CN108746216B - A kind of method and device of determining cold-rolling mill driving torque - Google Patents
A kind of method and device of determining cold-rolling mill driving torque Download PDFInfo
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- CN108746216B CN108746216B CN201810508459.0A CN201810508459A CN108746216B CN 108746216 B CN108746216 B CN 108746216B CN 201810508459 A CN201810508459 A CN 201810508459A CN 108746216 B CN108746216 B CN 108746216B
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- 238000005097 cold rolling Methods 0.000 title claims abstract description 180
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000003801 milling Methods 0.000 description 25
- 238000004519 manufacturing process Methods 0.000 description 13
- 238000005096 rolling process Methods 0.000 description 13
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
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Abstract
The present invention provides a kind of method and device of determining cold-rolling mill driving torque, method includes: the arm of force coefficient that single-stand cold-rolling machine is determined according to the mean radius of cold rolling mill work roller, the flattening radius of working roll；The roll torque of the cold-rolling mill is determined according to flattening radius, the cold-rolling mill of arm of force coefficient, working roll roll-force, the inlet thickness of strip, the exit thickness of strip and arm of force coefficient to be rolled；Obtain exporting unit's tension of the width of the strip, the entrance unit tension of the strip and the strip；The tension torque of the cold-rolling mill is determined according to exporting unit's tension of the width of the strip, the mean radius of the working roll, the entrance unit tension of the strip and the strip；Obtain the mill speed of the cold-rolling mill；The loss torque of the cold-rolling mill is determined according to the mean radius of the mill speed, the working roll；The driving torque of the cold-rolling mill is determined according to the roll torque, the tension torque and the loss torque.
Description
Technical field
The invention belongs to metal rolled technical field more particularly to a kind of methods and dress of determining cold-rolling mill driving torque
It sets.
Background technique
Driving torque is the important technological parameter of milling train production, directly decides rolling mill main motor, roll, coiling machine etc.
The safety of production equipment and the stability of production line.Simultaneously as the limitation to driving torque of rolling equipment load, driving force
Square also directly determines the yield of producing line.
At present in the driving torque for determining milling train, due to the defect of method of determination, the precision for the milling train torque determined
Not enough, the stability of the safety and production line that lead to production equipment cannot ensure.
Summary of the invention
In view of the problems of the existing technology, the embodiment of the invention provides a kind of methods of determining cold-rolling mill driving torque
And device, for solve in the prior art since it is determined that driving torque precision it is inadequate, cause production equipment safety and
The technical issues of stability of production line cannot ensure.
The present invention provides a kind of methods of determining cold-rolling mill driving torque, which comprises
Obtain the mean radius of cold rolling mill work roller, the working roll flattening radius, the cold-rolling mill is to be rolled rolls
Power, the inlet thickness of strip and the exit thickness of the strip processed；
Single-stand cold-rolling machine is determined according to the flattening radius of the mean radius of the cold rolling mill work roller, the working roll
Arm of force coefficient；
According to flattening radius, the cold-rolling mill of the arm of force coefficient, the working roll roll-force to be rolled, the band
The inlet thickness of steel, the exit thickness of the strip and the arm of force coefficient determine the roll torque of the cold-rolling mill；
Obtain exporting unit's tension of the width of the strip, the entrance unit tension of the strip and the strip；
According to the width of the strip, the mean radius of the working roll, the entrance unit tension of the strip and described
Exporting unit's tension of strip determines the tension torque of the cold-rolling mill；
Obtain the mill speed of the cold-rolling mill；
The loss torque of the cold-rolling mill is determined according to the mean radius of the mill speed, the working roll；
The driving torque of the cold-rolling mill is determined according to the roll torque, the tension torque and the loss torque.
It is described to be rolled according to the arm of force coefficient, the flattening radius of the working roll, the cold-rolling mill in above scheme
Roll-force, the inlet thickness of the strip, the exit thickness of the strip and the arm of force coefficient determine the cold-rolling mill
Roll torque, comprising:
According to formulaDetermine the roll torque M of the cold-rolling millr；Wherein, a
For the arm of force coefficient, the P is cold-rolling mill roll-force to be rolled, and the r ' is the flattening radius of the working roll,
The H is the inlet thickness of the strip, and the h is the exit thickness of the strip.
