CN104289517A - Production method for off-line subdividing plate s - Google Patents
Production method for off-line subdividing plate s Download PDFInfo
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- CN104289517A CN104289517A CN201410487645.2A CN201410487645A CN104289517A CN 104289517 A CN104289517 A CN 104289517A CN 201410487645 A CN201410487645 A CN 201410487645A CN 104289517 A CN104289517 A CN 104289517A
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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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
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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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B2001/225—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 plates, strips, bands or sheets of indefinite length by hot-rolling
Abstract
The invention discloses a production method for off-line subdividing plates. The method comprises the steps of designing a blank in an MES according to the dimension requirement and the delivery number of finished product steel plates, selecting the thickness of the blank according to the compression ratio requirement, determining the width and the length of the blank according to the width size enlarging amount and the head, tail size enlarging amount, the broadening ratio, burning loss, a sample and cutting allowance, making steel plates get off a line after the blank is subjected to the procedures of heating, rolling, pre-straightening, cooling and warm straightening, after the length of a finishing line or a fire cut line is fixed according to the finishing operation instruction of the MES, conducting off-line subdivision on parent plates with the fixed size in the width direction through a numerical control flame cutting machine, and producing the steel plates with the performance, sizes and specifications meeting the requirement of a user. By means of the production method for off-line subdividing plates, the roll period of rolls for a plate mill for 500mm thick and wide plates is prolonged, roll consumption and the production cost of the steel plates are reduced, the edge cutting amount is reduced and the yield is improved while the transverse performance of the steel plates is improved. The production method for off-line subdividing plates has good economic benefits and social benefits.
Description
Technical field
The invention belongs to steel rolling field, relate to a kind of production method of off-line subdivision plate.
Background technology
Along with user is to the diversified demand of plate size specification, the organization of production difficulty of steel rolling mill is also in increase.The continuous change of rolled piece width brings outside difficulty to Strip Shape Control, shortens the roller phase, adds roller consumption, makes the anxious increasing of the production cost of steel plate.For 5000mm wide and heavy plate mill, can the width of rolled products between 1800 ~ 4850mm.When below 2300mm width rolled piece is produced in a large number, the wear extent in the middle part of working roll is comparatively large, and edge is not is not almost worn and torn, and directly causes a large amount of grindings of the working roll edge that rolls off the production line, and the utilization rate of working roll is low.In the middle part of working roll, edge wearing and tearing differ greatly, also directly affect in the middle part of backing roll with the degree of wear of edge, shorten the roller phase of backing roll.In addition, when below 2300mm width rolled piece is produced in a large number, the production capacity of 5000mm wide and heavy plate mill is lower, is difficult to reach product and reaches effect.And below 2300mm width rolled piece adopt doubly wide design, off-line subdivision time, then solve the problems referred to above, while increase yield, reduce the production cost of steel plate.
Summary of the invention
The object of the present invention is to provide a kind of production method of off-line subdivision plate, the production of 10 ~ 50mm is thick, 1500 ~ 2300mm is wide Q460 and following intensity rank off-line subdivision plate can be realized at 5000mm Heavy Plate Rolling Line.The following technical scheme of concrete employing:
A production method for off-line subdivision plate, is characterized in that adopting doubly wide rolling, producing with many multiple lengths or single multiple length tissue, comprises the steps:
(1) according to dimensional requirement, the delivery block number of finished steel plate, blank design is carried out in MES system:
Require to select stock thickness according to compression ratio, put dipstick metering according to doubly wide and multiple length size, width, put dipstick metering, broadening ratio, scaling loss, sampling and shear surplus determination stock width, length end to end;
(2) produce stock by designing requirement, blank is by after heating, rolling, pre-straightening, ultrafast cold, the straight operation of temperature correction, and steel plate rolls off the production line;
(3) according to MES system finishing operation instruction, after finishing line or fiery tangential length scale, at width off-line subdivision scale motherboard, performance and the satisfactory steel plate of dimensions is produced.
Tool of the present invention has the following advantages:
1, the present invention adopts doubly wide rolling to below 2300mm width rolled piece, the following width rolled piece of more single full axial rolling 2300mm, and blank substance used is large, and expense cut by the cutting quantity and the fire that decrease blank, improves blank dress steel rhythm and rolling yield.
