel sheet blanking；
2nd, punching press stator punching rushes rotor punching axis hole and axis hole keyway simultaneously；
3rd, with axis hole positioning red switch pilot trench hole；
4th, made stator punching is managed to laminate into after piece and enters rule process after stator core, made rotor punching is carried out
Manage and enter casting aluminum rotor process after piece.
For above-mentioned technique, especially for the motor of the less use cold-reduced silicon sheet of the facewidth, if do not had in design
Consider influence of the punching process to teeth portion magnetic conduction, the serious saturation of teeth portion can be caused.Punching burr is largely removed, and in punching institute
There is surface to form uniform oxide film, add insulation between plates.
The content of the invention
It is an object of the invention to provide a kind of dynamo sheet annealing process, increase in conventional motor punching manufacturing procedure
Plus one of annealing operation, by rationally controlling annealing time and annealing temperature, the stress of silicon steel sheet is eliminated, it is recovered original magnetic
Property level, and then improve the magnetic property of the iron core of preparation so that the electric efficiency of preparation is improved, and reduces motor
Temperature rise is cost-effective.
The technical scheme is that：A kind of dynamo sheet annealing process, specifically includes following steps：
A, the good stator and rotor punching of punching silicon-steel is subjected to grease cleaning, it is ensured that its surface noresidue grease；
B, cleaned punching is put into punching anneal oxidation stove and tentatively heated, and open vavuum pump vacuumize progress persistently plus
Thermal process, wherein non-oriented silicon steel sheet heating-up temperature are 250 ± 10 DEG C, and grain-oriented Si steel sheet heating-up temperature is 400 ± 10 DEG C；
C, tentatively heat 1.5~2 hours after, close vavuum pump and be simultaneously passed through hydrogen nitrogen mixed gas and keep furnace pressure 0.01~0.02MPa；
D, rise punching anneal oxidation in-furnace temperature carry out keeping the MPa of furnace pressure 0.01~0.02 in high annealing, temperature-rise period
, wherein non-oriented silicon steel sheet annealing temperature is 720 ± 10 DEG C, and grain-oriented Si steel sheet heating-up temperature is 800 ± 10 DEG C；
Closing furnace pressure valve heat insulation closes power supply and starts to cool after e, annealing terminate after 3~5 hours, and furnace pressure is worked as in temperature-fall period
Descend below 0.012MPa and just supplement hydrogen nitrogen mixed gas；
F, 60 ± 10 DEG C when temperature drop when open Steam generating furnace switch, when furnace temperature declines 120 ± 10 DEG C again, by steam
Anneal oxidation stove is inserted after pipe water dumping, and makes temperature control at 500~600 DEG C, pressurize is in 0.03~0.04 MPa；
G, adjustment punching anneal oxidation furnace pressure and be incubated 1~3 hour after, extract steam pipe, open bell on exhaust
Valve is exhausted, and preprepared nitrogen tube is inserted into anneal oxidation stove, the inflated with nitrogen into stove, when blast pipe no longer draining is steamed
Kept again during vapour 5~15 seconds；
H, the air bleeding valve closed on bell continue inflated with nitrogen to the MPa of furnace pressure 0.03, close nitrogen, close power supply and start drop
Temperature；
I, when furnace temperature drops to 200~300 DEG C bell is unclamped, punching is taken out to progress natural cooling out of stove.
The bonnet and bottom plate of the anneal oxidation stove select low-carbon steel, and send into return of goods oxidation furnace money to stove in punching
Inside clean up, and ensure that the sealing of its burner hearth is intact after feeding.