In above scheme, according to the width of the strip, the working roll radius, the strip entrance unit tension and
Exporting unit's tension of the strip determines the tension torque of the cold-rolling mill, comprising:
According to formula Mt=r × b × (H × utb-h × utf) determines the tension torque M of the cold-rolling millt, wherein the r
For the mean radius of the cold rolling mill work roller, the b is the width of the strip, and the H is the inlet thickness of the strip,
The h is the exit thickness of the strip, and the utb is the entrance unit tension of the strip, and the utf is the strip
Exporting unit's tension.
In above scheme, the lost force that the cold-rolling mill is determined according to the mill speed, the working roll radius
Square, comprising:
According to formulaDetermine the loss torque M of the cold-rolling milll,
In, the v is the mill speed, and the r is the mean radius of the working roll, a0It is the first of the loss torque
Correction factor, a1For the second correction factor of the loss torque, a2Third for the loss torque corrects system
Number, a3For the 4th correction factor of the loss torque.
In above scheme, it is described determined according to the roll torque, the tension torque and the loss torque it is described cold
The driving torque of milling train, comprising:
According to formula M=Mr+Mt+MlDetermine the driving torque M of the cold-rolling mill, wherein the MrFor the roll-force
Square, the MtFor the tension torque, the MlFor the loss torque.
The present invention also provides a kind of device of determining cold-rolling mill driving torque, described device includes:
First acquisition unit, for obtain the working roll mean radius of the cold-rolling mill, the flattening radius of the working roll,
The exit thickness of cold-rolling mill roll-force to be rolled, the inlet thickness of strip and the strip；
First determination unit, for the flattening radius according to the mean radius of the cold rolling mill work roller, the working roll
Determine the arm of force coefficient of single-stand cold-rolling machine；
Second determination unit, for be rolled according to flattening radius, the cold-rolling mill of the arm of force coefficient, the working roll
The roll-force of system, the inlet thickness of the strip, the exit thickness of the strip and the arm of force coefficient determine the cold rolling
The roll torque of machine；
Second acquisition unit, for obtaining the width of the strip, the entrance unit tension and the strip of the strip
Exporting unit's tension；
Third determination unit, for being entered according to the width of the strip, the mean radius of the working roll, the strip
Exporting unit's tension of mouth unit tension and the strip determines the tension torque of the cold-rolling mill；
Third acquiring unit obtains the mill speed of the cold-rolling mill；
4th determination unit, for determining the cold-rolling mill according to the mean radius of the mill speed, the working roll
Loss torque；
5th determination unit, for according to the determination of the roll torque, the tension torque and the loss torque
The driving torque of cold-rolling mill.
In above scheme, second determination unit is specifically used for:
According to formulaDetermine the roll torque M of the cold-rolling millr；Wherein, a
For the arm of force coefficient, the P is cold-rolling mill roll-force to be rolled, and the r ' is the flattening radius of the working roll,
The H is the inlet thickness of the strip, and the h is the exit thickness of the strip.
In above scheme, third determination unit is specifically used for:
According to formula Mt=r × b × (H × utb-h × utf) determines the tension torque M of the cold-rolling millt, wherein the r
For the working roll radius of the cold-rolling mill, the b is the width of the strip, and the H is the inlet thickness of the strip, described
H is the exit thickness of the strip, and the utb is the entrance unit tension of the strip, and the utf is the outlet of the strip
Unit tension.
In above scheme, the 4th determination unit is specifically used for: according to formulaDetermine the loss torque M of the cold-rolling milll, wherein the v is described rolls
Speed processed, the r are the mean radius of the working roll, a0For the first correction factor of the loss torque, a1For
Second correction factor of the loss torque, a2For the third correction factor of the loss torque, a3For the loss
4th correction factor of torque.
In above scheme, the 5th determination unit is specifically used for:
According to formula M=Mr+Mt+MlDetermine the driving torque M of the cold-rolling mill, wherein the MrFor the roll-force
Square, the MtFor the tension torque, the MlFor the loss torque.
