CN101007315A - Non-groove rolling technology of horizontal mill - Google Patents
Non-groove rolling technology of horizontal mill Download PDFInfo
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- CN101007315A CN101007315A CN 200710034291 CN200710034291A CN101007315A CN 101007315 A CN101007315 A CN 101007315A CN 200710034291 CN200710034291 CN 200710034291 CN 200710034291 A CN200710034291 A CN 200710034291A CN 101007315 A CN101007315 A CN 101007315A
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Abstract
The invention discloses a slotless rolling art for all-horizontal rolling mill which rolls round bar and screw-thread steel on semi-continuous rolling process online. It arranges junior mill 2, crop flying shear 3, junior mills group 4, crop and crop end flying shear 5, loop 6 or 8 or 9 or 10, finishing mills group 7 and times ruler flying shear 11 after blooming mill 1 consecutively; installs plain-barreled roll 41 or 42 and 71 or 72 on the third or fifth rolling mill frames of junior mills group 4 and the first and third rolling mill frames of finishing mills group 7, the plain-barreled rolls need not be processed hole-type groove, the rolling pressure is decreased significantly. The plain-barreled rolling mills does not have wrong rollers in whole rolling process, does not generate ears, decreases central waste rollers, saves changing roller time, increases rolling mill efficiency. The plain-barreled roll slotless rolling art not only can be used in flat alternative continuous rolling process line, but has a bright prospect in development and application of all-horizontal rolling mill process line.
Description
Technical field
The present invention relates to a kind of rolling mill practice, relating in particular to a kind of is the non-groove rolling technology of horizontal mill that is used for milling round steel or screw-thread steel on the semi continuous steel rolling process line arranged of full horizontal at milling train.
Background technology
At milling train is exploitation, research or application more and more that adopt the grooveless rolling technology on the fully continuous type steel rolling process line arranged of horizontally and vertically alternative, reports to some extent as " blooming mill grooveless rolling technical study and production application " (" steel rolling " 1003-9996 (2004) 02-0001-03) and " spreading and using of flat rolling " (" steel rolling " 1006-5008 (2005) 04-2030-04); But be to adopt plain-barreled roll grooveless rolling technology to yet there are no report on the semi continuous steel rolling process arranged of full horizontal at milling train before the present invention.On the technology of milling train, be the rolling mill practice of grooved roll basically at present for horizontally disposed full semi continuous steel rolling.
Summary of the invention
The object of the present invention is to provide a kind of non-groove rolling technology of horizontal mill that can improve operating rate of rolling mill, simplify guide and guard making or installation or adjustment, minimizing roll consumption and rolling accident.
For achieving the above object, the technical solution used in the present invention is: non-groove rolling technology of horizontal mill of the present invention, be furnished with 17 full horizontal mills in the technology, and wherein first rolling mill is φ 530 * 1 blooming mills, three-high mill; All the other 16 rolling mills are junior middle school's milling train or middle milling train group or mm finishing mill unit, are duo mill, the complete horizontally disposed form of lap siding.Behind blooming mill for junior middle school's milling train, crop with flying shear, middle milling train group, cutting head cutting tail accident with flying shear and kink, mm finishing mill unit, kink, multiple length flying shear.Wherein do not use plain-barreled roll on the rolling-mill housing of second or four or five or six or seven or eight in preceding two and the 4th of blooming mill, junior middle school's milling train, middle milling train group and the 6th, the mm finishing mill unit, use plain-barreled roll and have only in the middle milling train group the 3rd or the 5th and the mm finishing mill unit first or the 3rd rolling mill frame, constitute the rolling mill practice that N (integers of N 〉=2) frame flat roll mill and grooved roll milling train are used alternatingly.
A kind of non-groove rolling technology of horizontal mill that adopts as above technical scheme to provide, compared with prior art, its beneficial effect is:
1. adopt grooveless rolling technology, having overcome former the 8th road (is K
10Rolling road) overcurrent warning phenomenon often appears in main motor, because plain-barreled roll does not have side pressure, has reduced motor load, draught pressure is than obviously reducing in the past, the mat woven of fine bamboo strips 8 road master's current of electric use electric current to reduce by 30 from original 950---1100 peaces drop to 510---, 770 peaces---and 46%;
2. in rolling mill practice, adopt plain-barreled roll (promptly not having grooved roller) rolling, do not exist be full of, earing or feed wrong hole problem, reduce rolling accident, roll uselessly in the middle of reducing, year comprehensive benefit is more than 100,000 yuan;
3. plain-barreled roll is no grooved roller, can save and change the time of rolling, every month can the fecund 1000---1500 tons of steel, improved operating rate of rolling mill, can create benefit 20 every year---250,000 yuan;
4. adopt plain-barreled roll grooveless rolling technology, the flat roll mill roll of same specification can be shared, and the utilization rate of roll improves 1.5---2.0 times, can reduce more than 40 ten thousand yuan of roll storage funds every year.
