CN109735791A - A kind of processing method of silicon steel - Google Patents
A kind of processing method of silicon steel Download PDFInfo
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- CN109735791A CN109735791A CN201910221888.4A CN201910221888A CN109735791A CN 109735791 A CN109735791 A CN 109735791A CN 201910221888 A CN201910221888 A CN 201910221888A CN 109735791 A CN109735791 A CN 109735791A
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Abstract
The invention discloses a kind of processing methods of silicon steel, are related to metal material field, which includes: to carry out carburizing by heat treatment process to silicon steel and/or nitrogen is handled.Carburizing is carried out to silicon steel by heat treatment process and/or nitrogen is handled, the iron in carbon and silicon steel will form cementite Fe3Iron in C, nitrogen and silicon steel will form nitrided iron Fe4N (wherein, the iron that the iron in silicon steel includes its surface and inside), due to cementite Fe3C and nitrided iron Fe4N all has magnetism, and the two cooperation enables to the magnetic induction intensity of silicon steel to be obviously improved.
Description
Technical field
The present invention relates to metal material field, in particular to a kind of processing method of silicon steel.
Background technique
Silicon steel refers to siliceous for 1.0-4.5%, Antaciron of the phosphorus content less than 0.08%, it have magnetic permeability it is high,
The characteristics such as coercivity is low, resistance coefficient is big, in the electrical equipments such as useable electric moter, transformer.
However, discovery is probed into, when in electrical equipment, if improving silicon steel, such as the magnetic induction of silicon steel band is strong
It spends (i.e. B value), can be conducive to save dosage, reduce cost.So the magnetic induction intensity for how improving silicon steel seems very necessary,
And effective solution mode is not found at present.
Summary of the invention
In consideration of it, the present invention provides a kind of processing method of silicon steel, the magnetic induction intensity of silicon steel can be effectively improved.It is specific and
Speech, including technical solution below:
The embodiment of the invention provides a kind of processing methods of silicon steel, the treating method comprises: by heat treatment process,
Carburizing and/or nitrogen processing are carried out to silicon steel.
In one possible implementation, carbo-nitriding processing is carried out to the silicon steel using carbonitriding medium.
In one possible implementation, the carbonitriding medium is the mixture for including carbon source and nitrogen source, alternatively, being
Organic matter containing carbon and nitrogen simultaneously.
In one possible implementation, the carbon source is grease or resinae；
The nitrogen source is Ammonia or amine.
In one possible implementation, the carbon source further include: carbon dust and/or graphite powder.
In one possible implementation, before being heat-treated, the carbon source passes through coating, instillation or Vaccum Permeating
Lacquer craftwork is placed in the surface of silicon steel, also, when being heat-treated, and is passed through the nitrogen source of gas form.
In one possible implementation, when being heat-treated, the silicon steel is immersed in described in liquid form
In carbon source, while being passed through the nitrogen source of gas form.
In one possible implementation, when being heat-treated, the silicon steel is made to be immersed in the described of liquid form
In carbonitriding medium；Alternatively, being placed in the silicon steel in the carbonitriding medium of gas form.
In one possible implementation, the silicon steel includes: silicon steel band.
In one possible implementation, when being heat-treated, heat treatment temperature >=200 DEG C, heat treatment time is at least
Greater than 5 minutes.
The beneficial effect of technical solution provided in an embodiment of the present invention includes at least:
The processing method of silicon steel provided in an embodiment of the present invention carries out carburizing and/or nitrogen to silicon steel by heat treatment process
Processing (including individual Carburization Treatment, independent Nitrizing Treatment and carbo-nitriding processing), wherein the iron meeting in carbon and silicon steel
Form cementite Fe3Iron in C, nitrogen and silicon steel will form nitrided iron Fe4(wherein, the iron in silicon steel includes its surface and inside to N
Iron), due to cementite Fe3C and nitrided iron Fe4N all has magnetism, and the two cooperation enables to the magnetic induction intensity of silicon steel
(also referred to as magnetic flux density or B value) is obviously improved.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, embodiment of the present invention will be made below further detailed
Thin description.