The present invention provides a kind of method and device of determining cold-rolling mill driving torque, method includes: to obtain the cold rolling
The mean radius of machine working roll, the working roll to flatten radius, the cold-rolling mill roll-force to be rolled, the entrance of strip thick
The exit thickness of degree and the strip；According to the mean radius of the cold rolling mill work roller, the flattening radius of the working roll
Determine the arm of force coefficient of single-stand cold-rolling machine；It is waited for according to the arm of force coefficient, the flattening radius of the working roll, the cold-rolling mill
The roll-force of rolling, the inlet thickness of the strip, the exit thickness of the strip and the arm of force coefficient determine described cold
The roll torque of milling train；Obtain the exporting unit of the width of the strip, the entrance unit tension of the strip and the strip
Tension；According to the width of the strip, the mean radius of the working roll, the strip entrance unit tension and the strip
Exporting unit's tension determine the tension torque of the cold-rolling mill；Obtain the mill speed of the cold-rolling mill；According to the rolling
Speed, the mean radius of the working roll determine the loss torque of the cold-rolling mill；According to the roll torque, the tension power
Square and the loss torque determine the driving torque of the cold-rolling mill；In this way, considering the loss torque of cold-rolling mill, and consider
Influence of the tension to roll torque before and after strip is rolled according to roll torque, the tension torque and the loss torque in determination
It is more proper with practical rolling situation when the driving torque of machine, the precision of driving torque is improved, and then ensure production equipment
Safety and production line stability.
Detailed description of the invention
Fig. 1 is the method flow schematic diagram for the determination cold-rolling mill driving torque that the embodiment of the present invention one provides；
Fig. 2 is the apparatus structure schematic diagram of determining cold-rolling mill driving torque provided by Embodiment 2 of the present invention.
Specific embodiment
In order to solve in the prior art since it is determined that mill drive torque precision it is inadequate, lead to the peace of production equipment
The technical issues of complete and production line stability cannot ensure, the present invention provides a kind of sides of determining cold-rolling mill driving torque
Method and device, method includes: the mean radius for obtaining the cold rolling mill work roller, the flattening radius of the working roll, described cold
The exit thickness of milling train roll-force to be rolled, the inlet thickness of strip and the strip；According to the cold rolling mill work roller
Mean radius, the working roll flattening radius determine the arm of force coefficient of single-stand cold-rolling machine；According to the arm of force coefficient, institute
State working roll flatten radius, the cold-rolling mill roll-force to be rolled, the strip inlet thickness, the strip outlet
Thickness and the arm of force coefficient determine the roll torque of the cold-rolling mill；Obtain the width of the strip, the strip enters
Exporting unit's tension of mouth unit tension and the strip；According to the width of the strip, the mean radius of the working roll, institute
Exporting unit's tension of the entrance unit tension and the strip of stating strip determines the tension torque of the cold-rolling mill；Described in acquisition
The mill speed of cold-rolling mill；The lost force of the cold-rolling mill is determined according to the mean radius of the mill speed, the working roll
Square；The driving torque of the cold-rolling mill is determined according to the roll torque, the tension torque and the loss torque.
Technical solution of the present invention is described in further detail below by drawings and the specific embodiments.
Embodiment one
The present embodiment provides a kind of method and device of determining cold-rolling mill driving torque, method includes:
S110 obtains the mean radius of the cold rolling mill work roller, the flattening radius of the working roll, the cold-rolling mill and waits for
The exit thickness of the roll-force of rolling, the inlet thickness of strip and the strip；
In this step, the mean radius of the cold rolling mill work roller, the flattening radius of the working roll, the cold rolling are obtained
The exit thickness of machine roll-force to be rolled, the inlet thickness of strip and the strip；Here, because cold-rolling mill includes upper work
Cross roller and bottom working roll, the radius of upper working rolls and lower working rolls is different, therefore to be averaged to the radius of upper working rolls and lower working rolls namely cold rolling
The mean radius of machine working roll.
S111 determines that single chassis is cold according to the flattening radius of the mean radius of the cold rolling mill work roller, the working roll
The arm of force coefficient of milling train；
After getting the mean radius of cold rolling mill work roller, the flattening radius of the working roll, determined according to formula (1) single
The arm of force coefficient a of rack cold-rolling mill:
In formula (1), r is the mean radius of the working roll, and the r ' is the flattening radius of the working roll, described
Xg is the self study coefficient of mill drive Calculating Torque during Rotary model, and generally taking base value is 0.5, the value positive negative variation between 0~1.
