CN104451068B - Oriented silicon steel strip with stripes and production method thereof - Google Patents
Oriented silicon steel strip with stripes and production method thereof Download PDFInfo
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- CN104451068B CN104451068B CN201310422636.0A CN201310422636A CN104451068B CN 104451068 B CN104451068 B CN 104451068B CN 201310422636 A CN201310422636 A CN 201310422636A CN 104451068 B CN104451068 B CN 104451068B
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Abstract
The present invention relates to an oriented silicon steel strip with stripes and a production method thereof. The production method comprises: adopting a conventional production method to obtain an oriented silicon steel decarburization annealing steel strip; adopting a roll coating or spray coating method to coat a separation agent on the decarburization annealing steel strip, such that the coated pattern of the separation agent and the steel strip length direction present the angle alpha, wherein the angle alpha is more than or equal to 10 DEG and is less than or equal to 90 DEG or the angle alpha is more than or equal to -90 DEG and is less than or equal to -10 DEG, preferably the angle alpha is more than or equal to 30 DEG and is less than or equal to 90 DEG or the angle alpha is more than or equal to -90 DEG and is less than or equal to -30 DEG, the width of the coated pattern is 0.5-10 mm, and the height difference between the deep position and the shallow position of the coated pattern is 0.1-3 mm; and carrying out high temperature annealing, coating of an insulating coating and hot stretching annealing to obtain the oriented silicon steel finished product with stripes. According to the present invention, with the separation agent for forming the coated pattern on the steel strip surface, the air permeability of the steel coil during the high temperature annealing can be improved, the water vapor in the high temperature annealing coil can be rapidly discharged, the defective product reduction rate that the bottom layer defects, wrinkles and edge waves and other defects are reduced is improved, and the bottom layer color difference and the finished product strips color difference are significantly improved, such that the product quality of the oriented silicon steel can be increased under the premise of no significant increase of the cost.
Description
Technical field
The present invention relates to a kind of oriented silicon steel band and its production method.
Background technology
In general, the basic chemical composition of orientation silicon steel is si (2.5～4.0%), c (0.01～0.10%), mn
(0.01～0.1%), s (0.005～0.050%), als (0.005～0.05%), n (0.003～0.012%), some compositions
System also contains the elements such as cu, mo, sb, cr, b, bi, and remaining is ferrum and inevitable impurity element.
The common manufacture process of orientation silicon steel is as follows: uses converter or electric furnace steel making first, through double refining and alloying, connects
Cast slab；Then by heating of plate blank and be incubated, make the partially or substantially solid solution of favourable field trash；Then carry out hot rolling, laminar flow is cold
But batch afterwards；After Hot Rolled Plate Normalizing or not normalizing pickling, then hot rolled plate is cold rolled to decarburizing annealing or decarburization after finished product thickness oozes
N2 annealing, the c in steel plate is taken off not to be affected the degree of finished product magnetic property and for example typically in below 30ppm, and should apply coated with mgo
Annealing separating agent for main component；Carry out high annealing again, in high-temperature annealing process, steel plate occurs secondary recrystallization, shape
Become magnesium silicate bottom and complete purified treatment and remove the element that s, n in steel etc. are harmful to magnetic property, obtain that the degree of orientation is high, ferrum
Damage low high magnetic induction grain-oriented silicon steel；Eventually pass coating insulating coating and stretching annealing, obtain the oriented silicon of business application form
Product made from steel.Laser scored or mechanical score can also be carried out for high magnetic induction grain-oriented silicon steel to refine magnetic domain.
