CN104772343A - Rigidity testing method based on TDC (technical dynamic controller) - Google Patents
Rigidity testing method based on TDC (technical dynamic controller) Download PDFInfo
- Publication number
- CN104772343A CN104772343A CN201510197039.1A CN201510197039A CN104772343A CN 104772343 A CN104772343 A CN 104772343A CN 201510197039 A CN201510197039 A CN 201510197039A CN 104772343 A CN104772343 A CN 104772343A
- Authority
- CN
- China
- Prior art keywords
- pressure
- value
- roll
- rigidity
- target
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention discloses a rigidity testing method based on a TDC (technical dynamic controller). The rigidity testing method comprises the following steps of 1, initially placing the position of a screwdown system; when the pressure of the initial position placing reaches the standard, executing the next step; when the pressure of the initial position placing does not reach the standard, stopping the rigidity testing; 2, enabling the screwdown system to sequentially trigger pressure rings, and giving out the target pressure value; if each pressure ring meets the three conditions, namely that the pressure rings sequentially reach the corresponding target value, each target value meets the pressure difference requirement and each pressure ring is in a rigidity experiment mode, completing the screwdown testing, and executing the next step; if each pressure ring fails to meet the three conditions, stopping the rigidity testing; 3, enabling a control system to give a lifting target pressure value, enabling the screwdown system to sequentially trigger each pressure value, and lifting each pressure ring up to the setting pressure value; once the pressure is lifted up to the setting pressure value, placing the position of a roller gap to the setting value. The rigidity testing method has the characteristics that the rigidity of a rolling machine is quickly measured, and the accuracy and traceability of data are realized; the rigidity testing method can be applied to the technical field of steel rolling.
Description
Technical field
The present invention relates to technical field of steel rolling, particularly relate to a kind of stiffness test method based on TDC (TechnicalDynamic Controller, technique dynamic controller (control system developed by Siemens)).
Background technology
When rolling, due to the effect of roll-force, milling train work block can produce certain elastic deformation, and it has a significant impact adjustment of rolling mill and band steel dimensions precision.Before rolled piece enters roll, the original roll gap of roll is set to S
0, when rolling rolling stock, under roll-force P effect, support is f in the elastic deformation that roll barrel center produces, if roll original roller type is cylindrical, then the rolled piece section shut out will in dolioform, and rolled piece thickness is also greater than S
0, namely
h＝S
0+f
In formula, h is rolled piece thickness;
S
0for the original roll gap of roll;
F is support elastic deformation (elastic deformation of support in the middle part of roll barrel).
As can be seen here, the adjustment of support elastic deformation f and rolled piece thickness and the original roll gap of roll is closely related.The physical significance of mill modulus refers to the capacity of water of milling train working stand opposing elastic deformation, namely required during support generation unit (1mm) elastic deformation roll-force size, required roll-force is larger, then stiffness coefficient larger (namely elastic curve is steeper), show that milling train rigidity is larger and milling train elastic deformation is less, namely mill modulus represents the soft or hard degree of milling train working stand.
The result of support elastic deformation makes two roll axis produce relative translation, and actual drafts is reduced, and band steel exports thickness is greater than original gap values between rollers, influence zone steel longitudinal thickness.The ability of milling train working stand opposing longitudinal elasticity distortion is called milling train longitudinal rigidity, is called for short mill stiffness.
Can know that from the definition of mill stiffness the roll-force that rigidity often can be produced required for 1mm deformation by milling train calculates.
The whether accurate precision being directly connected to belt steel thickness and controlling of mill stiffness, therefore Measurement accuracy mill stiffness becomes the important process improving thickness and precision.
In China's Steel-rolling Industry, existing finishing mill is mostly by AGC (Automatic GaugeControl, (sheet material) gauge automatic control) control the rigidity that uses and memorial archway tension values is by look-up table gained, concrete data can with reference to the form of certain steel mill domestic in following table (F1 to F7 represents frame one to frame seven respectively):
For the band steel of rolling 3.00*1268 specification, " AGCM-F5 " rigidity value for using in F5 (i.e. frame five) control in Fig. 1, " LR5 " is F5 frame load relay, " F5AGC_ON " is F5AGC input, in Fig. 2, " F5FORCE " is F5 roll-force, the thickness deviation that in Fig. 3, " AGC_THICKErr (GM) " is GM mode computation, in Fig. 4, " AGCHG-F5 " is calculated thickness, finds out that vibration appears in F5 rigidity total length from curve:
As can be seen from the figure, after rigidity changes, the thickness that GM calculates there will be significantly Spline smoothing.
