CN1654137A - Method of parallel rolling by two roughing mills in the rough roll zone on hot rolling production line - Google Patents
Method of parallel rolling by two roughing mills in the rough roll zone on hot rolling production line Download PDFInfo
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- CN1654137A CN1654137A CNA2004100211441A CN200410021144A CN1654137A CN 1654137 A CN1654137 A CN 1654137A CN A2004100211441 A CNA2004100211441 A CN A2004100211441A CN 200410021144 A CN200410021144 A CN 200410021144A CN 1654137 A CN1654137 A CN 1654137A
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Abstract
The parallel rolling process with two roughing mills in the roughing area of the production line features that the computer program controlled 3 gate + 3 gate rolling mode with the first roughing mills R1 in forward direction rolling and the second roughing mills R1 in reverse direction rolling simultaneously. In the first or the third gates of the R1 and the R2, the R2 is preferential, while in the second gate of the R1 and the R2, the R1 is preferential. The present invention has effectively controlled time sequence, and compared with original rolling process, the present invention has reduced rolling time, saving in power consumption, and raised rolling quality.
Description
Technical field
The invention belongs to technical field of steel rolling, relate in particular to the roughing method of hot rolling line.
Background technology
The roughing district of hot rolling line is made up of two roughing mill R1 and R2 usually, and the distance between roughing mill R1 and the R2 is shorter.The roughing mill R1 in my company 1780 hot rolling line roughing zones is setting up between Fixed width pressing machine SP and roughing mill R2 in order to improve output during the scrap build, thereby two distance between roller roughing mill R1 and the four-high rougher R2 shorter, only more than 80 meter, the distance between Fixed width pressing machine SP and the two roller roughing mill R1 is less than 30 meters.If, just be easy to cause the collision accident of slab between two roughing mills so two roughing mill R1 and R2 are rolled simultaneously.By two roughing mill R1 of design code and R2 rolling sequencing is arranged, promptly first block of slab from Fixed width pressing machine SP conveyance to two roller roughing mill R1, earlier after roughing mill R1 is rolled, be rolled to four-high rougher R2 by conveyance again, at this moment second block of slab needed to wait for by conveyance behind two roller roughing mill R1 from Fixed width pressing machine SP, Deng first block of slab four-high rougher R2 is rolling finish after, second block of slab waiting at roughing mill R1 just can be rolled (as shown in Figure 1), Deng roughing mill R1 is rolling finish after, conveyance is rolled to four-high rougher R2 again.Like this, every block of slab all gets and successively is rolled at roughing mill R1 and R2 respectively, and two roughing mill R1 and R2 can not be simultaneously rolling, must wait for a period of time mutually.This mutual wait has not only influenced output, also increased iron scale, a large amount of starting material have been wasted, improved cost, but also lost heat, and the gas consumption when having increased heating, this in addition wait makes equipment idle running, not only waste the energy but also reduced the efficient of equipment, also accelerated the aging of equipment.
Summary of the invention
For solving the problem of above-mentioned existence, reduce time delay and the energy loss unnecessary in the roughing district, improve output, we have broken original rolling mode, have developed the parallel milling method of two roughing mill R1 in a kind of hot rolling line roughing district and R2.Be characterized in adopting computer program control, make that oppositely to require program to carry out simultaneously with rolling roughing mill R1 of 3 passages+3 passage modes and R2 by following R1 forward requirement program and R2 forward and reverse rolling:
1) when first block of slab come milling train R1, as not having slab on G2～H1 roller-way, R1 can be rolling;
2) when milling train R1 and R2 are in first passage simultaneously, R2 is rolling preferential, can be rolling when R1 need satisfy following condition:
1. milling train R2 forward passage,
2. milling train R2 stings steel,
3. roller-way G1～G3 does not have slab,
4. detecting device HMD does not detect slab,
5. milling train R1 is not a final pass;
3) when milling train R1 and R2 are in second passage simultaneously, R1 is rolling preferential, can be rolling when R2 need satisfy following condition:
1. the reverse passage of milling train R1,
2. milling train R1 stings steel,
3. roller-way G3～G8 does not have slab;
When 4) milling train R1 and R2 were in the forward final pass simultaneously, R2 was rolling preferential, can be rolling when R1 need satisfy following condition:
1. milling train R2 forward passage,
2. the R2 milling train is stung steel,
3. G1～G3 roller-way does not have slab,
4. detecting device HMD does not detect slab,
5. R1 is a final pass,
6. R2 is a final pass,
7. G1～G4 roller-way does not have slab.
5) be in reverse two passages as milling train R2, and milling train R1 is not when having slab, R2 satisfies following condition can be rolling:
1. the R1 milling train is not stung steel,
2. the D4 roller-way does not have slab,
3. G1～G8 roller-way does not have slab.
If milling train R2 is in reverse two passages, and milling train R1 is when being in forward a time, and R2 satisfies following condition, and promptly to finish two passages rolling, and it is rolling to carry out R1 a time R2 three passages by R1 forward requirement program then:
1. R1 milling train forward passage,
2. G3～G8 roller-way does not have slab,
3. D roller-way rolling shedule does not have operation.
If milling train R2 is in forward three passages, and milling train R1 is when being in forward a time, and R2 is rolling preferential, can be rolling when milling train R1 need satisfy following condition:
1. R2 stings steel,
2. R2 forward,
3. G1～G3 roller-way does not have slab,
4. the HMD detecting device does not detect slab.
