CN109807192A - The method for controlling high magnetic induction grain-oriented silicon steel volume flange - Google Patents
The method for controlling high magnetic induction grain-oriented silicon steel volume flange Download PDFInfo
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- CN109807192A CN109807192A CN201910090974.6A CN201910090974A CN109807192A CN 109807192 A CN109807192 A CN 109807192A CN 201910090974 A CN201910090974 A CN 201910090974A CN 109807192 A CN109807192 A CN 109807192A
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Abstract
The invention discloses a kind of methods of control high magnetic induction grain-oriented silicon steel volume flange; this method shears the big process of subpackage nine by normalizing cooling, rolling, trimming, rewinding, continuous annealing, high annealing, stretching annealing, laser scored and finishing and high magnetic induction grain-oriented silicon steel volume is prepared, and controls its flange；The method of the present invention is carried out at the scene using the high temperature HIB flange amount of 0.18~0.3mm series is decreased obviously.The present invention significantly reduces the generation of flange by the implementation of countermeasuress, and lumber recovery improves 0.5%.
Description
Technical field
The present invention relates to orientation silicon steel manufacturing fields, and in particular to a kind of side of control high magnetic induction grain-oriented silicon steel volume flange
Method.
Background technique
High magnetic induction grain-oriented silicon steel is important electrician's soft magnetic materials and is mainly used in large-scale power transformer and energy-efficient
Become the manufacture of iron core.It is important scarce to perplex normally producing for orientation silicon steel always for " flange " defect in orientation silicon steel production process
It falls into.The defect shows themselves in that after high annealing since thermal stress effect makes strip deformation, swells in width direction, bump height h can
Up to 30mm (as shown in Figure 1), therefore smooth stretching annealing need to be carried out.Generally at about 860 DEG C through 0.25%~0.75% elongation
Stretching annealing steel band can be made smooth.Since steel band is smooth after annealing, plate deformation is good, and edge burr makees influence when batching
With increase.If edge burr is larger, reach 30 μ or so, when stretching and leveling (CT) is batched due to edge burr superposition,
Cause edge raised, under coiling tension effect, fried side and breach occurs in edge.Stretching and leveling operator can only be using manual
Control EPC misalignment 10mm is batched.
After stretching and leveling annealing is batched, in finishing cutting edge, there are side waves to become larger；At this time at circle shear chute by
Steel-fastening is be easy to cause in the wave is high on side, operative employee handles useless power when steel-fastening is useless, but also there are security risks.Due to finishing cutting edge
Most width is 60mm, and such coil of strip influences production capacity there is still a need for ruler processing is changed.
Finished product macrostructure is analyzed, display is characterized in that edge forms local fine grain band or secondary recrystallization development
Not perfect or crystallite dimension difference is larger.For this phenomenon, existing countermeasure is generally by adjustment high annealing
Technique, adjustment high-temperature annealing furnace combustion state, improve backplane type, with reduce as far as possible coil of strip in high-temperature annealing process it is cold,
Hot(test)-spot temperature is poor, so as to improve steel roll rim quality.However the technology realizes that difficulty is larger, adjustment risk is high, and cannot be complete
Complete solution is determined flange defect problem.
Summary of the invention
The present invention provides a kind of high magnetic strength of control and takes for haveing the defects that flange in present orientation silicon steel production process
To the method for silicon steel coil flange, for this method in the case where adjust repeatedly to high-temperature annealing process, the present invention passes through control
Relieving haperacidity controls unfitness of butt joint mode when controlling flash amount, continuous annealing when washing cooling, heavy pruning side, controls to orientation silicon steel flange
System.