To the data acquisition of total length, we find process:
With 1250t segmentation, when being less than 1250t, the rigidity of tabling look-up is 518.32t/mm, and the spring of tabling look-up is 2333.90um; When being greater than 1250t, the rigidity of tabling look-up is 538.97t/mm, and the spring of tabling look-up is 2066.50um.(being the data on average above)
Front and back rigidity saltus step 20.65t/mm, Bounce distance saltus step 267.4um.
So violent roll gap adjustment not only can worsen the control accuracy of thickness, also can have a negative impact to the stability of kink (Fig. 5 is F5 mill stiffness use value simultaneously, in Fig. 6, " LP3_HeightFbk " is No. 3 looper height feedbacks, " LP4_HeightFbk " is No. 4 looper height feedbacks, " LP5_HeightFbk " is No. 5 looper height feedbacks, and " LP6_HeightFbk " is No. 6 looper height feedbacks).
Can be found out by contrast, there is high-frequency vibration in No. 5 kinks, the inaccurate direct influence of rolled stability of rigidity value of visible former use and thickness control accuracy in rolling during afterbody.
Rigidity is the important physical parameter of hot rolling mill, the accuracy of its data directly has influence on setting accuracy, the rolling stability and thickness and precision etc. of whole rolling model, domestic hot rolling mill is usually because mill roll-gap both sides injustice causes strip running deviation and causes steel scrap in the operation of rolling, the rigidity value simultaneously used in existing AGC control method is obtained by look-up table, the saltus step produced with the rigidity value of roll-force change in rolling process greatly have impact on the accuracy of AGC Controlling model, makes belt steel thickness precision be difficult to improve.For this reason, attempt in industry adopting the test of manual Rigidity Experiment, by operating personnel's manual depression and on lift press down system and reach each target pressure value, after putting in place, the certain roll-force in interval is paused 3 seconds, and the disadvantage of this way is, because finish rolling production line exists multiple frame, so test is once not only consuming time oversize, and subjective operating personnel there are differences lifting the understanding being pressed onto position, people causes the possibility of test result deviation large, cannot provide accurate, retrospective data for Rolling production.
Summary of the invention
The object of the invention is the deficiency in order to overcome above-mentioned background technology, providing a kind of stiffness test method based on TDC, having Fast Measurement mill stiffness, measurement data has accurate and retrospective feature.
A kind of stiffness test method based on TDC provided by the invention, comprise the steps: step one, press down system initially puts position, if at the appointed time, initial pendulum position pressure reaches initial value and then enters next step, if initially put position pressure at the appointed time not reach initial value, then stop the concurrent excess of export alarm of rigidity test; Step 2, press down system trigger each pressure rings with different target pressure successively and provide target pressure value, if at the appointed time, each pressure rings meets that pressure arrives respective desired value successively, each desired value meets differential pressure requirements and be in Rigidity Experiment pattern three conditions, then complete to press down and test and enter next step, if at the appointed time, each pressure rings does not meet aforementioned three conditions, then stop the concurrent excess of export alarm of rigidity test; Step 3, control system provide lifts target pressure value, and press down system triggers each pressure rings with different target pressure successively, and lifts in each pressure rings to setup pressure value, once pressure be lifted to setup pressure value, then roll gap pendulum position is to setting value.
In technique scheme, in described step 2, press down system triggers each pressure rings successively and after providing target pressure value, target frame is depressed into target roll-force with pressure rings, stops the some time at each sampled point; In described step 3, press down system triggers each pressure rings successively and lifts to setup pressure value by each pressure rings, and target frame, pressure rings to be lifted to target roll-force, stops the some time at each sampled point.