This parallel milling method has carried out effective control to the rolling sequential of two roughing mill R1 and R2, compares with original milling method, can save the time of 2 passages, and the time of promptly rolling 2 blocks of slabs originally can shut out 3 blocks of slabs now.Like this, not only save the rolling time, improved output, also saved the energy, reduced the temperature loss of intermediate blank, and reduced the head and tail temperature difference of slab, improved the quality of band steel.
Description of drawings
Accompanying drawing 1 is original rolling synoptic diagram.
Accompanying drawing 2 is the parallel rolling synoptic diagram of the present invention.
Accompanying drawing 3 is the arrangenent diagram of roughing unit of the present invention.
Accompanying drawing 4 requires the logical diagram of program for R1 milling train forward of the present invention.
Accompanying drawing 5 oppositely requires the logical diagram of program for R2 milling train of the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings.The parallel milling method of two roughing mill R1 in hot rolling line roughing of the present invention district and R2 mainly is applicable to the rolling mode of 3 passages+3 passages, promptly working as the R1 milling train is that 3 passages are rolling, the R2 milling train also is that 3 passages are when rolling, 2 roughing mill R1 and R2 can carry out forward and reverse rolling simultaneously, but must satisfy R1 forward requirement program and R2 oppositely requires program.Accompanying drawing 2 is the parallel rolling synoptic diagram of the present invention, and D4, G1～G8, H1 are roller-way among the figure, and HMD is a hot metal detector, and dark part is the slab present position among the figure.
The present invention is provided with that anticollision detects and the priority determining program, also is that oppositely to require program with R2 mainly be in order to prevent the parallel rolling accident that do not occur to R1 forward requirement program.Rolling minute 1+5 of roughing mill R1 and R2 is rolling rolling with 3+3, and the rolling R1 of being meant of 1+5 rolls 1 passage R2 and rolls 5 passages.R2 was rolling preferential when 1+5 was rolling, R1 must wait until anticollision detect by after can advance steel, promptly G1 behind the steel～when the G3 roller-way does not have steel is stung in R2 the 5th road, and R1 does not allow steel during all the other passages of R2.Roughing mill R1 can carry out parallel rolling with R2 when 3+3 was rolling, but must detect and the priority judgement by anticollision, also promptly satisfy R1 forward requirement program and R2 and oppositely require program, see also the logical diagram of accompanying drawing 4--R1 milling train forward requirement program and the logical diagram that accompanying drawing 5--R2 milling train oppositely requires program.Can carry out parallel rolling situation and have five kinds: milling train R1 and R2 are all first passage, are all second passage, are all the 3rd passage, the R1 first passage R2, second passage and the R1 first passage R2 the 3rd passage.Other situation is to allow anything but to occur as the R1 second passage R2 the 3rd passage, otherwise the two boards base can bump.
When roughing mill R1 and R2 were all first passage, the 3rd passage or the R1 first passage R2 the 3rd passage, R2 was rolling preferential, and after R1 must wait for that R2 stings steel, and G1～G3 roller-way does not have slab can advance steel.And R1 and R2 be when being all second passage, and R1 is rolling preferential, and after R2 must wait for that R1 stings steel, G3～G8 roller-way did not have slab just can advance steel.When the R1 first passage R2 second passage, R2 is rolling preferential, treat that R2 has rolled second passage after, the state with the R1 first passage R2 the 3rd passage is rolled again.Only in this way could guarantee the parallel rolling fortuitous event that do not occur of roughing mill R1 with R2.
