CN107630133A - A kind of production method of the excellent high grade electrical steel product of frequency property - Google Patents
A kind of production method of the excellent high grade electrical steel product of frequency property Download PDFInfo
- Publication number
- CN107630133A CN107630133A CN201610562806.9A CN201610562806A CN107630133A CN 107630133 A CN107630133 A CN 107630133A CN 201610562806 A CN201610562806 A CN 201610562806A CN 107630133 A CN107630133 A CN 107630133A
- Authority
- CN
- China
- Prior art keywords
- high grade
- product
- top layer
- nitriding
- electrical steel
- 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
Abstract
The present invention relates to a kind of production method of the excellent high grade electrical steel product of frequency property, including：1) nitriding temperature is 750~1000 DEG C in first paragraph soaking pit；Under original atmosphere state, 5%~50% pure ammonia is passed through, nitriding time is controlled in 5~200s；2) according to finished product thickness specification, data are detected as guidance using nitrogen content in stove, it is 30~1000ppm to control high grade electric steel surface nitrogen content；3) it is transferred to second segment soaking pit and carries out subsequent production.The present invention adjusts finished product Technology for Heating Processing by increasing surface carburization process, realizes the gradient distribution of product tissue, it had both been adapted to the tissue need in low-frequency magnetic section, and can adapts to the top layer fine tissue demand of electronic curing；It is avoided to realize end properties and uses more high alloy content and the drawbacks of more Thin Specs method causes production difficulty increase.
Description
Technical field
The present invention relates to technical field of electrical sheet production, more particularly to the high grade electric steel production that a kind of frequency property is excellent
The production method of product.
Background technology
Cold rolling electric is wide variety of metal function soft magnetic materials, is mainly used in the iron of all kinds of motors and electrical equipment
Core manufacturing field.With the technological progress of downstream industry, the extensive use of converter technique, high frequency frequency-variable efficient motor is increasingly becoming
Main product, requirements at the higher level are proposed to efficient electrical sheet electromagnetic performance：On the one hand require that it reaches normal in low frequency operation section
It is horizontal to advise electromagnetic performance, on the other hand requires that it possesses high-frequency low-consumption characteristic in medium-high frequency operation interval, and to realize this two
The production tool that the conflicting performance of kind result in such electrical steel product acquires a certain degree of difficulty.
In conventional high grade electric steel production, smelting process priority control steel cleanliness factor index, reduce to greatest extent
The harmful elements such as sulphur, nitrogen, titanium, avoid the formation of second phase particles, influence later stage favourable microstructure texture component generation；Finished product is heat-treated
The continuous annealing furnace technology of process generally use two-part soaking, hanker for one section controlling decarburization and recrystallization process, two sections of height
Warm thermal control crystal grain is grown up, and mitigates magnetic hystersis loss.In addition, without nitriding process in conventional high grade electric steel production.
The electrical steel product of frequency conversion field application just progressively develops to high-grade, low iron loss, the high trade mark, or to Thin Specs
Production development, to reduce the eddy-current loss being increased sharply, relatively tiny finished product tissue need to be obtained, therefore high grade electric steel produces
Product also need to control thick tissue and the distribution of fine tissue in finished product when producing.
The content of the invention
The invention provides a kind of production method of the excellent high grade electrical steel product of frequency property, by increasing surface
Nitriding process, and finished product Technology for Heating Processing is adjusted, the gradient distribution of product tissue is realized, it had both been adapted to low-frequency magnetic section
Tissue need, and can adapt to electronic curing top layer fine tissue demand；It is avoided to realize end properties and use is higher
Alloy content and the drawbacks of more Thin Specs method causes production difficulty increase.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of production method of the excellent high grade electrical steel product of frequency property, the change of the high grade electrical steel product
Study and be grouped into：C≤0.003%, Si 3.0%~4.0%, Al 0.5%~1.0%, Mn 0.10%~0.30%, P≤
0.012%, S≤0.0015%, N≤0.0020%, remaining is Fe and other inevitable residual elements；Finished product heat treatment is adopted
With the continuous annealing furnace annealing of two-part soaking；Including：
1) top layer nitridation process process is increased in first paragraph soaking pit, nitriding temperature is 750~1000 DEG C, ensures nitriding
Heat power；Under original atmosphere state, 5%~50% pure ammonia is passed through, by decomposing activated nitrogen atom caused by ammonia and height
React on grade electric steel surface；Nitriding time is controlled in 5~200s；
2) according to finished product thickness specification, data is detected as guidance using nitrogen content in stove, control high grade electric steel surface nitrogen
Content is 30~1000ppm；
3) it is transferred to second segment soaking pit and carries out subsequent production, because of the inhibitory action of top layer nitride, makes high grade electric steel
Obtain the Tissue distribution form that vertical section top layer is relatively tiny, center portion is relatively coarse.