In technique scheme, described target frame has seven, and in described step 2, the target pressure value of frame one to frame three is 2000T, and the target pressure value of frame four to frame seven is 1800T, stops 1.14 seconds at each sampled point; In described step 3, the setup pressure value of frame one to frame seven is 300T, stops 1.14 seconds at each sampled point.
In technique scheme, the pressure of each pressure rings is by zero to target pressure value, target pressure value in the change procedure of setup pressure value, and pressure rings is every one section of interval, and control system calculates the mean value of roll-force and roll gap as a sampled point.
In technique scheme, control system is [800,2000] calculate the mean value of roll-force and roll gap as a sampled point every 50T in roll-force interval, in [300,800] roll-force interval, calculate the mean value of roll-force and roll gap as a sampled point every 100T.
In technique scheme, the process of each sampling comprises basic automatization and controls sampling plan and automatic process control system sampling plan, and it is the cycle send corresponding roll-force and roll gap value of feedback to automatic process control system sampling plan in real time with 128ms that basic automatization controls sampling plan.
In technique scheme, the mean value that control system often obtains a sample point just preserves this mean value.
In technique scheme, in described step 2, desired value meets differential pressure requirements and refers to [800,2000] in roll-force interval, when 50T calculating sampling point, roll both sides pressure reduction is less than 25T, in [300,800] roll-force interval, when 100T calculating sampling point, roll both sides pressure reduction is less than 50T.
In technique scheme, described press down system comprises hydraulic cylinder and motor, in described step one, motor initially puts position, if at the appointed time, motor is initially put a pressure and is reached initial value and then enter next step, if motor is initially put a pressure and do not reached initial value at the appointed time, then stops the concurrent excess of export alarm of rigidity test; In described step 2, hydraulic cylinder triggers each pressure rings with different target pressure successively and provides target pressure value, if at the appointed time, each pressure rings meets that pressure arrives respective desired value successively, each desired value meets differential pressure requirements and be in Rigidity Experiment pattern three conditions, then complete to press down and test and enter next step, if at the appointed time, each pressure rings does not meet aforementioned three conditions, then stop the concurrent excess of export alarm of rigidity test; In described step 3, control system provides lifts target pressure value, and hydraulic cylinder triggers each pressure rings with different target pressure successively, and lifts in each pressure rings to setup pressure value, once pressure be lifted to setup pressure value, then roll gap pendulum position is to setting value.
In technique scheme, in described step one, press down system carries out automatic acyclic homologically trioial before initially putting position.
The present invention is based on the stiffness test method of TDC, there is following beneficial effect: the present invention achieves the accurate control to press down system and roll in whole rigidity test process, the numerical analysis machinery deformation situation of memorial archway under different draught pressure recorded by TDC controller, the result of Rigidity Experiment is to the setting of automatic process control system rolling model and THICKNESS CONTROL model parameter and have great reference value to the change of roll gap in the operation of rolling, the analysis of milling train outlet template.The present invention has very high complexity in programming, need the situation considering roll-force fluctuation interference, program to realize the judgement put in place at each target roll-force sample point actual pressure, the triggering successively of target roll-force, the filtering also automatic computing record of the actual draught pressure of sample point, the filtering also automatic computing record of the actual roll gap of sample point, automatically the several functions such as the mill stiffness value of each sample point are calculated by the record result of the actual draught pressure of sampled point and roll gap, to the sequential of programming, logic, arithmetic speed, the requirement that result of calculation stores is very high.
The present invention at home some finish rolling production line has done test operation, make multiple frame can carry out automatic rigidity test simultaneously, greatly save the testing time, for automatic process control system model provides rigidity data accurately, the thickness and precision of rolling stability and band steel is improved greatly.
