CN107626743B - A kind of Hot Line finish rolling step pad automatic positioning method - Google Patents
A kind of Hot Line finish rolling step pad automatic positioning method Download PDFInfo
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- CN107626743B CN107626743B CN201610569274.1A CN201610569274A CN107626743B CN 107626743 B CN107626743 B CN 107626743B CN 201610569274 A CN201610569274 A CN 201610569274A CN 107626743 B CN107626743 B CN 107626743B
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Abstract
A kind of Hot Line finish rolling step pad automatic positioning method, the specific method is as follows: the first compensation rate according to required for working roll roller diameter of computer, calculate the thickness of going up or down stairway pad, calculation formula are as follows: upper step pad thickness equations: Tst1=H1- (S0+d1+D1/2)-h1；Downstairs mat thickness calculation formula: Tst2=h2- (d2+D2/2)+H2；Computer reads positioning stroke corresponding to step pad compensation thickness, and the automatic positioning of step pad is realized in control step-pad hydraulic cylinder movement.Compared with prior art, the beneficial effects of the present invention are: a kind of Hot Line finish rolling step pad automatic positioning method, makes step pad realize automated location control, roll change speed is improved, to improve production efficiency.
Description
Technical field
Hot-strip production technical field of the present invention more particularly to a kind of Hot Line finish rolling step pad automatic positioning method.
Background technique
For hot-strip during rolling, the surface flatness of finishing mill working roll has the tendency that deterioration.In this way, work
Roller is just unable to satisfy the requirement of technique in use for some time, needs replacing working roll.Machine on new working roll, is changed
Old working roll is put into be ground between grinding roller after, then use on the machine, form circulation.In machine on every suit working roll, due to it with
It is different in the working roll roller diameter of machine, thus just need step pad with different thickness come the variation of compensation work roller roller diameter to rolling line
Height bring influences.
Every frame finishing mill is divided into upper and lower two ladder backing plates.It is respectively intended to compensate the variation of upper and lower working roll roller diameter.Rank
Ladder pad is stairstepping, comes up increase highly by lateral line.For certain 2150 line of steel mill's hot rolling at debugging initial stage, step pad can not be certainly
Dynamic positioning.It can only lean on and maintain roll change manually.Mm finishing mill unit one shares 6 frame finishing mills.Armrest moves roller, and the time is longer, serious shadow
Ring production efficiency.
Summary of the invention
The object of the present invention is to provide a kind of Hot Line finish rolling step pad automatic positioning methods, and step pad is made to realize automatic position
Control is set, roll change speed is improved, to improve production efficiency.
To achieve the above object, the present invention is implemented with the following technical solutions:
A kind of Hot Line finish rolling step pad automatic positioning method, the specific method is as follows:
1) the first compensation rate according to required for working roll roller diameter of computer, calculates the thickness of going up or down stairway pad, calculates public
Formula are as follows:
Upper step pad thickness equations: Tst1=H1- (S0+d1+D1/2)-h1；
Downstairs mat thickness calculation formula: Tst2=h2- (d2+D2/2)+H2；
Clearance distance is 1760mm~1780mm on H1- mill housing；
Clearance distance is 1740mm~1760mm under H2- mill housing；
The upper ladder mat thickness of Tst1-；
Tst2- downstairs mat thickness；
D1- top backing up roll roller diameter；
D2- lower support roll roller diameter；
D1- top working roll roller diameter；
D2- bottom working roll roller diameter；
Absolute altitude on h1- rolling line is 0mm by technique requirement value；
Absolute altitude under h2- rolling line is 0mm by technique requirement value；
S0- finishing mill opens roll gap fastly, is 90mm by technique requirement value；
2) 1 is shown in Table as the setting position stroke of step pad corresponding to upper ladder mat thickness, and table 2 is downstairs mat thickness institute
The setting position stroke of corresponding step pad；
Corresponding positioning travel schedule (unit mm) of ladder mat thickness on table 1
| Thickness | 0 | 30 | 64 | 98 | 132 | 165 | 185 |
| Stroke | 0 | 180 | 360 | 540 | 720 | 900 | 1080 |
Corresponding positioning travel schedule (unit mm) of 2 downstairs mat thickness of table
| Thickness | 0 | 100 | 115 | 130 | 145 | 160 | 175 |
| Stroke | 0 | 255 | 405 | 555 | 705 | 855 | 1005 |
| Thickness | 190 | 205 | 220 | 235 | 250 | 265 | |
| Stroke | 1155 | 1305 | 1455 | 1605 | 1755 | 1905 |
Computer reads positioning stroke corresponding to ladder mat thickness from Tables 1 and 2, and control step-pad hydraulic cylinder is dynamic
Make, realizes the automatic positioning of step pad.
