CN109248927A - A kind of rolling force coefficient limit value divider lattice control method - Google Patents
A kind of rolling force coefficient limit value divider lattice control method Download PDFInfo
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- CN109248927A CN109248927A CN201710569364.5A CN201710569364A CN109248927A CN 109248927 A CN109248927 A CN 109248927A CN 201710569364 A CN201710569364 A CN 201710569364A CN 109248927 A CN109248927 A CN 109248927A
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- rolling force
- limit value
- force coefficient
- hardness
- coefficient limit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/12—Rolling load or rolling pressure; roll force
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
A kind of rolling force coefficient limit value layering sex control method, the specific method is as follows: 1) taking divider lattice control mode to rolling force coefficient limit value；2) initial value of each specification rolling force coefficient limit value: the soft or hard degree according to steel is determined, strip produced is divided into 3 seed types, it is that hardness is soft-type respectively, the moderate type of hardness and the inclined gravity die of hardness provide 3 kinds of rolling force coefficient limit values, as initial value, then according to practical condition, the actual needs of each specification optimizes adjustment to roll-force, and the amplitude adjusted every time is 0.01~0.05.Compared with prior art, the beneficial effects of the present invention are: a kind of rolling force coefficient limit value is layered sex control method, roll-force index variation range is extended, improves calculation accuracy of rolling force.Reach the steel specification of limit value relative to rolling force coefficient before, calculation accuracy of rolling force obtains larger raising, and thickness control is improved, and reduces the overproof problem of thickness.
Description
Technical field
The present invention relates to a kind of rolling force coefficient limit value divider lattice control methods.
Background technique
The product specification of hot rolling line production is more under normal circumstances, including pipe line steel, silicon steel, aluminum steel, common carbon steel|, electricity
The performance difference of work steel etc., various steel is larger, reflects that rolling force coefficient distribution is different in a model, some roll-force systems
Number fluctuates among limit value, and some steel grade rolling force coefficients have reached the upper limit, and some steel grade rolling force coefficients have reached offline, made
It is larger at certain steel grade tube rolling simulation errors, roll gap calculating is influenced, and then influence thickness and precision.Further, since each steel grade rule
The debug time of lattice cannot be consistent, can be to having adjusted when needing to modify rolling force coefficient limit value because debugging a certain new spec
The specification tried has an impact, and so that the control parameter of these specifications is needed one and matches adaptation process again, may will affect life
Produce direct motion.Occur the rolling force coefficient limit value that the reason of this problem is all specifications be it is the same, each steel cannot be adapted to completely
Performance difference between kind specification.
Summary of the invention
The object of the present invention is to provide a kind of rolling force coefficient limit value divider lattice control methods, extend roll-force index variation
Range avoids having an impact the specification debugged when newly debugging specification modification rolling force coefficient limit value, reduces debugging risk,
Improve calculation accuracy of rolling force.
To achieve the above object, the present invention is implemented with the following technical solutions:
A kind of rolling force coefficient limit value divider lattice control method, the specific method is as follows:
1) divider lattice control mode is taken to rolling force coefficient limit value；
2) initial value of each specification rolling force coefficient limit value is determined: according to the soft or hard degree of steel, by strip produced
It is divided into 3 seed types, is that hardness is soft-type respectively, the moderate type of hardness and the inclined gravity die of hardness provides 3 kinds of rolling force coefficient limit values, make
For initial value, 3 kinds of rolling force coefficient limit value initial values are shown in Table 1, then according to practical condition, the actual needs of each specification,
Adjustment is optimized to roll-force, the amplitude adjusted every time can be adjusted repeatedly, be realized by this method 0.01~0.05
Control effect optimizes；It needs to keep a close eye on mill load situation during adjustment, prevents equipment breakdown.
The differentiation of strip hardness is using carbon equivalent as judgment basis, and carbon equivalent calculation formula is as follows:
CEQ=C+Mn/6+Si/24
In formula: CEQ: carbon equivalent value；
C: carbon element content in steel billet；
Mn: manganese element content in steel billet；
Si: silicon content in steel billet；
0.18% hardness of CEQ < is soft-type；
0.18%≤CEQ <, 0.26% hardness normal type；
The inclined gravity die of the hardness of CEQ >=0.26%.
