CN105290159B - Chill belt plate shape straightening process - Google Patents
Chill belt plate shape straightening process Download PDFInfo
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- CN105290159B CN105290159B CN201510878218.1A CN201510878218A CN105290159B CN 105290159 B CN105290159 B CN 105290159B CN 201510878218 A CN201510878218 A CN 201510878218A CN 105290159 B CN105290159 B CN 105290159B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/05—Stretching combined with rolling
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Abstract
The present invention provides a kind of chill belt plate shape straightening process.Include mainly stretch-bend leveller technique and multiple roll continuous straightening technique, chill strip successively stretched bending straightening and multiple roll continuous straightening are added deeply, including has the following steps：Unit is installed：In unit process section inlet porting tension roll assembly, outlet tension roll assembly is also set up, compound straightening machine is set between entrance tension roll assembly and outlet tension roll assembly；Breaking elongation setting value is distributed to the straightening unit and multiple roll resistance straightening unit of compound straightening machine；The practical elongation percentage of strip is compared with breaking elongation setting value, dynamic adjusts tension value.The configuration of the present invention is simple, it is easy to operate, it is relatively good for the elongation control of steel plate, it can be obviously improved chill belt plate shape quality, improve product quality level.
Description
Technical field
The present invention relates to metallurgy industry cold rolled strip steel production fields, and in particular to a kind of to promote chill belt plate shape quality
Straightening process can be applied strong in a variety of improvement such as cold-strip steel rewinding unit, high-strength steel galvanizing unit, high-strength steel continuous annealing unit
The belt plate shape unit that degree is high, elongation percentage is low.
Background technology
That there are internal stress is big for chill strip after cold rolling is processed, yield strength is big, yield tensile ratio is high, elongation percentage is low and
The features such as plate face wooden dipper song shape wave, with being thinned for belt steel thickness, feature is more apparent, and plate shape aligns more difficult.Pass through one
As plate shape method for aligning to obtain such product commodity coiled material be always industry problem.
Currently, the process aligned by withdrawal straightening machine, not can effectively improve chill belt plate shape problem still, traces it to its cause
The mechanical property and its feature for essentially consisting in such plank cause its stretch-bending straightening to occur the elongation range that can be set in the process
The problems such as small, bending roll and the parameters such as straightening roll insertion and technique tension are difficult to control.
Invention content
The technical problem to be solved by the present invention is to be directed to above-mentioned deficiency, a kind of simple in structure, operation side is provided
Just, relatively good for the elongation control of steel plate, it can be obviously improved chill belt plate shape quality, improve product quality level
Chill belt plate shape straightening process.
The technical solution adopted by the present invention to solve the technical problems is：
Chill belt plate shape straightening process will be cold mainly including stretch-bend leveller technique and multiple roll continuous straightening technique
Stiff ribbon steel stretched bending straightening and multiple roll continuous straightening deep processing successively, which is characterized in that including having the following steps：
Unit is installed：In unit process section inlet porting tension roll assembly, while incremental encoder detection speed being installed, also
Setting outlet tension roll assembly is also installed incremental encoder detection speed, is set between entrance tension roll assembly and outlet tension roll assembly
Compound straightening machine is set, is set using absolute value type encoder measuring roll seat；Compound straightening machine is aligned single by straightening unit and multiple roll
Member composition, utilizes straightening unit stretch-bending straightening and the wide region of multiple roll resistance straightening unit, small cornerite, multi-pass, the company gradually successively decreased
Continuous forward and reverse bending and the coupling of their complex bends so that strip generates the extension of plastic yielding position, realizes micro
Elongation percentage changes, and improves chill belt plate shape quality.
