CN109706303A - A kind of quenched plate board-shape control method of thin gauge of side wave and middle wave mixing - Google Patents
A kind of quenched plate board-shape control method of thin gauge of side wave and middle wave mixing Download PDFInfo
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- CN109706303A CN109706303A CN201910006890.XA CN201910006890A CN109706303A CN 109706303 A CN109706303 A CN 109706303A CN 201910006890 A CN201910006890 A CN 201910006890A CN 109706303 A CN109706303 A CN 109706303A
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Abstract
The invention discloses a kind of quenched plate board-shape control methods of thin gauge of side wave and middle wave mixing, the board-shape control method matches setting by drafts that is light, weighing two kinds of differences+two kinds of different plastic rates of differentiation drafts in the width direction come the quenched plate plate shape of thin gauge of wave controls to the wave is high in light in Lang Huoqing during the wave is high, the quenched plate of thin gauge of the good side wave and middle wave mixing of production plate shape.
Description
Technical field
It is a kind of by two kinds of opposite cold strong strategies the present invention relates to a kind of quenched plate Strip Shape Control technology of thin gauge,
Realize the quenched plate Strip Shape Control of thin gauge to the wave is high in light in Lang Huoqing during the wave is high wave, more particularly to a kind of side wave and
The quenched plate board-shape control method of thin gauge of middle wave mixing.
Background technique
The quenched plate of thin gauge is limited and client's processing efficiency by following process condition in the increasingly harsher of use condition
The needs of promotion require to be increasingly stringenter to plate shape, at present major part engineering steel plate shape flatness requirements≤3mm/m；With this
Meanwhile the quenched plate of thin gauge is due to by width, thickness effect, if the slight wooden dipper of Quenching Sheet shape is bent, quenching apparatus precision not enough, water temperature
Variation causes existing quenching technical slightly to mismatch, and will cause thin gauge and occurs based on middle wave with slight side wave
(slight in wave unevenness≤8mm/2mm) or with while wave based on slight middle wave (wave unevenness≤8mm/ in slight
2mm), it is rectified according to conventional large deformation is cold, no matter takes the middle wave that first disappears, then the side wave that disappears, still first disappear side wave, then the middle wave that disappears,
It is cold rectify after can not often be effectively improved steel plate flatness, plate shape is often converted between middle wave or side wave, even if aligning arrives steel plate
Cracking is still unable to satisfy technical requirements.
Summary of the invention
The technical problem to be solved by the present invention is to the shortcomings that overcoming the prior art, provides a kind of side wave and middle wave mixing
The quenched plate board-shape control method of thin gauge, the board-shape control method by it is light, weigh two kinds of differences differentiation pressure in the width direction
The drafts of+two kinds of lower amount different plastic deformation ratios, which matches, to be arranged to realize.
In order to solve the above technical problems, the present invention provides a kind of quenched plate plate shape control of thin gauge of side wave and middle wave mixing
Method processed, the board-shape control method by it is light, weigh two kinds of differences+two kinds of different plastics of differentiation drafts in the width direction
The drafts of rate matches setting come the quenched plate plate shape of thin gauge of wave controls to the wave is high in light in Lang Huoqing during the wave is high,
Specific step is as follows:
1) for the wave is high in the light quenched plate of side wave thin gauge, slight sea straightness≤8mm/m, billow straightness≤30mm/m, root
According to armor plate strength, thickness, width and length, different drafts are set in the width direction, drafts is controlled in 0-12mm: straightening roll
Divide 7 sections equally, three sections of left and right is symmetrical, from edge to middle section, by edge segment value, edge segment value/1.786, edge segment value/5.56, in
Between segment value successively set, intermediate segment value be 0, wherein
The calculation formula of edge segment value Y specifically: Y=0.45-0.005X+0.0125X2, X is that every meter of wooden dipper of steel plate slight sea is bent maximum
Value；
Using 65-75% plastic deformation rate align 2 passages+using 55-65% plastic deformation rate align 2 passages, by steel plate flatness
Control is within 2mm/m；
Then further according to steel plate yield strength, thickness, width and length, it is once again set up different drafts in the width direction, depresses
Amount control is in 0-12mm: straightening roll divides 7 sections equally, and three sections of left and right is symmetrical, from centre to edge, by intermediate segment value, centre segment value/