The embodiment of the invention provides a kind of processing method of silicon steel, the processing method include: by heat treatment process, it is right
Silicon steel carries out carburizing and/or nitrogen processing.
The processing method of silicon steel provided in an embodiment of the present invention carries out carburizing and/or nitrogen to silicon steel by heat treatment process
Processing (including individual Carburization Treatment, independent Nitrizing Treatment and carbo-nitriding processing), wherein the iron meeting in carbon and silicon steel
Form cementite Fe3Iron in C, nitrogen and silicon steel will form nitrided iron Fe4(wherein, the iron in silicon steel includes its surface and inside to N
Iron), due to cementite Fe3C and nitrided iron Fe4N all has magnetism, and the two cooperation enables to the magnetic induction intensity of silicon steel
(also referred to as magnetic flux density or B value) is obviously improved.
It should be noted that related silicon steel includes but is not limited to silicon steel band in the embodiment of the present invention.
In one possible implementation, it can use carbon source and Carburization Treatment carried out to silicon steel, to form cementite
Fe3C。
In one possible implementation, it can use nitrogen source and Nitrizing Treatment carried out to silicon steel, to form nitrided iron
Fe4N。
In one possible implementation, it can use carbonitriding medium and carbo-nitriding processing carried out to silicon steel, with same
When formed cementite Fe3C and nitrided iron Fe4N。
It is understood that carrying out carbo-nitriding processing to silicon steel, can be total on the surface of silicon steel and the internal carbon nitrogen that formed
Compound is seeped, also, is based on carbo-nitriding principle, carburizing amount is higher than nitriding amount, that is, based on carburizing, supplemented by nitriding.
It is above-mentioned to refer to, silicon steel is heat-treated using carbonitriding medium, wherein carbonitriding medium provide simultaneously carbon and
Nitrogen, carbonitriding medium can be mixture, also that is, carbonitriding medium can be the mixture for including carbon source and nitrogen source；It can also be with
It is the compound containing carbon and nitrogen simultaneously, also that is, carbonitriding medium is the organic matter containing carbon and nitrogen simultaneously.For
For the carbonitriding medium of both forms, included in the molar ratio of carbon and nitrogen can be 2-5:1, with true
It protects carburizing amount and is higher than nitriding amount.
With include the mixture of carbon source and nitrogen source for example, wherein carbon source and nitrogen source can using gas form or
Person's liquid form, and the two may be the same or different.When the two selects gas form simultaneously, silicon steel can be made to set
In the carbonitriding medium atmosphere of flowing, the carbonitriding medium of certain time can also be continually fed into reaction system.When two
When person selects liquid form simultaneously, silicon steel can be immersed in carbonitriding medium.
Illustratively, carbon source may include organic carbon source and inorganic carbon source, wherein organic carbon source includes but is not limited to: grease, tree
Rouge, carbohydrate, fatty acid, Organic Alcohol, organic ketone etc..Inorganic carbon source includes but is not limited to: carbon dioxide etc..
It in view of the material of silicon steel, and needs to carry out Carburization Treatment by heat treatment process, for the ease of carbon source and silicon
The combination of steel, in the embodiment of the present invention, carbon source can be grease or resinae.
For example with grease comprising but be not limited to: oils and fats can be for example with oils plant
Object oil, mineral oil (such as petroleum, kerosene), organic synthesis oil etc..As an example, Dowtherm is as a kind of thermally conductive oils,
It can be used as the carbon source in the embodiment of the present invention.
For example with resinae comprising but be not limited to: the liquid resins such as epoxy resin, phenolic resin, alkyd resin,
They have adhesivity, convenient for being placed in surface of silicon steel.
