CN106475412A - A kind of milling method of cut deal - Google Patents

A kind of milling method of cut deal Download PDF

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Publication number
CN106475412A
CN106475412A CN201510530188.5A CN201510530188A CN106475412A CN 106475412 A CN106475412 A CN 106475412A CN 201510530188 A CN201510530188 A CN 201510530188A CN 106475412 A CN106475412 A CN 106475412A
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China
Prior art keywords
rolling
width
blank
cut deal
broadening
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CN201510530188.5A
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Chinese (zh)
Inventor
谢居庆
谢平
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Baoshan Iron and Steel Co Ltd
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Baoshan Iron and Steel Co Ltd
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Priority to CN201510530188.5A priority Critical patent/CN106475412A/en
Publication of CN106475412A publication Critical patent/CN106475412A/en
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Abstract

The present invention relates to a kind of milling method of cut deal, described milling method adopts the method that single-ended roll gap tilts broadening rolling, first will press wherein on the roll gap of one end, carry out single-ended roll gap and tilt broadening rolling pass, the other end is in unloaded filling, then the other end is carried out with pressure on roll gap, start single-ended roll gap and tilt broadening rolling pass, the two ends of blank are carried out intersecting single-ended roll gap inclination broadening rolling, the width of blank end is made to be consistent with the width at middle part, thus realizing the even width rolling of cut deal, in order to solve, steel plate broadening ratio is big and steel plate surface grinding causes steel plate two broad in the middle little, the uneven problem of width.

Description

A kind of milling method of cut deal
Technical field
The present invention relates to Medium and Heavy Plate Rolling plane-view Shape Control Technology is and in particular to a kind of milling method of cut deal.
Background technology
Heavy plate rolling is used for thickness steel plate in rolling, the referred to as middle thickness steel plate of steel board of more than thickness 4mm.Slab The operation of rolling is the process of a steel plate becoming certain size with the slab rolling of certain size, used in rolling journey Rolling mode by slab and steel plate size determine.
The heating cycle that the production procedure of cut deal is generally come out of the stove using low temperature, can save fuel consumption, rolling mill practice Divide three phases:
1. roll forming, eliminates the impact of steel slab surface and the precision improving width control system, along slab length direction Or oblique carry out 1~4 road rolling, blank is rolled to required thickness.
2. broadening rolling, this is the important procedure that cut deal is different from other species plate rollings.For reaching rolling Width required by rolling target, slab turns 90 °, along plate width direction rolling.
3. finish rolling, turns 90 ° again after broadening rolling, goes back to blank material length direction, be rolled down to finished plate thickness. Properly formulate Medium and Heavy Plate Rolling technique and can improve the production capacity of milling train, the quality of steel plate and lumber recovery.
For example:For Q345B billet size:297 × 2100 × 4550 millimeters, roll size 40 × 3841 × 18470 Millimeter, rolls according to target width 3841+50=3891 millimeter in advance, first turns steel rolling 297 millimeters of steel plate transverse rollings Turn 90 degree of steel to 156 millimeters of 3891 millimeters of target widths of arrival of thickness, actual 3896 millimeters of intermediate width of measurement, 3816 millimeters of head width, 3806 millimeters of afterbody.
Control technology now, because blank reconditioning and steel plate broadening ratio are big, causes the uneven feelings of steel plate head and tail width Condition, as illustrated in fig. 1 and 2, Fig. 1 is because broadening ratio is big, causes small in ends, situation broad in the middle, such as Fig. 2 It is due to the reconditioning of blank one end, cause little, a broad in the middle situation.In actual production, by increasing burr Steel plate put chi width (40--80 millimeter), to realize meeting the width requirement of finished steel plate, to reduce lumber recovery, Simultaneously as the surface of blank carries out cleaning irregularly, cause blank width and the deviation of thickness, increase further Bulge shape (as Fig. 1) on width, rolling width is wider, spreads more serious than big situation, causes width Degree changes chi, and the big loss of billet weight is big.