1.786, intermediate segment value/5.56, edge segment value are successively set, and edge segment value is 0, wherein
The calculation formula of intermediate segment value Y specifically: Y=- 0.09+0.0521X+0.00234X2, X is that every meter of wooden dipper of steel plate is bent maximum
Value；
2 passage+55-65% plastic deformation rates are aligned using 75-85% plastic deformation rate and align 2 passages；
2) the quenched plate of unrestrained thin gauge, slight sea straightness≤8mm/m, billow straightness≤30mm/m, root during the wave is high for light side
According to steel plate yield strength, thickness, width and length, different drafts are set in the width direction, drafts is controlled in 0-12mm: being rectified
Directly roll out points 7 sections, three sections of left and right is symmetrical, from centre to edge, by intermediate segment value, centre segment value/1.786, centre segment value/
5.56, edge segment value is successively set, and edge segment value is 0, wherein
The calculation formula of intermediate segment value Y specifically: Y=0.45-0.005X+0.0125X2, X is that every meter of wooden dipper of steel plate slight sea is bent maximum
Value；
Using 65-75% plastic deformation rate align 2 passages+using 55-65% plastic deformation rate align 2 passages, by steel plate flatness
Control is within 2mm/m；
Then further according to steel plate yield strength, thickness, width and length, it is once again set up different drafts in the width direction, depresses
Amount control is in 0-12mm: straightening roll divides 7 sections equally, and three sections of left and right is symmetrical, from edge to middle section, by edge segment value, edge segment value/
1.786, edge segment value/5.56, intermediate segment value are successively set, and intermediate segment value is 0, wherein
The calculation formula of edge segment value Y specifically: Y=- 0.09+0.0521X+0.00234X2, X is that every meter of wooden dipper of steel plate is bent maximum
Value；2 passage+55-65% plastic deformation rates are aligned using 75-85% plastic deformation rate and align 2 passages.
The technical solution that the present invention further limits is:
Further, in the quenched plate board-shape control method of thin gauge of aforementioned side wave and middle wave mixing, in step (1) and (2), if
Being unable to judge accurately steel plate is which kind of is more serious for middle wave and side wave, first aligns 2+55%- using the plastic deformation rate of 75%-85%
65% plastic deformation rate aligning 2, then measures the different types of wooden dipper curvature value of steel plate again.
The beneficial effects of the present invention are: wave and the single the rate of plastic deformation of wooden dipper song thin specification steel plate of side wave mixing are made in solving
It is converted between middle wave and side wave at steel plate and rectifys uneven situation.
Mechanism of the invention is as follows:
1, the lesser side wave of steel plate wooden dipper curvature or middle wave, are aligned, it will wooden dipper curvature is smaller according to 75-85% plastic deformation rate
Middle wave or wave or middle wave when wave is converted into, further increase the relatively large side wave of wooden dipper curvature or middle unrestrained wooden dipper curvature, then benefit
It is aligned with 75-85% plastic deformation rate, while disappear middle unrestrained mode or side wave mode, original lesser side wave of wooden dipper curvature to have disappeared
Or middle wave can rebound again.
2, it is aligned, then only the plate shape that steel plate has side wave and middle wave to mix is converted into list using 65-75% plastic deformation rate
Unrestrained or unilateral wave, and then the wooden dipper curvature that will not dramatically increase the billow in superposition of wind wave and swell recycles as depicted in figs. 1 and 2
75-85% plastic deformation rate aligning, using the side wave and middle wave mode that disappears, rationally setting eliminates big-and-middle wave or side along width drafts
Wave, as shown in Figure 3.
The pressure that the present invention passes through double different+two kinds of different plastic rates of differentiation drafts in the width direction of light, weight
Lower amount matches setting to realize the quenched plate Strip Shape Control of thin gauge to the wave is high in light in Lang Huoqing during the wave is high wave, specific to walk
It is rapid as follows: to be set by moderate plasticity (65-75% deformation rate) and reasonable width, in the case where not dramatically increasing wooden dipper curvature
Will it is light in the wave is high in Lang Huoqing during the wave is high that wave plate shape is converted into single middle wave or side wave plate shape, then pass through big plasticity (75-
85% deformation rate) and reasonable width set-point, realize the quenched plate plate of thin gauge to the wave is high in light in Lang Huoqing during the wave is high wave
Shape control.
