CN102553915A - Beginning rolling presetting method for hot rolled sheets - Google Patents
Beginning rolling presetting method for hot rolled sheets Download PDFInfo
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- CN102553915A CN102553915A CN2012100163404A CN201210016340A CN102553915A CN 102553915 A CN102553915 A CN 102553915A CN 2012100163404 A CN2012100163404 A CN 2012100163404A CN 201210016340 A CN201210016340 A CN 201210016340A CN 102553915 A CN102553915 A CN 102553915A
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Abstract
The invention relates to a beginning rolling presetting method for a production line of hot rolled sheets. The technical scheme is as follows: a top roll pressure is detected with a pressure sensor; a bottom roll pressure is detected with a pressure cell; (20-40%) multiplied by a rolling force deviation of two sides of the sensor equals an adjusting straightness; when the rolling force deviation of two sides of the sensor is more than 50T, 40% is selected to use; and when the rolling force deviation of two sides of the sensor is less than 50T, 20% is selected to use. The beginning rolling presetting method of the invention has the following beneficial effects: the difficulty of the operation can be decreased at the beginning of rolling, the head sheet shape is ensured at the beginning of rolling, the phenomenon of rolling the head to be broken which is caused by falsely presetting at the beginning of rolling is greatly reduced, and the production of second steel and scrap steel is avoided. The beginning rolling presetting method of the invention is locally scientific, saves cost and time, and improves economic returns.
Description
Technical field
The present invention relates to the preset method of a kind of SPHC production line open rolling, belong to the metallurgy industry technical field of steel rolling.
Background technology
After backing roll, working roll had been changed in the maintenance of SPHC factory, during open rolling, the leveling value of milling train was difficult to uncertain, shape wave very easily occurs, and when serious, head occurs rolling mashed or gets rid of the steel phenomenon.Equally, per tour changes jobs behind the roller, this type of problem also occurs.Under the constant condition of backing roll, the operative employee can rule of thumb carry out leveling according to the leveling value of a last cover roller, but because of each frame step pad use different, so the leveling value of each frame changes also greatly.So after each roll change, open rolling is extremely unstable, concerning the operative employee, difficulty is bigger, head very easily occurs and rolls mashed or get rid of the steel phenomenon.
Plum mountain Baosteel 1422 with climb steel 1450 factories, it presses the copper rod test in frame after changing backing roll, according to the thickness difference of both sides the milling train level value is carried out preset.This kind method major part can reflect the trend of milling train.But is not real-time when there is friction in the interior roller of frame system than big or roller, because the drafts of copper rod is less, can not reflect the true trend of roll bending.
Summary of the invention
The purpose of this invention is to provide a kind of SPHC open rolling preset method, utilize sensor both sides roll-force deviation, calculate the leveling value, solve the problems referred to above that background technology exists.
Technical scheme of the present invention is: SPHC open rolling preset method; Pressure sensor detects pressure of top roll, and pressure-measuring head detects following roller pressure, and leveling is * sensor both sides roll-force deviation directly=(20%-40%); Sensor both sides roll-force deviation is during greater than 50T; Select 40% for use, during less than 50T, select 20% for use.
Good effect of the present invention is: operation easier in the time of can having reduced open rolling, the head plate shape when guaranteeing open rolling because of the preset mistake causes to such an extent that head rolls mashedly, avoids producing seconds and steel scrap when having significantly reduced open rolling simultaneously.The present invention is local scientific, practices thrift cost and time, increases economic efficiency.
The specific embodiment
Through embodiment the present invention is further specified below.
Pressure sensor is that pressure of top roll detects, and pressure-measuring head is the lower roll pressure detecting.In calibration process, pressure sensor and pressure-measuring head all carry out pressure detecting, and when using pressure-measuring head in the calibration process, pressure sensor carries out stressed and position probing simultaneously.When pressure-measuring head detected the lower roll pressure detecting at timing signal, pressure sensor carried out pressure detecting from top roll, the different stressing conditions in both sides can occur.When the pressure-measuring head both sides are 500T power, and deviation appears in the sensor roll-force.According to two side senser roll-force deviations roll gap is carried out preset, when the transmission side force is big, explain under the side pressure of timing signal transmission roll gap morely, need the transmission side roll gap is lifted; When the operation side force is big, need lift the fore side roll gap.Leveling is straight=and (DS-OS), sensor both sides roll-force deviation selects 40% for use during greater than 50T to (20%-40%) * sensor both sides roll-force deviation, during less than 50T, selects 20% for use.When differential force was in 20T, the operative employee can not adjust.If the roll-force deviation is about+60T.Should be according to analyze estimating at+12-+24, operative employee's preset uses 16 with the leveling value earlier, rollingly subsequently uses 20 when stable.
Utmost point special circumstances roll-force deviation that pressure sensor detects can occur and, error occur and can reflect because relevant equipment goes wrong this moment when opposite or big with the leveling value, cause and demarcate unusually.Need check current step pad or lower support roller criminal card emphatically, avoid accident further to enlarge.
If both sides sensor force difference is very little, but the roll gap of DS-OS increases along with roll-force and skew occurs, and through site inspection equipment, it is loosening to find that current step pad occurs, and is normally rolling after firm.
Claims (1)
1. a SPHC open rolling preset method; It is characterized in that pressure sensor detects pressure of top roll, pressure-measuring head detects following roller pressure, and leveling is * sensor both sides roll-force deviation directly=(20%-40%); Sensor both sides roll-force deviation is during greater than 50T; Select 40% for use, during less than 50T, select 20% for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100163404A CN102553915A (en) | 2012-01-19 | 2012-01-19 | Beginning rolling presetting method for hot rolled sheets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100163404A CN102553915A (en) | 2012-01-19 | 2012-01-19 | Beginning rolling presetting method for hot rolled sheets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102553915A true CN102553915A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100163404A Pending CN102553915A (en) | 2012-01-19 | 2012-01-19 | Beginning rolling presetting method for hot rolled sheets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102553915A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5520037A (en) * | 1991-12-13 | 1996-05-28 | Siemens Aktiengesellschaft | Roll stand adjusting method |
| CN1253863A (en) * | 1999-11-30 | 2000-05-24 | 上海宝钢集团公司 | Zero correction method for tandem mill with band steel down-pressing position |
-
2012
- 2012-01-19 CN CN2012100163404A patent/CN102553915A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5520037A (en) * | 1991-12-13 | 1996-05-28 | Siemens Aktiengesellschaft | Roll stand adjusting method |
| CN1253863A (en) * | 1999-11-30 | 2000-05-24 | 上海宝钢集团公司 | Zero correction method for tandem mill with band steel down-pressing position |
Non-Patent Citations (2)
| Title |
|---|
| 《冶金自动化》 20100522 王林 "热轧带钢产品质量控制的程序设计与调试" 382-384 1 , 第S1期 * |
| 王林: ""热轧带钢产品质量控制的程序设计与调试"", 《冶金自动化》, no. 1, 22 May 2010 (2010-05-22), pages 382 - 384 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |