CN103706637A - Novel cold rolling short-process technology and units of novel cold rolling short-process technology - Google Patents
Novel cold rolling short-process technology and units of novel cold rolling short-process technology Download PDFInfo
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- CN103706637A CN103706637A CN201310752304.9A CN201310752304A CN103706637A CN 103706637 A CN103706637 A CN 103706637A CN 201310752304 A CN201310752304 A CN 201310752304A CN 103706637 A CN103706637 A CN 103706637A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005097 cold rolling Methods 0.000 title claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 51
- 238000003466 welding Methods 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000003801 milling Methods 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 8
- 230000002950 deficient Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 3
- ABLZXFCXXLZCGV-UHFFFAOYSA-N phosphorous acid Chemical compound 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OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 abstract 4
- 238000010008 shearing Methods 0.000 abstract 3
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Abstract
The invention discloses a novel cold rolling short-process technology which includes the following working procedures: uncoiling a steel coil with an uncoiler, carrying out straightening processing on the head and the tail of the steel coil with a straightening machine, shearing off disqualified portions of the strip with a pair of hydraulic shears, welding the head after shearing and the tail after shearing with a welding machine, enabling the strip to enter an acid-free phosphorous removal unit through an entry looper, enabling the strip after phosphorous removal to enter a continuous rolling unit through rolling mill inlet tension rollers to be continuously rolled, and enabling the strip to sequentially pass through a cleaning and drying unit and rolling mill outlet tension rollers to enter an auslaufspeicher after the strip is rolled out from the continuous rolling unit. According to the novel cold continuous rolling technology, due to the fact that the acid-free phosphorous removal technology is adopted for hot rolled raw material strip phosphorous removal, a powerful high-pressure rolling mill such as an eighteen-roller rolling mill is adopted for rolling the strip, and the rolling amount which is completed in a continuously-rolled mode through 4-6 racks of a common four-roller or six-roller rolling mill in a rolling process can be achieved through 2-3 racks. The novel cold rolling short-process technology is small in occupied area, small in investment, environmentally friendly and free of pollution, and saves energy.
Description
Technical field
The invention belongs to band steel continuous cold rolling production technology.Can pass through shorter technological process, equipment still less forms to produce cold-strip.
Background technology
Associating unit is rolled in traditional acid, and its pickling section adopts hydrochloric acid shallow slot turbulent flow pickling technology, and milling train section, owing to being subject to the restriction of each frame ability, for meeting a needed drafts of rolling process, adopts 4 to 6 frame tandem forms conventionally.
Pickling dephosphorization technique is a kind of chemical dephosphorization technology, and this method is by band, in descaling bath, to carry out the method that chemical reaction is removed strip surface oxide skin.In order to guarantee the enough reaction time, often band will pass through a plurality of descaling baths, from descaling bath band out, also will carry out the technical process such as rinsing, oven dry, and band passes through 4-6 frame continuous rolling after entering milling train again.The technological process of whole sour milling train group is longer, and unit floor space is wide.Owing to adopting acid medium to carry out dephosphorization, environmental pollution is larger simultaneously.
Steel surface anacidity dephosphorization technique adopts mechanical system to remove the iron scale on coiled sheet surface, and without the required ground space of existing pickling unit, also without using acid harmful chemical.It is mainly that upper and lower surface by hot-rolled sheet coil is sprayed dephosphorization medium, i.e. the mixture slurry of liquid and particle, thus remove the iron scale of strip surface.
Summary of the invention
For protection of the environment, and with shorter technological process, equipment still less forms to produce cold-strip, and the present invention proposes following technical scheme: a kind of Novel cold rolling abbreviated system, comprises following operation: with uncoiler to coil of strip uncoiling.With straightener to coil of strip, carry out end to end straightening processing.With hydraulic shear, cut off defective band.What with welding machine, band is sheared welds end to end.Band, through entry loop, enters anacidity dephosphorization unit.Band after dephosphorization enters tandem rolling unit continuous rolling by inlet of rolling mill jockey pulley.Band enters outlet looping by cleaning, drying unit and milling train outlet jockey pulley successively from tandem rolling unit shuts out.Band is cut and is cut by outlet again out from outlet looping, and outlet jockey pulley, enters coiling machine.Coiling machine is strip coil rolling, and when coil diameter reaches required when big or small, band is cut it cutting the place of cutting.A kind of Novel cold rolling abbreviated system unit, comprise the following equipment being linked in sequence: uncoiler, straightener, hydraulic shear, welding machine, entry loop, tandem rolling unit, outlet looping,, cut cut, coiling machine, be characterized in: between entry loop and tandem rolling unit, be linked in sequence and add dephosphorization unit and inlet of rolling mill jockey pulley, between tandem rolling unit and outlet looping, be linked in sequence and add cleaning, drying unit and outlet jockey pulley.Dephosphorization equipment used is anacidity dephosphorization unit.Described tandem rolling unit is 18 roller tandem rolling units.
This Novel cold continuous rolling process, because the dephosphorization of hot rolling raw material strip adopts above-mentioned anacidity dephosphorization technique, the rolling of band adopts brute force to depress greatly milling train, such as eighteen-high mill, make a rolling process adopt normal four-roller or six-high cluster mill to need 4 to 6 drafts that frame continuous rolling completes, by 2 to 3 frames, completed.This novel continuous rolling process floor space is little, invests little, environment friendly and pollution-free.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of Novel cold rolling abbreviated system of the present invention
In figure: 1, uncoiler, 2, straightener, 3, hydraulic shear, 4, welding machine, 5, entry loop, 6, anacidity dephosphorization unit, 7, inlet of rolling mill jockey pulley, 8,18 roller tandem rolling units, 9, cleaning, drying unit, 10, milling train outlet jockey pulley, 11, outlet looping, 12, outlet jockey pulley, 13, cut and cut, 14, coiling machine.
