CN101625548B - Method for circularly controlling reeling hydraulic side guide pressure position of hot tandem rolling special steel - Google Patents
Method for circularly controlling reeling hydraulic side guide pressure position of hot tandem rolling special steel Download PDFInfo
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- CN101625548B CN101625548B CN2009100751531A CN200910075153A CN101625548B CN 101625548 B CN101625548 B CN 101625548B CN 2009100751531 A CN2009100751531 A CN 2009100751531A CN 200910075153 A CN200910075153 A CN 200910075153A CN 101625548 B CN101625548 B CN 101625548B
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Abstract
The invention relates to a method for circularly controlling a reeling hydraulic side guide pressure position of hot tandem rolling special steel, aiming to improve the edge quality of band steel. The method comprises the following steps: when a hot metal detector detects that the load of the band steel and reel band steel of special steel, i.e. reeling stainless steel, silicon steel, and the like, is greater than a target value, the band steel is judged to already enter a reeling machine, and then reeling hydraulic side guide control is carried out on the reeling hydraulic side guide pressure position to be circularly controlled, wherein the target value is generally 35 percent of the preset moment of the band steel; the reeling hydraulic side guide control which is firstly carried out is original control and is switched into position control after first alternate circulation time, and then the pressure and position control is realized according to the alternate circulation time till the hot metal detector completely detects the band steel and closes the alternate circulation control; the alternate circulation time is generally 1-10 seconds, and the pressure and position switching control is finally realized according to the debugged circulation time.
Description
Affiliated technical field
The present invention relates to a kind of hot-continuous-rolling strip steel reeling hydraulic side guide autocontrol method.
Background technology
On hot continuous rolling equipment, owing to batch and batch side when side is led equipment limit portion's problem and coil and lead and be pressure control, it is not very good causing hot tandem rolling special steel to batch strip edge portion quality always, cause that strip edge portion is gnawed, a large amount of pits of belt steel surface, especially stainless steel, silicon steel, cold rolling strip steel etc. are comparatively serious, and side is led also well damage of equipment simultaneously.Improve and batch strip edge portion quality, it is one of its key that the side that must improve hot rolling reeling band steel is led control.
Summary of the invention
The present invention seeks to overcoming the deficiency of above-mentioned prior art, a kind of hot tandem rolling special steel method for circularly controlling reeling hydraulic side guide pressure position that improves strip edge portion quality is provided.
Batch the zone at hot continuous rolling, major equipment has hot metal detector, batch that the front side is led, pinch roll, reel, help winding up roller etc.The inventive method be batch special steel such as stainless steel, silicon steel and when hot metal detector examine band steel and reel band steel load during greater than desired value, judge that the band steel has entered coiling machine, reeling hydraulic side guide control afterwards drops into the reeling hydraulic side guide pressure position cycle control, and reel band steel load desired value is generally 35% of band steel moment setting.At first the side guide pressure that batches of Tou Ruing is controlled to be former control, switches to position control after first alternate circulation time, and its position control reference value is according to following formula value:
Side was led actual position value+δ (1) when side was led position control reference value=switching
In the formula: δ is the position correction value, general value is 1-10mm, side is led actual position value and is come from the interior position transducer of side drain cylinder pressure, model is the RHM0360 of American MTS (Mei Tesi) company, the pressure reference value of batching side guide pressure control is former pressure control benchmark, does not belong to content of the present invention.The quality requirements to strip edge portion can't be satisfied in δ＜1, can squeeze and hinder the δ of strip edge portion＞10, can cause band steel end staggered floor, and scroll is nonconforming.
Realize pressure, position control by alternate circulation time subsequently, lose the band steel, finish alternate cycles control up to the hot metal detector inspection.Alternate circulation time T is generally 1-10 second, finally realizes pressure, position switching control by debugged circulation time.
The present invention is applicable to the improvement and the lifting of special steel coiling technique, is stainless steel, silicon steel etc. for 400 especially, can effectively avoid the bigger strip edge portion defective that causes of hydraulic pressure led because of the coiling machine front side, has improved the special steel product quality.Not only effectively guaranteed the stable of strip edge portion quality, and more made and batch control stabilization, reduced equipment investment, reduced flipper guide maintenance cost before the coiling machine, hot-strip limit portion and surface quality improve greatly, have obtained remarkable economic efficiency.