Accompanying drawing explanation
Fig. 1 be existing rigidity look-up table at home certain steel mill use time frame five use rigidity value schematic diagram;
Fig. 2 be existing rigidity look-up table at home certain steel mill use time frame five use roll-force numerical value schematic diagram;
The thickness deviation values schematic diagram of the GM mode computation that Fig. 3 uses for frame five when certain steel mill uses at home for existing rigidity look-up table;
The one-tenth-value thickness 1/10 schematic diagram that Fig. 4 calculates for frame five when certain steel mill uses at home for existing rigidity look-up table;
Fig. 5 be existing rigidity look-up table at home certain steel mill use time frame five rigidity actual value schematic diagram;
Fig. 6 is the altitude feedback value schematic diagram of existing rigidity look-up table No. five kinks of frame five correspondence when certain steel mill uses at home;
Fig. 7 is the schematic flow sheet of the stiffness test method that the present invention is based on TDC;
Fig. 8 is the contrast schematic diagram of pressure set-point and pressure feedback value in the stiffness test method that the present invention is based on TDC;
Fig. 9 is sampled value filtered preservation numerical value schematic diagram in the stiffness test method that the present invention is based on TDC;
Figure 10 is the rigidity data matched curve figure in the stiffness test method that the present invention is based on TDC after sampling filter.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail, but this embodiment should not be construed as limitation of the present invention.
In Fig. 1 to Fig. 6, existing rigidity look-up table is existing in the introduction describes, and does not repeat them here.
See Fig. 7, the present invention is based on the stiffness test method of TDC, comprise the steps:
Step one, automatically acyclic homologically trioial, motor initially puts position, if at the appointed time, in the present embodiment, the described stipulated time is 3 ~ 7S, in optimum embodiment, the described stipulated time is 5S, motor is initially put a pressure and is reached initial value and then enter next step, if motor is initially put a pressure and do not reached initial value at the appointed time, then stops the concurrent excess of export alarm of rigidity test;
Step 2, hydraulic cylinder triggers each pressure rings with different target pressure successively and provides target pressure value, target frame is depressed into target roll-force with pressure rings, described target frame has seven, the target pressure value of frame one to frame three is 2000T, the target pressure value of frame four to frame seven is 1800T, 1.14 seconds are stopped at each sampled point, the process of each sampling comprises basic automatization and controls sampling plan and automatic process control system sampling plan, it is the cycle send corresponding roll-force and roll gap value of feedback to automatic process control system sampling plan in real time with 128ms that basic automatization controls sampling plan, the mean value that control system often obtains a sample point just preserves this mean value, if at the appointed time, in the present embodiment, the described stipulated time is 3 ~ 7S, in optimum embodiment, the described stipulated time is 5S, each pressure rings meets pressure and arrives respective desired value successively, each desired value meets differential pressure requirements and (refers to [800, 2000] in roll-force interval, when 50T calculating sampling point, roll both sides pressure reduction is less than 25T, [300, 800] in roll-force interval, when 100T calculating sampling point, roll both sides pressure reduction is less than 50T) and be in Rigidity Experiment pattern three conditions, then complete to press down and test and enter next step, if at the appointed time, each pressure rings does not meet aforementioned three conditions, then stop the concurrent excess of export alarm of rigidity test,
Step 3, control system provides lifts target pressure value, hydraulic cylinder triggers each pressure rings with different target pressure successively, and lift to setup pressure value by each pressure rings, target frame is pressure rings to be lifted to target roll-force, the setup pressure value of frame one to frame seven is 300T, 1.14 seconds are stopped at each sampled point, the pressure of each pressure rings is by zero to target pressure value, target pressure value is in the change procedure of setup pressure value, pressure rings is every one section of interval, control system calculates the mean value of roll-force and roll gap as a sampled point, wherein, control system is [800, 2000] mean value of roll-force and roll gap is calculated as a sampled point every 50T in roll-force interval, [300, 800] mean value of roll-force and roll gap is calculated as a sampled point every 100T in roll-force interval, the process of each sampling comprises basic automatization and controls sampling plan and automatic process control system sampling plan, it is the cycle send corresponding roll-force and roll gap value of feedback to automatic process control system sampling plan in real time with 128ms that basic automatization controls sampling plan, the mean value that control system often obtains a sample point just preserves this mean value, once pressure be lifted to setup pressure value, then roll gap pendulum position is to setting value.