Content of the invention
It is an object of the invention to provide a kind of milling method of cut deal, described milling method is inclined using single-ended roll gap The two ends of blank are carried out intersecting single-ended roll gap inclination broadening rolling, make blank end by the tiltedly method of broadening rolling Width is consistent with the width at middle part, thus realizing the even width rolling of cut deal, in order to solve steel plate broadening Cause steel plate two broad in the middle little than big and steel plate surface grinding, the uneven problem of width.
For achieving the above object, the solution of the present invention is:A kind of milling method of cut deal, described cut deal rolls Method processed specifically includes following steps:
(1) according to the Medium and Heavy Plate Rolling target setting, broadening rolling is carried out by centering slab blank, makes cut deal The middle part width of blank reaches rolling target width, and compares now inclined with the width at both ends in the middle part of cut deal blank Difference;
(2) when the wherein one end of described cut deal blank exceedes set point with the width difference at middle part, by institute Press on the wherein one end roll gap stated, carry out single-ended roll gap and tilt broadening rolling, the other end is in Light Condition, Do not enter line broadening rolling, until this end portion width of described cut deal blank is consistent with the width at middle part;
(3) when in the middle of, the both ends of slab blank and the width difference at middle part all exceed set point, according to step (2) Method, the both ends of centering slab blank intersect respectively and carry out single-ended roll gap and tilt broadening rolling, until cut deal The width at blank both ends is consistent with the width at middle part;
(4) length direction of tailing edge cut deal blank, cut deal blank is rolled down to the thickness of rolling target, complete Become the rolling of cut deal.
The rolling method of the application, by way of using single-ended roll gap tilt rolling, improves cut deal planar shaped The bad situation of shape, can reduce the width addition of current steel plate, and the chi width of putting of burr steel plate substantially reduces, The lumber recovery of steel plate is also greatly improved simultaneously.
Further, the milling method according to cut deal of the present invention, passes through in described cut deal blank end In the case of reconditioning, cut deal blank occurs the little defect of reconditioning end width, and centering slab blank first is indulged To roll forming, then turn 90 ° of steel again, cut deal blank carried out horizontal broadening rolling, roll target Width, then reconditioning end is carried out with single-ended roll gap inclination broadening rolling.This milling method can realize blank one is brought out The improvement of the existing narrow defect of width, improves lumber recovery.
Further, the milling method according to cut deal of the present invention, in described step (1), to be rolled In the case that the broadening ratio of cut deal processed is more than 1.8, cut deal blank occurs the little defect in both ends, right first Cut deal blank carries out horizontal broadening rolling, and cut deal blank is rolled target width, in the rolling of horizontal broadening After end, more single-ended roll gap inclination broadening rolling is carried out to the end of blank.For two ends, width all occurs narrow Situation, the milling method of the application, by way of intersecting single-ended tilt rolling, still can be improved, and improves Plate quality.
Further, the milling method according to cut deal of the present invention, in described step (1), wide by surveying Instrument records the width at reconditioning end, and the width at reconditioning end is compared with middle part width.
Further, the milling method according to cut deal of the present invention, in described step (1), in rolling Before, according to actual measurement, obtain the mapping table of broadening ratio and width difference, and be rolled down in cut deal blank After rolling target width, calculate the broadening ratio of cut deal to be rolled, then pass through to inquire about described width difference and broadening The mapping table of ratio, determines the width difference of cut deal blank, obtains the width at cut deal blank both ends.
Further, the milling method according to cut deal of the present invention, in described step (2) and (3), When carrying out single-ended roll gap inclination broadening rolling, the size according to cut deal blank end and rolling target size first, Using volume principle, determine that cut deal blank end needs the thickness of rolling, the thickness of this needs rolling can make Width after end dwell rolling is consistent with middle part width, so that it is determined that pressure amount on roll gap during rolling, then enters again The single-ended roll gap of row tilts broadening rolling.By calculating the thickness needing rolling, further determine that pressure amount on roll gap, choosing Select suitable roll gap it is ensured that only rolling to the one end needing broadening, it is to avoid the other end is forced into, impact is final Broadening rolling.