Disclosed annealing process, by rationally being controlled to annealing time, annealing temperature and annealing atmosphere
System, improves the magnetic of silicon steel sheet on the premise of insulating coating is not influenceed, and for the control of temperature, can cause to apply if temperature is too high
Layer bonding or punching deformation, and control for the time is, it is necessary to strict control heating cool time, if long or can resolutely cause hard
Degree enhancing, so as to increase following process difficulty, causes iron core to deform, for the control of annealing atmosphere, not occur with silicon steel sheet
Reaction（The novel substance in addition to silicon steel is not produced）, can not have oil smoke（Prevent silicon steel sheet nitriding）And do not break ring surface of silicon steel
Coating is principle, from hydrogen-nitrogen mixture gas, prevents silicon steel carburizing from influenceing magnetic.
In addition, in order to prevent carburizing from deteriorating magnetic.To using low-carbon steel in the material selection of annealing furnace, punching sheet surface
Remaining grease, should remove before annealing, prevent punching from aoxidizing.In addition to reasonable selection anneal gas, in practical operation, first have to
Confirm whether burner hearth sealing is intact.Meanwhile, before feeding temperature-raising, first it is passed through protective gas and cleaned in stove.
Beneficial effect：Disclosed a kind of dynamo sheet annealing process, in conventional motor punching manufacturing procedure
One of annealing operation of middle increase, by rationally controlling annealing time and annealing temperature, eliminates the stress of silicon steel sheet, it is recovered former
Be magnetic level, and then improves the magnetic property of the iron core of preparation so that the electric efficiency of preparation is improved, and is reduced
Motor temperature rise is cost-effective.
Embodiment
Below in conjunction with specific embodiment, clear, complete description is carried out to technical scheme.
A kind of disclosed dynamo sheet annealing process, specifically includes following steps：
A, the good stator and rotor punching of punching silicon-steel is subjected to grease cleaning, it is ensured that its surface noresidue grease；
B, cleaned punching is put into punching anneal oxidation stove and tentatively heated, and open vavuum pump vacuumize progress persistently plus
Thermal process, wherein non-oriented silicon steel sheet heating-up temperature are 250 ± 10 DEG C, and grain-oriented Si steel sheet heating-up temperature is 400 ± 10 DEG C；
C, tentatively heat 1.5~2 hours after, close vavuum pump and be simultaneously passed through hydrogen nitrogen mixed gas and keep furnace pressure 0.01~0.02MPa；
D, rise punching anneal oxidation in-furnace temperature carry out keeping the MPa of furnace pressure 0.01~0.02 in high annealing, temperature-rise period
, wherein non-oriented silicon steel sheet annealing temperature is 720 ± 10 DEG C, and grain-oriented Si steel sheet heating-up temperature is 800 ± 10 DEG C；
Closing furnace pressure valve heat insulation closes power supply and starts to cool after e, annealing terminate after 3~5 hours, and furnace pressure is worked as in temperature-fall period
Descend below 0.012MPa and just supplement hydrogen nitrogen mixed gas；
F, 60 ± 10 DEG C when temperature drop when open Steam generating furnace switch, when furnace temperature declines 120 ± 10 DEG C again, by steam
Anneal oxidation stove is inserted after pipe water dumping, and makes temperature control at 500~600 DEG C, pressurize is in 0.03~0.04 MPa；
G, adjustment punching anneal oxidation furnace pressure and be incubated 1~3 hour after, extract steam pipe, open bell on exhaust
Valve is exhausted, and preprepared nitrogen tube is inserted into anneal oxidation stove, the inflated with nitrogen into stove, when blast pipe no longer draining is steamed
Kept again during vapour 5~15 seconds；
H, the air bleeding valve closed on bell continue inflated with nitrogen to the MPa of furnace pressure 0.03, close nitrogen, close power supply and start drop
Temperature；
I, when furnace temperature drops to 200~300 DEG C bell is unclamped, punching is taken out to progress natural cooling out of stove.
The bonnet and bottom plate of the anneal oxidation stove select low-carbon steel, and send into return of goods oxidation furnace money to stove in punching
Inside clean up, and ensure that the sealing of its burner hearth is intact after feeding.