To achieve the goals above, a kind of method of control high magnetic induction grain-oriented silicon steel volume flange, the party designed by the present invention
Method passes through normalizing cooling, rolling, trimming, rewinding (coil of strip for needing to reprocess), continuous annealing, high annealing, stretching annealing, laser
High magnetic induction grain-oriented silicon steel volume is prepared in indentation (as needed) and the finishing shearing big process of subpackage nine, and controls its flange,
It is characterized in that:
1) normalizing is cooling: along steel band traffic direction, using the uniform Cooling Control Technology of normalizing, at symmetrical point up and down of steel band
It is furnished with jet pipe and lower jet pipe, and guarantees that ejection medium cover width direction distance is 1.05m~1.2m, upper jet pipe and lower jet pipe
It is arranged with nozzle, wherein injection pressure is 0.3Mpa~0.4Mpa, and cooling medium dosage is 40m3/ h~60m3/h；
2) roll: after CP unit normalizing annealing, need mill by hot rolled plate be rolled into a thickness of
The flat cold-rolled sheet of 0.08mm~0.30mm, in the operation of rolling, 1 passage target flatness curve edge controlling value is 10I~15I value,
Keep wide cut rolling；Strip Shape Control use quadratic term control technique, realize wide cut slack list roll, it is ensured that wave degree 2% hereinafter,
Wave number is in 6/meter, and wave height 3mm is hereinafter, avoid rolling from generating breach；
3) trimming: it is unilateral to there is side to split the >=coil of strip of 5mm after the operation of rolling, using the unilateral trimming of coil of strip；Step rule
Keep away the burr control difficulty when trimming of coil of strip both sides；
4) rewinding: when the side of bilateral presence >=5mm is split, according to the 10% setting cutting edge overlap joint for being no more than plate thickness when cutting edge
Amount, and control with a thickness of the burr remnants after the high magnetic induction grain-oriented silicon steel cutting edge of 0.18mm~0.30mm series in 20 μ or less；
5) continuous annealing: when continuous annealing is batched, unfitness of butt joint is controlled according to 2mm.If local unfitness of butt joint is more than mark
Standard will cause when clamp carries out lifting job and hit side；It can not be eliminated when hitting side after high annealing.Then annealing is being stretched
Protrusion can be formed hitting side position when being batched, form flange.
Further, in the step 1), 13 nozzles are disposed on upper jet pipe, lower jet pipe is disposed with 14 each nozzles,
4 nozzle metered flows of both sides end are smaller than the metered flow of remaining nozzle by 50%~60% on every jet pipe.
Still further, in the step 1), the cooling water of injection is industrial filter water, physical and chemical index be pH:7.2~
8.2, SS:ave < 5.0mg/l, total hardness: 6.3~8.36dH.
Beneficial effects of the present invention:
1, method of the invention is carried out at the scene using the high temperature HIB flange amount of 0.18~0.3mm series is decreased obviously.
2, method of the invention significantly reduces the generation of flange by the implementation of countermeasuress, and lumber recovery improves
0.5%.
Detailed description of the invention
Fig. 1 is strip deformation schematic diagram after high annealing.
Specific embodiment
The present invention is described in further detail combined with specific embodiments below, so as to those skilled in the art understand that.
Embodiment 1
It is prepared using the method for control high magnetic induction grain-oriented silicon steel volume flange with a thickness of 0.27mm specification high magnetic induction grain-oriented silicon steel
Coil of strip A, this method pass through normalizing cooling, rolling, trimming, rewinding (coil of strip for needing to reprocess), continuous annealing, high annealing, drawing
Stretch annealing, laser scored (as needed) and the finishing shearing big process of subpackage nine is prepared high magnetic induction grain-oriented silicon steel volume A, and controls
Make its flange, in which:
1) normalizing is cooling: along steel band traffic direction, using the uniform Cooling Control Technology of normalizing, at symmetrical point up and down of steel band
It is furnished with jet pipe and lower jet pipe, and guarantees that ejection medium cover width direction distance is 1.05m~1.2m, upper jet pipe and lower jet pipe
It is arranged with nozzle, wherein be disposed with 13 nozzles on upper jet pipe, lower jet pipe is disposed with 14 each nozzles, two on every jet pipe
4 nozzle metered flows in side end portion are 8.5L/h, and other nozzle metered flows are 20L/h；Injection pressure be 0.3Mpa~
0.4Mpa, cooling medium dosage are 45m3/h；The cooling water of injection is industrial filter water, and physical and chemical index is pH:7.2~8.2,
SS:ave < 5.0mg/l, total hardness: 6.3~8.36dH；
2) it rolls: after CP unit normalizing annealing, needing to roll in mill with a thickness of the hot rolled plate of 2.3mm
Manufactured goods with a thickness of 0.08mm~0.30mm flat cold-rolled sheet, in the operation of rolling, 1 passage target flatness curve edge target control
10I, it is practical to control 12I, keep wide cut rolling；Strip Shape Control uses quadratic term control technique, realizes the rolling of wide cut slack list, it is ensured that
Wave degree is 2% hereinafter, wave number is in 6/meter, and wave height 3mm is hereinafter, avoid rolling from generating breach；Surveying A volumes of wave degree is
1.8%；
3) trimming: after the operation of rolling, A volumes splits without going out side, and to continue to verify, A, volume are had bad luck that CW unit is unilateral to be cut
Side, the step evade the burr control difficulty when trimming of coil of strip both sides；
4) rewinding: when cutting edge amount of lap is arranged in the step, A volumes of amount of lap is set as 0.02mm, surveys burr after A volumes of cutting edge
For 10 μ, less than 20 μ；
5) continuous annealing: staggered floor control is in 1mm when A volumes of continuous annealing CA unit batches；Prosecution is in CA unit to annular furnace unit
It wounds during handling without generating.