5. need not process the pass groove on the roll of flat roll mill, and interchangeable, annually produce 40 per year one---the Metallurgical Enterprise of 500,000 tons of steel can be saved Roller Machining and taken more than 60,000 yuan.
6. the milling train that use is had plain-barreled roll, breaker roll is not axially adjusted, and has simplified making, installation and the adjustment of guide and guard.
Description of drawings
Fig. 1 is the grooved roll milling train in a kind of non-groove rolling technology of horizontal mill of the present invention and the schematic diagram of flat roll mill alternate layout, also is Figure of abstract of the present invention.
Fig. 2 is the pass integral layout schematic diagram in a kind of non-groove rolling technology of horizontal mill of the present invention.
The corresponding relation schematic diagram of Fig. 3 roll that is a kind of non-groove rolling technology of horizontal mill of the present invention in multistrand rolling is produced and pass.
The corresponding relation schematic diagram of Fig. 4 roll that is a kind of non-groove rolling technology of horizontal mill of the present invention in one-strand roller is produced and pass.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Embodiment 1: multistrand rolling production technology as shown in Figure 3.
The multistrand rolling production technology of described non-groove rolling technology of horizontal mill comprises blooming mill 1, junior middle school's milling train 2, flying shear 3 or 5 or 11, middle milling train group 4, kink 6 or 8 or 9 or 10, smart hole unit 7.Wherein blooming mill 1 is a three-high mill, single chassis, and junior middle school's milling train 2 is two duo mills, in milling train group 4 be six duo mills, mm finishing mill unit 7 be eight duo mills (according to difference product advise some milling train can), be full horizontal mill, lap siding is arranged, constitutes the tandem rolling unit.Flying shear 3 is the crop flying shear, and flying shear 5 is for handling cutting head cutting tail accident flying shear, and flying shear 11 is multiple length (scale) flying shear, and kink 6 is 5
#Kink, kink 8 is 4
#Kink, kink 9 is 3
#Kink, kink 10 is 2
#Kink.Be furnished with junior middle school's milling train 2 behind the blooming mill 1, near junior middle school's milling train 2 flying shear 3 be installed, middle milling train group 4 is installed in the postorder of flying shear 3, and flying shear 5 positions are associated with kink 6 in the rear end of middle milling train group behind the flying shear 5.After mm finishing mill unit 7 is installed in kink 6, at the end dress flying shear 11 of mm finishing mill unit 7.On the 3rd of middle milling train group 4 or the 5th rolling mill frame, plain- barreled roll 41 or 42 are housed, on first of mm finishing mill unit 7 or the 3rd rolling mill frame, plain- barreled roll 71 or 72 are housed, and in the rolling-mill housing of junior middle school's milling train 2, in preceding two or the 4th of milling train group 4, second of six rolling mill frames and finishing mill unit 7, four, five, six, seven, what install on the eight rolling mill frames is grooved roll, pass on each roll constitutes the rolling mill practice that N (integers of N 〉=2) frame flat roll mill and grooved roll milling train are used alternatingly as shown in Figure 2 like this on the non-groove rolling technology of horizontal mill line.The 4th rolling mill of wherein middle milling train group 4 is that the reason of non-flat roll mill is that the supplied materials depth-width ratio only reaches about 0.41, need be in the empirical data of 0.7-0.8 much smaller than the depth-width ratio that interrelated data is introduced.Pass K as shown in Figure 2
11Or K
7Or K
5Be omnipotent hole, K
9Be water chestnut square opening, K
3Be circular port, K
2Be flat ellipse shape hole, K
1Be the finished product hole, and K
10Or K
8Or K
6Or K
4For plain-barreled roll (hole), from K
11To K
1Constitute the pass figure in the complete multistrand rolling technology of a cover, the roll corresponding relation of each pass and non-groove rolling technology of horizontal mill can embody from Fig. 3.
