CN106269864B - A kind of method for improving Thin container plate hot rolling stability - Google Patents
A kind of method for improving Thin container plate hot rolling stability Download PDFInfo
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- CN106269864B CN106269864B CN201610770344.XA CN201610770344A CN106269864B CN 106269864 B CN106269864 B CN 106269864B CN 201610770344 A CN201610770344 A CN 201610770344A CN 106269864 B CN106269864 B CN 106269864B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
This application discloses the production method for improving Thin container plate hot rolling stability, following steps are specifically included：Continuous rolling≤18 piece；Tapping temperature >=1330 DEG C, tail temperature are higher than 5~10 DEG C of head；Entry temperature at finishing >=1060 DEG C, 20 DEG C of total length temperature difference ＜, different 20 DEG C of plate temperature difference ＜；Finishing temperature >=850 DEG C；Workpiece thickness is 30mm, camber≤20mm；R2 extreme trace time side pressures are 18~20mm；Last machine frame loop tension force is set as 22~25N/mm；Finishing mill acceleration is defined to 0.05m/s2, threading speed is limited to 10.5m/s；F6, F7 afterbody auto lifting roll gap, F5~F7 afterbody flipper guides are opened to maximum.Beneficial effects of the present invention are：The problems such as efficiently solving the unstable caused whipping of rolling, even piling of steel, has good economic benefit and social benefit.
Description
Technical field
The invention belongs to hot rolling technical field, it is related to a kind of hot rolling production method of Thin container plate, specifically
It is related to a kind of production method of raising below 1.6mm Thin container plate hot rolling stability.
Background technology
Container plate has extremely strong resistance to air and seawater corrosion ability, especially adapts to container open air transport, storage
Environmental condition, it is the ideal material for producing seavan.With the growth of global trade amount, China's steel for container in recent years
Demand also keeps the growth of fair speed, and container car sales volume ranks first in the world, and accounts for more than the 95% of world container yield.
Inland container plate main specifications is based on 2.0-6.0mm at present, has realized batch steady production.Advised relative to thickness
It lattice, can effectively mitigate Container Weight less than 1.6mm Thin Specs high-strength container plates, reduce downstream user freight, tool
Standby wide market prospects.But the steady production for being less than 1.6mm Thin container plate still has larger difficulty, mainly
It is embodied in：
(1), mill speed is fast, and threading is unstable, and operative employee has little time to adjust.
(2), strip total length non-uniform temperature, temperature drop is too fast in the operation of rolling.
(3), easily there is camber in roughing, and finish rolling is not easy to rectify a deviation.
(4), finish rolling inlet head temperature is relatively low, causes deformed steel strip, influences smooth threading.
(5), tail temperature is too low causes finishing mill draught pressure and resistance of deformation to increase.
(6), finish rolling afterbody deformed steel strip, mill roll-gap and flipper guide are difficult to adjust in time.
The factor for influenceing Thin container plate rolling stability has a lot, and these factor controllings are improper to cause plate shape can not
Control and tower-loop control are unstable, the problem of easily causing downstream frame that whipping, piling of steel occurs.
The rolling stability of Thin container plate turns into a technical bottleneck, urgent need to resolve.
The content of the invention
It is an object of the invention to provide a kind of production method for improving Thin container plate hot rolling stability, use
In the hot rolling stability for improving production below 1.6mm Thin container plates.
For achieving the above object, the present invention adopts the following technical scheme that：One kind improves Thin container plate hot rolling
The production method of rolling stability, this method are realized by optimizing heating technique and rolling mill practice.Specifically include following steps：
S1, each rolling scaduled continuous layout are no more than 18 pieces；
S2, control heating furnace tapping temperature are not less than 1330 DEG C, and tail temperature is higher than 5~10 DEG C of head temperature；
S3, workpiece thickness 30mm, camber control within 20mm, more than 20mm, F1~F4 need to be rectified a deviation；
S4, R2 extreme trace time side pressure control need to change sharing of load between 18~20mm more than 20mm；
Base temperature control is more than 1060 DEG C among s5, finish rolling entrance, and the middle base total length temperature difference is less than 20 DEG C, and difference adds
The different plate temperature difference that the middle base of hot stove enters finishing mill is less than 20 DEG C；
S6,0.05m/s is defined to finishing mill acceleration2, threading speed is limited to 10.5m/s；
S7, last machine frame loop tension force setting L6：22~25N/mm, if L6 loop tensions are less than 22N/mm, L6 need to be lived
Set tension force is modified；
S8, F6, F7 use auto lifting roll gap function in rolling afterbody, and F5~F7 afterbody flipper guides are opened to maximum；
S9, finishing temperature control are more than 850 DEG C.