Compared with prior art, the beneficial effects of the invention are as follows：
1) by adjusting finished product Technology for Heating Processing, the gradient distribution of product tissue is realized, it is both adapted to low-frequency magnetic
The tissue need in section, and can adapt to the top layer fine tissue demand of electronic curing；
2) in conventional production frequently with high frequency high resistivity high alloy steel grade or more Thin Specs to realize end properties, but its
The low technological difficulties of the cold rolling recovery rate brought are difficult to overcome；The present invention can use compared with think gauge without using high alloy steel grade
Product realizes end properties, meets application requirement；Its production difficulty substantially reduces, and can reduce production cost.
Embodiment
A kind of production method of the excellent high grade electrical steel product of frequency property of the present invention, the high trade mark electrician
The chemical composition of product made from steel forms：C≤0.003%, Si 3.0%~4.0%, Al 0.5%~1.0%, Mn 0.10%~
0.30%, P≤0.012%, S≤0.0015%, N≤0.0020%, remaining is Fe and other inevitable residual elements；Into
Product heat treatment uses the continuous annealing furnace annealing of two-part soaking；Finished product heat treatment is moved back using the continuous annealing furnace of two-part soaking
Fire；Including：
1) top layer nitridation process process is increased in first paragraph soaking pit, nitriding temperature is 750~1000 DEG C, ensures nitriding
Heat power；Under original atmosphere state, 5%~50% pure ammonia is passed through, by decomposing activated nitrogen atom caused by ammonia and height
React on grade electric steel surface；Nitriding time is controlled in 5~200s；
2) according to finished product thickness specification, data is detected as guidance using nitrogen content in stove, control high grade electric steel surface nitrogen
Content is 30~1000ppm；
3) it is transferred to second segment soaking pit and carries out subsequent production, because of the inhibitory action of top layer nitride, makes high grade electric steel
Obtain the Tissue distribution form that vertical section top layer is relatively tiny, center portion is relatively coarse.
Following examples are implemented under premised on technical solution of the present invention, give detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to following embodiments.Method therefor is such as without spy in following embodiments
It is conventional method not mentionlet alone bright.
【Embodiment 1】
Main chemical compositions are：C：0.0029%, Si：3.11%, Al：0.53%, Mn:0.13%, P：0.010%, S：
0.0014%, N：0.0018%, in two-period form continuous annealing furnace, the first soaking zone nitriding temperature of control is at 910 DEG C；Atmosphere is whole
Body control is N2(60%)+H2(25%)+NH3(15%)；Adjustment annealing furnace unit operation speed and bringing-up section furnace superintendent, control are oozed
Nitrogen processing time 25s, it is 95ppm to control nitrogen content by the detection of nitrogen oxygen instrument；Second segment soaking pit controls 1060 DEG C of heating-up temperature；
Final finished top layer (the 10% of cross dimensions) crystallite dimension is 80 μm, and core structure is 185 μm.
Product conventional electromagnetic performance P1.5/50 is 2.32W/kg, under product 400Hz magnetization, P1.0/400 15.12W/
kg。
【Embodiment 2】
Main chemical compositions are：C：0.0027%, Si：3.21%, Al：0.83%, Mn:0.15%, P：0.008%, S：
0.0013%, N：0.0019%, in two-period form continuous annealing furnace, the first soaking zone nitriding temperature of control is at 860 DEG C；Atmosphere is whole
Body control is N2(58%)+H2(24%)+NH3(18%)；Adjustment annealing furnace unit operation speed and bringing-up section furnace superintendent, control are oozed
Nitrogen processing time 29s, it is 105ppm to control nitrogen content by the detection of nitrogen oxygen instrument；Second segment soaking pit controls heating-up temperature 1060
℃；Final finished top layer (the 10% of cross dimensions) crystallite dimension is 82 μm, and core structure is 183 μm.