S112, according to the arm of force coefficient, the working roll flatten radius, the cold-rolling mill roll-force to be rolled,
The inlet thickness of the strip, the exit thickness of the strip and the arm of force coefficient determine the roll-force of the cold-rolling mill
Square；
After determining arm of force coefficient, the roll torque M of cold-rolling mill is determined according to formula (2)r:
In formula (2), a is the arm of force coefficient, and the P is cold-rolling mill roll-force to be rolled, described
R ' is the flattening radius of the working roll, and the H is the inlet thickness of the strip, and the h is the exit thickness of the strip.
S113 obtains the exporting unit of the width of the strip, the entrance unit tension of the strip and the strip
Power；According to the width of the strip, the mean radius of the working roll, the entrance unit tension of the strip and the strip
Exporting unit's tension determines the tension torque of the cold-rolling mill；
Determine roll torque MrAfterwards, the width of the strip, the entrance unit tension of the strip and the band are obtained
Exporting unit's tension of steel determines the tension torque M of the cold-rolling mill according to formula (3)t:
Mt=r × b × (H × utb-h × utf) (3)
In formula (3), the r is the mean radius of the cold rolling mill work roller, and the b is the width of the strip,
The H is the inlet thickness of the strip, and the h is the exit thickness of the strip, and the utb is the entrance list of the strip
Position tension, the utf are exporting unit's tension of the strip.
S114 obtains the mill speed of the cold-rolling mill；Mean radius according to the mill speed, the working roll is true
The loss torque of the fixed cold-rolling mill；
Here, in order to be considered that the loss rolled and in actual operation, the mill speed of the cold-rolling mill is obtained；
The loss torque M of the cold-rolling mill is determined according to formula (4)l:
In formula (4), the v is the mill speed, and the r is the mean radius of the working roll, a0For
First correction factor of the loss torque, a1For the second correction factor of the loss torque, a2For the loss
The third correction factor of torque, a3For the 4th correction factor of the loss torque.The a0、a1、a2、a3Being can basis
Milling train actual operating data is determined, specific as follows:
Average mill speed v of the acquisition milling train under each mill speed first, average roll-force P, average mill current I
And voltage U is averagely rolled, data are as shown in table 1:
Table 1
As it can be seen from table 1 a total of eight groups of data in practical applications can be according to this eight groups of data, according to formula
(5) the secondary power W of milling train is determined respectivelyl:
In formula (5), I is average mill current, and U is averagely to roll voltage, and the η is the secondary power for rolling motor
Coefficient, the coefficient are known.It can thus determine four groups of secondary powers.
Then the actual loss torque M ' of milling train is determined according to formula (6)l:
It can thus determine eight groups of actual loss torque M 'l。
Then the actual loss torque determined is substituted into formula (4), and by corresponding mill speed v and working roll
Mean radius substitutes into formula (4), then carries out polynomial regression fit to formula (4), can determine a0、a1、a2、a3.This
In, the upper roller roller diameter of the milling train is 84.63mm, and lower roll roller diameter is 83.96mm.
The a determined by the data in above-mentioned table 10、a1、a2、a3Occurrence it is as shown in table 2:
Table 2
| Parameter | a0 | a1 | a2 | a3 |
| Numerical value | -126110 | 188609 | -38978 | 486 |
S115 determines the transmission of the cold-rolling mill according to the roll torque, the tension torque and the loss torque
Torque.
After determining roll torque, the tension torque and the loss torque, the biography of cold-rolling mill is determined according to formula (7)
Kinetic moment M:
M=Mr+Mt+Ml (7)
In this way due to consideration that the loss torque of milling train, therefore when determining driving torque, more fitting is practical, to mention
The high precision of driving torque.