Preferably, in the method for above-mentioned raising Thin container plate hot rolling stability, the step s2's
Control method includes：Cold base is that less than 300 DEG C time inside furnaces must are fulfilled for 160min, and 300 DEG C~500 DEG C hot bases meet
145min, the non-milling train side heating 65s commutations of recuperative heater, milling train side heating 60s commutations.
Preferably, in the method for above-mentioned raising Thin container plate hot rolling stability, the step s3's
Control method includes：If reaping hook bends towards fore side, fore side gap values between rollers are reduced manually, until strip is straight；If bending towards transmission side,
Transmission side gap values between rollers are reduced manually, until strip is straight.
Preferably, in the method for above-mentioned raising Thin container plate hot rolling stability, the step s5's
Control method includes：Heating furnace includes 1# heating furnaces, 2# heating furnaces and the 3# heating furnaces set gradually, wherein, 2# heating furnaces go out
Steel temperature is higher than 5 DEG C of the 1# heating furnaces close to milling train, and the 3# heating furnaces away from milling train are higher than 10 DEG C of 1# heating furnaces.
Preferably, in the method for above-mentioned raising Thin container plate hot rolling stability, the step s7's
Control method includes：Parameter is modified in one-level, increases L6 kink unit tensions.
Preferably, in the method for above-mentioned raising Thin container plate hot rolling stability, the step s8's
Control method includes：When F5 detects that tail part of band steel throws steel, quickly upper lift is fast for 20%~30% original, F7 to roll-force by F6
Lift is to without roll-force in speed.
Preferably, in the method for above-mentioned raising Thin container plate hot rolling stability, the step s9's
Control method includes：Close interstand cooling water, anti-peeling water, in addition to F7 side spray water is normally opened, remaining side spray water Close All.
Compared with prior art, the advantage of the invention is that：The present invention without using stay-warm case, original roll need not be changed
Roller, it need not additionally increase roll rolling lubrication equipment, it is only necessary to can be achieved with thin rule by optimizing heating technique and rolling mill practice
The stable rolling of lattice container plate, easily realize.The present invention efficiently solves rolling unstable caused whipping, even piling of steel etc.
Problem, there is good economic benefit and social benefit.
Embodiment
The present invention is described further by the following example：According to following embodiments, the present invention may be better understood.
However, as it will be easily appreciated by one skilled in the art that specific material ratio, process conditions and its result described by embodiment are only used
In the explanation present invention, without should be also without limitation on the present invention described in detail in claims.
The present invention is done furtherly with reference to the embodiment for the container plate that 1.54mm is thick, 1220mm is wide
It is bright：
(1) because ultra-thin gauge rolling is unstable, easy whipping causes rolls damage, therefore plans upper continuous layout otherwise exceed
18 pieces, downstream roll plan is arranged into more than 18 pieces.
(2) continuous casting billet specification is 220mm thick, and 1220mm is wide.Heating furnace tapping temperature is not less than 1330 DEG C, because difference adds
Hot stove is far and near different apart from milling train, to ensure that the different plate temperature difference into finishing mill is less than 20 DEG C, 2# heating furnaces soaking zone heating temperature
Degree is higher than 1# heating furnace 5 DEG C, and 3# heating furnaces are higher than 1# heating furnace 10 DEG C.It is as shown in the table for heating and temperature control.
(3) different heat times, non-milling train side heating 65s commutations, milling train side heating 60s are set by heating furnace both sides
Commutation so that the non-milling train side temperature of heating furnace is higher than 10 DEG C of milling train side, to make up afterbody thermal loss.
(4) ensure that strand will meet in stove heat time, heat time：Cold base is that less than 300 DEG C time inside furnaces must expire
Sufficient 160min, 300 DEG C~500 DEG C hot bases meet 145min.
Example 1：T0=300 DEG C, t >=160min；
Example 2：T0=450 DEG C, t >=150min.
(5) workpiece thickness is 30mm, and camber controls within 20mm, more than 20mm, F1-F4 need to be rectified a deviation.
If reaping hook bends towards fore side, fore side gap values between rollers are reduced manually, until strip is straight；If bending towards transmission side, transmission is reduced manually
Side gap values between rollers, until strip is straight.
(6) R2 extreme traces time side pressure control need to change sharing of load between 18~20mm more than 20mm.