Product conventional electromagnetic performance P1.5/50 is 2.25W/kg, under product 400Hz magnetization, P1.0/400 14.72W/
kg。
【Embodiment 3】
Main chemical compositions are：C：0.0025%, Si：3.32%, Al：0.65%, Mn:0.19%, P：0.010%, S：
0.0014%, N：0.0019%, in two-period form continuous annealing furnace, the first soaking zone nitriding temperature of control is at 880 DEG C；Atmosphere is whole
Body control is N2(57%)+H2(23%)+NH3(20%)；Adjustment annealing furnace unit operation speed and bringing-up section furnace superintendent, control are oozed
Nitrogen processing time 26s, it is 102ppm to control nitrogen content by the detection of nitrogen oxygen instrument；Second segment soaking pit controls heating-up temperature 1060
℃；Final finished top layer (the 10% of cross dimensions) crystallite dimension is 85 μm, and core structure is 186 μm.
Product conventional electromagnetic performance P1.5/50 is 2.19W/kg, under product 400Hz magnetization, P1.0/400 13.93W/
kg。
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (1)
1. a kind of production method of the excellent high grade electrical steel product of frequency property, the chemistry of the high grade electrical steel product
Into being grouped into：C≤0.003%, Si 3.0%~4.0%, Al 0.5%~1.0%, Mn 0.10%~0.30%, P≤
0.012%, S≤0.0015%, N≤0.0020%, remaining is Fe and other inevitable residual elements；Finished product heat treatment is adopted
With the continuous annealing furnace annealing of two-part soaking；It is characterised in that it includes：
1) top layer nitridation process process is increased in first paragraph soaking pit, nitriding temperature is 750~1000 DEG C, ensures that nitriding heat is dynamic
Power；Under original atmosphere state, 5%~50% pure ammonia is passed through, by decomposing activated nitrogen atom caused by ammonia and the high trade mark
Electrician's steel surface is reacted；Nitriding time is controlled in 5~200s；
2) according to finished product thickness specification, data is detected as guidance using nitrogen content in stove, control high grade electric steel surface nitrogen content
For 30~1000ppm；
3) it is transferred to second segment soaking pit and carries out subsequent production, because of the inhibitory action of top layer nitride, obtains high grade electric steel
The Tissue distribution form that vertical section top layer is relatively tiny, center portion is relatively coarse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610562806.9A CN107630133B (en) | 2016-07-18 | 2016-07-18 | A kind of production method of the excellent high grade electrical steel product of frequency property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610562806.9A CN107630133B (en) | 2016-07-18 | 2016-07-18 | A kind of production method of the excellent high grade electrical steel product of frequency property |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107630133A true CN107630133A (en) | 2018-01-26 |
| CN107630133B CN107630133B (en) | 2019-06-28 |
Family
ID=61112630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610562806.9A Active CN107630133B (en) | 2016-07-18 | 2016-07-18 | A kind of production method of the excellent high grade electrical steel product of frequency property |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107630133B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561597A (en) * | 2022-01-17 | 2022-05-31 | 武汉科技大学 | Low-iron-loss high-magnetic-induction oriented silicon steel thin strip and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1481444A (en) * | 2000-12-18 | 2004-03-10 | ��ɭ��²����ǡ��˹��ǡ���ض������� | Process for prodn. of grain oriented electrical steel strips |
| CN101358273A (en) * | 2008-09-05 | 2009-02-04 | 首钢总公司 | Method for producing low-temperature oriented electrical steels |
| CN101876028A (en) * | 2009-12-22 | 2010-11-03 | 武汉钢铁(集团)公司 | Non-oriented electrical steel for variable frequency motor and production method thereof |
| CN103074476A (en) * | 2012-12-07 | 2013-05-01 | 武汉钢铁(集团)公司 | Method for producing high-magnetic-induction oriented silicon strips through three-stage normalizing |
| CN103540846A (en) * | 2013-08-27 | 2014-01-29 | 国家电网公司 | Thin-gauge, ultra-low iron loss, low-noise and high-magnetic induction oriented silicon steel sheet and production method thereof |
| CN105256226A (en) * | 2015-11-20 | 2016-01-20 | 武汉钢铁(集团)公司 | Cold-rolled non-oriented silicon steel low in iron loss and production method |
-
2016