Concrete milling method of the present invention is such: when roughing mill R1 and R2 are 3 passages+when 3 passages are rolling, just enter parallel rolling shedule control.At first first block of slab from Fixed width pressing machine SP conveyance to duo mill R1 (referring to accompanying drawing 3), as long as do not have slab on G2～H1 roller-way, milling train R1 promptly is rolled, otherwise wait for (as shown in Figure 4), after rolling 3 passages, slab is rolled to four-high rougher R2 by conveyance, simultaneously second block of slab from Fixed width pressing machine SP conveyance to milling train R1, just begin parallel rolling this moment.When first block of slab carries out forward first passage rolling the time at milling train R2, it is rolling that second block of slab also begins forward first passage at milling train R1, but milling train R1 must satisfy following R1 forward requirement program, otherwise wait for (as shown in Figure 4): 1. milling train R2 forward passage, 2. milling train R2 stings steel, 3. roller-way G1～G3 does not have slab, and 4. detecting device HMD does not detect slab, and 5. milling train R1 is not a final pass.First passage is rolling finish after, the two boards base begins the rolling of reverse second passage simultaneously again.When second block of slab carries out reverse second passage rolling the time at milling train R1, it is rolling that first block of slab also begins reverse second passage at milling train R2, but milling train R2 must satisfy following R2 oppositely requires program, otherwise wait for (as shown in Figure 5): the 1. reverse passage of milling train R1,2. milling train R1 stings steel, and 3. roller-way G3～G8 does not have slab.Second passage is rolling finish after, the two boards base begins the rolling of forward the 3rd passage simultaneously again.When first block of slab carries out forward the 3rd passage rolling the time at milling train R2, it is rolling that second block of slab also begins forward the 3rd passage at milling train R1, but milling train R1 must satisfy following R1 forward requirement program, otherwise wait for (as shown in Figure 4): 1. milling train R2 forward passage, 2. the R2 milling train is stung steel, and 3. G1～G3 roller-way does not have slab, 4. detecting device HMD does not detect slab, 5. R1 is a final pass, and 6. R2 is a final pass, and 7. G1～G4 roller-way does not have slab.The 3rd passage is rolling finish after, first block of slab is rolled to mm finishing mill unit by conveyance.Second block of slab is rolled to milling train R2 by conveyance, the 3rd block of slab from Fixed width pressing machine SP conveyance to milling train R1, such second block of slab begins the parallel rolling of a new round again with the 3rd block of slab, by that analogy, every block of slab is all keeping this parallel rolling with next piece slab between milling train R2 and milling train R1.
If milling train R2 is in reverse two passages in the operation of rolling, and milling train R1 is rolling when not having slab as finishing because of certain reason, R2 satisfies following condition can rolling (as shown in Figure 5): 1. the R1 milling train is not stung steel, and 2. the D4 roller-way does not have slab, and 3. G1～G8 roller-way does not have slab.
If milling train R2 has been in reverse two passages in the operation of rolling, and milling train R1 is when also being in forward a time because of reasons such as slab carrying are untimely, R2 satisfies following condition, and promptly to finish two passages rolling, carry out R1 a time R2 three passages rolling (as shown in Figure 5) by R1 forward requirement program then: 1. R1 milling train forward passage, 2. G3～G8 roller-way does not have slab, and 3. D roller-way rolling shedule does not have operation.R2 is that forward three passage R1 are when being forward a time, R2 is rolling preferential, R2 carry out forward the 3rd passage rolling in, it is rolling that R1 begins forward first passage, but milling train R1 must satisfy following R1 forward requirement program, otherwise waits for (as shown in Figure 4): 1. R2 sting steel, 2. the R2 forward, 3. G1～G3 roller-way does not have slab, 4. the HMD detecting device does not detect slab.
Claims (2)
1. the parallel milling method of two roughing mills in hot rolling line roughing district, it is characterized in that this method adopts computer program control, make that oppositely to require program to carry out simultaneously with rolling roughing mill R1 of 3 passages+3 passage modes and R2 by following R1 forward requirement program and R2 forward and reverse rolling:
1) when first block of slab come milling train R1, as long as do not have slab on roller-way G2～H1, R1 can be rolling;
2) when milling train R1 and R2 are in forward first passage simultaneously, R2 is rolling preferential, can be rolling when R1 need satisfy following condition:
1. milling train R2 forward passage,
2. milling train R2 stings steel,
3. roller-way G1～G3 does not have slab,
4. detecting device HMD does not detect slab,
5. milling train R1 is not a final pass;
3) when milling train R1 and R2 were in reverse second passage simultaneously, R1 was rolling preferential, can be rolling when R2 need satisfy following condition:
1. the reverse passage of milling train R1,
2. milling train R1 stings steel,
3. roller-way G3～G8 does not have slab;
4) when milling train R1 and R2 are in the forward final pass simultaneously, R2 is rolling preferential, can be rolling when R1 need satisfy following condition:
1. milling train R2 forward passage,
2. the R2 milling train is stung steel,
3. G1～G3 roller-way does not have slab,
4. detecting device HMD does not detect slab,
5. R1 is a final pass,
6. R2 is a final pass,
7. G1～G4 roller-way does not have slab.
5) be in reverse two passages as milling train R2, and milling train R1 is not when having slab, R2 satisfies following condition can be rolling:
1. the R1 milling train is not stung steel,
2. the D4 roller-way does not have slab,
3. G1～G8 roller-way does not have slab.
2. the parallel milling method of two roughing mills in hot rolling line roughing according to claim 1 district is characterized in that:
1) be in reverse two passages as milling train R2, and milling train R1 is when being in forward a time, R2 satisfies following condition, and promptly to finish two passages rolling, and it is rolling to carry out R2 three passage R1 a time by R1 forward requirement program then:
1. R1 milling train forward passage,
2. G3～G8 roller-way does not have slab,
3. D roller-way rolling shedule does not have operation.
2) be in forward three passages as milling train R2, and milling train R1 is when being in forward a time, R2 is rolling preferential, can be rolling when milling train R1 need satisfy following condition:
1. R2 stings steel,
2. R2 forward,
3. G1～G3 roller-way does not have slab,
4. the HMD detecting device does not detect slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100211441A CN100369682C (en) | 2004-02-12 | 2004-02-12 | Parallel rolling method of two rough rolling mills in rough rolling area of hot rolling production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100211441A CN100369682C (en) | 2004-02-12 | 2004-02-12 | Parallel rolling method of two rough rolling mills in rough rolling area of hot rolling production line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1654137A true CN1654137A (en) | 2005-08-17 |
| CN100369682C CN100369682C (en) | 2008-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100211441A Expired - Fee Related CN100369682C (en) | 2004-02-12 | 2004-02-12 | Parallel rolling method of two rough rolling mills in rough rolling area of hot rolling production line |
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| CN (1) | CN100369682C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105710135A (en) * | 2014-12-01 | 2016-06-29 | 鞍钢股份有限公司 | Free rolling control method for rough rolling double-rolling mill |
| CN109365543A (en) * | 2018-10-09 | 2019-02-22 | 鞍钢股份有限公司 | Control system and method for hot rolling rough rolling final stand rolling mill in fault state |
| CN110586661A (en) * | 2019-08-09 | 2019-12-20 | 柳州钢铁股份有限公司 | Gapless rolling control method |
| CN110586647A (en) * | 2019-09-04 | 2019-12-20 | 鞍钢股份有限公司 | Non-intermittent rolling method for rough rolling R1 rolling mill |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3019123A1 (en) * | 1980-05-20 | 1981-11-26 | Estel Hoesch Werke Ag, 4600 Dortmund | ARRANGEMENT FOR HOT ROLLING METAL WORKPIECES |
| AU2669088A (en) * | 1987-12-18 | 1989-06-22 | Hitachi Limited | Apparatus and method for hot-rolling slab into sheets |
| DE19628369A1 (en) * | 1996-07-13 | 1998-01-15 | Schloemann Siemag Ag | Process for rolling finished profiles from a preliminary profile |
| JP3843763B2 (en) * | 2000-05-30 | 2006-11-08 | 住友金属工業株式会社 | Hot rolling equipment and hot rolling method |
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2004
- 2004-02-12 CN CNB2004100211441A patent/CN100369682C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105710135A (en) * | 2014-12-01 | 2016-06-29 | 鞍钢股份有限公司 | Free rolling control method for rough rolling double-rolling mill |
| CN109365543A (en) * | 2018-10-09 | 2019-02-22 | 鞍钢股份有限公司 | Control system and method for hot rolling rough rolling final stand rolling mill in fault state |
| CN110586661A (en) * | 2019-08-09 | 2019-12-20 | 柳州钢铁股份有限公司 | Gapless rolling control method |
| CN110586661B (en) * | 2019-08-09 | 2020-12-18 | 柳州钢铁股份有限公司 | Gapless rolling control method |
| CN110586647A (en) * | 2019-09-04 | 2019-12-20 | 鞍钢股份有限公司 | Non-intermittent rolling method for rough rolling R1 rolling mill |
| CN110586647B (en) * | 2019-09-04 | 2021-04-02 | 鞍钢股份有限公司 | Non-intermittent rolling method for rough rolling R1 rolling mill |
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| Publication number | Publication date |
|---|---|
| CN100369682C (en) | 2008-02-20 |
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| ASS | Succession or assignment of patent right |
Owner name: ANGANG NEW STEEL ROLLING CO., LTD. Free format text: FORMER OWNER: XINGANGTIE CO., LTD., ANSHAN IRON AND STEEL GROUP Effective date: 20070302 |
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Effective date of registration: 20070302 Address after: 114009, No. 63, Wuyi Road, MTR Eastern District, Liaoning, Anshan Applicant after: New Steel Rolling Co., Ltd., Anshan Iron and Steel Co. Address before: 114001 No. 31 Shengli Road, Tiedong District, Liaoning, Anshan Applicant before: Xingangtie Co., Ltd., Anshan Iron and Steel Group |
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Granted publication date: 20080220 Termination date: 20190212 |
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