(7) roughing to roller-way cooling water between finish rolling will be turned down suitably, and Coil Box comes into operation.Ensure among finish rolling entrance
For base temperature control more than 1060 DEG C, the middle base total length temperature difference is less than 20 DEG C.
(8) 0.05m/s is defined to finishing mill acceleration2, threading speed is limited to 10.5m/s；
(9) loop tension setting L1：7.31N/mm、L2：9.76N/mm、L3：12.68、L4:15.70、L5：18.97N/
mm、L6：22.17N/mm, if L6 kinks actual tension is less than 22N/mm, parameter is modified in one-level, increase L6 lives
Cover unit tension.
(10) finish rolling rolling force setup F1:24.30MN F2:23.81MN F3:22.43MN F4:20.08MN F5:
17.03MN F6:16.54MN F7:13.01MN.When F5 detects that tail part of band steel throws steel, quickly upper lift to roll-force is 3.31 to F6
~4.96MN, F7 are quickly upper to be lifted to without roll-force.
(11) interstand cooling water, anti-peeling water are closed, in addition to F7 side spray water is normally opened, remaining side spray water Close All, is protected
Finishing temperature control is demonstrate,proved more than 850 DEG C.
Finally, it is to be noted that, term " comprising ", "comprising" or its any other variant be intended to it is non-exclusive
Property includes, so that process, method, article or equipment including a series of elements not only include those key elements, and
Also include the other element that is not expressly set out, or also include for this process, method, article or equipment inherently
Key element.
Claims (7)
- A kind of 1. method for improving Thin container plate hot rolling stability, for making below 1.6mm Thin Specs packagings Boxboard, it is characterised in that comprise the following steps：S1, each rolling scaduled continuous layout are no more than 18 pieces；S2, control heating furnace tapping temperature are not less than 1330 DEG C, and tail temperature is higher than 5~10 DEG C of head temperature；S3, workpiece thickness 30mm, camber control within 20mm, more than 20mm, F1~F4 need to be rectified a deviation；S4, R2 extreme trace time side pressure control need to change sharing of load between 18~20mm more than 20mm；For base temperature control more than 1060 DEG C, the middle base total length temperature difference is less than 20 DEG C, and different heating-furnace among s5, finish rolling entrance Middle base enter finishing mill the different plate temperature difference be less than 20 DEG C；S6,0.05m/s is defined to finishing mill acceleration2, threading speed is limited to 10.5m/s；S7, last machine frame loop tension force setting L6：22~25N/mm, need to be to L6 kinks if L6 loop tensions are less than 22N/mm Power is modified；S8, F6, F7 use auto lifting roll gap function in rolling afterbody, and F5~F7 afterbody flipper guides are opened to maximum；S9, finishing temperature control are more than 850 DEG C.
- 2. the method according to claim 1 for improving Thin container plate hot rolling stability, it is characterised in that：Institute Stating step s2 control method includes：Cold base is that less than 300 DEG C time inside furnaces must are fulfilled for 160min, 300 DEG C~500 DEG C hot bases Meet 145min, the non-milling train side heating 65s commutations of recuperative heater, milling train side heating 60s commutations.
- 3. the method according to claim 1 for improving Thin container plate hot rolling stability, it is characterised in that：Institute Stating step s3 control method includes：If reaping hook bends towards fore side, fore side gap values between rollers are reduced manually, until strip is straight；If Transmission side is bent towards, transmission side gap values between rollers are reduced manually, until strip is straight.
- 4. the method according to claim 1 for improving Thin container plate hot rolling stability, it is characterised in that：Institute Stating step s5 control method includes：Heating furnace includes 1# heating furnaces, 2# heating furnaces and the 3# heating furnaces set gradually, wherein, 2# heating furnace tapping temperatures are higher than 5 DEG C of the 1# heating furnaces close to milling train, and the 3# heating furnaces away from milling train are higher than 1# heating furnaces 10℃。
- 5. the method according to claim 1 for improving Thin container plate hot rolling stability, it is characterised in that：Institute Stating step s7 control method includes：Parameter is modified in one-level, increases L6 kink unit tensions.
- 6. the method according to claim 1 for improving Thin container plate hot rolling stability, it is characterised in that：Institute Stating step s8 control method includes：When F5 detects that tail part of band steel throws steel, quickly upper lift to roll-force is original 20% to F6 ~30%, F7 are quickly upper to be lifted to without roll-force.