Table 1:
Compared with prior art, the beneficial effects of the present invention are:
A kind of rolling force coefficient limit value divider lattice control method extends roll-force index variation range, improves roll-force meter
Precision is calculated, realizes that new debugging specification does not influence the function that complete specification normally rolls after debugging when modification rolls force coefficient limit value
Energy.Unified given mode is taken relative to rolling force coefficient limit value before, the flexibility of new spec debugging is improved and its rolls
Power computational accuracy processed avoids between different size because influencing each other caused by changing rolling force coefficient limit value, makes thickness control
It is improved, reduces the overproof problem of thickness.
Specific embodiment
Embodiments of the present invention are further illustrated below:
A kind of rolling force coefficient limit value divider lattice control method, the specific method is as follows:
1) divider lattice control mode is taken to rolling force coefficient limit value；
2) initial value of each specification rolling force coefficient limit value is determined: according to the soft or hard degree of steel, by strip produced
It is divided into 3 seed types, is that hardness is soft-type respectively, the moderate type of hardness and the inclined gravity die of hardness provides 3 kinds of rolling force coefficient limit values, make
For initial value, 3 kinds of rolling force coefficient limit value initial values are shown in Table 1, then according to practical condition, the actual needs of each specification,
Adjustment is optimized to roll-force, the amplitude adjusted every time can be adjusted repeatedly, be realized by this method 0.01~0.05
Control effect optimizes；It needs to keep a close eye on mill load situation during adjustment, prevents equipment breakdown.
The differentiation of strip hardness is using carbon equivalent as judgment basis, and carbon equivalent calculation formula is as follows:
CEQ=C+Mn/6+Si/24
In formula: CEQ: carbon equivalent value；
C: carbon element content in steel billet；
Mn: manganese element content in steel billet；
Si: silicon content in steel billet；
0.18% hardness of CEQ < is soft-type；
0.18%≤CEQ <, 0.26% hardness normal type；
The inclined gravity die of the hardness of CEQ >=0.26%.
Table 1:
Embodiment 1:
Certain 1700 hot rolling line of steel mill cannot adapt to asking for certain steel grades for unified rolling force coefficient limit value completely
Topic, has carried out deep analysis, has specified the producing cause of problem, be since the performance difference between different steel is larger one
Group rolling force coefficient limit value can not adapt to the requirement of all steel completely.For this problem, a kind of solve the problems, such as has been formulated
Method: modification model program takes divider lattice control mode, the rolling force coefficient limit value root of each specification to rolling force coefficient limit value
According to being individually adjusted.According to big data statistical result, the initial value of specification rolling force coefficient limit value is determined, according to steel
Soft or hard degree, strip produced is divided into 3 seed types, is that hardness is soft-type respectively, the moderate type of hardness and the inclined gravity die of hardness,
3 groups of rolling force coefficient limit values are provided, as initial value (being shown in Table 2).
Table 2: certain 1700 hot rolling line of steel mill rolls force coefficient initial value
Adjustment is optimized according to actual production and equipment situation, at this point, adjustment is not carried out by layer, that is, is classified more
Refinement, different steel and specification have different rolling force coefficient limit values, while paying attention to observing each rack load condition.If certain machine
Frame roll-force learning coefficient has reached limit value, and tube rolling simulation value and actual value deviation are larger, then appropriate adjustment (increases or subtracts
It is small) rack rolling force coefficient limit value, amplitude is adjusted every time between 0.01~0.05, to reach better control effect.This
Outside, it during adjustment, needs to pay attention to mill load situation constantly, prevents equipment breakdown.