Further, the milling method according to cut deal of the present invention, in described step (3), first During passage, first roll gap pressure is carried out to the wherein one end of blank, carry out single-ended roll gap and tilt broadening rolling, another End does not contact roll with middle part, is in Light Condition, in lower a time, changes the other end and carries out single-ended roller Seam tilts broadening rolling, and such cross-circulation rolling, till the width at both ends reaches rolling target width. By tandem rolling, solve middle wide defect small in ends, improve the uniformity of steel plate, improve rolling quality.
Further, the milling method according to cut deal of the present invention, described cut deal blank end needs to roll System thickness be:
H=H1-H2
H2=B1×H1/B2
Wherein, H needs the reduction in thickness of rolling for cut deal blank end;
B1It is the width of end after broadening rolling;
H1It is the thickness of cut deal blank after broadening rolling;
H2It is rolled down to the thickness that rolling target width needs reach for end;
B2For rolling target width.
Further, the milling method according to cut deal of the present invention, according to described H-number, is guaranteeing sky In the case that load end is not pressed onto by roll with middle part, determine pressure amount on roll gap.Select suitable gap values between rollers, it is to avoid another One end is forced into.
Further, the milling method according to cut deal of the present invention, on described roll gap, pressure measures value and is: H+(1-6)mm.To unloaded one end, leave certain space, it is to avoid during single-ended rolling, the other end also by Roll is depressed, the accuracy of influence of rolled width, reduces rolling quality.
The beneficial effect that the present invention reaches:The rolling method of the application is passed through using single-ended roll gap tilt rolling Mode, end is little occurring, and during the big defect in middle part, first wherein one end is carried out with the broadening rolling of roll gap inclination Passage, then the other end is carried out with the broadening rolling pass of roll gap inclination, finally make end portion width and middle part width It is consistent, improves the bad situation of cut deal flat shape, reduce the width addition of current steel plate, burr The chi width of putting of steel plate substantially reduces, and the lumber recovery of steel plate is also greatly improved simultaneously.
Brief description
Fig. 1 is the defect schematic diagram small in ends broad in the middle that existing rolling mode causes;
Fig. 2 is the little defect schematic diagram broad in the middle in one end that existing rolling mode causes;
Fig. 3 is the operation of rolling schematic diagram of the embodiment of the present application one;
Fig. 4 is after embodiment one, the improvement schematic diagram of steel plate;
Fig. 5 is the operation of rolling schematic diagram of the embodiment of the present application two;
Fig. 6 be the application after embodiment two, the improvement schematic diagram of steel plate.
Specific embodiment
The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings.
In the operation of rolling of cut deal, because blank reconditioning and steel plate broadening ratio are big, cause steel plate head and tail width Uneven, in actual production, by increase burr steel plate put chi width, to realize meeting the width of finished steel plate Degree requires, but do so greatly reduces the lumber recovery of steel plate.For above-mentioned situation, the application proposes a kind of single-ended Roll gap tilts broadening milling method, and this milling method, by the way of single-ended roll gap tilt rolling, improves cut deal and puts down The situation of face shape defect, can reduce the width addition of current steel plate, and the chi width of putting of burr steel plate drops significantly Low, so that the lumber recovery of steel plate is greatly improved.
Embodiment:
The milling method of the present embodiment, is the underneath type Hydraulic Roll Gap Control System that make use of 5 meters of milling trains to adopt (HGC), roll gap can all be adjusted in the case of the unloaded load with band, the milling method of the present embodiment specifically includes Following steps:
(1) according to the Medium and Heavy Plate Rolling target setting, broadening rolling is carried out by centering slab blank, makes cut deal The middle part width of blank reaches rolling target width, and compares now inclined with the width at both ends in the middle part of cut deal blank Difference.
For the cut deal blank through reconditioning, recorded the width at reconditioning end by width gage, larger for broadening ratio Cut deal to be rolled, by calculating broadening ratio, according to the relation of broadening ratio and width difference, obtains width difference, And determine the width at both ends.
