CN101007315B - Non-groove rolling technology of horizontal mill - Google Patents

Non-groove rolling technology of horizontal mill Download PDF

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Publication number
CN101007315B
CN101007315B CN2007100342916A CN200710034291A CN101007315B CN 101007315 B CN101007315 B CN 101007315B CN 2007100342916 A CN2007100342916 A CN 2007100342916A CN 200710034291 A CN200710034291 A CN 200710034291A CN 101007315 B CN101007315 B CN 101007315B
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CN
China
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rolling
mill
milling train
roll
flying shear
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CN2007100342916A
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Chinese (zh)
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CN101007315A (en
Inventor
李德良
廖志
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湖南华菱涟源钢铁有限公司
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Publication of CN101007315A publication Critical patent/CN101007315A/en
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Publication of CN101007315B publication Critical patent/CN101007315B/en

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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

Non-groove rolling technology of horizontal mill

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 is furnished with 17 full horizontal mills, 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 and middle milling train group and mm finishing mill unit, are duo mill, the complete horizontally disposed form of lap siding.The 3rd flying shear that second flying shear, first kink, mm finishing mill unit, second kink and the 3rd kink that first flying shear, middle milling train group, the cutting head cutting tail accident of using for junior middle school's milling train, crop behind blooming mill used and the 4th kink, multiple length are used.Wherein do not use plain-barreled roll on second in first of blooming mill, junior middle school's milling train, middle milling train group and second and the 4th and the 6th, the mm finishing mill unit and the 4th and the 5th and the 6th and the 7th and the 8th 's the rolling-mill housing, use plain-barreled roll and have only on the 3rd of middle milling train group and the 5th and mm finishing mill unit first and 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 8th road master's current of electric uses 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, first flying shear 3 and second flying shear 5 and the 3rd flying shear 11, middle milling train group 4, first kink 6 and second kink 8 and the 3rd kink 9 and the 4th kink 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.First flying shear 3 is the crop flying shear, and second flying shear 5 is for handling cutting head cutting tail accident flying shear, and the 3rd flying shear 11 is multiple length (scale) flying shear, and first kink 6 is 5 #Kink, second kink 8 is 4 #Kink, the 3rd kink 9 is 3 #Kink, the 4th 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 first flying shear 3 be installed, middle milling train group 4 is installed in the postorder of first flying shear 3, and second flying shear, 5 positions are connected with first kink 6 in the rear end of middle milling train group 4 behind second flying shear 5.After mm finishing mill unit 7 is installed in first kink 6, the 3rd flying shear 11 is housed at the end of mm finishing mill unit 7.On the 3rd of middle milling train group 4 and the 5th rolling mill frame, first plain-barreled roll 41 and second plain-barreled roll 42 are housed, on first of mm finishing mill unit 7 and the 3rd rolling mill frame, the 3rd plain-barreled roll 71 and Siping City's rod 72 is housed, and what install on second, four, five, six, seven, eight rolling mill frames of the rolling-mill housing of junior middle school's milling train 2, middle milling train group 4 first and second and the 4th and the 6th rolling mill frame and finishing mill unit 7 is grooved roll, does not use plain-barreled 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 11And K 7And 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 10And K 8And K 6And K 4Be in 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 first road to the, six 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 first flying shears come out from junior middle school's milling train 2 and roll the material crop, be that rolling condition is created in next procedure, milling train group 4 during the blank behind first 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 first plain-barreled roll 41 is housed after coming out 10), the 3rd rolling mill of middle milling train assembling is a flat roll mill, blank width that flat roll mill is rolling or height can calculate by mode.The blank that comes out from flat roll mill through reverse guide and guard finish 90 ° enter after reversing the 4th rolling mill of milling train group 4 (pass is K 9, the water chestnut square opening) and reenter the 5th rolling mill of the middle milling train group 4 that second plain-barreled roll 42 is housed, the 5th rolling mill of middle milling train group 4 is that (pass is K to flat roll mill 8), the blank that shuts out through reverse guide and guard finish 90 ° go into after reversing in the 6th rolling mill of milling train group 4 (pass is K 7, omnipotent hole), the omnipotent hole material that is rolled out by the 6th rolling mill of middle milling train group 4 is gone into first rolling mill that the 3rd plain-barreled roll 71 is housed of mm finishing mill unit 7 by first kink 6 behind second flying shear, 5 cutting head cutting tails (pass is K 6), first rolling mill of mm finishing mill unit is a flat roll mill, the rolled piece that this flat roll mill rolls out is finished 90 ° of second rolling mills of going into mm finishing mill unit 7 after reversing (the groove milling train is arranged, and pass is K through reversing guide and guard 5, omnipotent pass) roll into the square material of plum blossom or rectangle material and enter the 3rd rolling mill that Siping City's roller 72 is housed of mm finishing mill unit 7 through second kink 8 (pass is K 4), the 3rd rolling mill of mm finishing mill unit 7 is a flat roll mill, the pre-cutting material that is rolled into by it passes the 6th milling train that enters mm finishing mill unit 7 behind two built on stilts rolling mills and the 3rd kink 9, and (pass is K 3) be cut into a plurality of flat ellipse hole shape material and enter the 4th kink 10 respectively, (pass is K to import the 7th rolling mill of mm finishing mill unit 7 by the 4th kink 10 2) roll into flat ellipse hole shape material and finish 90 ° of the 8th rolling mills that enter mm finishing mill unit 7 after reversing (pass is K through reversing guide and guard 1) be rolled into the finished product material of required specification, shear the finishing warehouse-in through the 3rd flying shear 11 multiple lengths (scale).