Operating process of the present invention and principle specific as follows:
One, Rigidity Experiment step
(1) milling train is in acyclic homologically trioial speed;
(2) HMI (Human Machine Interface, man-machine interface) acyclic homologically trioial picture increases by nine function buttons, is respectively:
" Rigidity Experiment ": turn over function (click is 1, then point is 0), allows to carry out automatic Rigidity Experiment when " Rigidity Experiment " button is 1;
" request of F1 Rigidity Experiment ": pulse signal, clicks this button, starts to carry out F1 Rigidity Experiment;
" request of F2 Rigidity Experiment " ... " request of F7 Rigidity Experiment " same F1 of push button function, pulse signal, starts the experiment of each housing rigidity after click;
Realize both having allowed that each frame is single does Rigidity Experiment by these nine buttons, also allow seven frames to do the function of testing simultaneously;
(3) select " Rigidity Experiment " and when having " Rigidity Experiment request " corresponding frame start to do Rigidity Experiment;
(4) Rigidity Experiment strategy:
(F1-F3 target roll-force is for 2000T to be depressed into target roll-force with pressure rings, F4-F7 target roll-force is 1800T), again so that pressure rings to lift to 300T, transfer position control to after each sample point stops some seconds (calculating maximum support roller girth divided by each frame acyclic homologically trioial speed according to most big roller footpath) and carry out pendulum position.
Two, automatic process control system sampling plan
Organic frame does in the process of Rigidity Experiment, it is the cycle send corresponding roll-force and roll gap value of feedback to automatic process control system sampling plan in real time with 128ms that basic automatization controls sampling plan, and automatic process control system sampling plan carries out sampling voluntarily according to automatic process control system sampling plan and the basic automatization Rigidity Calculation rule controlled between sampling plan and calculates.
Three, basic automatization controls sampling plan
Basic automatization control sampling plan is adopted and is a little commonly used in rolling zone comparatively intensive in each frame, outer comparatively rough between conventional rolling zone.
For ensureing the accurate elimination mill gap of rigidity data, before rigidity test, automatic acyclic homologically trioial need be carried out once, after automatic acyclic homologically trioial completes, possess rigidity test condition, operating personnel are in HMI picture and selecting " Rigidity Experiment pattern ", make milling train be in Rigidity Experiment environment, after external condition possesses, select " the Rigidity Experiment request " of HMI picture, now start Rigidity Experiment, according to the flow chart of Rigidity Experiment see Fig. 7.
Rigidity is the important physical parameter of hot rolling mill, the accuracy of its data directly has influence on setting accuracy, the rolling stability and thickness and precision etc. of whole rolling model, domestic hot rolling mill is usually because mill roll-gap both sides injustice causes strip running deviation and causes steel scrap in the operation of rolling, the rigidity value simultaneously used in existing AGC control method is obtained by look-up table, the saltus step produced with the rigidity value of roll-force change in rolling process greatly have impact on the accuracy of AGC Controlling model, makes belt steel thickness precision be difficult to improve.For this reason, attempt in industry adopting the test of manual Rigidity Experiment, by operating personnel's manual depression and on lift press down system and reach each target pressure value, after putting in place, the certain roll-force in interval is paused 3 seconds, and the disadvantage of this way is, because finish rolling production line exists multiple frame, so test is once not only consuming time oversize, and subjective operating personnel there are differences lifting the understanding being pressed onto position, people causes the possibility of test result deviation large, cannot provide accurate, retrospective data for Rolling production.The present invention at home some finish rolling production line has done test operation, make multiple frame can carry out automatic rigidity test simultaneously, greatly save the testing time, for automatic process control system model provides rigidity data accurately, the thickness and precision of rolling stability and band steel is improved greatly.
Automatic Rigidity Experiment function requires complexity in programming, need the situation considering roll-force fluctuation interference, also to realize the judgement put in place at each target roll-force sample point actual pressure, the triggering successively of target roll-force, the filtering also automatic computing record of the actual draught pressure of sample point, the filtering also automatic computing record of the actual roll gap of sample point, automatically the several functions such as the mill stiffness value of each sample point are calculated by the record result of the actual draught pressure of sampled point and roll gap, to the sequential of programming, logic, arithmetic speed, the requirement that result of calculation stores is very high.
