CN102553796A - Method for coating magnesium oxide on surfaces of grain-oriented silicon steel strips - Google Patents
Method for coating magnesium oxide on surfaces of grain-oriented silicon steel strips Download PDFInfo
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- CN102553796A CN102553796A CN2012100012955A CN201210001295A CN102553796A CN 102553796 A CN102553796 A CN 102553796A CN 2012100012955 A CN2012100012955 A CN 2012100012955A CN 201210001295 A CN201210001295 A CN 201210001295A CN 102553796 A CN102553796 A CN 102553796A
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- silicon steel
- oriented silicon
- steel band
- magnesium oxide
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Abstract
The invention discloses a method for coating magnesium oxide on surfaces of grain-oriented silicon steel strips, which includes feeding a grain-oriented silicon steel strip to be coated with magnesium oxide between two coating rolls and then spraying magnesium oxide onto the grain-oriented silicon steel strip by a magnesium oxide supply device. The width of the grain-oriented silicon steel strip to be coated ranges from 600mm to 650mm, the viscosity of magnesium oxide ranges from 10s to 12s at the temperature of 25 DEG C, the strip passing rate ranges from 15m/min to 25m/min, and the coating quantity of magnesium oxide ranges from 4g/m2 to 8g/m2. Continuity and stability of the magnesium oxide supply device can be guaranteed, the problem of uneven coating is solved, the grain-oriented silicon steel strips can be coated uniformly by the method, and the percent of pass is high.
Description
Technical field
The present invention relates to a kind of coating process of oriented silicon steel band surface oxidation magnesium, be applied to the coating of oriented silicon steel band surface oxidation magnesium, function of dominant property technical field of magnetic materials.
Background technology
Oriented silicon steel band is a kind of novel functional magnetic material, because its resistance is big, so in the running, the electric energy that consumes on the iron core is little; Because its magnetization has strong directionality, so the magnetic strength on the required direction is high; The utilization rate of iron core is high, and operational efficiency is high, and the cold-rolled orientation silicon steel band is the topmost core material of most critical in the electromagnetic oriented conversion products such as transformer, transformer; The production technology level of cold-rolled orientation silicon steel band; Be directly connected to the upgrading of a large amount of transformers of country, be directly connected to the utilization ratio of national energy, the sustainable development and the people's lives of it and national economy are closely bound up.Disclose according to electrical sheet branch of Chinese Metals Society " 2010 Chinese electrical sheet industry development annual report "; Domestic 78.6 ten thousand tons of the oriented silicon steel bands that consume altogether in 2010; Wherein import is 23.6 ten thousand tons; Import accounts for 30% of domestic total flow, and the cold-rolled orientation silicon steel band is the product that national longtime policy is helped.Cold-rolled orientation silicon steel band complex manufacturing, parameter window is narrow, the operation process is long, with high content of technology and be described as the handicraft in the steel products.
The magnesian purpose of oriented silicon steel band surfaces coated is to prevent that the rolling oriented silicon steel band is in follow-up high temperature (1180 ℃) annealing operation; Inter-adhesive between steel band; In addition; Also in follow-up high annealing operation, make in the magnesia (MgO) that is coated in steel strip surface and the front operation at the established silica (SiO of steel strip surface
2) be reflected at steel strip surface and generate magnesium silicate (Mg
2SiO
4) bottom, thereby the interface resistance of raising orientation silicon steel finished product.
Achieve the above object, the coating weight of oriented silicon steel band surface oxidation magnesium will reach requirement, is generally every 4-8g/m
2, and coating wants evenly, and this just needs the supply of magnesia masking liquid to want continuously with stable.
The supply of magnesia masking liquid is sprayed onto with jet pipe usually and is coated with on the roller, vertically opens a round on the jet pipe, and the size in hole, spacing are confirmed according to the required magnesian liquid measure that is coated with.
The above-mentioned jet pipe of vertically opening a round, in use, usually the oxidized magnesium in hole is stifled more little more, does not have until stifled.Because; The flow velocity of magnesia masking liquid in jet pipe is inconsistent; Magnesia is coated with the slow or static place of flow velocity in the jet pipe, and magnesia can constantly precipitate and gather, and it is fewer and feweri to cause jet pipe to attend the magnesia masking liquid that sprays in institute's perforate; The hole of on jet pipe, being opened is all blocked, and production can't be carried out.
Summary of the invention
The present invention provides a kind of coating process of oriented silicon steel band surface oxidation magnesium, solves magnesia out-of-flatness, the problem of non-uniform of existing oriented silicon steel band surface coated, and the magnesia supply arrangement is difficult for stopping up, and continous-stable improves the quality of products.