One embodiment to the invention is described in detail above, but the content is only the invention
Preferred embodiment, it is impossible to be considered as the practical range for limiting the invention.It is all to be made according to the invention application range
Equivalent change with improve etc., within the patent covering scope for belonging to the invention.
Claims (2)
1. a kind of dynamo sheet annealing process, it is characterised in that comprise the following steps：
A, the good stator and rotor punching of punching silicon-steel is subjected to grease cleaning, it is ensured that its surface noresidue grease；
B, cleaned punching is put into punching anneal oxidation stove and tentatively heated, and open vavuum pump vacuumize progress persistently plus
Thermal process, wherein non-oriented silicon steel sheet heating-up temperature are 250 ± 10 DEG C, and grain-oriented Si steel sheet heating-up temperature is 400 ± 10 DEG C；
C, tentatively heat 1.5~2 hours after, close vavuum pump and be simultaneously passed through hydrogen nitrogen mixed gas and keep furnace pressure 0.01~0.02MPa；
D, rise punching anneal oxidation in-furnace temperature carry out keeping the MPa of furnace pressure 0.01~0.02 in high annealing, temperature-rise period
, wherein non-oriented silicon steel sheet annealing temperature is 720 ± 10 DEG C, and grain-oriented Si steel sheet heating-up temperature is 800 ± 10 DEG C；
Closing furnace pressure valve heat insulation closes power supply and starts to cool after e, annealing terminate after 3~5 hours, and furnace pressure is worked as in temperature-fall period
Descend below 0.012MPa and just supplement hydrogen nitrogen mixed gas；
F, 60 ± 10 DEG C when temperature drop when open Steam generating furnace switch, when furnace temperature declines 120 ± 10 DEG C again, by steam
Anneal oxidation stove is inserted after pipe water dumping, and makes temperature control at 500~600 DEG C, pressurize is in 0.03~0.04 MPa；
G, adjustment punching anneal oxidation furnace pressure and be incubated 1~3 hour after, extract steam pipe, open bell on air bleeding valve
It is exhausted, preprepared nitrogen tube is inserted into anneal oxidation stove, the inflated with nitrogen into stove, when blast pipe no longer draining steam
When keep again 5~15 seconds；
H, the air bleeding valve closed on bell continue inflated with nitrogen to the MPa of furnace pressure 0.03, close nitrogen, close power supply and start drop
Temperature；
I, when furnace temperature drops to 200~300 DEG C bell is unclamped, stator and rotor punching is taken out to progress natural cooling out of stove.
2. a kind of dynamo sheet annealing process according to claim 1, it is characterised in that：The stove of the anneal oxidation stove
Cover and bottom plate select low-carbon steel, and send into return of goods oxidation furnace money to being cleaned up in stove in punching, and ensure after feeding
The sealing of its burner hearth is intact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710304101.1A CN107119178A (en) | 2017-05-03 | 2017-05-03 | A kind of dynamo sheet annealing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710304101.1A CN107119178A (en) | 2017-05-03 | 2017-05-03 | A kind of dynamo sheet annealing process |
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| CN107119178A true CN107119178A (en) | 2017-09-01 |
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| CN201710304101.1A Pending CN107119178A (en) | 2017-05-03 | 2017-05-03 | A kind of dynamo sheet annealing process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109302010A (en) * | 2018-11-30 | 2019-02-01 | 湖南上临新材料科技有限公司 | A kind of preparation process of the novel solid rotor applied to switched reluctance machines |