The purpose of wherein coating annealing separating agent mgo is: (1) prevents from boning in high annealing between steel band；(2) high temperature moves back
When fire is raised to about 1100 DEG C, mgo and steel strip surface sio2Oxide-film chemically reactive (2mgo+sio2→mg2sio4), form silicon
Sour magnesium bottom, promotes desulfurization and denitrification reaction during high temperature purification annealing.Mgo coating and decarburizing annealing are generally in same lines
On complete, after coating mgo, coil of strip is overturn as vertical by horizontal, as shown in figure 1, reinstalling (annular) bell furnace, to carry out high temperature net
Annealing.Mgo coating procedure includes joining liquid, stirring, coating, drying etc., and oriented silicon steel quality is had a major impact, improper
Operation can make mg in coating (oh)2Content increases.This water of constitution can not be discharged in coated and dried, brings height into mgo coating
In warm annealing furnace, the bottom defect (dew brilliant and the Frost's Descent) of final products, bottom variable color can be led to, the wave is high on side, coil of strip partial drape
And magnetic property is bad.Therefore, the early stage in high annealing effectively discharges the water of constitution in coil of strip, the product quality to orientation silicon steel
Most important.
Invention entitled " a kind of method that low-temperature heat with good bottom produces orientation silicon steel ", Publication No.
The Chinese patent application of cn100455702c (publication date be on January 28th, 2009), disclose a kind of be obtained in that have good
The orientation silicon steel of glass film bottom and excellent magnetic energy and its production method.The method specifically includes that will use usual technique productions
Directional silicon steel slab heat at less than 1280 DEG C, then hot rolling, carry out once or secondary cold-rolling obtains finished product thickness of slab, so
First carry out Nitrizing Treatment afterwards, rear decarburizing annealing, coating interleaving agent, finally carry out final high annealing, wherein, in Nitrizing Treatment
In, bringing-up section dew point controls at -15 DEG C～-40 DEG C.Its advantage shows themselves in that nitriding efficiency high, and steel plate nitriding does not have surface
The impact of oxide-film；Excellent mgo coating formula, makes magnesium silicate bottom be formed excellent, uniform, obtains good magnetic property.
(publication date is for invention entitled " manufacture method of grain-oriented silicon steel plate with mirror surface ", Publication No. cn100336916c
On September 12nd, 2007) Chinese patent application disclose a kind of grain-oriented silicon steel plate with mirror surface coating annealing separation agent with water slurry shape
Manufacture method, wherein coating is dried with al2o3It is controlled to 1.5% as the water quantities of bringing into after the annealing separation agent of main constituent
Or less than 1.5%, control the steam partial pressure of the atmosphere gas of finished products simultaneously, eliminate the inhibitor resulting from interface anti-
The fluctuation of the secondary recrystallization answered, makes magnetic characteristic stabilisation.
Invention entitled " a kind of painting method of magnesium oxide on surfaces of grain-oriented silicon steel strips ", Publication No. cn102553796 are (public
Open day be on July 11st, 2012) Chinese patent application disclose a kind of painting method of magnesium oxide on surfaces of grain-oriented silicon steel strips, will
The oriented silicon steel band of magnesium oxide to be sprayed passes through, between two paint rollers, to be sprayed using magnesium oxide supply arrangement, wherein: to be sprayed
Orientation silicon steel bandwidth be 600mm～650mm, viscosity (25 DEG C) 10～12s of magnesium oxide, by belt speed 15～25m/min,
The coated weight of magnesium oxide is 4～8g/m2.
In order to control the chemical combination water yield in coil of strip during high annealing, the measure being usually taken in production has: increases baking work(
Rate, to reduce coil of strip and enter the moisture content in the interleaving agent before (annular) bell furnace such as mgo；Extend the minimum living temperature of high annealing early stage
Time, to increase time of steam discharge etc..But the effect of above-mentioned measure is limited, even if one is to increase baking power, interleaving agent
Moisture content be also only capable of being down to about 1.5%～2.0%, two is that the steam of inner ring of steel coil is difficult to because coating volume inter-laminar tension is big
Quick discharge；Three is that above-mentioned measure can dramatically increase production cost.
Content of the invention
It is an object of the invention to provide a kind of oriented silicon steel band and its production method, separant coating steel can be effectively discharged out
Steam in volume, with the second best in quality oriented silicon steel of stable acquisition.
A kind of scored oriented silicon steel band is provided according to an aspect of the present invention, wherein:
Method using roller coat or spraying coats interleaving agent on decarburizing annealing steel band, makes interleaving agent apply stricture of vagina and steel band length
Direction becomes α angle, wherein, 10 °≤α≤90 ° or -90 °≤α≤- 10 °；
Obtain after high annealing, coating insulating coating and hot drawing annealing and carry streaky oriented silicon steel band.