Compared with prior art, the beneficial effects of the present invention are:
A kind of Hot Line finish rolling step pad automatic positioning method makes step pad realize automated location control, improves roll change speed
Degree, to improve production efficiency.
Detailed description of the invention
Fig. 1 is step pad positioning system components connection figure.
Fig. 2 is that step pad automatically controls positioning system electrical schematic.
Specific embodiment
Embodiments of the present invention are further illustrated with reference to the accompanying drawing:
A kind of Hot Line finish rolling step pad automatic positioning method, the specific method is as follows:
1) the first compensation rate according to required for working roll roller diameter of computer, calculates the thickness of going up or down stairway pad, calculates public
Formula are as follows:
Upper step pad thickness equations: Tst1=H1- (S0+d1+D1/2)-h1；
Downstairs mat thickness calculation formula: Tst2=h2- (d2+D2/2)+H2；
Clearance distance is 1760mm~1780mm on H1- mill housing；
Clearance distance is 1740mm~1760mm under H2- mill housing；
The upper ladder mat thickness of Tst1-；
Tst2- downstairs mat thickness；
D1- top backing up roll roller diameter；
D2- lower support roll roller diameter；
D1- top working roll roller diameter；.
D2- bottom working roll roller diameter；
Absolute altitude on h1- rolling line is 0mm by technique requirement value；
Absolute altitude under h2- rolling line is 0mm by technique requirement value；
S0- finishing mill opens roll gap fastly, is 90mm by technique requirement value；
2) 1 is shown in Table as the setting position stroke of step pad corresponding to upper ladder mat thickness, and table 2 is downstairs mat thickness institute
The setting position stroke of corresponding step pad；
Corresponding positioning travel schedule (unit mm) of ladder mat thickness on table 1
| Thickness | 0 | 30 | 64 | 98 | 132 | 165 | 185 |
| Stroke | 0 | 180 | 360 | 540 | 720 | 900 | 1080 |
Corresponding positioning travel schedule (unit mm) of 2 downstairs mat thickness of table
| Thickness | 0 | 100 | 115 | 130 | 145 | 160 | 175 |
| Stroke | 0 | 255 | 405 | 555 | 705 | 855 | 1005 |
| Thickness | 190 | 205 | 220 | 235 | 250 | 265 | |
| Stroke | 1155 | 1305 | 1455 | 1605 | 1755 | 1905 |
Computer reads positioning stroke corresponding to ladder mat thickness from Tables 1 and 2, and control step-pad hydraulic cylinder is dynamic
Make, realizes the automatic positioning of step pad.
It includes that (dynamic controlled stage calculates DDC grades of computers that step pad matched with this method, which automatically controls positioning system,
Machine), A201S (MEN) counter substrate, M47 counter plate, MTS magnetic scale, isolated amplifier, electromagnetic proportional valve, isolation amplification
Device, A201S counter substrate and M47 counter plate are mounted in DDC grades of computer control cabinets, and MTS magnetic scale is mounted on step pad
In hydraulic cylinder, electromagnetic proportional valve is mounted on hydraulic valve platform.
CPU control unit, PROFIBUS-DP network interface card and VersaMax AO module are equipped in DDC grades of computers.
After working roll is ground in grinding roller workshop, measured and by being ground worker by upper and lower step pad thickness equations
In relevant parameter be entered into DDC grades of computers, upper and lower step pad thickness compensation amount is calculated through computer.Computer
It is had a snack according to ladder in upper and lower step pad thickness compensation amount reading Tables 1 and 2 and repays the corresponding positioning stroke of thickness.Read rank
The upper limit value of ladder mat thickness is taken when ladder pad stroke, such as: when the step pad thickness compensation amount being calculated is 0-30mm, rank
Terraced mat thickness compensation measures 30mm, and step pad stroke reads 180mm；When the step pad thickness compensation amount being calculated is greater than 30mm
When less than or equal to 64mm, step pad thickness compensation measures 64mm, and step pad stroke reads 360mm, and so on.Due to computer
The upper limit value taken can with practical compensation rate there are overgauge, the overgauge in roll gap calibration with S0 (finishing mill opens roll gap fastly) come
Compensation, such as calculating step pad thickness compensation amount is 25mm, it is 30mm, step pad stroke that step pad thickness compensation, which measures upper limit value,
180mm is read, there are the overgauges of 5mm for the upper limit value and practical calculating compensation rate that computer takes, in roll gap calibration by S0 (essence
Milling train opens roll gap fastly) turn 5mm down.