Further, in order to improve carburizing amount, carbon source provided in an embodiment of the present invention further include: carbon dust and/or graphite powder.
As an example, carbon dust and/or graphite powder can be mixed into oils or resinae carbon source, forms phosphorus content more
High carbon source.Wherein, the doping mass percent of carbon dust and/or graphite powder in total carbon source can be not less than 0.05%, such as
10%, 15%, 20%, 30%, 50%, 100%, 200% or higher.
Wherein, the partial size of carbon dust and graphite powder is controlled in nanoscale, to improve carburizing effect.
In order to further increase carburizing amount, carbon source provided in an embodiment of the present invention further include: carburizing promotor, wherein seep
Carbon promotor can be BaCO3、CaCO3Or Na2CO3Deng the doping mass percent of carburizing promotor can the total carbon source quality of Zhan
10% within, such as 3%, 4%, 5% etc..
As an example, such a carbon source can be provided comprising: oils and/or resinae, carbon dust and/or stone
Ink powder and carburizing promotor.
As another example, such a carbon source can be provided comprising: oils and/or resinae and carburizing promote
Into agent.
As another example, such a carbon source can be provided comprising: oils and/or resinae.
In the embodiment of the present invention, the nitrogen source being applicable in can be Ammonia or amine, for example, nitrogen source can be ammonia
Gas, and it is possible to carry out permeation processing by way of being passed through ammonia.Nitrogen source can also for triethanolamine, urea etc., also,
Permeation processing can be carried out by way of instiling or submerging.
For how by the surface and inside of carbonitriding medium infiltration silicon steel, following example illustrates:
As an example, before being heat-treated, carbon source is placed in silicon steel by coating, instillation or vacuum paint dipping technique
Surface, also, when being heat-treated, it is passed through the nitrogen source of gas form.
For example, carbon source can be placed in surface of silicon steel by modes such as brushing, spraying, instillation, then to silicon steel into
Row heat treatment, and during heat treatment, ammonia can be passed through.In further example, during carbo-nitriding, Ke Yitong
Carbon source is placed in surface of silicon steel by the mode for crossing instillation kerosene, ethyl alcohol or acetone, and is passed through ammonia.Alternatively, can also be by continuous
Instillation triethanolamine carries out carbo-nitriding dissolved with the mode of the alcohol of urea.
As another example, when being heat-treated, silicon steel is immersed in the carbon source of liquid form, while being passed through gas
The nitrogen source of body form.
For example, when carbon source is oils, silicon steel can be made to be immersed in Dowtherm, and be passed through nitrogen, carries out oil bath
Heating, this kind of mode can not only make carburizing nitrogen uniform, and heated perimeter when heat treatment can be made more uniform, mention
High carburizing effect.
As another example, when being heat-treated, it is immersed in silicon steel directly in the carbonitriding medium of liquid form.
Alternatively, being placed in silicon steel in the carbonitriding medium of gas form.
For example, carbon source is Organic Alcohol, and nitrogen source can be urea, and the two is mixed to form the carbo-nitriding of liquid form
Agent is heat-treated in application, silicon steel is immersed in carbonitriding medium.
When being heat-treated using heat treatment process, can be carried out by using heat-treatment furnace, so that carbo-nitriding
Journey is simply controllable.
It is different based on material when being heat-treated, heat treatment temperature can with >=200 DEG C, such as can for 200 DEG C-
1000 DEG C, in further example, heat treatment temperature can be 200 DEG C, 230 DEG C, 250 DEG C, 280 DEG C, 300 DEG C, 310 DEG C, 320
℃、330℃、340℃、350℃、360℃、370℃、380℃、400℃、500℃、550℃、600℃、650℃、700℃、
750 DEG C, 800 DEG C, 900 DEG C, 1000 DEG C etc..It is different according to the thin and thick of silicon steel to be processed, it can accordingly adjust heat treatment temperature.