Detailed description of the invention
Fig. 1 is light side wave plate shape during the wave is high；
Side wave plate shape that Fig. 2 is that the wave is high in light；
Fig. 3 is the quenched plate of the cold strong good thin gauge of back plate shape of the embodiment of the present invention.
Specific embodiment
Embodiment 1
A kind of quenched plate board-shape control method of thin gauge of side wave and middle wave mixing provided in this embodiment, the board-shape control method
Matched setting by drafts that is light, weighing two kinds of differences+two kinds of different plastic rates of differentiation drafts in the width direction
Come to the wave is high in light in Lang Huoqing during the wave is high, the quenched plate plate shape of thin gauge of wave is controlled, the specific steps are as follows:
It 1) is 1180MP for yield strength, middle wave wooden dipper curvature measured value is up to 5mm/m and the unrestrained wooden dipper curvature measured value of side wave most
Greatly 20mm/m, specification 6mm*2600mm*1100mmNM450, it is maximum, 2 passages+adopt first are aligned using 69% plastic deformation rate
2 passages (totally 4 passage) is aligned with 58% plastic deformation rate, the different drafts that wherein straightening roll is arranged in the width direction are as follows:
0.87mm, 0.48 mm, 0.16 mm, 0 mm, 0.16 mm, 0.48 mm, 0.87 mm,
Then 2 passages (totally 4 passage) wherein straightening roll is aligned using 83% plastic deformation rate aligning+60% plastic deformation rate of 2 passage
The different drafts being arranged in the width direction are as follows: 0,0.34,1.06,1.88,1.06,0.34,0；
It 2) is 1180MP for yield strength, side wave wooden dipper curvature measured value is up to 5mm/m and middle unrestrained wooden dipper curvature measured value is maximum
For 20mm/m, specification 6mm*2600mm*1100mmNM450,2 passages+using 58% modeling are first aligned using 69% plastic deformation rate
Deformation form quotient align 2 passages (totally 4 passage), the different drafts that wherein straightening roll is arranged in the width direction are as follows: 0,0.16,
0.49,0.87,0.49,0.16,0；
Then again using 83% plastic deformation rate align 2 passages+using 58% plastic deformation rate aligning 2 passages (totally 4 passage), wherein
The different drafts that straightening roll is arranged in the width direction are as follows: 5.35,3.00,0.96,0,0.96,3.00,5.35.
In the present embodiment, in step (1) and (2), if being unable to judge accurately steel plate is which kind of is more serious for middle wave and side wave,
2+58% plastic deformation rate aligning 2 is first aligned using 83% plastic deformation rate, wherein straightening roll is arranged in the width direction
It is identical, the different types of wooden dipper curvature value of steel plate is then measured again.