2, the present invention adopts doubly wide rolling to below 2300mm width rolled piece, extends the roller phase of 5000mm wide and heavy plate mill, reduces the production cost of roller consumption and steel plate.
3, the present invention adopts doubly wide rolling to below 2300mm width rolled piece, and rolling mode, for roll in length and breadth, improves the lateral performance of steel plate.
4, the present invention adopts doubly wide rolling, off-line subdivision to below 2300mm width rolled piece, decreases trimming amount, improves lumber recovery.
The present invention is applicable to production 10 ~ 50mm is thick, 1500 ~ 2300mm is wide Q460 and following intensity rank off-line subdivision plate.
Detailed description of the invention
A kind of production method of off-line subdivision plate, the method is according to dimensional requirement (below 2300mm width), the delivery block number of finished steel plate in order, blank design is carried out in MES system, require to select sotck thinkness according to compression ratio, selectable sotck thinkness is respectively 150mm, 180mm, 220mm, 260mm, 320mm; Blank width according to rolled piece double width size, width puts dipstick metering and broadening ratio designs; Charge length then considers rolled piece multiple length situation, puts dipstick metering, scaling loss, sampling and shearing surplus end to end, calculates according to constant-volume principle.Blank is after the straight operation of heating, rolling, pre-straightening, cooling and temperature correction, steel plate rolls off the production line, according to MES system finishing operation instruction after finishing line (or fiery tangent line) length scaling, by NC flame cutting machine by scale motherboard at width off-line subdivision, produce performance and dimensions and meet the steel plate that user requires.
Specifically comprise the following steps:
(1) when below 2300mm width rolled piece doubly wide design, many multiple lengths or single multiple length tissue are produced, width puts chi 130 ~ 140mm, puts chi 500 ~ 1400mm end to end, broadening ratio 1.2 ~ 1.7, sampling and shearing surplus 400 ~ 1500 mm;
(2) produce stock by designing requirement, blank is after the straight operation of heating, rolling, pre-straightening, cooling and temperature correction, and steel plate rolls off the production line;
(3) below 30mm thickness steel plate delivers to finishing line, finishing line operating personnel indicate in interface when " production remarks " that front spring is " in the middle of width multiple length point plate " according to MES system finishing operation, at nibbling shear head, back-end crop, bilateral scissors are crossed, at fixed size scissors to steel plate length scale through bilateral shearing bilateral (burr resection controls between 100 ~ 110mm) or sky; 30 ~ 50mm thickness steel plate rolls off the production line cooling in heap.
Below 30mm thickness steel plate, after nibbling shear head, back-end crop, determines whether through bilateral scissors trimming according to rolled piece plate shape: rolled piece plate shape without lateral bending or lateral bending slightly, then trimming on finishing line; Rolling slab lateral cambering is comparatively obvious, then not trimming on finishing line, forwards fiery tangent line trimming to by straddle carrier, to ensure that the width tolerance of often opening off-line subdivision plate is between+10 ~+15mm.
(4) motherboard of often opening after finishing line length scaling carries out online head-stamp through the spray of print-marking machine table, side spray and the mode of beating steel seal, and head-stamp content comprises steel grade, dimensions, operative norm, steel plate number, date of manufacture and trade mark etc.;
(5) doubly wide motherboard hangs straddle carrier from finishing line, and forwards fiery tangent line to through straddle carrier; Roll off the production line cooling in heap 30 ~ 50mm thickness doubly wide motherboard forward fiery tangent line to by driving;
(6) will doubly wide motherboard hang cutting stand on carry out off-line subdivision, through the doubly wide motherboard of bilateral scissors trimming, a cutting head of NC flame cutting machine is located, according to starting point coordinate and the accurate positional dissection path of terminal point coordinate at middle part the cutting position in the middle part of it; Without the doubly wide motherboard of bilateral scissors trimming, three cutting heads of NC flame cutting machine are in the middle part of it and the cutting position location of two edge, according to starting point coordinate and the accurate positional dissection path of terminal point coordinate at edge, middle part, cutting position ensures that the width tolerance of often opening subdivision plate is between+10 ~+15mm.
(7) after subdivision plate off-line has cut, carry out off-line head-stamp to the daughter board of online head-stamp, head-stamp content comprises steel grade, dimensions, operative norm, steel plate number, date of manufacture and trade mark etc.