When being heat-treated, heat treatment time was at least more than 5 minutes, such as can be -10 hours 5 minutes, further lifted
It can be 10 minutes, 30 minutes, 1 hour, 2 hours, 3.5 hours, 5 hours, 6.5 hours, 7 hours, 7.5 hours, 15 for example
Hour, 25 hours or longer time.Size of the size of heat treatment time based on heat treatment temperature and change, for example,
When heat treatment temperature is higher, preferable carburizing and/or nitrogen effect can reach using lower heat treatment time.
It is understood that the carburizing of silicon steel and/or the size of nitrogen quantity can be determined by control heat treatment time, heat
The processing time is longer, and carburizing and/or nitrogen quantity are bigger, and keeps stablizing when reaching certain value.
Hereinafter the present invention can be further described by specific example:
In a kind of example, silicon steel band can be immersed in Dowtherm to (i.e. oil bath, and high pressure sealing), be placed in
It is heat-treated in heat-treatment furnace, during heat treatment, is passed through ammonia in heat treated furnace, obtains the silicon strip of carburizing nitrogen
Material.Wherein, at 800 DEG C, heat treatment time was controlled at 6 hours for heat treatment temperature control.
The fluxmeter sold using lakeshore company, the U.S., respectively to before carbo-nitriding in above-mentioned example and carbon nitrogen
The magnetic induction intensity of silicon steel band after permeation measures, and measurement result is shown, before carbo-nitriding, the magnetic of silicon steel band
Induction is 1.9T (i.e. tesla), and after carbo-nitriding, the magnetic induction intensity of silicon steel band is 2.2T.
In another example, silicon steel band can be immersed in Dowtherm (i.e. oil bath), be placed in heat-treatment furnace
It is heat-treated, during heat treatment, is passed through ammonia in heat treated furnace, obtain the silicon steel band of carburizing nitrogen.Wherein, at heat
Temperature control is managed at 800 DEG C, heat treatment time was controlled at 7.5 hours.
The fluxmeter sold using lakeshore company, the U.S., respectively to before carbo-nitriding in above-mentioned example and carbon nitrogen
The magnetic induction intensity of silicon steel band after permeation measures, and measurement result is shown, before carbo-nitriding, the magnetic of silicon steel band
Induction is 1.9T (i.e. tesla), and after carburizing, the magnetic induction intensity of silicon steel band is 2.24T.
In another example, silicon steel band can be immersed in Dowtherm to (i.e. oil bath, and high pressure sealing), juxtaposition
It is heat-treated in heat-treatment furnace, obtains the silicon steel band of carburizing.Wherein, heat treatment temperature control is at 800 DEG C, heat treatment
Between control at 6 hours.
The fluxmeter sold using lakeshore company, the U.S., respectively to before carbo-nitriding in above-mentioned example and carbon nitrogen
The magnetic induction intensity of silicon steel band after permeation measures, and measurement result is shown, before carbo-nitriding, the magnetic of silicon steel band
Induction is 1.9T (i.e. tesla), and after carbo-nitriding, the magnetic induction intensity of silicon steel band is 2.12T.
In another example, silicon steel band can be placed in heat-treatment furnace and be heat-treated, obtain the silicon steel of carburizing
Band.During heat treatment, it is passed through ammonia in heat treated furnace, obtains the silicon steel band of nitriding.Wherein, heat treatment temperature control
At 800 DEG C, heat treatment time was controlled at 6 hours system.
The fluxmeter sold using lakeshore company, the U.S., respectively to before carbo-nitriding in above-mentioned example and carbon nitrogen
The magnetic induction intensity of silicon steel band after permeation measures, and measurement result is shown, before carbo-nitriding, the magnetic of silicon steel band
Induction is 1.9T (i.e. tesla), and after carbo-nitriding, the magnetic induction intensity of silicon steel band is 2.06T.