(2) when the wherein one end of described cut deal blank exceedes set point with the width difference at middle part, adopt Hydraulic Roll Gap Control System, controls the single-ended roll gap of roll to tilt, and will press, centering on described wherein one end roll gap One end of slab blank carries out single-ended roll gap and tilts broadening rolling pass, and the other end is in Light Condition, does not carry out Broadening rolls, until this end portion width of described cut deal blank is consistent with the width at middle part;
(3) when in the middle of, the both ends of slab blank and the width difference at middle part all exceed set point, centering heavy slab The both ends of material intersect respectively and carry out single-ended roll gap and tilt broadening rolling, until cut deal blank both ends width with The width at middle part is consistent, specially:
Using Hydraulic Roll Gap Control System, the single-ended roll gap of roll is controlled to tilt, one end of centering slab blank is rolled Passage processed, the other end is in no-load condition and does not enter line broadening, and next passage carries out single-ended roll gap using the other end and inclines Oblique broadening rolling, and the one end above having rolled becomes unloaded, is rolled by the intersection broadening at blank two ends, Two end portion width broadenings of blank to identical with middle width.
(4) length direction of tailing edge cut deal blank, cut deal blank is rolled down to the thickness of rolling target, complete Become the rolling of cut deal.
Embodiment one:
For the big situation of broadening ratio:When broadening ratio is larger, in the case that is, broadening ratio is more than 1.8, easily go out Existing defect broad in the middle small in ends, is therefore directed to this situation, and the present embodiment is entered by the way of above-mentioned steps (3) The single-ended roll gap of row tilts broadening rolling.
First, before broadening rolling, according to actual measurement, obtain the mapping table of broadening ratio and width difference, As shown in table 1.
Table 1 broadening ratio and the mapping table of width difference
Centering slab blank carries out horizontal broadening rolling, cut deal blank is rolled down to rolling target width, horizontal After broadening rolling terminates, more single-ended roll gap inclination broadening rolling is carried out to the end of blank.Carry out single-ended roll gap inclination It is necessary first to determine pressure amount on roll gap before broadening rolling.
Calculate the broadening ratio of cut deal to be rolled, then pass through inquiry table 1, determine the width difference of cut deal blank, Thus according to the rolling target width at middle part, obtaining the width at cut deal blank both ends.
Size according to cut deal blank both ends end and rolling target size, using volume principle, determine Cut deal blank end also needs to the thickness rolling, and the thickness of this needs rolling can make the width after end dwell rolling Consistent with middle part width, the thickness of this needs rolling is:
H=H1-H2
H2=B1×H1/B2
Wherein, H needs the reduction in thickness of rolling for cut deal blank end;B1It is end after broadening rolling The width in portion;H1It is the thickness of cut deal blank after broadening rolling;H2It is rolled down to rolling target width for end Degree needs the thickness reaching;B2For rolling target width.
According to calculated H-number, when determining rolling, Hydraulic Roll Gap Control System needs the single-ended roll gap of roll controlling Upper pressure amount, the present embodiment value is H+ (1~6) mm.The present embodiment passes through to determine pressure amount on roll gap, and it is suitable to select Roll gap is it is ensured that only roll to the one end needing broadening, it is to avoid the other end is forced into, and affects final broadening and rolls System.
According to pressure amount on the roll gap calculating, using Hydraulic Roll Gap Control System, the single-ended roll gap of roll is controlled to tilt, One end of centering slab blank carries out rolling pass, and the other end is in no-load condition and does not enter line broadening, next passage Carry out the broadening rolling of single-ended roll gap inclination using the other end, and the one end above having rolled becomes unloaded, leads to Cross the intersection broadening rolling at blank two ends, two end portion width broadenings of blank to identical with middle width.
Below for steel grade:Q345R billet size:297 × 2100 × 4600 millimeters, Medium and Heavy Plate Rolling target size 32.17 × 4720 × 23530 millimeters, the present embodiment is further described in detail:
It is that the blank of above-mentioned size is rolled down to rolling target size, and avoid middle wide, small in ends defect, this The concrete operation of rolling of embodiment is as shown in Figure 3:
Turn 90 ° of steel first and horizontal broadening rolling carried out to blank, be rolled down to 4720 millimeters of target width, do not turn steel, Now the thickness of blank is 132 millimeters.