Embodiment two
Corresponding to embodiment one, the present embodiment provides a kind of devices of determining cold-rolling mill driving torque, as shown in Fig. 2, institute
Stating device includes: that first acquisition unit 21, the first determination unit 22, the second determination unit 23, second acquisition unit 24, third are true
Order member 25, third acquiring unit 26, the 4th determination unit 27, the 5th determination unit 28；Wherein,
The first acquisition unit 21 is used to obtain the flattening of the mean radius, the working roll of the cold rolling mill work roller
Radius, the cold-rolling mill roll-force to be rolled, the inlet thickness of strip and the exit thickness of the strip；Here, because cold
Milling train includes upper worked roller and bottom working roll, and the radius of upper working rolls and lower working rolls is different, therefore to take to the radius of upper working rolls and lower working rolls
The mean radius of average value namely cold rolling mill work roller.
After getting the flattening radius of the mean radius of cold rolling mill work roller, the working roll, described first determine it is single
Member 21 determines the arm of force coefficient a of single-stand cold-rolling machine according to formula (1):
In formula (1), r is the mean radius of the working roll, and the r ' is the flattening radius of the working roll, described
Xg is the self study coefficient of mill drive Calculating Torque during Rotary model, and generally taking base value is 0.5, the value positive negative variation between 0~1.
After determining arm of force coefficient, the second determination unit 23 is used to determine the roll torque of cold-rolling mill according to formula (2)
Mr:
In formula (2), a is the arm of force coefficient, and the P is cold-rolling mill roll-force to be rolled, described
R ' is the flattening radius of the working roll, and the H is the inlet thickness of the strip, and the h is the exit thickness of the strip.
Determine roll torque MrAfterwards, the second acquisition unit 24 is used to obtain width, the strip of the strip
Entrance unit tension and the strip exporting unit's tension, third determination unit 25 be used for according to formula (3) determine described in
The tension torque M of cold-rolling millt:
Mt=r × b × (H × utb-h × utf) (3)
In formula (3), the r is the mean radius of the cold rolling mill work roller, and the b is the width of the strip,
The H is the inlet thickness of the strip, and the h is the exit thickness of the strip, and the utb is the entrance list of the strip
Position tension, the utf are exporting unit's tension of the strip.
Here, in order to be considered that the loss rolled and in actual operation, the third acquiring unit 26 is also used to
Obtain the mill speed of the cold-rolling mill；4th determination unit 27 is used to determine the damage of the cold-rolling mill according to formula (4)
Lose torque Ml:
In formula (4), the v is the mill speed, and the r is the mean radius of the working roll, a0For
First correction factor of the loss torque, a1For the second correction factor of the loss torque, a2For the loss
The third correction factor of torque, a3For the 4th correction factor of the loss torque.The a0、a1、a2、a3Being can basis
Milling train actual operating data is determined, specific as follows:
Average mill speed v of the acquisition milling train under each mill speed first, average roll-force P, average mill current I
And voltage U is averagely rolled, data are as shown in table 1:
Table 1
As it can be seen from table 1 a total of eight groups of data in practical applications can be according to this eight groups of data, according to formula
(5) the secondary power W of milling train is determined respectivelyl:
In formula (5), I is average mill current, and U is averagely to roll voltage, and the η is the secondary power for rolling motor
Coefficient, the coefficient are known.It can thus determine four groups of secondary powers.
Then the actual loss torque M ' of milling train is determined according to formula (6)l:
It can thus determine eight groups of actual loss torque M 'l。
Then the actual loss torque determined is substituted into formula (4), and by corresponding mill speed v and working roll
Mean radius substitutes into formula (4), then carries out polynomial regression fit to formula (4), can determine a0、a1、a2、a3.This
In, the upper roller roller diameter of the milling train is 84.63mm, and lower roll roller diameter is 83.96mm.
The a determined by the data in above-mentioned table 10、a1、a2、a3Occurrence it is as shown in table 2:
Table 2
| Parameter | a0 | a1 | a2 | a3 |
| Numerical value | -126110 | 188609 | -38978 | 486 |
It should be noted that a0、a1、a2、a3Being can be constantly modified according to the progress of preset period, such as can be with every
Half a year acquires a data, redefines out, a0、a1、a2、a3Value.