By above-mentioned specific example it is found that being handled using the processing method of silicon steel provided in an embodiment of the present invention silicon steel
Afterwards, the magnetic induction intensity of silicon steel is obviously improved, also, with the extension of heat treatment time, the promotion of magnetic induction intensity is imitated
Fruit is more obvious.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (10)
1. a kind of processing method of silicon steel, which is characterized in that the treating method comprises: by heat treatment process, to silicon steel into
Row carburizing and/or nitrogen processing.
2. the processing method of silicon steel according to claim 1, which is characterized in that using carbonitriding medium to the silicon steel into
Row carbo-nitriding processing.
3. the processing method of silicon steel according to claim 2, which is characterized in that the carbonitriding medium be include carbon source and
The mixture of nitrogen source, alternatively, for the organic matter containing carbon and nitrogen simultaneously.
4. the processing method of silicon steel according to claim 3, which is characterized in that the carbon source is grease or resinae；
The nitrogen source is Ammonia or amine.
5. the processing method of silicon steel according to claim 4, which is characterized in that the carbon source further include: carbon dust and/or stone
Ink powder.
6. the processing method of silicon steel according to claim 3, which is characterized in that before being heat-treated, the carbon source
It is placed in the surface of silicon steel by coating, instillation or vacuum paint dipping technique, also, when being heat-treated, is passed through gas form
The nitrogen source.
7. the processing method of silicon steel according to claim 3, which is characterized in that when being heat-treated, by the silicon steel
It is immersed in the carbon source of liquid form, while being passed through the nitrogen source of gas form.
8. the processing method of silicon steel according to claim 2, which is characterized in that when being heat-treated, make the silicon steel
It is immersed in the carbonitriding medium of liquid form；Alternatively, the silicon steel is made to be placed in the carbonitriding medium of gas form
In.
9. the processing method of silicon steel according to claim 1-8, which is characterized in that the silicon steel includes: silicon steel
Band.
10. the processing method of silicon steel according to claim 1, which is characterized in that when being heat-treated, heat treatment temperature >=
200 DEG C, heat treatment time was at least more than 5 minutes.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910221888.4A CN109735791A (en) | 2019-03-22 | 2019-03-22 | A kind of processing method of silicon steel |
| BR112021009247-1A BR112021009247A2 (en) | 2018-11-14 | 2019-11-13 | method for processing sweet magnetic metallic materials |
| EP19886031.4A EP3882368A4 (en) | 2018-11-14 | 2019-11-13 | Treatment method for soft magnetic metallic materials |
| JP2021551328A JP2022510734A (en) | 2018-11-14 | 2019-11-13 | How to treat soft magnetic metal materials |
| KR1020217018147A KR20210092773A (en) | 2018-11-14 | 2019-11-13 | Method of processing soft magnetic metal material |
| PCT/CN2019/117840 WO2020098667A1 (en) | 2018-11-14 | 2019-11-13 | Treatment method for soft magnetic metallic materials |
| CN201980075549.8A CN113015820A (en) | 2018-11-14 | 2019-11-13 | Processing method of soft magnetic metal material |
| US17/293,902 US20220018010A1 (en) | 2018-11-14 | 2019-11-13 | Method for increasing magnetic induction intensity of soft magnetic metallic materials |
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| CN201910221888.4A CN109735791A (en) | 2019-03-22 | 2019-03-22 | A kind of processing method of silicon steel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020098667A1 (en) * | 2018-11-14 | 2020-05-22 | 王静然 | Treatment method for soft magnetic metallic materials |
| CN112863800A (en) * | 2019-11-27 | 2021-05-28 | 王静然 | Soft magnetic material and preparation method thereof |
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| CN101775548A (en) * | 2009-12-31 | 2010-07-14 | 武汉钢铁(集团)公司 | Method for producing low nitriding amount and high magnetic induction oriented silicon steel strip |
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| CN112863800A (en) * | 2019-11-27 | 2021-05-28 | 王静然 | Soft magnetic material and preparation method thereof |
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