CN1208141C - Medium and thick plate controlled milling technology and its lifting mechanism - Google Patents
Medium and thick plate controlled milling technology and its lifting mechanism Download PDFInfo
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- CN1208141C CN1208141C CN 02138593 CN02138593A CN1208141C CN 1208141 C CN1208141 C CN 1208141C CN 02138593 CN02138593 CN 02138593 CN 02138593 A CN02138593 A CN 02138593A CN 1208141 C CN1208141 C CN 1208141C
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- elevating mechanism
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Abstract
The present invention discloses a medium plate control rolling technology and a lifting mechanism thereof, which relates to the technical field of pressure processing of metallurgical metal, particularly to a space cross control rolling technology. The present invention is characterized in that after the lifting mechanism is installed at the front of a finishing rolling mill or at the back of the finishing rolling mill, a middle steel plate billet is lifted with a certain height, and another middle steel plate billet or steel plate passes below the lifting mechanism; thus, the space cross control rolling in the production of a medium plate is realized, the rolling waiting time of the rolling mill is reduced, and the efficiency of the rolling mill is increased. The technology has the characteristics of investment and space saving, compact structure, convenient operation and reduction of production cost.
Description
Technical field
The present invention is a kind of cut deal controlled rolling technology, and particularly space crossed controlled rolling technology belongs to metallurgical stress metal processing technique field.
Background technology
At present, each Heavy Plate Production producer to reduce the time to be rolled of milling train, has adopted following four kinds of modes in order to realize intersecting controlled rolling technology in the world:
1, the side roll road is built in the heavy and medium plate mill back, and intermediate blank to be rolled is put on the side roll road, does not influence the production of main rolling line when treating temperature; But steel billet all needs laterally to draw intermediate blank with the steel-drawing machine structure to main rolling line from main rolling line to the side roll road with from the side roll road, not only the time long, and total investment is big.As Jiuquan Heavy Plate Plant is to adopt this kind mode.
2, build annular roller-way at the heavy and medium plate mill fore side, intermediate blank to be rolled is put on the annular roller-way, annular roller-way is that weighing apparatus is fast; Only for greater than certain thickness intermediate blank, after taking a round on the annular roller-way, its finishing temperature is suitable, can not cause finishing temperature low excessively.Heavy steel five factories adopt this kind mode.If annular roller-way is made adjustable speed, because annular roller-way is very long, total investment is big.
3, dolly mode, one group of roller-way before the heavy and medium plate mill machine or behind the machine is made two put side by side and can parallel mobile dolly, when production will intersect the steel plate of controlled rolling, translation dolly rolling line roller-way of deciding, another is used to put treats warm intermediate blank, so is used alternatingly.The domestic factory that has adopts this translation dolly, but because dolly is laterally moving, and its supply line also must move together, and difficult wiring and fault are many, trolley translation roller condition of work is also very poor, perishable simultaneously, and equipment fault is high.
Also has a kind of intersection controlled rolling mode in the world, roll the recrystallization zone rolling pass of two to three blocks of steel earlier, roll after good intermediate blank is put in the heavy and medium plate mill machine, before then two to three blocks of steel billets being delivered to the heavy and medium plate mill machine, roll non-recrystallization district rolling pass since first block of steel billet, roll and send control cold place cooling after good.This intersects controlled rolling mode and requires have bigger space to be used to put intermediate blank before and after the heavy and medium plate mill, and the manufacturer that has spatially distance is not enough, and distance is shorter between roughing mill and the finishing mill, can't intersect controlled rolling in this way.
More than four kinds of modes all be to intersect controlled rolling in the plane, it is big all to have floor space, rolling line is not compact, the shortcoming that cost of investment is high.
Summary of the invention
In order to overcome above-mentioned shortcoming, the invention provides the space crossed controlled rolling technology of a kind of cut deal, overcome the shortcoming of site area deficiency, simultaneously in order to realize above-mentioned technology, the present invention also provides described space crossed controlled rolling technology used elevating mechanism.