After determining roll torque, the tension torque and the loss torque, the 5th determination unit 28 is used for root
The driving torque M of cold-rolling mill is determined according to formula (7):
M=Mr+Mt+Ml (7)
In this way due to consideration that the loss torque of milling train, by the idling torque of milling train, overcomes the roll mandrel occurred when rolling
The additional friction torque etc. for holding transmission mechanism etc. is integrated into loss torque, therefore when determining driving torque, more fitting is real
Border, to improve the precision of driving torque.
Embodiment three
When practical application, the determining device that the determination method and embodiment two provided using embodiment one is provided is to certain unit price
It is specific as follows when the driving torque of cold-rolling mill is determined:
It is to be rolled to obtain the mean radius of the cold rolling mill work roller, the flattening radius of the working roll, the cold-rolling mill
Roll-force, the inlet thickness of strip and the exit thickness of the strip；Here, because cold-rolling mill include upper worked roller and under
Working roll, the radiuses of upper working rolls and lower working rolls is different, therefore to be averaged to the radius of upper working rolls and lower working rolls namely cold rolling mill work roller
Mean radius.
In the present embodiment, the mean radius of working roll is 36mm, the flattening radius of working roll are as follows: 40.44mm, the cold rolling
Machine roll-force to be rolled is 569.07 tons, and the inlet thickness of strip is 2.6mm, and the inlet thickness of strip is 1.7mm.
After getting the mean radius of cold rolling mill work roller, the flattening radius of the working roll, determined according to formula (1) single
The arm of force coefficient a of rack cold-rolling mill:
In formula (1), r is the mean radius of the working roll, and the r ' is the flattening radius of the working roll, described
Xg is the self study coefficient of mill drive Calculating Torque during Rotary model, value 0.37051317.
After determining arm of force coefficient, the roll torque M of cold-rolling mill is determined according to formula (2)r:
In formula (2), a is the arm of force coefficient, and the P is cold-rolling mill roll-force to be rolled, described
R ' is the flattening radius of the working roll, and the H is the inlet thickness of the strip, and the h is the exit thickness of the strip.
The roll torque M determined in the present embodimentrFor 2544139.3kg.mm.
The tension torque M of the cold-rolling mill is determined according to formula (3)t:
Mt=r × b × (H × utb-h × utf) (3)
In formula (3), the r is the mean radius of the cold rolling mill work roller, and the b is the width of the strip,
The H is the inlet thickness of the strip, and the h is the exit thickness of the strip, and the utb is the entrance list of the strip
Position tension, the utf are exporting unit's tension of the strip.The tension torque M determined in this implementationtFor
445356.91kg.mm。
Here, in order to be considered that the loss rolled and in actual operation, the mill speed of the cold-rolling mill is obtained；
The loss torque M of the cold-rolling mill is determined according to formula (4)l:
In formula (4), the v is the mill speed, and the r is the mean radius of the working roll, a0For
First correction factor of the loss torque, a1For the second correction factor of the loss torque, a2For the loss
The third correction factor of torque, a3For the 4th correction factor of the loss torque.Mill speed in the present embodiment are as follows:
428.5m/min；a0For -126110, a1It is 188609, a2For -38978, a3Be 486, it is determined that loss torque Ml:
98258.125kg.mm。
After determining roll torque, the tension torque and the loss torque, the biography of cold-rolling mill is determined according to formula (7)
Kinetic moment M:
M=Mr+Mt+Ml (7)
The driving torque determined is 2197040.5kg.mm；In this way due to consideration that the loss torque of milling train, therefore
When determining driving torque, more fitting is practical, to improve the precision of driving torque.