- 7. the method according to claim 1 for improving Thin container plate hot rolling stability, it is characterised in that：Institute Stating step s9 control method includes：Close interstand cooling water, anti-peeling water, in addition to F7 side spray water is normally opened, remaining side spray water Close All.
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| CN109420681B (en) * | 2017-08-25 | 2020-07-28 | 宝山钢铁股份有限公司 | Method for improving rolling stability in cold continuous rolling process through thickness monitoring |
| CN111633027A (en) * | 2020-06-11 | 2020-09-08 | 攀钢集团攀枝花钢钒有限公司 | Rolling method for prolonging service life of roller for conventional hot continuous rolling thin-specification strip steel |
| CN112207138B (en) * | 2020-09-25 | 2022-08-05 | 攀钢集团西昌钢钒有限公司 | Method for stably controlling finish rolling temperature of high-grade pipeline steel |
| CN113000607B (en) * | 2021-02-20 | 2022-03-11 | 广东韶钢松山股份有限公司 | Control method for cold heading performance stability of ultra-low carbon steel CH1T |
| CN114433626B (en) * | 2022-01-21 | 2024-03-26 | 安阳钢铁股份有限公司 | Method for improving threading stability of hot continuous rolling thin strip steel |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108394A (en) * | 2007-08-22 | 2008-01-23 | 马鞍山钢铁股份有限公司 | Method of sheet billet continuously casting and rolling to produce thin strip steel coil |
| CN101927263A (en) * | 2009-06-24 | 2010-12-29 | 鞍钢股份有限公司 | Method for improving rolling stability of container thin material |
| CN102069092A (en) * | 2010-10-26 | 2011-05-25 | 湖南华菱涟源钢铁有限公司 | Method for producing hot rolling strip steel of 0.6-0.8mm |
| CN102441576A (en) * | 2011-09-13 | 2012-05-09 | 江苏省沙钢钢铁研究院有限公司 | Automatic control method for camber and wedge shape of rough rolling intermediate blank of hot rolling strip steel |
| CN102825065A (en) * | 2012-09-13 | 2012-12-19 | 莱芜钢铁集团有限公司 | Rolling method for steel plates of wide and thin specifications |
| CN103433298A (en) * | 2013-08-15 | 2013-12-11 | 柳州钢铁股份有限公司 | Method for controlling tail portion of thin rolled container plate |
| CN104259204A (en) * | 2014-09-15 | 2015-01-07 | 首钢京唐钢铁联合有限责任公司 | Process optimization method improving rolling and threading of ultrathin strip steel |
-
2016
- 2016-08-30 CN CN201610770344.XA patent/CN106269864B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108394A (en) * | 2007-08-22 | 2008-01-23 | 马鞍山钢铁股份有限公司 | Method of sheet billet continuously casting and rolling to produce thin strip steel coil |
| CN101927263A (en) * | 2009-06-24 | 2010-12-29 | 鞍钢股份有限公司 | Method for improving rolling stability of container thin material |
| CN102069092A (en) * | 2010-10-26 | 2011-05-25 | 湖南华菱涟源钢铁有限公司 | Method for producing hot rolling strip steel of 0.6-0.8mm |
| CN102441576A (en) * | 2011-09-13 | 2012-05-09 | 江苏省沙钢钢铁研究院有限公司 | Automatic control method for camber and wedge shape of rough rolling intermediate blank of hot rolling strip steel |
| CN102825065A (en) * | 2012-09-13 | 2012-12-19 | 莱芜钢铁集团有限公司 | Rolling method for steel plates of wide and thin specifications |
| CN103433298A (en) * | 2013-08-15 | 2013-12-11 | 柳州钢铁股份有限公司 | Method for controlling tail portion of thin rolled container plate |
| CN104259204A (en) * | 2014-09-15 | 2015-01-07 | 首钢京唐钢铁联合有限责任公司 | Process optimization method improving rolling and threading of ultrathin strip steel |
Non-Patent Citations (4)
| Title |
|---|
| CSP生产集装箱板的控轧控冷工艺优化;熊自柳，等;《轧钢》;20080630;第25卷(第3期);第7-10页 * |
| 热轧薄规格生产控制措施与应用;张建华;《金属世界》;20140115(第1期);第57－60页 * |
| 薄规格耐腐蚀集装箱板轧制技术研究;王建功，等;《河北冶金》;20160428(第4期);第29-32页 * |
| 薄规格集装箱板轧制工艺优化;李孟清;《辽宁科技学院学报》;20101230;第12卷(第4期);第10－11页 * |
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