See Fig. 1, Fig. 2, the electromagnetic proportional valve of step pad is given to be controlled by DDC grades of computers according to the step pad stroke of reading
It is fixed to set up, and is sent to VersaMax AO module by PROFIBUS-DP net, VersaMax AO module will by isolated amplifier
It is given to give electromagnetic proportional valve.Oil circuit is controlled by controlling the opening degree of electromagnetic proportional valve, finally drives step-pad hydraulic cylinder
Movement.The closed loop of step-pad hydraulic cylinder by feedback system that MTS magnetic scale, M47 counter plate and A201S counter substrate form Lai
Complete: MTS magnetic scale detects hydraulic cylinder travel, generates Gray code by MTS magnetic scale, is sent to A201S by M47 counter plate and counts
Then device substrate reaches the central processor CPU plate of DDC grades of computers, ultimately forms closed-loop control, complete the APC of step pad
Positioning.
Working roll is replaced in finish rolling each time, and step pad will do Automatic Positioning Control twice.It is to take out old working roll for the first time
When clear point.It is to walk setting position when filling new working roll for the second time.The Automatic Positioning Control of step pad, greatly subtracts
The process time of finishing mill replacement working roll is lacked.
Claims (1)
1. a kind of Hot Line finish rolling step pad automatic positioning method, which is characterized in that the specific method is as follows:
1) the first compensation rate according to required for working roll roller diameter of computer, calculates the thickness of going up or down stairway pad, calculation formula are as follows:
Upper step pad thickness equations: Tst1=H1- (S0+d1+D1/2)-h1；
Downstairs mat thickness calculation formula: Tst2=h2- (d2+D2/2)+H2；
Clearance distance is 1760mm~1780mm on H1- mill housing；
Clearance distance is 1740mm~1760mm under H2- mill housing；
The upper ladder mat thickness of Tst1-；
Tst2- downstairs mat thickness；
D1- top backing up roll roller diameter；
D2- lower support roll roller diameter；
D1- top working roll roller diameter；
D2- bottom working roll roller diameter；
Absolute altitude on h1- rolling line is 0mm by technique requirement value；
Absolute altitude under h2- rolling line is 0mm by technique requirement value；
S0- finishing mill opens roll gap fastly, is 90mm by technique requirement value；
2) 1 is shown in Table as the setting position stroke of step pad corresponding to upper ladder mat thickness, and table 2 is corresponding to downstairs mat thickness
Step pad setting position stroke；
Corresponding positioning travel schedule (unit mm) of ladder mat thickness on table 1
Corresponding positioning travel schedule (unit mm) of 2 downstairs mat thickness of table
Computer reads positioning stroke corresponding to ladder mat thickness from Tables 1 and 2, and control step-pad hydraulic cylinder movement is real
The automatic positioning of existing step pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610569274.1A CN107626743B (en) | 2016-07-18 | 2016-07-18 | A kind of Hot Line finish rolling step pad automatic positioning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610569274.1A CN107626743B (en) | 2016-07-18 | 2016-07-18 | A kind of Hot Line finish rolling step pad automatic positioning method |
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| Publication Number | Publication Date |
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| CN107626743A CN107626743A (en) | 2018-01-26 |
| CN107626743B true CN107626743B (en) | 2019-02-26 |
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| CN201610569274.1A Active CN107626743B (en) | 2016-07-18 | 2016-07-18 | A kind of Hot Line finish rolling step pad automatic positioning method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108817095B (en) * | 2018-04-28 | 2019-10-29 | 首钢京唐钢铁联合有限责任公司 | A kind of Finish Mill Roll Changing method and control device |
| CN111790758B (en) * | 2020-05-29 | 2022-07-15 | 首钢京唐钢铁联合有限责任公司 | Calibration method and automatic roll changing control method for lower step pad of finishing mill |
| CN114130831B (en) * | 2021-11-30 | 2023-05-09 | 山东钢铁集团日照有限公司 | Device and method for calibrating position of step pad on rolling mill |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5994507A (en) * | 1982-11-19 | 1984-05-31 | Toshiba Corp | Rolling mill |
| CN201105285Y (en) * | 2007-09-28 | 2008-08-27 | 大连华锐股份有限公司 | Novel rolling mill stepped shim device |
| CN105251785B (en) * | 2015-11-20 | 2018-03-16 | 武汉钢铁有限公司 | A kind of milling train downstairs pad position device for fast detecting and method |
| CN205217616U (en) * | 2015-12-29 | 2016-05-11 | 温州东南工业机械实业有限公司 | Ladder pad for rolling mill |
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