The method and device energy bring beneficial effect of determining cold-rolling mill driving torque provided in an embodiment of the present invention is at least
It is:
The present invention provides a kind of method and device of determining cold-rolling mill driving torque, method includes: to obtain the cold rolling
The mean radius of machine working roll, the working roll to flatten radius, the cold-rolling mill roll-force to be rolled, the entrance of strip thick
The exit thickness of degree and the strip；According to the mean radius of the cold rolling mill work roller, the flattening radius of the working roll
Determine the arm of force coefficient of single-stand cold-rolling machine；It is waited for according to the arm of force coefficient, the flattening radius of the working roll, the cold-rolling mill
The roll-force of rolling, the inlet thickness of the strip, the exit thickness of the strip and the arm of force coefficient determine described cold
The roll torque of milling train；Obtain the exporting unit of the width of the strip, the entrance unit tension of the strip and the strip
Tension；According to the width of the strip, the mean radius of the working roll, the strip entrance unit tension and the strip
Exporting unit's tension determine the tension torque of the cold-rolling mill；Obtain the mill speed of the cold-rolling mill；According to the rolling
Speed, the mean radius of the working roll determine the loss torque of the cold-rolling mill；According to the roll torque, the tension power
Square and the loss torque determine the driving torque of the cold-rolling mill；In this way, the loss torque of cold-rolling mill is considered, by milling train
Idling torque, the additional friction torque for overcoming the roll bearing transmission mechanism occurred when rolling etc. etc. are integrated into loss torque,
And in view of influence of the tension to roll torque before and after strip, according to roll torque, the tension torque and the loss torque
It is more proper with practical rolling situation in the driving torque for determining milling train, the precision of driving torque is improved, and then ensure
The safety of production equipment and the stability of production line.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention, it is all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention, should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of method of determining cold-rolling mill driving torque, which is characterized in that the described method includes:
Flattening radius, the cold-rolling mill of the mean radius, the working roll that obtain cold rolling mill work roller roll-force to be rolled,
The exit thickness of the inlet thickness of strip and the strip；
The arm of force of single-stand cold-rolling machine is determined according to the flattening radius of the mean radius of the cold rolling mill work roller, the working roll
Coefficient；
Radius, cold-rolling mill roll-force to be rolled, the strip are flattened according to the arm of force coefficient, the working roll
Inlet thickness, the exit thickness of the strip and the arm of force coefficient determine the roll torque of the cold-rolling mill；
Obtain exporting unit's tension of the width of the strip, the entrance unit tension of the strip and the strip；
According to the width of the strip, the mean radius of the working roll, the strip entrance unit tension and the strip
Exporting unit's tension determine the tension torque of the cold-rolling mill；
Obtain the mill speed of the cold-rolling mill；
The loss torque of the cold-rolling mill is determined according to the mean radius of the mill speed, the working roll；
The driving torque of the cold-rolling mill is determined according to the roll torque, the tension torque and the loss torque；Wherein,
It is described that single-stand cold-rolling machine is determined according to the mean radius of the cold rolling mill work roller, the flattening radius of the working roll
Arm of force coefficient, comprising:
According to formulaDetermine the arm of force coefficient of single-stand cold-rolling machine；R is average the half of the working roll
Diameter, the r ' are the flattening radius of the working roll, and the xg is the self study coefficient of mill drive Calculating Torque during Rotary model.
2. the method as described in claim 1, which is characterized in that the flattening according to the arm of force coefficient, the working roll
Radius, the cold-rolling mill roll-force to be rolled, the inlet thickness of the strip, the exit thickness of the strip and the power
Arm coefficient determines the roll torque of the cold-rolling mill, comprising:
According to formulaDetermine the roll torque M of the cold-rolling millr；Wherein, a is institute
Arm of force coefficient is stated, the P is cold-rolling mill roll-force to be rolled, and the r ' is the flattening radius of the working roll, the H
For the inlet thickness of the strip, the h is the exit thickness of the strip.
3. the method as described in claim 1, which is characterized in that according to the width of the strip, the working roll radius, described
The entrance unit tension of strip and exporting unit's tension of the strip determine the tension torque of the cold-rolling mill, comprising:
According to formula Mt=r × b × (H × utb-h × utf) determines the tension torque M of the cold-rolling millt, wherein the r is institute
The mean radius of cold rolling mill work roller is stated, the b is the width of the strip, and the H is the inlet thickness of the strip, described
H is the exit thickness of the strip, and the utb is the entrance unit tension of the strip, and the utf is the outlet of the strip
Unit tension.
4. the method as described in claim 1, which is characterized in that described true according to the mill speed, the working roll radius
The loss torque of the fixed cold-rolling mill, comprising:
According to formulaDetermine the loss torque M of the cold-rolling milll, wherein institute
Stating v is the mill speed, and the r is the mean radius of the working roll, a0For the first amendment of the loss torque
Coefficient, a1For the second correction factor of the loss torque, a2For the third correction factor of the loss torque, institute
State a3For the 4th correction factor of the loss torque.