The present invention passes through pressure that is light, weighing two kinds of differences+two kinds of different plastic rates of differentiation drafts in the width direction
Lower amount matches setting to realize to the quenched plate Strip Shape Control of thin gauge of the wave is high in light in Lang Huoqing during the wave is high wave, solves mixed
The uncontrollable problem of the quenched plate plate shape of the thin gauge of conjunction, can produce the good quenched plate of mixed thin gauge of plate shape in batches.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (2)
1. a kind of quenched plate board-shape control method of thin gauge of side wave and middle wave mixing, it is characterised in that: the board-shape control method
Matched setting by drafts that is light, weighing two kinds of differences+two kinds of different plastic rates of differentiation drafts in the width direction
Come to the wave is high in light in Lang Huoqing during the wave is high, the quenched plate plate shape of thin gauge of wave is controlled, the specific steps are as follows:
1) for the wave is high in the light quenched plate of side wave thin gauge, slight sea straightness≤8mm/m, billow straightness≤30mm/m, root
According to steel plate yield strength, thickness, width and length, different drafts are set in the width direction, drafts is controlled in 0-12mm: being rectified
Directly roll out points 7 sections, three sections of left and right symmetrically, from edge to middle section, by edge segment value, edge segment value/1.786, edge segment value/
5.56, intermediate segment value is successively set, and intermediate segment value is 0, wherein
The calculation formula of edge segment value Y specifically: Y=0.45-0.005X+0.0125X2, X is that every meter of wooden dipper of steel plate slight sea is bent maximum
Value；
Using 65-75% plastic deformation rate align 2 passages+using 55-65% plastic deformation rate align 2 passages, by steel plate flatness
Control is within 2mm/m；
Then further according to steel plate yield strength, thickness, width and length, it is once again set up different drafts in the width direction, depresses
Amount control is in 0-12mm: straightening roll divides 7 sections equally, and three sections of left and right is symmetrical, from centre to edge, by intermediate segment value, centre segment value/
1.786, intermediate segment value/5.56, edge segment value are successively set, and edge segment value is 0, wherein
The calculation formula of intermediate segment value Y specifically: Y=- 0.09+0.0521X+0.00234X2, X is every meter of wooden dipper song maximum value of steel plate；
2 passage+55-65% plastic deformation rates are aligned using 75-85% plastic deformation rate and align 2 passages；
2) the quenched plate of unrestrained thin gauge, slight sea straightness≤8mm/m, billow straightness≤30mm/m, root during the wave is high for light side
According to armor plate strength, thickness, width and length, different drafts are set in the width direction, drafts is controlled in 0-12mm: straightening roll
Divide 7 sections equally, three sections of left and right is symmetrical, from centre to edge, by intermediate segment value, intermediate segment value/1.786, intermediate segment value/5.56, side
Section value is successively set, and edge segment value is 0, wherein
The calculation formula of intermediate segment value Y specifically: Y=0.45-0.005X+0.0125X2, X is that every meter of wooden dipper of steel plate slight sea is bent maximum
Value；
Using 65-75% plastic deformation rate align 2 passages+using 55-65% plastic deformation rate align 2 passages, by steel plate flatness
Control is within 2mm/m；
Then further according to steel plate yield strength, thickness, width and length, it is once again set up different drafts in the width direction, depresses
Amount control is in 0-12mm: straightening roll divides 7 sections equally, and three sections of left and right is symmetrical, from edge to middle section, by edge segment value, edge segment value/
1.786, edge segment value/5.56, intermediate segment value are successively set, and intermediate segment value is 0, wherein
The calculation formula of edge segment value Y specifically: Y=- 0.09+0.0521X+0.00234X2, X is every meter of wooden dipper song maximum value of steel plate；
2 passage+55-65% plastic deformation rates are aligned using 75-85% plastic deformation rate and align 2 passages.
2. the quenched plate board-shape control method of thin gauge of wave and middle wave mixing in side according to claim 1, it is characterised in that:
In the step (1) and (2), if being unable to judge accurately steel plate is which kind of is more serious for middle wave and side wave, the modeling of 75%-85% is first used
Deformation form quotient aligns the plastic deformation rate aligning 2 of 2+55%-65%, then measures the different types of wooden dipper curvature value of steel plate again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910006890.XA CN109706303B (en) | 2019-01-04 | 2019-01-04 | Method for controlling plate shape of thin-specification quenching and tempering plate with mixed edge waves and middle waves |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910006890.XA CN109706303B (en) | 2019-01-04 | 2019-01-04 | Method for controlling plate shape of thin-specification quenching and tempering plate with mixed edge waves and middle waves |
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| CN109706303B CN109706303B (en) | 2020-07-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112570465A (en) * | 2019-09-29 | 2021-03-30 | 上海梅山钢铁股份有限公司 | Thin T5 material S-shaped middle wave defect forecasting method |
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| KR20010036626A (en) * | 1999-10-11 | 2001-05-07 | 이구택 | Method for setting control gain for the shape of strip in hot rolling mill |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112570465A (en) * | 2019-09-29 | 2021-03-30 | 上海梅山钢铁股份有限公司 | Thin T5 material S-shaped middle wave defect forecasting method |
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