Embodiment 1
The present embodiment selects 10mm*2300mm*10000mm Q345B off-line subdivision plate, and its production method is specific as follows:
(1) according to order situation, rolled piece is produced according to doubly wide design, 3 multiple length tissues, and width puts chi 140mm, broadening ratio 1.69, puts chi 1300mm end to end, and sampling and shearing surplus put chi 1000mm.Rolled piece according to rolling with negative tolerance, workpiece measurement=9.85mm* (2300mm*2+140mm) * (10000mm*3+1300mm+1000mm)=9.85mm*4740mm*32300mm.Blank width=4740mm/1.69=2805mm, according to compression ratio requirement, sotck thinkness selects 150mm, and scaling loss calculates according to 0.7%, charge length=(9.85mm*4740mm*32300mm)/(150mm*2805mm* (1-0.7%))=3609mm;
(2) steel-making and continuous casting plan is assigned according to design billet size in conjunction with section blank needed for steel grade identical in other orders, or two are carried out to the existing identical steel grade in slab storehouse and the close continuous casting billet of cross dimensions cut, blank is after the straight operation of heating, rolling, pre-straightening and temperature correction, steel plate rolls off the production line, and delivers to finishing line;
(3) finishing line operating personnel indicate when " production remarks " that front spring is " in the middle of width multiple length point plate " in interface according to MES system finishing operation, and when front spring is at nibbling shear head, back-end crop, sky crosses bilateral scissors, at fixed size scissors to steel plate length scale;
(4) 3 motherboards after length scaling carry out online head-stamp through the spray of print-marking machine table, side spray and the mode of beating steel seal, and head-stamp content comprises steel grade, dimensions, operative norm, steel plate number, date of manufacture and trade mark etc.;
(5) doubly wide motherboard hangs straddle carrier from finishing line, and forwards fiery tangent line to through straddle carrier;
(6) will doubly hang on cutting stand by wide motherboard, three cutting heads of NC flame cutting machine are in the middle part of it and the cutting position location of two edge, cutting position ensures often to open the width tolerance of subdivision plate for+15mm, two burr cutting width 110mm, according to cutting starting point coordinate and cutting end point coordinate determination cutting path, cutting straight line length setting=steel plate length+2000mm, carries out gas flame cuttiug to 3 motherboards according to the method described above;
After (7) 6 pieces of subdivision plate off-lines have cut, off-line head-stamp is carried out to 3 daughter boards of not online head-stamp, head-stamp content comprises steel grade, dimensions, operative norm, steel plate number, date of manufacture and trade mark etc., and except steel plate difference, other head-stamp contents are identical.
Embodiment 2
The present embodiment selects 22mm*1524mm*6096mm Q235B-B off-line subdivision plate, and its production method is specific as follows:
(1) according to order situation, rolled piece is produced according to doubly wide design, 6 multiple length tissues, and width puts chi 136mm, broadening ratio 1.33, puts chi 1100mm end to end, and sampling and shearing surplus put chi 1500mm.Rolled piece according to rolling with negative tolerance, workpiece measurement=21.75mm* (1524mm*2+136mm) * (6096mm*6+1100mm+1500mm)=21.75mm*3184mm*39176mm.Blank width=3184mm/1.33=2394mm, according to compression ratio requirement, sotck thinkness selects 260mm, and scaling loss calculates according to 0.7%, charge length=(21.75mm*3184mm*39176mm)/(260mm*2394mm* (1-0.7%))=4389mm;
(2) steel-making and continuous casting plan is assigned according to design billet size in conjunction with section blank needed for steel grade identical in other orders, or two are carried out to the existing identical steel grade in slab storehouse and the close continuous casting billet of cross dimensions cut, blank is after the straight operation of heating, rolling, pre-straightening, cooling and temperature correction, steel plate rolls off the production line, and delivers to finishing line;
(3) finishing line operating personnel indicate in interface when " production remarks " that front spring is " in the middle of width multiple length point plate " according to MES system finishing operation, when front spring is at nibbling shear head, back-end crop, through bilateral shearing bilateral (burr resection controls at 106mm), at fixed size scissors to steel plate length scale;
(4) 6 motherboards after length scaling carry out online head-stamp through the spray of print-marking machine table, side spray and the mode of beating steel seal, and head-stamp content comprises steel grade, dimensions, operative norm, steel plate number, date of manufacture and trade mark etc.;
(5) doubly wide motherboard hangs straddle carrier from finishing line, and forwards fiery tangent line to through straddle carrier;
(6) will doubly hang on cutting stand by wide motherboard, a cutting head of NC flame cutting machine is to the cutting position location in the middle part of it, cutting position ensures that the width tolerance of often opening subdivision plate is at+12mm, according to cutting starting point coordinate and cutting end point coordinate determination cutting path, cutting straight line length setting=steel plate length+1000mm, carries out gas flame cuttiug to 6 motherboards according to the method described above;
After (7) 12 pieces of subdivision plate off-lines have cut, off-line head-stamp is carried out to 6 daughter boards of not online head-stamp, head-stamp content comprises steel grade, dimensions, operative norm, steel plate number, date of manufacture and trade mark etc., and except steel plate difference, other head-stamp contents are identical.