The correlator function related to is described as follows:
One, the automatic given function of pressure rings goal pressure
The automatic given function of pressure rings goal pressure: in Rigidity Experiment, target frame is depressed into target roll-force with pressure rings, and (F1-F3 target roll-force is for 2000T, F4-F7 target roll-force is 1800T), again so that pressure rings to lift to 300T, each sample point stops 1.14 seconds (calculating maximum support roller girth divided by each frame acyclic homologically trioial speed according to most big roller footpath).
Two, sampled point automatic filter function
Average function in sampled point: [800,2000] in 50T (± 3) interval, ask the mean value of roll-force and roll gap as a sampled point in roll-force interval, in 100T (± 5) interval, ask the mean value of roll-force and roll gap as a sampled point in [300,800] roll-force interval.
Three, the automatic hold function of sampled data
The automatic hold function of sampled point average: the mean value that program often obtains a sample point just preserves, automatically for asking for this sampled point rigidity afterwards.
Through the triggering of program Rigidity Experiment function program, after starting to carry out Rigidity Experiment, goal pressure is carried out automatically given, specifically see Fig. 8.
In figure, curve 1 is Rigidity Experiment automatic pressure given curve, and a non-compact district goal pressure of adopting is spaced apart 100T, adopts a compact district goal pressure and is spaced apart 50T;
Curve 2 is the pressure feedback signal of roll both sides (active side and transmission side) sum;
Curve 3 is the mean value of automatically trying to achieve in each sample point program;
In program to the value arrangements after the filtered automatic preservation of each sample point sampled value of actual feedback as shown in Figure 9.
See Figure 10, by the aforementioned rigidity data obtained, fit to curve synoptic diagram.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
The content be not described in detail in this description belongs to the known prior art of professional and technical personnel in the field.
Claims (10)
1. based on a stiffness test method of TDC, it is characterized in that: comprise the steps:
Step one, press down system initially put position, if at the appointed time, initial pendulum position pressure reaches initial value and then enters next step, if initially put position pressure at the appointed time not reach initial value, then stops the concurrent excess of export alarm of rigidity test;
Step 2, press down system trigger each pressure rings with different target pressure successively and provide target pressure value, if at the appointed time, each pressure rings meets that pressure arrives respective desired value successively, each desired value meets differential pressure requirements and be in Rigidity Experiment pattern three conditions, then complete to press down and test and enter next step, if at the appointed time, each pressure rings does not meet aforementioned three conditions, then stop the concurrent excess of export alarm of rigidity test;
Step 3, control system provide lifts target pressure value, and press down system triggers each pressure rings with different target pressure successively, and lifts in each pressure rings to setup pressure value, once pressure be lifted to setup pressure value, then roll gap pendulum position is to setting value.
2. the stiffness test method based on TDC according to claim 1, it is characterized in that: in described step 2, press down system triggers each pressure rings successively and after providing target pressure value, target frame is depressed into target roll-force with pressure rings, stops the some time at each sampled point; In described step 3, press down system triggers each pressure rings successively and lifts to setup pressure value by each pressure rings, and target frame, pressure rings to be lifted to target roll-force, stops the some time at each sampled point.
3. the stiffness test method based on TDC according to claim 2, it is characterized in that: described target frame has seven, in described step 2, the target pressure value of frame one to frame three is 2000T, the target pressure value of frame four to frame seven is 1800T, stops 1.14 seconds at each sampled point; In described step 3, the setup pressure value of frame one to frame seven is 300T, stops 1.14 seconds at each sampled point.
4. the stiffness test method based on TDC according to claim 3, it is characterized in that: the pressure of each pressure rings by zero to target pressure value, target pressure value in the change procedure of setup pressure value, pressure rings is every one section of interval, and control system calculates the mean value of roll-force and roll gap as a sampled point.
5. the stiffness test method based on TDC according to claim 4, it is characterized in that: control system is [800,2000] mean value of roll-force and roll gap is calculated as a sampled point every 50T in roll-force interval, the mean value of roll-force and roll gap is calculated as a sampled point every 100T in [300,800] roll-force interval.