It is preferred that 30 °≤α≤90 ° or -90 °≤α≤- 30 °.
There is provided a kind of production method of above-mentioned striped oriented silicon steel band according to a further aspect of the invention, it includes walking as follows
Rapid:
Orientation silicon steel decarburizing annealing steel band is obtained using conventional production process；
Method using roller coat or spraying coats interleaving agent on decarburizing annealing steel band, makes interleaving agent apply stricture of vagina and steel band length
Direction is in α angle, and this α angle is 10 °≤α≤90 ° or -90 °≤α≤- 10 °；
Obtain after high annealing, coating insulating coating and hot drawing annealing and carry streaky orientation silicon steel finished product.
In one embodiment, described roller coat is to become 90- α angle on roll surface with roller length direction using a kind of groove depth centrage
The grooved roller of degree is coated.
It is preferred that 30 °≤α≤90 ° or -90 °≤α≤- 30 °.
The described width applying stricture of vagina is 0.5～10mm；The difference in height applying stricture of vagina depth position is 0.1～3mm.
Described interleaving agent is the interleaving agent using mgo as main constituent.
Described interleaving agent is with al2o3Interleaving agent as main constituent.
The invention has the beneficial effects as follows: by forming the interleaving agent applying stricture of vagina, steel when can improve high annealing in steel strip surface
The breathability of volume, the steam in making high annealing roll up quickly is discharged, and reduces the fall time of the defects such as bottom defect, fold and Bian Lang
Rate, bottom aberration and finished product striped aberration also be improved significantly.Therefore, can improve on the premise of inconspicuous increase cost and take
Product quality to silicon steel.
Brief description
Fig. 1 is that existing oriented silicon steel band vertical steel coils interleaving agent applies stricture of vagina schematic diagram；
Fig. 2 is the light striped schematic diagram of the scored orientation silicon steel belt surface of one embodiment of the invention；
Fig. 3 is a kind of coating isolation of being adopted of scored oriented silicon steel band production method of one embodiment of the invention
The grooved roller of agent striped launches floor map；
Fig. 4 is that the scored oriented silicon steel band vertical steel coils interleaving agent of the present invention applies stricture of vagina schematic diagram.
Specific embodiment
It is that the above objects, features and advantages of the present invention can be become apparent, below in conjunction with the tool to the present invention for the accompanying drawing
Body embodiment elaborates.Firstly the need of explanation, the present invention is not limited to following specific embodiments, this area
The spirit that technical staff should be embodied from following embodiments to understand the present invention, and each technical term can be based on the present invention's
Spirit is making broadest understanding.The same or analogous component of in figure uses the same reference numerals to represent.
Striped and the difference applying stricture of vagina in literary composition.Striped refers to, the striped on finished product steel belt surface；Apply stricture of vagina and refer to intermediate step
Mgo coats stricture of vagina.Mgo applies the striped that stricture of vagina develops into finished product steel belt eventually through high annealing reaction.
As shown in Figure 2 and Figure 4, a kind of scored oriented silicon steel band 2 ' of one embodiment of the invention, wherein:
Steel strip surface 2 ' is formed with the light striped 2b becoming α angle with steel band length direction maying be seen indistinctly, 10 °≤α≤
90 ° or -90 °≤α≤- 10 ° it is preferable that 30 °≤α≤90 ° or -90 °≤α≤- 30 °, the width of light striped 2b is 1～
20mm.
One kind of the present invention produces the production method of above-mentioned striped orientation silicon steel 2 ', comprises the steps:
Orientation silicon steel decarburizing annealing steel band is obtained using conventional production process；
Method using roller coat or spraying coats mgo interleaving agent on decarburizing annealing steel band, makes interleaving agent apply stricture of vagina 2a and steel
Strip length direction is in α angle, as shown in Figures 2 to 4.10 °≤α≤90 ° or -90 °≤α≤- 10 ° it is preferable that 30 °≤α≤
90 ° or -90 °≤α≤- 30 °.The width applying stricture of vagina 2a is 0.5～10mm；The difference in height applying stricture of vagina depth position is 0.1～3mm.