| 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 |
| CN111020131A (en) * | 2019-12-24 | 2020-04-17 | 东莞市大忠电子有限公司 | Annealing process of silicon steel iron core |
| CN111850535A (en) * | 2020-08-06 | 2020-10-30 | 中钢集团郑州金属制品研究院有限公司 | Process for controlling surface oxide layer of steel wire |
| CN112553443A (en) * | 2020-12-16 | 2021-03-26 | 首钢智新迁安电磁材料有限公司 | Annealing method of three-dimensional wound iron core |
| CN113564325A (en) * | 2021-08-12 | 2021-10-29 | 上汽大众汽车有限公司 | Heat treatment process for motor iron core for new energy vehicle |
| CN114302972A (en) * | 2020-08-03 | 2022-04-08 | 丰田纺织株式会社 | Heat treatment method and heat treatment furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6159305A (en) * | 1998-07-14 | 2000-12-12 | General Electric Company | High speed induction motor rotor and method of fabrication |
| CN101082075A (en) * | 2006-05-29 | 2007-12-05 | 宝山钢铁股份有限公司 | Process and device for coating-free electrical steel annealing and bluing |
| CN101871041A (en) * | 2010-07-14 | 2010-10-27 | 吴建荣 | Continuous annealing bluing process of sheet punching work piece of cold rolling silicon steel sheet |
| CN102355096A (en) * | 2011-10-12 | 2012-02-15 | 文登奥文电机有限公司 | Motor stamping oxidation and annealing process |
| CN103066768A (en) * | 2013-01-04 | 2013-04-24 | 湖南雪豹电器有限公司 | Production craft utilizing semi-processed steel to produce motor rotor and motor stator |
| CN103060822A (en) * | 2013-01-04 | 2013-04-24 | 湖南雪豹电器有限公司 | Blueing treatment process for semi-processed electrical steel rotor or stator |
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2017
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6159305A (en) * | 1998-07-14 | 2000-12-12 | General Electric Company | High speed induction motor rotor and method of fabrication |
| CN101082075A (en) * | 2006-05-29 | 2007-12-05 | 宝山钢铁股份有限公司 | Process and device for coating-free electrical steel annealing and bluing |
| CN101871041A (en) * | 2010-07-14 | 2010-10-27 | 吴建荣 | Continuous annealing bluing process of sheet punching work piece of cold rolling silicon steel sheet |
| CN102355096A (en) * | 2011-10-12 | 2012-02-15 | 文登奥文电机有限公司 | Motor stamping oxidation and annealing process |
| CN103066768A (en) * | 2013-01-04 | 2013-04-24 | 湖南雪豹电器有限公司 | Production craft utilizing semi-processed steel to produce motor rotor and motor stator |
| CN103060822A (en) * | 2013-01-04 | 2013-04-24 | 湖南雪豹电器有限公司 | Blueing treatment process for semi-processed electrical steel rotor or stator |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109302010A (en) * | 2018-11-30 | 2019-02-01 | 湖南上临新材料科技有限公司 | A kind of preparation process of the novel solid rotor applied to switched reluctance machines |
| 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 |
| CN111020131A (en) * | 2019-12-24 | 2020-04-17 | 东莞市大忠电子有限公司 | Annealing process of silicon steel iron core |
| CN114302972A (en) * | 2020-08-03 | 2022-04-08 | 丰田纺织株式会社 | Heat treatment method and heat treatment furnace |
| CN114302972B (en) * | 2020-08-03 | 2024-02-09 | 丰田纺织株式会社 | Heat treatment method and heat treatment furnace |
| CN111850535A (en) * | 2020-08-06 | 2020-10-30 | 中钢集团郑州金属制品研究院有限公司 | Process for controlling surface oxide layer of steel wire |
| CN112553443A (en) * | 2020-12-16 | 2021-03-26 | 首钢智新迁安电磁材料有限公司 | Annealing method of three-dimensional wound iron core |
| CN112553443B (en) * | 2020-12-16 | 2024-04-12 | 首钢智新迁安电磁材料有限公司 | Three-dimensional rolled iron core annealing method |
| CN113564325A (en) * | 2021-08-12 | 2021-10-29 | 上汽大众汽车有限公司 | Heat treatment process for motor iron core for new energy vehicle |
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Application publication date: 20170901 |