According to the yield strength and description of chill strip supplied materials, process section tension and breaking elongation are set；To always it prolong
The rate setting value of stretching distributes to the straightening unit and multiple roll resistance straightening unit of compound straightening machine；And according to the elongation percentage setting value of distribution point
Not She Ding in straightening unit the compression distance and multiple roll resistance straightening unit lower roller base of bending roll and straightening roll angle of inclination；
Thereafter, the practical elongation percentage of strip is detected in real time using the incremental encoder of process section entrance and exit jockey pulley；
The practical elongation percentage of strip is compared with breaking elongation setting value, when there is deviation and not good enough plate shape improvement, dynamic
Adjust tension value；
The adjustment of tension value adjusts straightening unit and multiple roll resistance straightening unit to realize by dynamic, and straightening unit includes to draw
Unit bending roller and straightening unit straightening roll are rectified, wherein dynamic adjusts the indentation of straightening unit bending roller and straightening unit straightening roll
Depth adjusts tension；Tension is adjusted simultaneously also by the angle of inclination of dynamic adjustment multiple roll resistance straightening unit lower roller base；Pass through
The coupling of the stretch-bending straightening and their complex bends of straightening unit and multiple roll resistance straightening unit, realizes that micro elongation percentage changes
Become.
In the above scheme, the process section tension and breaking elongation, according to the yield strength of chill strip supplied materials and
Description is set.
In the above scheme, breaking elongation setting value is proportionately distributed to straightening unit, is set by the way of presetting
Determine the compression distance of straightening unit bending roller and straightening roll.
In the above scheme, the remaining proportion of breaking elongation setting value is distributed into multiple roll resistance straightening unit, use is presetting
Mode set the angle of inclination of multiple roll resistance straightening unit lower roller base.
In the above scheme, straightening unit is distributed to by the 65% ~ 85% of breaking elongation setting value, by breaking elongation setting value
Remaining proportion distribute to multiple roll resistance straightening unit.
In the above scheme, when detecting between the practical elongation percentage of strip and breaking elongation setting value deviation and plate occur
When shape improvement is not good enough, deviation signal is fed back into process section tension control system, dynamic adjusts tension and ensures tension value
It is constant.
In the above scheme, when detecting between the practical elongation percentage of strip and breaking elongation setting value deviation and plate occur
When shape improvement is not good enough, deviation signal is fed back to the bending roll position control system of straightening unit, dynamic adjusts bending roll
Compression distance and ensure constant depth.
In the above scheme, when detecting between the practical elongation percentage of strip and breaking elongation setting value deviation and plate occur
When shape improvement is not good enough, deviation signal is fed back to the straightening roll position control system of straightening unit, dynamic adjusts straightening roll
Compression distance and ensure constant depth.
In the above scheme, when detecting between the practical elongation percentage of strip and breaking elongation setting value deviation and plate occur
When shape improvement is not good enough, deviation signal is fed back to the lower roller base position adjustment of multiple roll resistance straightening unit, under dynamic adjusts
Roller seat angle of inclination simultaneously ensures that angle is constant.
The principle of the present invention is：In unit process section inlet porting tension roll assembly（Incremental encoder detection speed）With
Export tension roll assembly（Incremental encoder detection speed）, compound straightening is set between entrance tension roll assembly and outlet tension roll assembly
Machine（It sets at absolute value type encoder measuring roll seat）, compound straightening machine is made of straightening unit and multiple roll resistance straightening unit, utilizes drawing
Rectify unit stretch-bending straightening and the wide region of multiple roll resistance straightening unit, small cornerite, multi-pass, the continuous forward and reverse bending gradually successively decreased
And the coupling of their complex bends so that strip generates the extension of plastic yielding position, realizes that micro elongation percentage changes, changes
It is apt to chill belt plate shape quality.
Process section control model is as follows：
According to the yield strength of chill strip, process section tension and breaking elongation setting value are calculated；Breaking elongation is set
Value is proportionately distributed to straightening unit and multiple roll resistance straightening unit；Straightening list is set separately in the elongation percentage distributed according to straightening unit
First bending roll and straightening roll compression distance, specific depth value rise or fall certain altitude by program setting worm gear elevator, should
Height can be lifted the numeric data code accurate feedback of machine tail end absolute value type encoder by worm gear, when setting value is consistent with actual value,
Height is adjusted in place, and the working roll of straightening unit accurately reaches new operating position and realizes changing for belt plate shape leveling effect in turn
Become；The remaining proportion of breaking elongation setting value is distributed into multiple roll resistance straightening unit, by changing multiple roll resistance straightening unit lower roller base
Realize that the change of leveling effect, specific angle of inclination are distinguished by the worm gear elevator of program setting lower roller base bottom 2 in angle of inclination
Raising and lowering（Or declines and rise）Certain altitude, this can highly be lifted the data of machine tail end absolute value type encoder by worm gear
Code accurate feedback, when setting value is consistent with actual value, lower roller base angle of inclination is adjusted in place, the accurate shape of working roll of lower roller base
The angle of inclination of Cheng Xin changes the cornerite between upper roller seat working roll, and then realizes changing for belt plate shape leveling effect
Become；The practical elongation percentage of strip after processing is detected, the deviation between practical elongation percentage and breaking elongation setting value is calculated；
And according to this deviation and plate shape improvement, pass through tension control system adjusting process section tension；Pass through program setting
Target tension value, entrance jockey pulley and the incremental encoder exported on jockey pulley provide velocity pulse number, are calculated by PLC practical
Tension, when tension setting value is consistent with tension actual value, tension adjustment in place, forms new tension value, thus changes strip
Aligning condition improves chill belt plate shape quality.