In one embodiment, as shown in figure 3, roller coat is to be realized using a kind of grooved roller 3, the groove depth 3b centrage 3a of grooved roller
Roll surface becomes 90- α angle with roller length direction f.
It is emphasized that in orientation silicon steel production process, the present invention is not limited to the isolation using mgo as main constituent
Agent, for al2o3Also there is similar beneficial effect Deng the interleaving agent for main constituent.
By forming the interleaving agent applying stricture of vagina 2a in steel strip surface 2 ', the steam in making high annealing roll up quickly is discharged, and reduces
The fall time rate of the defect such as bottom defect, fold and Bian Lang, bottom aberration and finished product striped aberration also be improved significantly.This is
Because applying, stricture of vagina 2a passage is logical with upper and lower end face 2c, 2d of coil of strip 2 to be passed through, as shown in figure 4, being conducive to the discharge of steam in coil of strip 2.
Further illustrate the features and advantages of the invention below in conjunction with concrete application example.
Example 1
Routinely production method obtains orientation silicon steel decarburizing annealing steel band, and from t type groove roller, groove depth h is 0.4mm, groove top
Wide m is 0.2mm, and bottom land width n is 0.2mm, and grooved angle beta is 45 °, and slot pitch p is 1mm, and groove depth centrage is rectangular with roller on roll surface
To at 45 °, the interleaving agent with mgo as main constituent for the roller coat, steel band is formed and is at an angle of 44 °～46 °, width with strip length direction
Spend for 0.5～2mm, the mgo that depth difference in height is about 0.3mm applies stricture of vagina, then carries out high annealing, eventually passes coating insulating coating
And hot drawing annealing, obtain the final orientation silicon steel finished product with oblique striped.43 °≤the α of stripe angle of finished surface≤
47 °, width of fringe is 1～3mm.Produce volume 86 using said method, end product quality (carries vertical bar with same period conventional products
Quality stricture of vagina, as shown in Figure 1) compares, and result is as shown in table 1:
Table 1
As can be seen that the product quality of example is substantially better than the conventional products with nicking.
Example 2
Routinely production method obtain orientation silicon steel decarburizing annealing steel band, from V-shaped grooved roller be coated with mgo be main constituent every
From agent, then carry out high annealing, eventually pass coating insulating coating and hot drawing annealing, obtain taking of 2 kinds of oblique stripeds of angle
To silicon steel finished product, width of fringe is 1～3mm, produces volume 53 and volume 86 respectively.A kind of stripe angle 47 °≤α of finished surface
≤ 53 °, another kind of stripe angle for finished surface is 13 °≤α≤19 °, the quality of two kinds of products is compared, result
As indicated with 2:
Table 2
As can be seen that the corresponding product quality of the preferential angle of example is more excellent.
Example 3
Routinely production method obtains orientation silicon steel decarburizing annealing steel band, using from t type groove roller, the groove depth center of grooved roller
Line becomes 0 ° with roller length direction on roll surface, applies coated with al2o3For the interleaving agent of main constituent, steel band is formed and strip length side
To angled 90 °, width be 0.5～2mm, depth difference in height is the horizontal al of 0.3mm2o3Striped, then carry out high annealing,
Afterwards through coating insulating coating and hot drawing annealing, obtain the mirror surface-oriented silicon steel that a kind of thickness is 0.26mm.Final products matter
Amount and same period routine minute surface product (vertical al2o3Apply stricture of vagina) quality compare, result is as shown in table 3:
Table 3
As can be seen that the corresponding magnetic property of example is more excellent.
In sum, the present invention provides a kind of scored oriented silicon steel band and its production method, can be in inconspicuous increase
On the premise of cost, apply the angle in stricture of vagina and strip length direction by adjusting interleaving agent, improve the ventilative of coil of strip during high annealing
Property, promote effective discharge of steam in coil of strip, thus improving the product quality of orientation silicon steel.