The present invention is a kind of cut deal controlled rolling technology, comprises multiple working procedures such as roughing, finish rolling, finishing, finished product warehouse-in, and it is characterized in that: rolling process is online space crossed controlled rolling technology.In the milling train front or the back elevating mechanism is installed, this elevating mechanism adopts several hydraulic cylinder hanging mechanisms, and steel plate and suspender member adopt the point-contact junction structure, and in described zone controlled rolling and cooling instrumentation and equipment is installed, in order to improve cooling velocity, can behind elevating mechanism, establish a spray thrower.
Described " space crossed rolling " be meant parallel with milling train above roller-way is produced in steel rolling or the position of oblique upper elevating mechanism is arranged, also elevating mechanism can be deposited in roller-way below or oblique below, rise use again when rolling the needs, it comprises following mode: 1, two block plates are one group tandem rolling; 2, two is that one group rolling is rolling with upper steel plate.
Cut deal controlled rolling technology of the present invention has two kinds of situations for space crossed controlled rolling process:
1, short for intermediate blank thin, middle time of staying temperature, carry out two blocks of steel and be one group tandem rolling.The roughing cogging is rolled to certain interior thickness with steel billet, and air cooling after rolling some passages earlier on the finishing mill rolls the some passages in back again on finishing mill then.Concrete rolling mill practice process on the finishing mill is as follows:
(1) finishing mill rolls first crystallization rolling pass again;
(2) first are sent behind the elevating mechanism air cooling on the roller-way, and finishing mill rolls second crystallization rolling pass again;
(3) second are sent the elevating mechanism place, and elevating mechanism rises;
(4) finishing mill rolls first non-recrystallization rolling pass, and elevating mechanism falls, and second is sent behind the elevating mechanism air cooling on the roller-way;
(5) second are sent the elevating mechanism place, and elevating mechanism rises, and first finished product send controlled cooling device;
(6) elevating mechanism falls, and second is sent finishing mill to roll its non-recrystallization rolling pass, send controlled cooling device after having rolled.
2, long for thick, the middle time of staying temperature of intermediate blank, will be arranged to one group with a collection of steel billet, carry out the tandem rolling of rolling.The roughing cogging is rolled to certain interior thickness with steel billet, and air cooling after rolling some passages earlier on the finishing mill rolls the some passages in back again on finishing mill then.Concrete rolling process on the finishing mill is as follows:
(1) finishing mill rolls first crystallization rolling pass again;
(2) first are sent behind the elevating mechanism air cooling on the roller-way;
(3) wait for first rolling time of steel non-recrystallization district, finishing mill rolls second crystallization rolling pass again, first steel air cooling;
(4) first are sent the elevating mechanism place, and elevating mechanism rises;
(5) finishing mill rolls first non-recrystallization rolling pass, and elevating mechanism falls, and second is sent behind the elevating mechanism air cooling on the roller-way;
(6) second are sent the elevating mechanism place, and elevating mechanism rises, and first finished product send controlled cooling device;
(7) elevating mechanism falls, and proceeds air cooling for second, and milling train rolls the 3rd crystallization rolling pass again;
(8) second are sent the elevating mechanism place, and elevating mechanism rises, and the 3rd block of steel billet send behind the elevating mechanism air cooling on the roller-way;
(9) elevating mechanism falls, and milling train rolls second non-recrystallization rolling pass;
(10) the 3rd are sent the elevating mechanism place, and elevating mechanism rises, and second finished product send controlled cooling device;
(11) repeating (7)-(10) step so far criticizes steel and has rolled.
Described " middle certain thickness " is meant the thickness of roughing cogging, according to the thickness of finished product steel plate and the thickness of the interstage steel plate after definite roughing cogging.
Described steel plate is meant according to the final thickness of rolling into product steel plate through " some passages " on the finishing mill and definite at the rolling back and forth number of times of finishing mill.
" sheet metal " is meant the steel plate of finished product thickness＜14mm.