Calculate broadening ratio, that is,:Target width/blank width=4600/2100=2.19, according to described broadening ratio Size, by tabling look-up 1, obtains blank intermediate width and 65 millimeters of head and tail width deviation, thus calculating end to end Width is 4720-65=4655 millimeter.
Calculate both ends and be rolled down to target width, need the reduction in thickness of rolling:Calculate end first and be rolled down to mesh The thickness 4655X132/4720=130.2 millimeter that mark width needs reach, because the thickness after broadening rolling is 132 Millimeter is it is therefore desirable to the reduction in thickness of end rolling be:132mm-130.2mm=1.8mm.
When carrying out single-ended roll gap inclination broadening rolling, in order to prevent the other end to be forced into, need under other end machinery pressure Will on lift to 132+3=135 millimeter, on roll gap, pressure amount is set to 3+1.8=4.8 millimeter.
Finally proceed by single-ended roll gap and tilt broadening rolling:As Fig. 3, first in transmission side one side, use Hydraulic Roll Gap Control system controls presses on lower roll transmission side, and working side is motionless, makes to press 4.8 millimeters on transmission side roll gap, carries out roller Seam tilt rolling, make blank transmission side single-ended enter line broadening rolling.Then, lower a time is changed working side list Face, is controlled with Hydraulic Roll Gap Control System and presses in lower roll working side, transmission side is motionless, pressure 4.8 on working side roll gap Millimeter, carry out roll gap tilt rolling, make blank working side single-ended enter line broadening rolling, realize two end faces and carry out roller Seam intersects broadening rolling.
Using HGC Hydraulic Roll Gap feature it is also possible in the case of rolled bands load, using hydraulic roll gap control System, in the operation of rolling, carries out drafts adjustment to roll gap, improves the width inhomogeneities of steel plate, improves steel The squaring degree of plate flat shape, reduces the addition of steel plate, improves the lumber recovery of steel plate.Through the present embodiment Milling method after, the steel plate after resulting improvement is as shown in Figure 4.
Embodiment two:
For cut deal blank end through reconditioning situation:(the exhibition in the case of reconditioning of cut deal blank end Wide ratio is less than 1.8), the little defect broad in the middle in reconditioning end easily occurs, is therefore directed to this situation, the present embodiment pair Reconditioning end carries out the broadening rolling of single-ended roll gap inclination, and the concrete operation of rolling is as follows:
Centering slab blank carries out longitudinal roll forming first, then turns 90 ° of steel again, and cut deal blank is rolled To rolling target width, more single-ended roll gap inclination broadening rolling is carried out to one end of blank reconditioning.
Carry out before single-ended roll gap tilts broadening rolling it is necessary first to determine pressure amount on roll gap.The present embodiment is wide using surveying Instrument records the width at reconditioning end, and according to rolling target size, using volume principle, determines cut deal blank Reconditioning end is rolled down to the reduction in thickness of target width needs, and this reduction in thickness can make the width after end dwell rolling Degree is consistent with middle part width, and this reduction in thickness is:
H=H1-H2
H2=B1×H1/B2
Wherein, H needs the reduction in thickness of rolling for cut deal blank end;B1It is end after broadening rolling The width in portion;H1It is the thickness of cut deal blank after broadening rolling;H2It is rolled down to rolling target width for end Degree needs the thickness reaching;B2For rolling target width.
According to calculated H-number, when determining rolling, Hydraulic Roll Gap Control System needs the single-ended roll gap of roll controlling Upper pressure amount, the present embodiment value is H+ (1~6) mm.The present embodiment passes through to determine pressure amount on roll gap, and it is suitable to select Roll gap it is ensured that only rolling to the one end needing broadening, it is to avoid the other end is forced into, and affects final broadening Rolling.
According to pressure amount on the roll gap calculating, using Hydraulic Roll Gap Control System, the single-ended roll gap of roll is controlled to tilt, One end of centering slab blank carries out rolling pass, and the other end is in no-load condition and does not enter line broadening, makes cut deal one End is rolled down to equal with middle part width, realizes the operation of rolling of cut deal even width.