5. the method as described in claim 1, which is characterized in that described according to the roll torque, the tension torque and institute
State the driving torque that loss torque determines the cold-rolling mill, comprising:
According to formula M=Mr+Mt+MlDetermine the driving torque M of the cold-rolling mill, wherein the MrIt is described for the roll torque
MtFor the tension torque, the MlFor the loss torque.
6. a kind of device of determining cold-rolling mill driving torque, which is characterized in that described device includes:
First acquisition unit, for obtaining the working roll mean radius of the cold-rolling mill, the flattening radius of the working roll, described
The exit thickness of cold-rolling mill roll-force to be rolled, the inlet thickness of strip and the strip；
First determination unit, for being determined according to the mean radius of the cold rolling mill work roller, the flattening radius of the working roll
The arm of force coefficient of single-stand cold-rolling machine；
Second determination unit, it is to be rolled for flattening radius, the cold-rolling mill according to the arm of force coefficient, the working roll
Roll-force, the inlet thickness of the strip, the exit thickness of the strip and the arm of force coefficient determine the cold-rolling mill
Roll torque；
Second acquisition unit, for obtaining the width, the entrance unit tension of the strip and going out for the strip of the strip
Mouth unit tension；
Third determination unit, for according to the width of the strip, the mean radius of the working roll, the strip entrance list
Exporting unit's tension of position tension and the strip determines the tension torque of the cold-rolling mill；
Third acquiring unit obtains the mill speed of the cold-rolling mill；
4th determination unit, for determining the damage of the cold-rolling mill according to the mean radius of the mill speed, the working roll
Lose torque；
5th determination unit, for determining the cold rolling according to the roll torque, the tension torque and the loss torque
The driving torque of machine；Wherein,
First determination unit is specifically used for:
According to formulaDetermine the arm of force coefficient of single-stand cold-rolling machine；R is average the half of the working roll
Diameter, the r ' are the flattening radius of the working roll, and the xg is the self study coefficient of mill drive Calculating Torque during Rotary model.
7. device as claimed in claim 6, which is characterized in that second determination unit is specifically used for:
According to formulaDetermine the roll torque M of the cold-rolling millr；Wherein, a is institute
Arm of force coefficient is stated, the P is cold-rolling mill roll-force to be rolled, and the r ' is the flattening radius of the working roll, the H
For the inlet thickness of the strip, the h is the exit thickness of the strip.
8. device as claimed in claim 6, which is characterized in that third determination unit is specifically used for:
According to formula Mt=r × b × (H × utb-h × utf) determines the tension torque M of the cold-rolling millt, wherein the r is institute
The working roll radius of cold-rolling mill is stated, the b is the width of the strip, and the H is the inlet thickness of the strip, and the h is
The exit thickness of the strip, the utb are the entrance unit tension of the strip, and the utf is the outlet list of the strip
Position tension.
9. device as claimed in claim 6, which is characterized in that the 4th determination unit is specifically used for: according to formulaDetermine the loss torque M of the cold-rolling milll, wherein the v is described rolls
Speed processed, the r are the mean radius of the working roll, a0For the first correction factor of the loss torque, a1For
Second correction factor of the loss torque, a2For the third correction factor of the loss torque, a3For the loss
4th correction factor of torque.
10. device as claimed in claim 6, which is characterized in that the 5th determination unit is specifically used for:
According to formula M=Mr+Mt+MlDetermine the driving torque M of the cold-rolling mill, wherein the MrIt is described for the roll torque
MtFor the tension torque, the MlFor the loss torque.
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| CN112355060B (en) * | 2020-10-23 | 2022-06-21 | 中冶南方工程技术有限公司 | Method for acquiring driving torque of strip mill |
| CN113182363B (en) * | 2021-05-12 | 2022-08-19 | 南京钢铁股份有限公司 | Force arm coefficient calculation method of single-stand wide and thick plate rolling mill |
| CN113806921A (en) * | 2021-08-24 | 2021-12-17 | 北京科技大学 | Cold continuous rolling mill inter-frame tension soft measurement method based on online monitoring |
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