It verifies above-mentioned high magnetic induction grain-oriented silicon steel volume A and does not generate flange defect in CT unit excessively, control successfully, high magnetic strength takes
To silicon steel coil A be averaged silicon steel process lumber recovery be 87.5%, silicon steel coil A be averaged silicon steel process lumber recovery be 87.3%, be better than together
Phase coil of strip 86.4% is horizontal, and elimination is turned over all over defect, and high magnetic induction grain-oriented silicon steel lumber recovery can be improved.
Embodiment 2
It is prepared using the method for control high magnetic induction grain-oriented silicon steel volume flange with a thickness of 0.30mm specification high magnetic induction grain-oriented silicon steel
Coil of strip B, this method pass through normalizing cooling, rolling, trimming, rewinding (coil of strip for needing to reprocess), continuous annealing, high annealing, drawing
Stretch annealing, laser scored (as needed) and the finishing shearing big process of subpackage nine is prepared high magnetic induction grain-oriented silicon steel volume B, and controls
Make its flange, in which:
1) normalizing is cooling: along steel band traffic direction, using the uniform Cooling Control Technology of normalizing, at symmetrical point up and down of steel band
It is furnished with jet pipe and lower jet pipe, and guarantees that ejection medium cover width direction distance is 1.05m~1.2m, upper jet pipe and lower jet pipe
It is arranged with nozzle, wherein be disposed with 13 nozzles on upper jet pipe, lower jet pipe is disposed with 14 each nozzles, two on every jet pipe
4 nozzle metered flows in side end portion are 9L/h, and other nozzle metered flows are 20L/h；Injection pressure be 0.3Mpa~
0.4Mpa, cooling medium dosage are 55m3/h；The cooling water of injection is industrial filter water, and physical and chemical index is pH:7.2~8.2,
SS:ave < 5.0mg/l, total hardness: 6.3~8.36dH；
2) it rolls: after CP unit normalizing annealing, needing to roll in mill with a thickness of the hot rolled plate of 2.3mm
Manufactured goods with a thickness of 0.08mm~0.30mm flat cold-rolled sheet, in the operation of rolling, 1 passage target flatness curve edge target control
10I, it is practical to control 12I, keep wide cut rolling；Strip Shape Control uses quadratic term control technique, realizes the rolling of wide cut slack list, it is ensured that
Wave degree is 2% hereinafter, wave number is in 6/meter, and wave height 3mm is hereinafter, avoid rolling from generating breach；Surveying B volumes of wave degree is
1.65%；
3) trimming: after the operation of rolling, B volumes splits without going out side.To continue to verify, B volumes is had bad luck CW unit is unilateral to be cut
Side, the step evade the burr control difficulty when trimming of coil of strip both sides；
4) rewinding: when cutting edge amount of lap is arranged in the step, B volumes of amount of lap is set as 0.025mm.Hair after B volumes of cutting edge of actual measurement
Thorn is 16 μ, less than 20 μ；
5) continuous annealing: staggered floor control is in 1mm when B volumes of continuous annealing CA unit batches；Prosecution is in CA unit to annular furnace unit
It wounds during handling without generating.