In this technique belt plate shape straightening process, strip generally passes through feeding -- threading-stretch-bending straightening-inspection-point
Volume -- the process such as volume are unloaded, the plate shape straightening operation of strip is completed.In stretch-bending straightening process section, strip is successively by entrance
The equipment such as power roller group-compound straightening machine straightening unit-compound straightening machine multiple roll resistance straightening unit-outlet tension roll assembly realize band
The plate shape of steel is aligned.
The beneficial effect comprise that：
For chill strip internal stress is big, yield strength is big, yield tensile ratio is high, elongation percentage is low and the spy of plate face wooden dipper song shape wave
Point carries out deep processing using plate shape compound straightening technique to it, utilizes the stretch-bending straightening and multiple roll resistance straightening unit of straightening unit
The coupling in wide region, small cornerite, multi-pass, the continuous forward and reverse flecition and their complex bends gradually successively decreased,
So that strip generates the extension of plastic yielding position；It realizes that the micro elongation percentage in chill strip straightening process changes, improves chill
Belt plate shape quality.
Description of the drawings
Fig. 1 is the structural schematic diagram schematic diagram of the embodiment of the present invention
Fig. 2 is the structural schematic diagram of inventive embodiments aligning part
In figure：1- entrance tension roll assemblies；2- strips；3- compound straightening machines；4- exports tension roll assembly；5- straightening units；6-
Multiple roll resistance straightening unit.
Specific implementation mode
With reference to embodiment, the present invention is further illustrated：
Embodiment 1：
The present embodiment as shown in Fig. 1 Fig. 2 is chill belt plate shape straightening process, combines stretch-bend leveller and multiple roll is continuous
Strip 2 after cold rolling is sequentially sent to entrance tension roll assembly 1, compound straightening machine 3 and outlet by straightening process in process section
Power roller group 4 aligns deep processing into andante shape.Above-mentioned technique specifically includes following steps：First, strong according to the surrender of incoming band steel
Degree and description, set the tension and breaking elongation of process section；Then, breaking elongation setting value is distributed into straightening unit 5
With multiple roll resistance straightening unit 6；And the pressure of straightening unit 5 bending roll and straightening roll is set separately according to the elongation percentage setting value being assigned to
Enter the angle of inclination of 6 lower roller base of depth and multiple roll resistance straightening unit；Finally, strip 2 is detected in fact according to unit measuring device in real time
Border elongation percentage and plate shape improve situation, dynamic adjust tension value, 5 bending roll of straightening unit and straightening roll compression distance and
The angle of inclination of 6 lower roller base of multiple roll resistance straightening unit；By the aligning of straightening unit 5 and multiple roll resistance straightening unit 6 and they are compound
The coupling of bending realizes that the micro elongation percentage of chill strip changes, improves chill belt plate shape quality.
It is specific as shown in Figure 1：
In entrance tension roll assembly 1（Incremental encoder is set）With outlet tension roll assembly 4（Incremental encoder is set）It
Between setting compound straightening machine 3, compound straightening machine 3 is an autonomous device, by straightening unit 5（Absolute value type encoder is set）With
Multiple roll resistance straightening unit 6（Absolute value type encoder is set）Composition, utilizes the stretch-bending straightening and multiple roll resistance straightening unit 6 of straightening unit 5
Wide region continuous bend and their complex bends coupling so that strip generates the extension of plastic yielding position；It realizes
Micro elongation percentage changes, and improves chill belt plate shape quality.