In the present embodiment, if only one end carries out reconditioning, the present embodiment is entered by the way of above-mentioned steps (2) The single-ended roll gap of row tilts broadening rolling, if two ends have all carried out reconditioning, is entered by the way of above-mentioned steps (3) The single-ended roll gap of row tilts broadening rolling, and certainly, if under the case for this embodiment, broadening ratio is also larger, may go out Show defect small in ends, broad in the middle, one mode carries out single-ended roll gap inclination broadening rolling in conjunction with the embodiments.
Below for steel grade:AB/A36-TM billet size:248 × 2100 × 3320 millimeters, roll size 25.3 × 3769 × 17670 millimeters, the present embodiment is further described in detail:
It is that the blank of above-mentioned size is rolled into target size, and avoid the little defect in middle width reconditioning end, this enforcement The concrete operation of rolling of example is as shown in Figure 5:
First longitudinal roll forming is carried out to blank, blank is rolled down to after 3769 millimeters of target width, then turns steel, Due to steel plate head reconditioning, at reconditioning, width only has 3700 millimeters, and now the thickness of blank is 138 millimeters.
Calculate reconditioning end and be rolled down to during target width in addition it is also necessary to the reduction in thickness of rolling:Calculate reconditioning end first to roll Make the thickness 3700X138/3769=135.4 millimeter that target width needs reach, due to the thickness after broadening rolling For 138 millimeters, the thickness therefore also needing to roll is:138 millimeters -135.4 millimeters=2.6 millimeters.
When carrying out single-ended roll gap inclination broadening rolling, in order to prevent the other end to be forced into, need under other end machinery pressure Lift to 138+3=141 millimeter, on roll gap, pressure amount is set to 4+2.6=6.6 millimeter.
Finally proceed by single-ended roll gap and tilt broadening rolling:As Fig. 5, control roll gap with Hydraulic Roll Gap Control System On transmission side press 6.6 millimeters, carry out single-ended roll gap tilt rolling, make blank transmission side single-ended enter line broadening rolling.
Using HGC Hydraulic Roll Gap feature it is also possible in the case of rolled bands load, using hydraulic roll gap control System, in the operation of rolling, carries out drafts adjustment to roll gap, improves the width inhomogeneities of steel plate, improves steel The squaring degree of plate flat shape, reduces the addition of steel plate, improves the lumber recovery of steel plate.Through the present embodiment Milling method after, the steel plate after resulting improvement is as shown in Figure 6.
The application simply lists two main application examples, and other are any to cause cut deal two little, middle wide Situation, be suitable for the present processes.As shown in table 2, after using the milling method of the application, burr steel The chi width of putting of plate substantially improves, and improves the lumber recovery of steel plate.
The chi width of putting of table 2 burr steel plate improves information slip
The milling method of the application, by the way of single-ended intersection roll gap tilt rolling, improves cut deal flat shape not Good situation, not only improve broadening ratio larger when steel plate defect small in ends, broad in the middle, improve the planar shaped of steel plate Shape, it is also possible to improve the planar disfigurement that other cause because blank shape is bad, for example blank is through reconditioning The too small defect in the end of Shi Zaocheng, tilts broadening rolling by single-ended roll gap, can make at present average lumber recovery by 89.% brings up to 90.2%, reduces the width addition of current steel plate, and the chi width of putting of burr steel plate substantially reduces, So that the lumber recovery of steel plate is greatly improved.

Claims (10)

1. a kind of milling method of cut deal it is characterised in that:Described Medium and Heavy Plate Rolling method specifically includes as follows Step:
(1) according to the Medium and Heavy Plate Rolling target setting, broadening rolling is carried out by centering slab blank, makes cut deal The middle part width of blank reaches rolling target width, and compares now inclined with the width at both ends in the middle part of cut deal blank Difference;
(2) when the wherein one end of described cut deal blank exceedes set point with the width difference at middle part, by institute Press on the wherein one end roll gap stated, carry out single-ended roll gap and tilt broadening rolling, the other end is in Light Condition, Do not enter line broadening rolling, until this end portion width of described cut deal blank is consistent with the width at middle part;
(3) when in the middle of, the both ends of slab blank and the width difference at middle part all exceed set point, according to step (2) Method, the both ends of centering slab blank intersect respectively and carry out single-ended roll gap and tilt broadening rolling, until cut deal The width at blank both ends is consistent with the width at middle part;
(4) length direction of tailing edge cut deal blank, cut deal blank is rolled down to the thickness of rolling target, complete Become the rolling of cut deal.