6. the stiffness test method based on TDC according to claim 5, it is characterized in that: the process of each sampling comprises basic automatization and controls sampling plan and automatic process control system sampling plan, and it is the cycle send corresponding roll-force and roll gap value of feedback to automatic process control system sampling plan in real time with 128ms that basic automatization controls sampling plan.
7. the stiffness test method based on TDC according to claim 6, is characterized in that: the mean value that control system often obtains a sample point just preserves this mean value.
8. the stiffness test method based on TDC according to claim 7, it is characterized in that: in described step 2, desired value meets differential pressure requirements and refers to [800,2000] in roll-force interval, when 50T calculating sampling point, roll both sides pressure reduction is less than 25T, in [300,800] roll-force interval, when 100T calculating sampling point, roll both sides pressure reduction is less than 50T.
9. the stiffness test method based on TDC according to any one of claim 1 to 8, it is characterized in that: described press down system comprises hydraulic cylinder and motor, in described step one, motor initially puts position, if at the appointed time, motor is initially put a pressure and is reached initial value and then enter next step, if motor is initially put a pressure and do not reached initial value at the appointed time, then stops the concurrent excess of export alarm of rigidity test; In described step 2, hydraulic cylinder triggers each pressure rings with different target pressure successively and provides target pressure value, if at the appointed time, each pressure rings meets that pressure arrives respective desired value successively, each desired value meets differential pressure requirements and be in Rigidity Experiment pattern three conditions, then complete to press down and test and enter next step, if at the appointed time, each pressure rings does not meet aforementioned three conditions, then stop the concurrent excess of export alarm of rigidity test; In described step 3, control system provides lifts target pressure value, and hydraulic cylinder triggers each pressure rings with different target pressure successively, and lifts in each pressure rings to setup pressure value, once pressure be lifted to setup pressure value, then roll gap pendulum position is to setting value.
10. the stiffness test method based on TDC according to any one of claim 1 to 8, is characterized in that: in described step one, press down system carries out automatic acyclic homologically trioial before initially putting position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510197039.1A CN104772343B (en) | 2015-04-23 | 2015-04-23 | A kind of stiffness test method based on TDC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510197039.1A CN104772343B (en) | 2015-04-23 | 2015-04-23 | A kind of stiffness test method based on TDC |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104772343A true CN104772343A (en) | 2015-07-15 |
| CN104772343B CN104772343B (en) | 2016-09-14 |
Family
ID=53614284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510197039.1A Expired - Fee Related CN104772343B (en) | 2015-04-23 | 2015-04-23 | A kind of stiffness test method based on TDC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104772343B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426687A (en) * | 2018-02-27 | 2018-08-21 | 首钢京唐钢铁联合有限责任公司 | A kind of stiffness measurement method and device of hot-rolled coiler pinch roll device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62230422A (en) * | 1986-03-31 | 1987-10-09 | Kobe Steel Ltd | Measuring method for mill rigidity with consideration for roll eccentricity |
| DE3831331A1 (en) * | 1988-09-15 | 1990-03-29 | Betr Forsch Inst Angew Forsch | DEVICE MEASURING ROLL |
| CN101452278A (en) * | 2007-12-07 | 2009-06-10 | 上海宝钢工业检测公司 | On-line dynamic stiffness test method for hydraulic press down system for hot-rolled finishing mill AGC |
| CN101566538A (en) * | 2009-05-27 | 2009-10-28 | 东北大学 | On-line acquisition method for plasticity coefficient of rolled piece during rolling of medium plate |
| CN201804225U (en) * | 2010-07-15 | 2011-04-20 | 武汉钢铁(集团)公司 | Simulation steel rolling system of hot continuous rolling |
| CN102179414A (en) * | 2011-03-07 | 2011-09-14 | 上海优控科技有限公司 | Computing method of rigidity of novel rolling mill |