In multistrand rolling technology, all can adopt described non-groove rolling technology of horizontal mill when rolled threaded steel and round steel.After taking off head, blooming mill 1 round rolling three roads enter the tandem mill group with 150 * 150 continuous casting square billets, and identical from the 1st road to the 6 road rolling process with original rolling process, from the 7th procedure (second rolling mill of milling train group 4 promptly), i.e. K as shown in Figure 3
11Begin to be rolled.The breaking down that 3 pairs of flying shears come out from junior middle school's milling train 2 or roll the material crop, be that rolling condition is created in next procedure, milling train group 4 during the blank behind flying shear 3 crops enters, blank therefrom second rolling mill of milling train group 4 (pass is K
11, omnipotent hole) and (pass is K to enter the 3rd rolling mill of the middle milling train group 4 that plain-barreled roll 41 is housed after coming out
10, flat roll mill), base shape width that flat roll mill is rolling or height can calculate by mode.The blank that comes out from flat roll mill reverse 90 ° enter milling train group 4 the 4th rolling mill (pass is K
9, the water chestnut square opening) after reenter the 5th rolling mill of the middle milling train group 4 that plain-barreled roll 42 is housed, the 5th rolling mill of middle milling train group 4 is flat roll mill (pass is K8), the blank that shuts out reverse guide and guard finish go into after 90 ° in the 6th rolling mill of milling train group 4 (pass is K
7, omnipotent hole), (pass is K to the omnipotent hole material that flat roll mill rolls out after kink 6 is gone into first rolling mill that plain-barreled roll 71 is housed of mm finishing mill unit 7 through flying shear 5 cutting head cutting tails
6, flat roll mill), the rolled piece that this flat roll mill rolls out is finished 90 ° and is reversed second rolling mill into mm finishing mill unit 4 (the groove milling train is arranged, and pass is K through reversing guide and guard
5Omnipotent pass) rolling into the square or rectangle material of plum blossom enters the 3rd rolling mill that plain-barreled roll 72 is housed of mm finishing mill unit 7 through kink 8 (pass is K4, flat roll mill) rolling into pre-cutting material shape passes the 6th milling train (pass is K3) that enters mm finishing mill unit 7 behind the two built on stilts rolling mills and is cut into a plurality of flat ellipse hole shape material and enters kink 10 respectively, the 7th rolling mill (pass is K2) that imports mm finishing mill unit 7 rolls into flat ellipse hole shape material and finishes the finished product material that 90 ° of the 8th rolling mills (pass is K1) that enter mm finishing mill unit 7 after reversing are rolled into required specification through reversing guide and guard, shears the finishing warehouse-in through flying shear 11 multiple lengths (scale).
One-strand roller technology as shown in Figure 4
Identical from the 3rd rolling mill (pass is K4) the milling train distribution situation before of mm finishing mill unit 7 with the milling train distribution situation of multistrand rolling technology (accompanying drawing 3), the pass K as shown in Figure 2 of the 4th, the 5th, the 6th rolling mill of mm finishing mill unit 7
3, K
2, K
1
When one-strand roller, (pass is K to the 4th rolling mill of mm finishing mill unit 7
4) be flat roll mill, the plain-barreled roll material that rolls out is finished 90 ° through guide and guard and is reversed the 4th rolling mill (the pass K that enters mm finishing mill unit 7
3) roll into circular hole material shape or omnipotent hole material shape, (pass is K to enter the 5th rolling mill in the mm finishing mill unit 7 through kink 9
2) roll into flat ellipse hole shape material, (pass is K to finish 90 ° of the 6th rolling mills that enter mm finishing mill unit 7 after reversing by guide and guard
1) roll into finished product, cross two built on stilts rolling mills through kink 10, be cut into multiple length (scale) through flying shear 11 and go up the cold bed finishing, the processing warehouse-in.
No matter be that multi-thread production technology or single line production technology are produced screw-thread steel or round steel, from K
3-K
1All do not adopt plain-barreled roll grooveless rolling technology.
Claims (1)
1, a kind of non-groove rolling technology of horizontal mill that includes blooming mill (1), junior middle school's milling train (2), middle milling train group (4), mm finishing mill unit (7), flying shear (3,5,11), kink (6,8,9,10), be furnished with junior middle school's milling train (2) behind the blooming mill (1), near junior middle school's milling train (2) flying shear (3) is installed, middle milling train group (4) is installed in the postorder of flying shear (3), flying shear (5) position is in middle milling train group (4) rear end, be associated with kink (6) behind the flying shear (5), after mm finishing mill unit (7) is installed in kink (6); End dress flying shear (11) in mm finishing mill unit (7), it is characterized in that: the 3rd of middle milling train group (4) or the 5th rolling mill frame and on first of mm finishing mill unit (7) or the 3rd rolling mill frame plain-barreled roll (41,42,71,72) is installed, is constituted the rolling mill practice that N frame flat roll mill and grooved roll milling train are used alternatingly.
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| CN2007100342916A CN101007315B (en) | 2007-01-18 | 2007-01-18 | Non-groove rolling technology of horizontal mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100342916A CN101007315B (en) | 2007-01-18 | 2007-01-18 | Non-groove rolling technology of horizontal mill |
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| Publication Number | Publication Date |
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| CN101007315A true CN101007315A (en) | 2007-08-01 |
| CN101007315B CN101007315B (en) | 2010-10-06 |
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