Embodiment 3
The present embodiment selects 50mm*2050mm*12200mm Q345B off-line subdivision plate, and its production method is specific as follows:
(1) according to order situation, rolled piece is produced according to doubly wide design, single multiple length tissue, and width puts chi 130mm, broadening ratio 1.68, puts chi 700mm end to end, and sampling and shearing surplus put chi 400mm.Rolled piece according to rolling with negative tolerance, workpiece measurement=49.53mm* (2050mm*2+130mm) * (12200mm+700mm+400mm)=49.53mm*4230mm*13300mm.Blank width=4230mm/1.68=2518mm, according to compression ratio requirement, sotck thinkness selects 320mm, and scaling loss calculates according to 0.7%, charge length=(49.53mm*4230mm*13300mm)/(320mm*2518mm* (1-0.7%))=3483mm;
(2) steel-making and continuous casting plan is assigned according to design billet size in conjunction with section blank needed for steel grade identical in other orders, or two are carried out to the existing identical steel grade in slab storehouse and the close continuous casting billet of cross dimensions cut, blank is after the straight operation of heating, rolling, pre-straightening, cooling and temperature correction, and steel plate rolls off the production line cooling in heap;
(3), after heap cool time reaches technological requirement, steel plate forwards fiery tangent line to by driving, fire tangent line operating personnel indicate in interface when " production remarks " that front spring is " in the middle of width multiple length point plate " according to MES system finishing operation, to doubly hang on cutting stand by wide motherboard, according to order length requirement to doubly wide motherboard scale (excising circular arc end to end), three cutting heads of NC flame cutting machine are in the middle part of it and the cutting position location of two edge, cutting position ensures often to open the width tolerance of subdivision plate for+10mm, two burr cutting width 100mm, according to cutting starting point coordinate and cutting end point coordinate determination cutting path, cutting straight line length setting=steel plate length+1500mm, according to the method described above gas flame cuttiug is carried out to motherboard,
After (4) two pieces of subdivision plate off-lines have cut, off-line head-stamp is carried out to two daughter boards of not online head-stamp, head-stamp content comprises steel grade, dimensions, operative norm, steel plate number, date of manufacture and trade mark etc., and except steel plate difference, other head-stamp contents are identical.
Claims (8)
1. a production method for off-line subdivision plate, is characterized in that adopting doubly wide rolling, producing with many multiple lengths or single multiple length tissue, comprises the steps:
(1) according to dimensional requirement, the delivery block number of finished steel plate, blank design is carried out in MES system:
Require to select stock thickness according to compression ratio, put dipstick metering according to doubly wide and multiple length size, width, put dipstick metering, broadening ratio, scaling loss, sampling and shear surplus determination stock width, length end to end;
(2) produce stock by designing requirement, blank is by after heating, rolling, pre-straightening, ultrafast cold, the straight operation of temperature correction, and steel plate rolls off the production line;
(3) according to MES system finishing operation instruction, after finishing line or fiery tangential length scale, at width off-line subdivision scale motherboard, performance and the satisfactory steel plate of dimensions is produced.
2. the production method of off-line subdivision plate according to claim 1, is characterized in that: it is 130 ~ 140mm that width puts dipstick metering, putting dipstick metering is end to end 500 ~ 1400mm, and broadening ratio is 1.2 ~ 1.7, and sampling and shearing surplus are 400 ~ 1500 mm.