" steel plate " is meant the steel plate of finished product thickness 〉=14mm.
" middle time of staying temperature is long and short " depends on the thickness of finished product steel plate and steel grade and time that definite middle steel billet need cool off.
The space crossed controlled rolling technology of the present invention, have the following advantages: the time to be rolled of finishing mill in the time of not only can reducing the cut deal controlled rolling, improved the milling train utilization rate, reduce production cost, also overcome little because of space before and after the finishing mill, as to be difficult to realize crossing on the same level controlled rolling production technology difficulty.Have reduce investment outlay, the spacial characteristics of minimizing equipment, and compact conformation, easy and simple to handle is fit to cut deal controlled rolling and cooling production technology.
Description of drawings
Fig. 1 is a space crossed controlled rolling process chart of the present invention;
Fig. 2 is an elevating mechanism example structure front view of the present invention;
Fig. 3 is an elevating mechanism example structure side view of the present invention;
Fig. 4 is an elevating mechanism example structure vertical view of the present invention.
1-roughing mill 2-finishing mill
3-elevating mechanism 4-control-cooling equipment
5-finishing line 6-roller-way
7--thermometal detector 8-temperature measurer
301-hydraulic cylinder leg 302-rail brackets
303-crossbeam II 304-bearing pin II
305-cover plate 306-steelframe
307-hydraulic cylinder 308-chain
It is hinged that 309-adjusts joint 310-
311-bearing pin I 312-crossbeam I
313-holds in the palm rail
The specific embodiment
The present invention is further illustrated with following non-limiting embodiment.
The elevating mechanism of a hydraulic pressure at first is installed on the extension roller table behind the cut deal four-high mill, and steel billet in the middle of being used to put is to shorten the middle time of staying temperature of thick specification variety steel.The parameter of elevating mechanism is as follows: elevating mechanism length is 6 meters, and the liftable width is 1500-2400mm, rises to fall total time≤4 second, and hoisting depth is 600mm; Elevating mechanism adopts four hydraulic cylinders to hang form, adopts the some contact form between steel plate and suspension rod, and such structure can not only make steel billet break away from roller-way, can normally move other steel plate below, also can avoid the uneven situation of steel plate temperature drop to occur as far as possible.
In the elevating mechanism zone, 4 thermometal detector HMD (7) and temperature measurer (8) are installed, 4 thermometal detectors (7) can be installed on the end line place, front and back of elevating mechanism (3) respectively, can prevent lift slab or the collision of lifting platform section swing steel plate when steel rolling like this; Infrared radiation thermometer can be installed in top, elevating mechanism middle part, to detect steel plate top surface temperature.According to the production testing needs, can many thermometal detectors and temperature measurer be installed in the lifting zone.
After installing the equipment and instrumentation in elevating mechanism zone, the beginning rolled plate.
At first select the suitable grade of steel of chemical analysis, casting blank specification is 180*1200*1500mm, and the strand quantity of each steel grade is no less than 12.
As the demanding steel grade of rolling performance, with A36, Q345qc is example, the finished steel sheet thickness dimension is 14mm, thick, the middle time of staying temperature of steel billet is long in the middle of requiring when rolling, carry out the three-high mill cogging earlier to steel billet thickness 50-65mm, air cooling is about 40 seconds after rolling three passages earlier on the four high finishing mill, rolls back three passages again on four high finishing mill, goes out the finished product steel plate.Adopting a collection of is that one group scroll space is intersected controlled rolling technology with kind same specification steel plate.The operation of rolling on four high finishing mill is as follows:
1) rolls first crystallization rolling pass again;
2) first is sent behind the elevating mechanism air cooling on the roller-way;
3) wait for first rolling time of steel non-recrystallization district, four-high mill rolls second crystallization rolling pass again, first steel air cooling;
4) first is sent the elevating mechanism place, and elevating mechanism rises 400mm;
5) four-high mill rolls first non-recrystallization rolling pass, and elevating mechanism falls, second air cooling;
6) second is sent the elevating mechanism place, and elevating mechanism rises 400mm, and first finished product send controlled cooling device;
7) elevating mechanism falls, and proceeds air cooling for second, and milling train rolls the 3rd crystallization rolling pass again;
8) second is sent the elevating mechanism place, and elevating mechanism rises 400mm, and the 3rd block of steel billet send behind the elevating mechanism air cooling on the roller-way;
9) elevating mechanism falls, and milling train rolls second non-recrystallization rolling pass;
10) the 3rd is sent the elevating mechanism place, and elevating mechanism rises 400mm, and second finished product send controlled cooling device;
11) repetition 7)-10) step is so far criticized steel and has been rolled.