Process section control model is as follows：
According to the yield strength of chill strip, process section tension and breaking elongation setting value are calculated；Breaking elongation is set
Value is proportionately distributed to straightening unit and multiple roll resistance straightening unit；According to the elongation percentage value of distribution, set by absolute value type encoder
Determine the compression distance of straightening unit bending roller and straightening roll and the angle of inclination of multiple roll resistance straightening unit lower roller base；Utilize entrance
Incremental encoder in power roller group 1 and outlet tension roll assembly 4, the elongation percentage generated to strip are detected；It is tied according to detection
Fruit and plate shape improve situation, dynamic adjusting process section tension；Dynamic adjustment straightening unit bending roller and straightening roll compression distance
And the angle of inclination of multiple roll resistance straightening unit lower roller base.Specific control method is as follows：The setting value of breaking elongation is divided in proportion
Dispensing straightening unit and multiple roll resistance straightening unit；It is curved by program setting straightening unit according to the elongation percentage that straightening unit is distributed
Curved roll compression distance, absolute value type encoder detect bending roll physical location, when setting compression distance and bending working roll are practical
When position consistency, bending roll is adjusted in place；Pass through program setting straightening unit straightening roll compression distance, the inspection of absolute value type encoder
Straightening roll physical location is surveyed, when setting compression distance is consistent with straightening operation roller physical location, straightening roll is adjusted in place；It will be total
The remaining proportion of elongation percentage setting value distributes to multiple roll resistance straightening unit, according to the elongation percentage that multiple roll resistance straightening unit is distributed, passes through
The change of leveling effect is realized at the angle of inclination for changing multiple roll resistance straightening unit lower roller base, and angle of inclination is by program setting lower roller base bottom
2, portion worm gear elevator distinguishes raising and lowering（Or declines and rise）Certain altitude, this highly can lift machine tail end by worm gear
The numeric data code accurate feedback of absolute value type encoder, when setting value is consistent with actual value, lower roller base angle of inclination is adjusted in place,
The working roll of lower roller base precisely forms new angle of inclination, that is, changes the cornerite between upper roller seat working roll, and then realize
The change of belt plate shape leveling effect；Improve effect when deviation and plate shape occur in the practical elongation percentage of strip and breaking elongation setting value
When fruit is not good enough, dynamic adjusts the compression distance and multiple roll resistance straightening unit lower roll of tension value, straightening unit bending roller and straightening roll
It is realized by the coupling of straightening unit and the aligning and their complex bends of multiple roll resistance straightening unit at the angle of inclination of seat
Micro elongation percentage changes in chill strip straightening process, improves chill belt plate shape quality.
Embodiment 2：
On the basis of above-described embodiment 1, straightening unit is distributed to by the 65% ~ 85% of breaking elongation setting value, will always be prolonged
The remaining proportion for stretching rate setting value distributes to multiple roll resistance straightening unit.Go out when between the practical elongation percentage of strip and breaking elongation setting value
When existing deviation and not good enough plate shape plate shape improvement, dynamic adjusts the indentation of tension value, straightening unit bending roller and straightening roll
The angle of inclination of depth and multiple roll resistance straightening unit lower roller base, by the aligning of straightening unit and multiple roll resistance straightening unit and they
The coupling of complex bend realizes that micro elongation percentage changes in chill strip straightening process, improves chill belt plate shape quality.
Embodiment 3：
On the basis of above-described embodiment 1, straightening unit is distributed to by the 80% ~ 85% of breaking elongation setting value, will always be prolonged
The remaining proportion for stretching rate setting value distributes to multiple roll resistance straightening unit.Go out when between the practical elongation percentage of strip and breaking elongation setting value
When existing deviation and not good enough plate shape improvement, dynamic adjusts the compression distance of tension value, straightening unit bending roller and straightening roll
And the angle of inclination of multiple roll resistance straightening unit lower roller base, by the aligning of straightening unit and multiple roll resistance straightening unit and they are compound
The coupling of bending realizes that micro elongation percentage changes in chill strip straightening process, improves chill belt plate shape quality.