It verifies above-mentioned high magnetic induction grain-oriented silicon steel volume B and does not generate flange defect in CT unit excessively, control successfully, high magnetic strength takes
To silicon steel coil B be averaged silicon steel process lumber recovery be 86.7%, silicon steel coil A be averaged silicon steel process lumber recovery be 86.2%, be better than
Same period coil of strip 85.8% is horizontal, and elimination is turned over all over defect, and high magnetic induction grain-oriented silicon steel lumber recovery can be improved.
Other unspecified parts are the prior art.Although above-described embodiment is made that the present invention and retouches in detail
State, but it is only a part of the embodiment of the present invention, rather than whole embodiments, people can also according to the present embodiment without
Other embodiments are obtained under the premise of creativeness, these embodiments belong to the scope of the present invention.
Claims (3)
1. a kind of method of control high magnetic induction grain-oriented silicon steel volume flange, this method pass through normalizing cooling, rolling, trimming, rewinding, company
High magnetic induction grain-oriented silicon steel is prepared in continuous annealing, high annealing, stretching annealing, the laser scored and finishing shearing big process of subpackage nine
Volume, and control its flange, it is characterised in that:
1) normalizing is cooling: being symmetrically distributed with up and down using the uniform Cooling Control Technology of normalizing in steel band along steel band traffic direction
Upper jet pipe and lower jet pipe, and guarantee that ejection medium cover width direction distance is 1.05m~1.2m, upper jet pipe and lower jet pipe are uniformly distributed
It is equipped with nozzle, wherein injection pressure is 0.3Mpa~0.4Mpa, and cooling medium dosage is 40m3/ h~60m3/h；
2) it rolls: after CP unit normalizing annealing, needing that hot rolled plate is rolled into a thickness of 0.08mm in mill
The flat cold-rolled sheet of~0.30mm, in the operation of rolling, 1 passage target flatness curve edge controlling value is 10I~15I value, keeps wide
Width rolling；Strip Shape Control uses quadratic term control technique, realizes the rolling of wide cut slack list, it is ensured that wave degree is 2% hereinafter, wave number
In 6/meter, wave height 3mm is hereinafter, avoid rolling from generating breach；
3) trimming: it is unilateral to there is side to split the >=coil of strip of 5mm after the operation of rolling, using the unilateral trimming of coil of strip；The step evades steel
Roll up the burr control difficulty when trimming of both sides；
4) rewinding: when the side of bilateral presence >=5mm is split, according to the 10% setting cutting edge amount of lap for being no more than plate thickness when cutting edge, and
And it controls with a thickness of the burr remnants after the high magnetic induction grain-oriented silicon steel cutting edge of 0.18mm~0.30mm series in 20 μ or less；
5) continuous annealing: when continuous annealing is batched, unfitness of butt joint is controlled according to 2mm.
2. the method for control high magnetic induction grain-oriented silicon steel volume flange according to claim 1, it is characterised in that: the step 1)
In, 13 nozzles are disposed on upper jet pipe, lower jet pipe is disposed with 14 each nozzles, 4 nozzles of both sides end on every jet pipe
Metered flow is smaller than the metered flow of remaining nozzle by 50%~60%.
3. the method for control high magnetic induction grain-oriented silicon steel volume flange according to claim 1, it is characterised in that: the step 1)
In, the cooling water of injection is industrial filter water, and physical and chemical index is pH:7.2~8.2, SS:ave < 5.0mg/l, total hardness: 6.3
~8.36dH.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910090974.6A CN109807192B (en) | 2019-01-30 | 2019-01-30 | Method for controlling flanging of high-magnetic-induction oriented silicon steel coil |
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| CN201910090974.6A CN109807192B (en) | 2019-01-30 | 2019-01-30 | Method for controlling flanging of high-magnetic-induction oriented silicon steel coil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113862447A (en) * | 2021-09-15 | 2021-12-31 | 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 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113862447A (en) * | 2021-09-15 | 2021-12-31 | 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 |
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