2. the milling method of cut deal according to claim 1 is it is characterised in that described step (1) In, in described cut deal blank end in the case of reconditioning, cut deal blank occurs that reconditioning end width is little Defect, first centering slab blank carry out longitudinal roll forming, then turn 90 ° of steel again, cut deal blank is entered Row horizontal broadening rolling, rolls target width, then reconditioning end is carried out with single-ended roll gap inclination broadening rolling.
3. the milling method of cut deal according to claim 1 is it is characterised in that described step (1) In, in the case that the broadening ratio of cut deal to be rolled is more than 1.8, cut deal blank occurs little the lacking in both ends Fall into, centering slab blank carries out horizontal broadening rolling first, cut deal blank is rolled target width, in horizontal stroke After terminating to broadening rolling, more single-ended roll gap inclination broadening rolling is carried out to the end of blank.
4. the milling method of cut deal according to claim 2 is it is characterised in that described step (1) In, recorded the width at reconditioning end by width gage, and the width at reconditioning end is compared with middle part width.
5. the milling method of cut deal according to claim 3 is it is characterised in that described step (1) In, before the rolling, according to actual measurement, obtain the mapping table of broadening ratio and width difference, and in cut deal After blank is rolled down to rolling target width, calculate the broadening ratio of cut deal to be rolled, then pass through to inquire about described width Deviation and the mapping table of broadening ratio, determine the width difference of cut deal blank, obtain cut deal blank both ends Width.
6. the milling method of cut deal according to claim 5 is it is characterised in that described step (2) (3) in, when carrying out single-ended roll gap inclination broadening rolling, the size according to cut deal blank end and rolling first Target size, using volume principle, determines that cut deal blank end needs the thickness of rolling, this needs to roll Thickness can make end dwell rolling after width consistent with middle part width, so that it is determined that roll when roll gap on pressure amount, Then carry out single-ended roll gap again and tilt broadening rolling pass.
7. the milling method of cut deal according to claim 6 is it is characterised in that described step (3) In, in the first passage, first roll gap pressure is carried out to the wherein one end of blank, carry out single-ended roll gap and tilt broadening Rolling, the other end does not contact roll with middle part, is in Light Condition, in lower a time, changes the other end Carry out single-ended roll gap and tilt broadening rolling, such cross-circulation rolling, until the width at both ends reaches rolling target Till width.
8. the milling method of cut deal according to claim 6 is it is characterised in that described cut deal blank end Portion need rolling thickness be:
H=H1-H2
H2=B1×H1/B2
Wherein, H needs the reduction in thickness of rolling for cut deal blank end;
B1It is the width of end after broadening rolling;
H1It is the thickness of cut deal blank after broadening rolling;
H2It is rolled down to the thickness that rolling target width needs reach for end;
B2For rolling target width.
9. the milling method of cut deal according to claim 8 is it is characterised in that according to described H-number, In the case of guaranteeing that idle end and middle part are not pressed onto by roll, determine pressure amount on roll gap.
10. the milling method of cut deal according to claim 9 is it is characterised in that press on described roll gap Measuring value is:H+ (1~6) mm.
CN201510530188.5A 2015-08-26 2015-08-26 A kind of milling method of cut deal Pending CN106475412A (en)

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CN108672515A (en) * 2018-05-14 2018-10-19 东北大学 A kind of milling method of the high manganese cut deal of LNG storage tank
CN111589859A (en) * 2020-04-21 2020-08-28 洛阳双瑞精铸钛业有限公司 Rolling production method of pure titanium plate

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CN108672515B (en) * 2018-05-14 2019-12-24 东北大学 Rolling method of high-manganese medium plate for LNG storage tank
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