The present invention realizes through following technical scheme:
A kind of coating process of oriented silicon steel band surface oxidation magnesium is coated with magnesian oriented silicon steel band to be sprayed between the roller through two, adopts the magnesia supply arrangement to spray, wherein:
Orientation silicon steel bandwidth to be sprayed is 600mm～650mm;
Magnesian viscosity (25 ℃) 10～12s;
Through belt speed 15～25m/min;
Magnesian coating weight is 4～8g/m
2
Said magnesia supply arrangement is a stainless steel cold-drawn jet pipe, and diameter is 60mm, and thickness is 2.0mm.
Said magnesia is heavy-burned magnesia.
A slit is set on the said spout body, and the length of said slit is than the wide 150mm～200mm of the bandwidth of oriented silicon steel band to be sprayed, and the seam of slit is wide to be 2.5～3mm.
Beneficial effect of the present invention is:
1, coating back product quality is high, and surface oxidation magnesium is even, smooth, and outward appearance is clean and tidy;
2, the magnesia supply arrangement does not stop up, and is easy to maintenance, can continuously, stably spray magnesia.
Description of drawings
Fig. 1 is that oriented silicon steel band is coated with magnesian process equipment figure
Fig. 2 is the main TV structure sketch map of stainless steel cold-drawn jet pipe
Fig. 3 is the side-looking structural representation of stainless steel cold-drawn jet pipe
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further specified.
Like Fig. 1; Be that oriented silicon steel band is coated with magnesian process equipment figure; Magnesian oriented silicon steel band 2 to be sprayed is coated with between roller 101 and 102 through two; Stainless steel cold-drawn jet pipe 3 is separately positioned on the two sides of oriented silicon steel band 2, is coated with roller 101 and 102 near two, before oriented silicon steel band 2 is gone into roller, sprays continuously.
Like Fig. 2 and Fig. 3; The master who is stainless steel cold-drawn jet pipe respectively looks and the side-looking structural representation; On stainless steel cold-drawn jet pipe 3 bodies slit 301 is set, the length of slit is than the wide 150mm～200mm of the bandwidth of oriented silicon steel band to be sprayed, and the seam of slit is wide to be 2.5～3mm.
Below in conjunction with embodiment, the present invention is further specified.
Embodiment 1
Adopt following technology and structural parameters:
1. the width of the magnesian oriented silicon steel band that is coated with is 650mm;
2. be coated with magnesian viscosity (25 ℃) 11s;
3. used magnesian quality is a heavy-burned magnesia;
4. belt speed is 15m/min;
5. being coated with magnesian coating weight is 6g/m
2
6. the material of feed flow jet pipe is 1Cr18Ni9;
7. the specification of stainless steel cold-drawn jet pipe is ￠ 60 * 2.0mm;
8. on the stainless steel cold-drawn jet pipe slit is set.
9. the length of slit is than the wide 150mm of going out of bandwidth of the magnesian oriented silicon steel band that is coated with.
10. the seam of slit is wide is 2.5mm.
Adopt following technology and structural parameters:
1. the width of the magnesian oriented silicon steel band that is coated with is 600mm;
2. be coated with magnesian viscosity (25 ℃) 12s;
3. used magnesian quality is a heavy-burned magnesia;
4. belt speed is 25m/min;
5. being coated with magnesian coating weight is 8g/m
2
6. the material of feed flow jet pipe is 1Cr17Ni9;
7. the specification of stainless steel cold-drawn jet pipe is ￠ 60 * 2.0mm;
8. on the stainless steel cold-drawn jet pipe slit is set.
9. the length of slit is than the wide 200mm of going out of bandwidth of the magnesian oriented silicon steel band that is coated with.
10. the seam of slit is wide is 2.8mm.
Adopt following technology and structural parameters:
1. the width of the magnesian oriented silicon steel band that is coated with is 620mm;
2. be coated with magnesian viscosity (25 ℃) 10s;
3. used magnesian quality is a heavy-burned magnesia;
4. belt speed is 20m/min;
5. being coated with magnesian coating weight is 5g/m
2
6. the material of feed flow jet pipe is 1Cr18Ni9;
7. the specification of stainless steel cold-drawn jet pipe is ￠ 60 * 2.0mm;
8. on the stainless steel cold-drawn jet pipe slit is set.
9. the length of slit is than the wide 180mm of going out of bandwidth of the magnesian oriented silicon steel band that is coated with.
10. the seam of slit is wide is 3.0mm.