- 2016-07-18 CN CN201610562806.9A patent/CN107630133B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1481444A (en) * | 2000-12-18 | 2004-03-10 | ��ɭ��²����ǡ��˹��ǡ���ض������� | Process for prodn. of grain oriented electrical steel strips |
| CN101358273A (en) * | 2008-09-05 | 2009-02-04 | 首钢总公司 | Method for producing low-temperature oriented electrical steels |
| CN101876028A (en) * | 2009-12-22 | 2010-11-03 | 武汉钢铁(集团)公司 | Non-oriented electrical steel for variable frequency motor and production method thereof |
| CN103074476A (en) * | 2012-12-07 | 2013-05-01 | 武汉钢铁(集团)公司 | Method for producing high-magnetic-induction oriented silicon strips through three-stage normalizing |
| CN103540846A (en) * | 2013-08-27 | 2014-01-29 | 国家电网公司 | Thin-gauge, ultra-low iron loss, low-noise and high-magnetic induction oriented silicon steel sheet and production method thereof |
| CN105256226A (en) * | 2015-11-20 | 2016-01-20 | 武汉钢铁(集团)公司 | Cold-rolled non-oriented silicon steel low in iron loss and production method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561597A (en) * | 2022-01-17 | 2022-05-31 | 武汉科技大学 | Low-iron-loss high-magnetic-induction oriented silicon steel thin strip and preparation method thereof |
| CN114561597B (en) * | 2022-01-17 | 2023-03-10 | 武汉科技大学 | Low-iron-loss high-magnetic-induction oriented silicon steel thin strip and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107630133B (en) | 2019-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101070064B1 (en) | Process for producing grain-oriented magnetic steel sheet with high magnetic flux density | |
| TWI605128B (en) | Non-directional electromagnetic steel plate manufacturing method | |
| JP5842400B2 (en) | Method for producing grain-oriented electrical steel sheet | |
| TWI472626B (en) | Method of manufacturing directional magnetic steel sheet and recrystallization annealing equipment of directional magnetic steel sheet | |
| KR101062127B1 (en) | Method for manufacturing directional electromagnetic steel sheet with high magnetic flux density | |
| JP5320690B2 (en) | Method for producing grain-oriented electrical steel sheet with high magnetic flux density | |
| CN115176044B (en) | Non-oriented electrical steel sheet and method for manufacturing same | |
| TW201718911A (en) | Process for producing non-oriented electromagnetic steel sheet | |
| CN102575314B (en) | Low-core-loss, high-magnetic-flux density, grain-oriented electrical steel sheet and production method therefor | |
| TW201610179A (en) | Non-oriented electrical steel sheet and manufacturing method thereof | |
| KR20130101099A (en) | Manufacture method of oriented silicon steel having good magnetic performance | |
| JP5332134B2 (en) | Manufacturing method of high magnetic flux density grain-oriented electrical steel sheet | |
| WO1995013401A1 (en) | Production method of directional electromagnetic steel sheet of low temperature slab heating system | |
| KR20150074933A (en) | Grain oriented electrical steel and preparation method thereof | |
| CN101748259B (en) | Method for producing high magnetic induction grain-oriented silicon steel by low temperature heating | |
| CN107630133B (en) | A kind of production method of the excellent high grade electrical steel product of frequency property | |
| CN111266416B (en) | Production method for controlling warping of non-oriented silicon steel rough rolling plate blank | |
| JP5068579B2 (en) | Manufacturing method of high magnetic flux density grain-oriented electrical steel sheet | |
| CN107245564A (en) | A kind of control method of non-orientation silicon steel internal oxidation layer | |
| CN101573458A (en) | Method for manufacturing grain-oriented electrical steel sheets with excellent magnetic property and high productivity | |
| JP5068580B2 (en) | Method for producing grain-oriented electrical steel sheet with high magnetic flux density | |
| JP3275712B2 (en) | High silicon steel sheet excellent in workability and method for producing the same | |
| JP2003213339A (en) | Method for producing grain oriented silicon steel sheet having excellent magnetic property | |
| KR101516377B1 (en) | Oriented electrical steel sheet and method for manufacturing the same | |
| WO2023079922A1 (en) | Finish annealing facility for electromagnetic steel sheet, finish annealing method and production method for electromagnetic steel sheet, and non-oriented electromagnetic steel sheet |
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 |