Going out trimmed size is the kind steel plate of 14*1800*Lmm.
Thin (during＜14mm) steel billet at rolling, trimmed size not high as performance requirements such as Q345B, as steel billet thickness is 180mm, the steel grade that intermediate slab is thin when rolling, time of staying temperature is short, carrying out three-high mill (1) cogging to middle steel billet thickness earlier is 40-55mm, air cooling a period of time after rolling five passages earlier on the four-high mill (2), about 30 seconds, on four-high mill (2), roll back two passages again and go out finished product, adopting two blocks of steel is one group tandem rolling.Concrete rolling mill practice process on four high finishing mill (2) is as follows:
1) four-high mill rolls first crystallization rolling pass again;
2) first is sent behind the elevating mechanism air cooling on the roller-way, and four-high mill rolls second crystallization rolling pass again;
3) second is sent the elevating mechanism place, and elevating mechanism rises 400mm;
4) four-high mill rolls first non-recrystallization rolling pass, and elevating mechanism falls, second air cooling;
5) second is sent the elevating mechanism place, and elevating mechanism rises 400mm, and first finished product send controlled cooling device (4);
6) elevating mechanism falls, and second is sent four-high mill to roll its non-recrystallization rolling pass, send controlled cooling device (4) after having rolled.
Go out the steel plate that finished size is 10*1800*Lmm at last.
" L " is meant any length.
In order to improve cooling velocity, can behind elevating mechanism, set up a spray thrower cooling device.
Below elevating mechanism is done embodiment explanation, but be not limited in this example.
As Fig. 2, Fig. 3, shown in Figure 4, on steel rolling production-line, do four hydraulic cylinder legs (301) in conveyor roller (6) bearing block both sides, respectively hang a hydraulic cylinder (307) on each hydraulic cylinder leg (301) top, hang a crossbeam I (312) parallel under the hydraulic cylinder of roller-way both sides (307) with roller-way (6), for allowing steadily lifting of elevating mechanism, at each hydraulic cylinder leg (301) installed inside one rail brackets (302); Hang a vertical with it crossbeam II (303) in the below of crossbeam I (312), upward a bearing pin II (304) is set at crossbeam II (303) every 1.5 meters, be used for chaining bar (308), chain (308) lower end connect one parallel with roller-way (6) and be lower than the holder rail (313) of roller-way (6) working face when not working, contact the temperature drop that causes in order to reduce steel plate with holder rail (313), will ask the top of rail (313) to do toothing.Along with the contraction of hydraulic cylinder (307), drive crossbeam I (312), crossbeam II (303), chain (308) and holder rail (313) and rise, make steel plate leave roller-way (6) working face.
Claims (6)
1, a kind of cut deal controlled rolling technology comprises multiple working procedures such as roughing, finish rolling, finishing, finished product warehouse-in, and its step is as follows:
Rolling process is online space crossed controlled rolling technology;
Short for intermediate blank thin, middle time of staying temperature, carry out two blocks of steel and be one group tandem rolling technology;
The roughing cogging is rolled to certain interior thickness with steel billet, and air cooling after rolling some passages earlier on the finishing mill rolls the some passages in back again on finishing mill then.