Claims (4)
1. the coating process of an oriented silicon steel band surface oxidation magnesium is coated with magnesian oriented silicon steel band to be sprayed between the roller through two, adopts the magnesia supply arrangement to spray, and it is characterized in that wherein:
Orientation silicon steel bandwidth to be sprayed is 600mm～650mm;
Magnesian viscosity (25 ℃) 10～12s;
Through belt speed 15～25m/min;
Magnesian coating weight is 4～8g/m
2
2. the coating process of a kind of oriented silicon steel band surface oxidation magnesium as claimed in claim 1 is characterized in that said magnesia supply arrangement is a stainless steel cold-drawn jet pipe, and diameter is 60mm, and thickness is 2.0mm.
3. the coating process of a kind of oriented silicon steel band surface oxidation magnesium as claimed in claim 1 is characterized in that said magnesia is heavy-burned magnesia.
4. the coating process of a kind of oriented silicon steel band surface oxidation magnesium as claimed in claim 1; It is characterized in that being provided with on the said spout body slit; The length of said slit is than the wide 150mm～200mm of the bandwidth of oriented silicon steel band to be sprayed, and the seam of slit is wide to be 2.5～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210001295.5A CN102553796B (en) | 2012-01-04 | 2012-01-04 | Method for coating magnesium oxide on surfaces of grain-oriented silicon steel strips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210001295.5A CN102553796B (en) | 2012-01-04 | 2012-01-04 | Method for coating magnesium oxide on surfaces of grain-oriented silicon steel strips |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102553796A true CN102553796A (en) | 2012-07-11 |
| CN102553796B CN102553796B (en) | 2014-07-02 |
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ID=46401174
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210001295.5A Active CN102553796B (en) | 2012-01-04 | 2012-01-04 | Method for coating magnesium oxide on surfaces of grain-oriented silicon steel strips |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109055920A (en) * | 2018-08-31 | 2018-12-21 | 北京曙光航空电气有限责任公司 | A kind of preparation and application of magnesia film masking liquid |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4344802A (en) * | 1977-08-04 | 1982-08-17 | Armco Inc. | Stable slurry of inactive magnesia and method therefor |
| JPH059564A (en) * | 1991-06-28 | 1993-01-19 | Kawasaki Steel Corp | Method for coating grain-oriented silicon steel strip with separation agent for annealing and apparatus therefor |
| CN101209440A (en) * | 2006-12-27 | 2008-07-02 | 鞍钢股份有限公司 | Coating method of cold-rolled silicon steel chromium-free insulating coating, coating rubber roll and coating liquid |
| CN102286659A (en) * | 2011-03-24 | 2011-12-21 | 北京中钢贸科技发展有限公司 | Method for improving magnetic properties of cold rolling non-oriented silicon steel |
-
2012
- 2012-01-04 CN CN201210001295.5A patent/CN102553796B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4344802A (en) * | 1977-08-04 | 1982-08-17 | Armco Inc. | Stable slurry of inactive magnesia and method therefor |
| JPH059564A (en) * | 1991-06-28 | 1993-01-19 | Kawasaki Steel Corp | Method for coating grain-oriented silicon steel strip with separation agent for annealing and apparatus therefor |
| CN101209440A (en) * | 2006-12-27 | 2008-07-02 | 鞍钢股份有限公司 | Coating method of cold-rolled silicon steel chromium-free insulating coating, coating rubber roll and coating liquid |
| CN102286659A (en) * | 2011-03-24 | 2011-12-21 | 北京中钢贸科技发展有限公司 | Method for improving magnetic properties of cold rolling non-oriented silicon steel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109055920A (en) * | 2018-08-31 | 2018-12-21 | 北京曙光航空电气有限责任公司 | A kind of preparation and application of magnesia film masking liquid |
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|---|---|
| CN102553796B (en) | 2014-07-02 |
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Address after: 214151, Jiangsu Huishan Wuxi Economic Development Zone Qian Qiao supporting area (Creek Village) Applicant after: WUXI HUAJING NEW MATERIAL Co.,Ltd. Address before: 214400, Jiangsu Huishan Wuxi Economic Development Zone Qian Qiao supporting area (Creek Village) Applicant before: Wuxi Huajin New Material Co.,Ltd. |
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Denomination of invention: A coating method of magnesium oxide on the surface of oriented silicon steel strip Effective date of registration: 20230315 Granted publication date: 20140702 Pledgee: Agricultural Bank of China Limited by Share Ltd. Wuxi Huishan branch Pledgor: WUXI HUAJING NEW MATERIAL Co.,Ltd. Registration number: Y2023980034890 |