It should be understood that after the above-mentioned teachings having read the present invention, those skilled in the art can make to the present invention
Various changes or modification, these equivalent form of values equally fall within the application appended claims limited range.
Claims (8)
1. a kind of scored oriented silicon steel band it is characterised in that:
Method using roller coat or spraying coats interleaving agent on decarburizing annealing steel band, makes interleaving agent apply stricture of vagina and steel band length direction
Become α angle, wherein, 10 °≤α≤90 ° or -90 °≤α≤- 10 °；
Obtain after high annealing, coating insulating coating and hot drawing annealing and carry streaky oriented silicon steel band.
2. scored oriented silicon steel band according to claim 1 it is characterised in that described α angle be 30 °≤α≤
90 ° or -90 °≤α≤- 30 °.
3. a kind of production method of striped oriented silicon steel band is it is characterised in that comprise the steps:
Orientation silicon steel decarburizing annealing steel band is obtained using conventional production process；
Method using roller coat or spraying coats interleaving agent on decarburizing annealing steel band, makes interleaving agent apply stricture of vagina and steel band length direction
In α angle, this α angle is 10 °≤α≤90 ° or -90 °≤α≤- 10 °；
Obtain after high annealing, coating insulating coating and hot drawing annealing and carry streaky orientation silicon steel finished product.
4. the production method of striped oriented silicon steel band according to claim 3 is it is characterised in that described roller coat is to adopt
A kind of groove depth centrage becomes the grooved roller of 90- α angle to be coated on roll surface with roller length direction.
5. the production method of the striped oriented silicon steel band according to claim 3 or 4 is it is characterised in that wherein 30 °≤α
≤ 90 ° or -90 °≤α≤- 30 °.
6. the production method of the striped oriented silicon steel band according to claim 3 or 4 is it is characterised in that described painting stricture of vagina
Width is 0.5～10mm；The difference in height applying stricture of vagina depth position is 0.1～3mm.
7. striped oriented silicon steel band according to claim 3 production method it is characterised in that described interleaving agent be with
Mgo is as the interleaving agent of main constituent.
8. striped oriented silicon steel band according to claim 3 production method it is characterised in that described interleaving agent be with
al2o3Interleaving agent as main constituent.
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| CN113211325B (en) * | 2021-05-07 | 2022-07-12 | 包头市威丰稀土电磁材料股份有限公司 | Method for preparing non-bottom-layer raw material of oriented silicon steel thin strip in physical sand blasting mode |
| CN113862447B (en) * | 2021-09-15 | 2023-04-18 | 首钢智新迁安电磁材料有限公司 | Method, device, equipment and storage medium for controlling edge waves of oriented silicon steel |
| CN114507768B (en) * | 2022-02-22 | 2023-11-24 | 武汉钢铁有限公司 | Method for improving edge wave shape of oriented silicon steel |
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| JPS5953684B2 (en) * | 1979-12-12 | 1984-12-26 | 新日本製鐵株式会社 | Method for improving iron loss in magnetic steel sheet coils |
| JPH0635643B2 (en) * | 1986-05-16 | 1994-05-11 | 日本鋼管株式会社 | High silicon iron plate with excellent soft magnetic properties |
| JPH0660351B2 (en) * | 1988-03-25 | 1994-08-10 | 住友金属工業株式会社 | Heat treatment method for steel strip |
| JP3878335B2 (en) * | 1998-07-23 | 2007-02-07 | 新日本製鐵株式会社 | Method and apparatus for applying annealing separator to grain-oriented silicon steel sheet |
| CN102031342B (en) * | 2009-09-30 | 2013-01-09 | 鞍钢股份有限公司 | Preparation method of high magnetic induction oriented silicon steel for refining secondary grain size |
| CN102407210B (en) * | 2010-09-21 | 2013-10-16 | 鞍钢股份有限公司 | Method and device for controlling medium and small sized oriented silicon steel decarburizing annealing line MgO coating |
| CN102825523B (en) * | 2012-09-04 | 2016-01-20 | 马钢(集团)控股有限公司 | A kind of electrical steel dope coating roller patterning apparatus and application patterning apparatus carry out the process of cutting |
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