Claims (1)
1. a kind of rolling force coefficient limit value divider lattice control method, which is characterized in that the specific method is as follows:
1) divider lattice control mode is taken to rolling force coefficient limit value；
2) it determines the initial value of each specification rolling force coefficient limit value: according to the soft or hard degree of steel, strip produced being divided into 3
Seed type is that hardness is soft-type respectively, the moderate type of hardness and the inclined gravity die of hardness, 3 kinds of rolling force coefficient limit values is provided, as initial
Value, 3 kinds of rolling force coefficient limit value initial values are shown in Table 1, then according to practical condition, optimize adjustment to roll-force, often
The amplitude of secondary adjustment can be adjusted repeatedly 0.01~0.05, realize that control effect optimizes by this method；
The differentiation of strip hardness is using carbon equivalent as judgment basis, and carbon equivalent calculation formula is as follows:
CEQ=C+Mn/6+Si/24
In formula: CEQ: carbon equivalent value；
C: carbon element content in steel billet；
Mn: manganese element content in steel billet；
Si: silicon content in steel billet；
0.18% hardness of CEQ < is soft-type；
0.18%≤CEQ <, 0.26% hardness normal type；
The inclined gravity die of the hardness of CEQ >=0.26%.
Table 1:
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710569364.5A CN109248927B (en) | 2017-07-13 | 2017-07-13 | rolling force coefficient limiting value specification control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710569364.5A CN109248927B (en) | 2017-07-13 | 2017-07-13 | rolling force coefficient limiting value specification control method |
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| CN109248927A true CN109248927A (en) | 2019-01-22 |
| CN109248927B CN109248927B (en) | 2019-12-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114367545A (en) * | 2021-12-09 | 2022-04-19 | 北京首钢自动化信息技术有限公司 | Method and device for correcting rolling force |
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| JP2000042602A (en) * | 1998-07-14 | 2000-02-15 | Sms Schloeman Siemag Ag | Method for pre-adjusting cold deforming equipment |
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| CN101992220A (en) * | 2009-08-20 | 2011-03-30 | 宝山钢铁股份有限公司 | Method for controlling rigidity of mill housing |
| CN102978307A (en) * | 2012-11-29 | 2013-03-20 | 德龙钢铁有限公司 | Process for reducing production of pipeline steel |
| CN103934278A (en) * | 2013-01-23 | 2014-07-23 | 宝山钢铁股份有限公司 | Hot-rolling and finish-rolling strip steel thickness control method |
| CN104259221A (en) * | 2014-10-13 | 2015-01-07 | 南京钢铁股份有限公司 | Method for restraining pass jump phenomena during steel rolling process |
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2017
- 2017-07-13 CN CN201710569364.5A patent/CN109248927B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0616559B1 (en) * | 1991-12-13 | 1995-09-27 | Siemens Aktiengesellschaft | Rolling schedule calculation process |
| JP2000042602A (en) * | 1998-07-14 | 2000-02-15 | Sms Schloeman Siemag Ag | Method for pre-adjusting cold deforming equipment |
| CN1814365A (en) * | 2005-02-02 | 2006-08-09 | 宝山钢铁股份有限公司 | Method for improving hot-rolling draught pressure forecast precision utilizing band steel chemical composition data |
| CN101992220A (en) * | 2009-08-20 | 2011-03-30 | 宝山钢铁股份有限公司 | Method for controlling rigidity of mill housing |
| CN102978307A (en) * | 2012-11-29 | 2013-03-20 | 德龙钢铁有限公司 | Process for reducing production of pipeline steel |
| CN103934278A (en) * | 2013-01-23 | 2014-07-23 | 宝山钢铁股份有限公司 | Hot-rolling and finish-rolling strip steel thickness control method |
| CN104259221A (en) * | 2014-10-13 | 2015-01-07 | 南京钢铁股份有限公司 | Method for restraining pass jump phenomena during steel rolling process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114367545A (en) * | 2021-12-09 | 2022-04-19 | 北京首钢自动化信息技术有限公司 | Method and device for correcting rolling force |
| CN114367545B (en) * | 2021-12-09 | 2023-09-08 | 北京首钢自动化信息技术有限公司 | Rolling force correction method and device |
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