Embodiment
The invention process process mainly realizes in computer program automatically.According to steel grade and actual needs, at first select by the operative employee, afterwards by the one-level computing machine according to band steel tracking signal with select the signal input to batch side guide pressure, position cycle control program, batch side and lead the circulation automatic control program guaranteeing to drop under the prerequisite that the band steel normally batches.
Embodiment 1: when rolling silicon steel, select to come into operation this function by the operative employee at first according to actual needs, then when the band steel arrives, batch hot metal detector and reel band steel load by band steel tracking signal and judge side guide pressure, the position cycle control program of batching that drop into greater than desired value (band steel moment set 35%) back.Side drops into pressure control when leading the control beginning, the pressure reference value is that former pressure is set benchmark; Drop into position control after 3 seconds, side was led actual position value+2mm when side was led position control reference value=switching; After 3 seconds, drop into pressure control again, pressure, position control cycle alternation carry out subsequently, up to batching the band steel is that hot metal detector inspection mistake band steel retreats out side guide pressure, the position cycle control program of batching, confirm through actual debugging and on-the-spot scroll, the position correction value is+2mm that effect is better.
Embodiment 2: when rolling 400 are stainless steel, select to come into operation this function by the operative employee according to actual needs earlier, then when the band steel arrives, batch hot metal detector and reel band steel load by band steel tracking signal and judge side guide pressure, the position cycle control program of batching that drop into greater than desired value (band steel moment set 35%) back.Side drops into pressure control when leading the control beginning, the pressure reference value is that former pressure is set benchmark; Drop into position control after 5 seconds, side was led actual position value+2mm when side was led position control reference value=switching; After 5 seconds, drop into pressure control again, pressure, position control cycle alternation carry out subsequently, up to batching the band steel is that hot metal detector inspection mistake band steel retreats out side guide pressure, the position cycle control program of batching, confirm through actual debugging and on-the-spot scroll, the position correction value is+2mm that effect is better.
Claims (2)
1. hot tandem rolling special steel method for circularly controlling reeling hydraulic side guide pressure position, it is characterized in that batch stainless steel, these special steels of silicon steel and when hot metal detector examine band steel and reel band steel load during greater than desired value, judge that the band steel has entered coiling machine, reeling hydraulic side guide control afterwards drops into the reeling hydraulic side guide pressure position cycle control, and desired value is 35% of the setting of band steel moment;
At first the side guide pressure that batches of Tou Ruing is controlled to be former control, switches to position control after first alternate circulation time, and its position control reference value is according to following formula value:
Side was led actual position value+δ (1) when side was led position control reference value=switching
In the formula: δ is the position correction value, is 1-10mm, and side is led actual position value and come from the interior position transducer of side drain cylinder pressure, and the pressure reference value of batching side guide pressure control is former pressure control benchmark;
Realize pressure, position control by alternate circulation time subsequently, lose the band steel, finish alternate cycles control up to the hot metal detector inspection; Alternate circulation time T is 1-10 second, finally realizes pressure, position switching control by debugged circulation time.
2. hot tandem rolling special steel method for circularly controlling reeling hydraulic side guide pressure position as claimed in claim 1 is characterized in that the position transducer model in the side drain cylinder pressure is the RHM0360 of U.S. Mei Tesi MTS company.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100751531A CN101625548B (en) | 2009-08-13 | 2009-08-13 | Method for circularly controlling reeling hydraulic side guide pressure position of hot tandem rolling special steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100751531A CN101625548B (en) | 2009-08-13 | 2009-08-13 | Method for circularly controlling reeling hydraulic side guide pressure position of hot tandem rolling special steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101625548A CN101625548A (en) | 2010-01-13 |
| CN101625548B true CN101625548B (en) | 2011-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100751531A Expired - Fee Related CN101625548B (en) | 2009-08-13 | 2009-08-13 | Method for circularly controlling reeling hydraulic side guide pressure position of hot tandem rolling special steel |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896180B (en) * | 2011-07-29 | 2014-07-09 | 上海梅山钢铁股份有限公司 | Control method of hot-rolling rolled side guide plate for improving hot-rolling roll shape quality |
| CN114011878B (en) * | 2021-10-12 | 2024-03-26 | 山西太钢不锈钢股份有限公司 | Method for controlling lifting of pinch roll in process of hot rolling coil steel of steel grade based on characteristic brittleness |
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- 2009-08-13 CN CN2009100751531A patent/CN101625548B/en not_active Expired - Fee Related
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| CN101625548A (en) | 2010-01-13 |
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