2, cut deal controlled rolling technology as claimed in claim 1 is characterized in that:
Concrete rolling mill practice process on the finishing mill is as follows:
(1) finishing mill rolls first crystallization rolling pass again;
(2) first are sent behind the elevating mechanism air cooling on the roller-way, and finishing mill rolls second crystallization rolling pass again;
(3) second are sent the elevating mechanism place, and elevating mechanism rises;
(4) finishing mill rolls first non-recrystallization rolling pass, and elevating mechanism falls, and second is sent behind the elevating mechanism air cooling on the roller-way;
(5) second are sent the elevating mechanism place, and elevating mechanism rises, and first finished product send controlled cooling device;
(6) elevating mechanism falls, and second is sent finishing mill to roll its non-recrystallization rolling pass, send controlled cooling device after having rolled.
3, cut deal controlled rolling technology as claimed in claim 1 is characterized in that: long for thick, the middle time of staying temperature of intermediate blank, will be arranged to one group with a collection of steel billet, and carry out roll space crossed rolling.
4, cut deal controlled rolling technology as claimed in claim 3, it is characterized in that: the concrete rolling process on the finishing mill is as follows:
(1) finishing mill rolls first crystallization rolling pass again;
(2) first are sent behind the elevating mechanism air cooling on the roller-way;
(3) wait for first rolling time of steel non-recrystallization district, finishing mill rolls second crystallization rolling pass again, first steel air cooling;
(4) first are sent the elevating mechanism place, and elevating mechanism rises;
(5) finishing mill rolls first non-recrystallization rolling pass, and elevating mechanism falls, and second is sent behind the elevating mechanism air cooling on the roller-way;
(6) second are sent the elevating mechanism place, and elevating mechanism rises, and first finished product send controlled cooling device;
(7) elevating mechanism falls, and proceeds air cooling for second, and milling train rolls the 3rd crystallization rolling pass again;
(8) second are sent the elevating mechanism place, and elevating mechanism rises, and the 3rd block of steel billet send behind the elevating mechanism air cooling on the roller-way;
(9) elevating mechanism falls, and milling train rolls second non-recrystallization rolling pass;
(10) the 3rd are sent the elevating mechanism place, and elevating mechanism rises, and second finished product send controlled cooling device;
(11) repeating (7)-(10) step so far criticizes steel and has rolled.
5, the used elevating mechanism of the described cut deal controlled rolling of a kind of claim 1 technology adopts several hydraulic cylinder hanging mechanisms, and steel plate and suspender member adopt the point-contact junction structure; It is characterized in that: elevating mechanism is installed in milling train front or back.
6, the used elevating mechanism of cut deal controlled rolling technology as claimed in claim 5 is characterized in that: in the elevating mechanism zone controlled rolling instrumentation and equipment are installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138593 CN1208141C (en) | 2002-11-14 | 2002-11-14 | Medium and thick plate controlled milling technology and its lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138593 CN1208141C (en) | 2002-11-14 | 2002-11-14 | Medium and thick plate controlled milling technology and its lifting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1410179A CN1410179A (en) | 2003-04-16 |
| CN1208141C true CN1208141C (en) | 2005-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02138593 Expired - Fee Related CN1208141C (en) | 2002-11-14 | 2002-11-14 | Medium and thick plate controlled milling technology and its lifting mechanism |
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| CN (1) | CN1208141C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331304A (en) * | 2013-07-12 | 2013-10-02 | 鞍钢股份有限公司 | Method for rolling steel plate with heavy and medium plate mill |
| CN104511486B (en) * | 2013-09-30 | 2016-06-29 | 宝山钢铁股份有限公司 | Position detecting device and control method thereof |
| CN104138911B (en) * | 2014-05-27 | 2016-06-29 | 南京钢铁股份有限公司 | A kind of method of cut deal intermediate blank rapid water cooling temperature control |
| CN109622636B (en) * | 2018-12-30 | 2020-09-22 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | Transfer device, steel plate production method and production workshop |
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2002
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| Publication number | Publication date |
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| CN1410179A (en) | 2003-04-16 |
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Granted publication date: 20050629 Termination date: 20121114 |