Embodiment 4：
On the basis of above-described embodiment 1, straightening unit is distributed to by the 75% ~ 80% of breaking elongation setting value, will always be prolonged
The remaining proportion for stretching rate setting value distributes to multiple roll resistance straightening unit.Go out when between the practical elongation percentage of strip and breaking elongation setting value
When existing deviation and not good enough plate shape improvement, dynamic adjusts the compression distance of tension value, straightening unit bending roller and straightening roll
And the angle of inclination of multiple roll resistance straightening unit lower roller base, by the aligning of straightening unit and multiple roll resistance straightening unit and they are compound
The coupling of bending realizes that micro elongation percentage changes in chill strip straightening process, improves chill belt plate shape quality.
Embodiment 5：
On the basis of above-described embodiment 1, straightening unit is distributed to by the 70% ~ 75% of breaking elongation setting value, will always be prolonged
The remaining proportion for stretching rate setting value distributes to multiple roll resistance straightening unit.Go out when between the practical elongation percentage of strip and breaking elongation setting value
When existing deviation and not good enough plate shape improvement, dynamic adjusts the compression distance of tension value, straightening unit bending roller and straightening roll
And the angle of inclination of multiple roll resistance straightening unit lower roller base, by the aligning of straightening unit and multiple roll resistance straightening unit and they are compound
The coupling of bending realizes that micro elongation percentage changes in chill strip straightening process, improves chill belt plate shape quality.
Embodiment 6：
On the basis of above-described embodiment 1, straightening unit is distributed to by the 65% ~ 70% of breaking elongation setting value, will always be prolonged
The remaining proportion for stretching rate setting value distributes to multiple roll resistance straightening unit.Go out when between the practical elongation percentage of strip and breaking elongation setting value
When existing deviation and not good enough plate shape improvement, dynamic adjusts the compression distance of tension value, straightening unit bending roller and straightening roll
And the angle of inclination of multiple roll resistance straightening unit lower roller base, by the aligning of straightening unit and multiple roll resistance straightening unit and they are compound
The coupling of bending realizes that micro elongation percentage changes in chill strip straightening process, improves chill belt plate shape quality.
Described above is only the Application Example of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, therefore according to equivalence changes made by scope of the present invention patent, still belongs to protection scope of the present invention.
Claims (8)
1. chill belt plate shape straightening process, including stretch-bend leveller technique and multiple roll continuous straightening technique, by chill strip
Stretched bending straightening and multiple roll continuous straightening deep processing successively, which is characterized in that including having the following steps：
Unit is installed：In unit process section inlet porting tension roll assembly, while incremental encoder detection speed being installed, also sets up
Tension roll assembly is exported, incremental encoder detection speed is also installed, is arranged between entrance tension roll assembly and outlet tension roll assembly multiple
Straightener is closed, is set using absolute value type encoder measuring roll seat；Compound straightening machine is by straightening unit and multiple roll resistance straightening unit group
At；
Set process section tension and breaking elongation；Breaking elongation setting value is distributed to the straightening unit and multiple roll of compound straightening machine
Resistance straightening unit distributes to straightening unit by the 65% ~ 85% of breaking elongation setting value, by the remaining proportion of breaking elongation setting value point
Dispensing multiple roll resistance straightening unit；And the pressure of bending roll and straightening roll in straightening unit is set separately according to the elongation percentage setting value of distribution
Enter the angle of inclination of depth and multiple roll resistance straightening unit lower roller base；
Thereafter, the practical elongation percentage of strip is detected in real time using the incremental encoder of process section entrance and exit tension roll assembly；It will
The practical elongation percentage of strip is compared with breaking elongation setting value, and when there is deviation and not good enough plate shape improvement, dynamic is adjusted
Whole tension value；
The adjustment of tension value adjusts straightening unit and multiple roll resistance straightening unit to realize by dynamic, and straightening unit includes straightening list
First bending roll and straightening unit straightening roll, the straightening unit bending roller misplace arrangement up and down, the straightening unit straightening roll with
Straightening function is realized in slewing rollers cooperation, wherein the compression distance of dynamic adjustment straightening unit bending roller and straightening unit straightening roll comes
Adjust tension；Tension is adjusted simultaneously also by the angle of inclination of dynamic adjustment multiple roll resistance straightening unit lower roller base；Pass through straightening list
The coupling of the stretch-bending straightening and their complex bends of member and multiple roll resistance straightening unit realizes that micro elongation percentage changes.