3. the production method of off-line subdivision plate according to claim 1, it is characterized in that: finishing line operating personnel indicate according to MES system finishing operation, below 30mm thickness steel plate is at nibbling shear head, back-end crop, through the bilateral or empty bilateral scissors excessively of bilateral shearing, burr resection controls at 100 ~ 110mm, at fixed size scissors to steel plate length scale; 30 ~ 50mm thickness steel plate rolls off the production line cooling in heap, forwards fiery tangential length scale, width subdivision to by driving.
4. the production method of off-line subdivision plate according to claim 3, it is characterized in that: below 30mm thickness steel plate is after nibbling shear head, back-end crop, determine whether through bilateral scissors trimming according to rolled piece plate shape: rolled piece plate shape without lateral bending or lateral bending slightly, then trimming on finishing line; Rolling slab lateral cambering is comparatively obvious, then not trimming on finishing line, forwards fiery tangent line trimming to by straddle carrier, to ensure that the width tolerance of often opening off-line subdivision plate is between+10 ~+15mm.
5. the production method of off-line subdivision plate according to claim 1, it is characterized in that: the motherboard of often opening after finishing line length scaling carries out online head-stamp through the spray of print-marking machine table, side spray and the mode of beating steel seal, head-stamp content comprises steel grade, dimensions, operative norm, steel plate number, date of manufacture and trade mark.
6. the production method of off-line subdivision plate according to claim 1, it is characterized in that: after finishing line length scaling, doubly wide motherboard hangs straddle carrier from finishing line, and forwards fiery tangent line to through straddle carrier, hangs on cutting stand and carries out off-line subdivision; Through the doubly wide motherboard of bilateral scissors trimming, a cutting head of NC flame cutting machine is located, according to starting point coordinate and the accurate positional dissection path of terminal point coordinate at middle part the cutting position in the middle part of it; Without the doubly wide motherboard of bilateral scissors trimming, three cutting heads of NC flame cutting machine respectively in the middle part of it and the cutting position location of two edge, according to starting point coordinate and the accurate positional dissection path of terminal point coordinate at edge, middle part; Cutting position ensures that the width tolerance of often opening subdivision plate is between+10 ~+15mm; Cutting position carries out the cutting of subdivision plate off-line after having located.
7. the production method of off-line subdivision plate according to claim 1, it is characterized in that: after motherboard off-line subdivision completes, carry out off-line head-stamp to the daughter board of online head-stamp, head-stamp content comprises steel grade, dimensions, operative norm, steel plate number, date of manufacture and trade mark.
8. the production method of off-line subdivision plate according to claim 1, is characterized in that: according to finished steel plate thickness, and require to carry out sotck thinkness design according to compression ratio, selectable sotck thinkness is respectively 150mm, 180mm, 220mm, 260mm, 320mm; Blank width according to rolled piece double width size, width puts dipstick metering and broadening ratio designs; Charge length then considers rolled piece multiple length size, puts dipstick metering, scaling loss, sampling and shearing surplus end to end, calculates according to constant-volume principle.
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Cited By (5)
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| CN105701310A (en) * | 2016-02-01 | 2016-06-22 | 重庆钢铁(集团)有限责任公司 | Computing method and system for steel-plate broadening heat releasing size amount |
| CN107138536A (en) * | 2017-06-16 | 2017-09-08 | 安徽工程大学 | The blank selection method of double sizing plates in a kind of Plate rolling |
| WO2021027449A1 (en) * | 2019-08-15 | 2021-02-18 | 重庆大学 | Method and model system for plate assembling and slab designing of medium-thickness hot rolled plate in consideration of flexible non-fixed-size order specifications |
| CN112792506A (en) * | 2021-01-04 | 2021-05-14 | 南京钢铁股份有限公司 | Off-line intelligent production method for wide and thick plate |
| CN112845620A (en) * | 2021-03-12 | 2021-05-28 | 南京钢铁股份有限公司 | Simple method for determining head and tail ruler-setting amount based on different compression ratios |
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| CN112792506A (en) * | 2021-01-04 | 2021-05-14 | 南京钢铁股份有限公司 | Off-line intelligent production method for wide and thick plate |
| CN112845620A (en) * | 2021-03-12 | 2021-05-28 | 南京钢铁股份有限公司 | Simple method for determining head and tail ruler-setting amount based on different compression ratios |
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Application publication date: 20150121 |