Embodiment 2

One-strand roller technology as shown in Figure 4

(pass is K from the 3rd rolling mill of mm finishing mill unit 7 4) milling train distribution situation before is identical 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 3rd rolling mill of mm finishing mill unit 7 4) be flat roll mill, the plain-barreled roll material that is rolled out by it is finished 90 ° of the 4th rolling mill (pass K that enter mm finishing mill unit 7 after reversing through reversing guide and guard 3) roll into circle hole shape material or omnipotent hole shape material, (pass is K to enter the 5th rolling mill of mm finishing mill unit 7 through the 3rd kink 9 2) roll into flat ellipse hole shape material, finish 90 ° of the 6th rolling mills that enter mm finishing mill unit 7 after reversing (pass is K by reversing guide and guard 1) roll into finished product, cross two built on stilts rolling mills through the 4th kink 10, go up the cold bed finishing through the 3rd flying shear 11 double length shearings (scale), 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. non-groove rolling technology of horizontal mill, it includes blooming mill (1), junior middle school's milling train (2), middle milling train group (4), mm finishing mill unit (7), first flying shear (3) and second flying shear (5) and the 3rd flying shear (11), first kink (6) and second kink (8) and the 3rd kink (9) and the 4th kink (10), be furnished with junior middle school's milling train (2) behind the blooming mill (1), near junior middle school's milling train (2) first flying shear (3) is installed, middle milling train group (4) is installed in the postorder of first flying shear (3), second flying shear (5) position is in middle milling train group (4) rear end, be connected with first kink (6) behind second flying shear (5), after mm finishing mill unit (7) is installed in first kink (6); End in mm finishing mill unit (7) is equipped with the 3rd flying shear (11); Come and go through blooming mill (1) with 150 * 150 continuous casting square billets and to enter the tandem mill group after rolling three roads take off head, first flying shear (3) to the breaking down of coming out from junior middle school's milling train (2) and roll the material crop; It is characterized in that: on the 3rd of middle milling train group (4) and the 5th rolling mill frame, first plain-barreled roll (41) and second plain-barreled roll (42) are housed, on first of mm finishing mill unit (7) and the 3rd rolling mill frame, the 3rd plain-barreled roll (71) and Siping City's roller (72) are housed, constitute the rolling mill practice that four flat roll mills and grooved roll milling train are used alternatingly; Milling train group (4) during stock behind first flying shear (3) crop enters, blank enters the 3rd rolling mill of the middle milling train group (4) that first plain-barreled roll (41) is housed after therefrom second rolling mill of milling train group (4) comes out, the rolling stock that comes out through reverse guide and guard finish 90 ° go into after reversing in the 4th rolling mill of milling train group (4) reenter the 5th rolling mill of the middle milling train group (4) that second plain-barreled roll (42) is housed, the blank that shuts out through reverse guide and guard finish 90 ° go into after reversing in the 6th rolling mill of milling train group (4), the omnipotent hole shape material that rolls out is gone into first rolling mill that the 3rd plain-barreled roll (71) is housed of mm finishing mill unit (7) by first kink (6) behind second flying shear (5) cutting head cutting tail, the rolled piece that rolls out finishes through reversing guide and guard that 90 ° of second rolling mills of going into mm finishing mill unit (7) after reversing roll into the square material of plum blossom or the rectangle material enters the 3rd rolling mill that Siping City's roller (72) is housed of mm finishing mill unit (7) through second kink (8), rolls into pre-cutting material by it and passes the 6th of entering mm finishing mill unit (7) behind two built on stilts rolling mills and the 3rd kink (9) and roll and be cut into a plurality of flat ellipse hole shape material and enter the 7th rolling mill that the 4th kink (10) imports mm finishing mill unit (7) respectively and roll into flat ellipse hole shape material and finish 90 ° and enter finished product material that mm finishing mill unit (7) the 8th rolling mill is rolled into after reversing through the 3rd flying shear (11) double length shearing through reversing guide and guard; Perhaps the plain-barreled roll material that is rolled out by the 3rd rolling mill of mm finishing mill unit (7) is finished 90 ° of the 4th rolling mills that enter mm finishing mill unit (7) after reversing and is rolled into circle hole shape material or omnipotent hole shape material through reversing guide and guard, the 5th rolling mill that enters mm finishing mill unit (7) through the 3rd kink (9) rolls into flat ellipse hole shape material, finish 90 ° of the 6th rolling mills that enter mm finishing mill unit (7) after reversing and roll into finished product through reversing guide and guard, pass two built on stilts rolling mills through the 4th kink (10), by the 3rd flying shear (11) double length shearing.
CN2007100342916A 2007-01-18 2007-01-18 Non-groove rolling technology of horizontal mill CN101007315B (en)

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CN103191920A (en) * 2013-04-27 2013-07-10 乐清市长城金属线材有限公司 Continuous casting and rolling device and production process of copper strip busbar

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CN110170522B (en) * 2019-06-10 2020-12-01 成渝钒钛科技有限公司 Method for optimizing hole pattern of phi 14mm steel bar specification
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CN103191920B (en) * 2013-04-27 2015-02-18 乐清市长城金属线材有限公司 Continuous casting and rolling device and production process of copper strip busbar

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