2. chill belt plate shape straightening process according to claim 1, which is characterized in that the process section tension and total
Elongation percentage is set according to the yield strength of chill strip supplied materials and description.
3. chill belt plate shape straightening process according to claim 1, which is characterized in that by breaking elongation setting value press than
Example distributes to straightening unit, and the compression distance of straightening unit bending roller and straightening roll is set by the way of presetting.
4. chill belt plate shape straightening process according to claim 1, which is characterized in that by the surplus of breaking elongation setting value
Remaining pro rate gives multiple roll resistance straightening unit, and the angle of inclination of multiple roll resistance straightening unit lower roller base is set by the way of presetting.
5. chill belt plate shape straightening process according to claim 1, which is characterized in that by breaking elongation setting value
80% ~ 85% distributes to straightening unit, and the remaining proportion of breaking elongation setting value is distributed to multiple roll resistance straightening unit.
6. chill belt plate shape straightening process according to claim 1, which is characterized in that by breaking elongation setting value
75% ~ 80% distributes to straightening unit, and the remaining proportion of breaking elongation setting value is distributed to multiple roll resistance straightening unit.
7. chill belt plate shape straightening process according to claim 1, which is characterized in that by breaking elongation setting value
70% ~ 75% distributes to straightening unit, and the remaining proportion of breaking elongation setting value is distributed to multiple roll resistance straightening unit.
8. chill belt plate shape straightening process according to claim 1, which is characterized in that by breaking elongation setting value
65% ~ 70% distributes to straightening unit, and the remaining proportion of breaking elongation setting value is distributed to multiple roll resistance straightening unit.
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| CN201510878218.1A CN105290159B (en) | 2015-12-04 | 2015-12-04 | Chill belt plate shape straightening process |
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| CN201510878218.1A CN105290159B (en) | 2015-12-04 | 2015-12-04 | Chill belt plate shape straightening process |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016106208A1 (en) * | 2016-04-05 | 2017-10-05 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Method for stretch bending of a strip |
| CN107470394B (en) * | 2017-06-28 | 2019-09-10 | 柳州钢铁股份有限公司 | Cold rolling rewinding unit eliminates withdrawal straightening machine static bending cross break impression method |
| CN111185481B (en) * | 2020-01-15 | 2021-04-27 | 北京科技大学 | Combined cold rolling stretching bending straightener |
| CN111922124A (en) * | 2020-09-07 | 2020-11-13 | 佛山市荣星数控设备制造有限公司 | Pulling-straightening production line with differential conveying structure |
| CN112605166B (en) * | 2020-11-20 | 2022-12-02 | 中冶南方工程技术有限公司 | Strip steel straightening method and device |
| CN114011882B (en) * | 2021-10-12 | 2023-08-18 | 山西太钢不锈钢股份有限公司 | Stainless steel chilled plate type control method |
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|---|---|---|---|---|
| EP0665069A1 (en) * | 1994-02-01 | 1995-08-02 | Clecim | Process and equipment for straightening a thin metal band |
| CN101585058A (en) * | 2008-05-22 | 2009-11-25 | 上海精翔实业有限公司 | Band steel stretch-bending straightening system capable of controlling elongation rate and control method thereof |
| CN201380216Y (en) * | 2009-04-29 | 2010-01-13 | 北京建莱机电技术有限公司 | Strip stretch bending straightening device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010024714C5 (en) * | 2010-06-23 | 2018-10-18 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Method for stretch bending of metal strips and stretch bending plant |
| DE102013106243C5 (en) * | 2013-06-14 | 2018-10-04 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Method and device for stretch bending of metal strips |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0665069A1 (en) * | 1994-02-01 | 1995-08-02 | Clecim | Process and equipment for straightening a thin metal band |
| CN101585058A (en) * | 2008-05-22 | 2009-11-25 | 上海精翔实业有限公司 | Band steel stretch-bending straightening system capable of controlling elongation rate and control method thereof |
| CN201380216Y (en) * | 2009-04-29 | 2010-01-13 | 北京建莱机电技术有限公司 | Strip stretch bending straightening device |
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