The specific embodiment
Steel surface anacidity dephosphorization technique adopts mechanical system to remove the iron scale on coiled sheet surface, and without the required ground space of existing pickling unit, also without using acid harmful chemical.It is mainly that upper and lower surface by hot-rolled sheet coil is sprayed dephosphorization medium, i.e. the mixture slurry of liquid and particle, thus remove the iron scale of strip surface.
Below in conjunction with accompanying drawing, the invention will be further described.
Hot rolling raw material coil of strip carries out uncoiling by uncoiler 1, band at straightener 2, carry out, after straightening processing, by hydraulic shear 3, cutting off defective band end to end, then by welding machine 4, band is welded end to end, to realize continuous production.Band after welding enters anacidity dephosphorization unit 6 after by entry loop 5.Band after dephosphorization enters 18 roller tandem rolling unit 8 continuous rollings through 2 to 3 frames by inlet of rolling mill jockey pulley 7, is rolled into the cold-strip of desired thickness.In order to ensure the ability of depressing of tandem rolling unit 8 and avoid the roller system problem of skidding, the front and back of tandem rolling unit 8 are respectively equipped with 10 two jockey pulley groups of inlet of rolling mill jockey pulley 7 and milling train outlet jockey pulley to guarantee the hightension of tandem rolling unit entrance and outlet.Because band exit surface has emulsion residue, for fear of milling train outlet jockey pulley 10, skid simultaneously, between tandem rolling unit 8 and outlet looping 11, also add cleaning, drying unit 9.Band enters outlet looping 11 by cleaning, drying unit 9, milling train outlet jockey pulley 10 from tandem rolling unit 8 out successively.Band from outlet looping 11 out again by outlet jockey pulley 12, outlet is cut and is cut 13, enters coiling machine 14.Coiling machine 14 is strip coil rolling, and when coil diameter reaches required when big or small, band is cut 13 places to cutting cutting.Band after cutting unloads coiling machine by coil stripping car.
The above; it is only the preferably specific embodiment of the present invention; but protection scope of the present invention is not limited to this; those skilled in the art is within the scope of method disclosed by the invention, and the method according to this invention scheme and design of the present invention thereof are equal within replacement all should be encompassed in protection scope of the present invention.
Claims (4)
1. a Novel cold rolling abbreviated system, comprises following operation:
1., use uncoiler (1) to coil of strip uncoiling;
2., with straightener (2) coil of strip carried out to straightening processing end to end;
3., with hydraulic shear (3), cut off defective band;
4., with welding machine (4), band is welded end to end;
5., band is through entry loop (5), enters anacidity dephosphorization unit (6);
6., the band after dephosphorization enters tandem rolling unit (8) continuous rolling by inlet of rolling mill jockey pulley (7);
7., band enters outlet looping (11) by cleaning, drying unit (9) and milling train outlet jockey pulley (10) successively from tandem rolling unit (8) rolling;
8., band from outlet looping (11) out again by outlet jockey pulley (12), outlet is cut and is cut (13), enters coiling machine (14); Coiling machine (14) is strip coil rolling, and when coil diameter reaches required when big or small, band is cut (13) and located cutting cutting.
2. a unit of realizing Novel cold rolling abbreviated system described in claim 1, comprise the following equipment being linked in sequence: uncoiler (1), straightener (2), hydraulic shear (3), welding machine (4), entry loop (5), tandem rolling unit (8), outlet looping (11), outlet jockey pulley (12), cut and cut (13), coiling machine (14), it is characterized in that: the dephosphorization unit (6) and inlet of rolling mill jockey pulley (7) that between entry loop (5) and tandem rolling unit (8), are linked in sequence and add, between tandem rolling unit (8) and outlet looping (11), be linked in sequence and add cleaning, drying unit (9) and outlet jockey pulley (10).
3. the short flow process unit of Novel cold rolling according to claim 2, is characterized in that: described dephosphorization equipment (6) is anacidity dephosphorization unit.
4. according to the short flow process unit of the Novel cold rolling described in claim 2 or 3, it is characterized in that: described tandem mill (8) is 18 roller tandem rolling units.
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| CN106244967B (en) * | 2016-07-29 | 2018-12-07 | 黄冈三德板业有限公司 | Cold-rolling of steel plate coating integration produces unit and its production technology |
| CN111182978A (en) * | 2017-10-06 | 2020-05-19 | Sms集团有限公司 | Multipurpose rolling equipment |
| CN109702019A (en) * | 2018-12-21 | 2019-05-03 | 首钢京唐钢铁联合有限责任公司 | A method of prevent high-strength steel cold roll uncoiling difficult |
| CN110052498A (en) * | 2019-04-25 | 2019-07-26 | 首钢集团有限公司 | A kind of method and device judging planisher jockey pulley skidding position and time |
| CN112122340A (en) * | 2020-07-23 | 2020-12-25 | 洛阳双瑞精铸钛业有限公司 | Process method for improving material yield of cold-rolled titanium strip coil |
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