| CN104338755A (en) * | 2013-07-24 | 2015-02-11 | 宝山钢铁股份有限公司 | Dynamic calculation method of cold-rolling mill rigidity |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1296251A2 (en) * | 1985-01-09 | 1987-03-15 | Череповецкий Филиал Северо-Западного Заочного Политехнического Института | Force transducer of rolling |
-
2015
- 2015-04-23 CN CN201510197039.1A patent/CN104772343B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62230422A (en) * | 1986-03-31 | 1987-10-09 | Kobe Steel Ltd | Measuring method for mill rigidity with consideration for roll eccentricity |
| DE3831331A1 (en) * | 1988-09-15 | 1990-03-29 | Betr Forsch Inst Angew Forsch | DEVICE MEASURING ROLL |
| CN101452278A (en) * | 2007-12-07 | 2009-06-10 | 上海宝钢工业检测公司 | On-line dynamic stiffness test method for hydraulic press down system for hot-rolled finishing mill AGC |
| CN101566538A (en) * | 2009-05-27 | 2009-10-28 | 东北大学 | On-line acquisition method for plasticity coefficient of rolled piece during rolling of medium plate |
| CN201804225U (en) * | 2010-07-15 | 2011-04-20 | 武汉钢铁(集团)公司 | Simulation steel rolling system of hot continuous rolling |
| CN102179414A (en) * | 2011-03-07 | 2011-09-14 | 上海优控科技有限公司 | Computing method of rigidity of novel rolling mill |
| CN104338755A (en) * | 2013-07-24 | 2015-02-11 | 宝山钢铁股份有限公司 | Dynamic calculation method of cold-rolling mill rigidity |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426687A (en) * | 2018-02-27 | 2018-08-21 | 首钢京唐钢铁联合有限责任公司 | A kind of stiffness measurement method and device of hot-rolled coiler pinch roll device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104772343B (en) | 2016-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104324948B (en) | A kind of rougher of hot strip mill process rolled piece width control method | |
| CN103341503B (en) | Self-adaptation convexity change hot rolled plate shape control model | |
| CN102172639B (en) | Dynamic substitution regulating method for excessive bending of working roll of cold rolling mill | |
| CN105834225B (en) | The method for controlling thickness and control system of cold continuous rolling dynamic variable specification rolling | |
| CN102581037B (en) | Method for adjusting zero position of two sides of hot continuous rolling mill | |
| CN103252350B (en) | Leveling method for finishing mill after roller changing | |
| CN102989784A (en) | Fixed-width press plate blank width control method | |
| CN103831304B (en) | A kind of hot continuous rolling intermediate blank target width computational methods and system | |
| CN105268748A (en) | Hot rolling load distribution method based on product classification | |
| CN110756592B (en) | Method and device for controlling tail width of hot-rolled strip steel | |
| CN104324949B (en) | A kind of acquisition methods of roughing vertical roll passage edger roll opening degree | |
| BE892959A (en) | STRIP LAMINATION | |
| CN104307886B (en) | A kind of large dead time AGC control method of composite rolling mill sandwich rolling | |
| CN110479770B (en) | Optimized control method for twenty-high rolling mill plate shape | |
| CN103861873B (en) | A kind of UCMW cold continuous rolling texturing rolling system and method | |
| CN106345818A (en) | Plate shape control method of special steel | |
| CN104772343A (en) | Rigidity testing method based on TDC (technical dynamic controller) | |
| CN104353675B (en) | The control method of a kind of planisher band head plate shape rolling parameter and planisher | |
| CN102873107B (en) | High synchronizing control method of pressing system of hot galvanizing skin pass machine | |
| CN108363355B (en) | Rolling edge covering track optimization method and system based on vision system | |
| CN105921525A (en) | Correction method for tail of strip of continuous rolling unit | |
| CN108363354B (en) | Rolling edge covering quality detection method and system based on vision system | |
| CN111112345B (en) | Control method for automatically compensating deviation generated by calibration of horizontal rolling mill | |
| CN112246880B (en) | Twenty-high rolling mill strip shape optimization control method based on feedforward-middle shifting compensation | |
| CN107520255A (en) | A kind of self-learning type inlet of rolling mill thickness optimization method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170728 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: WUHAN IRON AND STEEL Co.,Ltd. Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: WUHAN IRON AND STEEL (GROUP) Corp. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 |