CN1396011A - Surface treating method and apparatus for hot-rolled steel band - Google Patents
Surface treating method and apparatus for hot-rolled steel band Download PDFInfo
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- CN1396011A CN1396011A CN 02137851 CN02137851A CN1396011A CN 1396011 A CN1396011 A CN 1396011A CN 02137851 CN02137851 CN 02137851 CN 02137851 A CN02137851 A CN 02137851A CN 1396011 A CN1396011 A CN 1396011A
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Abstract
A method for treating the surface of hot-rolled steel band to remove the oxide scales includes such steps as loosening-stripping, flatening, removing oxide scales and tension stretching, and entering again the front of cold-rolling mill. Its apparatus is composed of loosening unit, flatening unit, disk-shaped steel wire brush and stretching unit. Its advantages are simple and compact structure, small size, low cost and high quality of cold-rolled steel.
Description
Technical field:
The present invention relates to the processing method and the isolated plant thereof on a kind of hot-strip surface, be used to remove the hot-strip scale on surface, belong to the belt steel surface processing technology field.
Technical background:
Cold-strip steel is widely used in automobile making, packaging for foodstuff, household electrical appliance, communications and transportation, agricultural machinery, and all trades and professions such as civilian hardware, light industry, instrument, communication war industry are very important general steel.Along with expanding economy, increasing to the demand of cold-strip steel, according to incompletely statistics, in recent years, the annual required cold-strip steel of China was about 500-550 was ten thousand tons.
The used blank of cold-strip steel is a hot-strip, hot-strip surface coverage one deck iron scale (being commonly called as squama), and its amount can reach 35-55g/m
2, thickness is 7.5-15um.Be to guarantee the end product quality of cold-strip steel, reduce consuming, reduce roll wear and help next step processing (as plating, spraying etc.), must remove this layer iron scale before cold rolling.Before the present invention made, removing the hot-strip scale on surface mainly was to adopt following two kinds of methods: acid wash; Acid wash is a kind of common methods that domestic and international common employing at present removes removing iron scale, and this kind method is to make band steel its surperficial iron scale and sour chemically reactive and electrochemical action in acid solution, thereby reaches the purpose of removing iron scale.Though this method scale removal effect is better, also has disadvantage.The one, to grasp improper meeting because of time, temperature, acid solutions in the acid cleaning process and make the band steel produce hydrogen embrittlement, overpickling is owed defectives such as pickling, the mechanical performance and the surface quality of influence band steel.The 2nd, in acid cleaning process, can produce acid mist and waste acid water, produce acid mist and waste acid water meeting heavy corrosion factory building, plant equipment, the body of invading the people is detrimental to health, and destroys surrounding environment.The 3rd, it is long that pickling lines generally must 40-50 rice, and it is big to take the factory building place, and handle acid mist and waste acid water and also need go up a whole set of environmental protection treatment equipment, expense costliness not only, and treatedly uncertainly can reach discharge standard.2, mechanical descaling method: the mechanical descaling method be to band steel alternating bending, rolling, grind, scrub, shot-peening removes a kind of method of removing iron scale.General both at home and abroad at present employing water under high pressure or pressure-air beat at belt steel surface shot or the quartz sand of 100-150um to remove iron scale.Though this kind method need not be sour, do not have pollution problem, its weak point equipment investment expense height need be provided with production line separately in addition, and it is big to take the factory building place.
Technology contents:
The objective of the invention is to overcome above-mentioned weak point, thereby provide a kind of manufacturing process simple, cost is low, and is pollution-free, to environment, and body harmless's the hot-strip surface treatment method that the iron scale of belt steel surface thoroughly can be removed.
Another object of the present invention provides a kind of simple, compact and reasonable for structure, and volume is little, and it is little to take factory building, the process equipment that the production cost of cold-strip steel is reduced significantly, scale removal effect is good.
Main solution of the present invention is achieved in that
Hot-strip surface treatment method of the present invention mainly adopts following processing step:
1, the band steel enters the loose part of iron scale, makes the flexural deformation of band steel by depress roller and carrying roller, destroys the physical arrangement of iron scale, reaches the loose and part of iron scale is come off from the band steel matrix; The adjustment of depress roller is apart from S
1: 30≤S
1≤ 320mm;
2, after the flexural deformation of band steel, air spots, by depress roller and carrying roller, band steel leveling, the adjustment of depress roller is apart from S
2: 30≤S
2≤ 60mm;
3, band is after steel branches away from evener, and its length direction can not be consistent with the horizontal center line position, by a depress roller and two fixedly carrying roller that the band steel is produced is tension-stretched, make its maintenance consistent with horizontal center line.The adjustment of lower compression roller is apart from S
3:≤30S
3≤ 100mm;
4, by the running of last lower plane wire brush dish, the iron scale of belt steel surface is removed, when cleaning with water, water quench, hydraulic pressure: P 〉=3kg/cm
2, the adjustment of brush dish distance is S respectively up and down
4: 30≤S
4≤ 100mm;
5, enter the preceding belt steel surface iron scale of cold-rolling mill and be removed, belt steel surface is light.
The isolated plant of the invention process hot-strip surface treatment method:
It mainly adopts support plate 2 to be installed on the base 20, loose peeling apparatus, belted steel level device are installed on the support plate 2, column 13 is installed on the base 20, relative in groups wire brush dish device is housed respectively between two root posts 13, tensioner is installed on the base 20, on support plate 2 front ends and column 3 guide device 1 is housed respectively.
Description of drawings:
Fig. 1 is a process chart of the present invention:
Fig. 2 is a process schematic representation of the present invention;
Fig. 3 is an isolated plant structural representation of the present invention;
Fig. 4 is that A of the present invention is to the guide device schematic diagram;
Fig. 5 is that B of the present invention is to wire brush dish device schematic diagram;
Fig. 6 is that C of the present invention is to the tensioner schematic diagram;
Fig. 7 is brush dish structure chart in the brush dish device of the present invention;
The specific embodiment:
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
It mainly adopts following five processing steps the processing method on hot-strip of the present invention surface: its concrete operation method is as follows.
1, the band steel enters.Band steel specification: width b≤500mm, thickness δ≤4.0mm
Steel grade: straight carbon steel, ordinary low-alloy steel, carbon constructional quality steel.
2, enter loose rind part.By two depress rollers and three fixedly carrying roller make the flexural deformation of band steel, destroy the physical arrangement of iron scale, reach and make the purpose that iron scale is loose and part comes off from the belt steel surface matrix.
The adjustment coverage S of depress roller
1: 30≤S
1≤ 320mm;
3, enter the belt steel flating part.After the flexural deformation of band steel, air spots.By four depress rollers and five fixedly carrying roller band steel leveling.For cleaning with water of plane wire brush dish creates conditions.
The adjustment coverage S of depress roller
2: 30≤S
2≤ 60mm;
4, carry out strip tension tension, the band steel is after smooth come out, and its length direction can not be consistent with horizontal center line, by a depress roller and two fixedly carrying roller that the band steel is produced is tension-stretched, make its maintenance consistent with horizontal center line.
The adjustment coverage S of depress roller
3:≤30S
3≤ 100mm;
5, entering iron scale scrubs.By running up of last lower plane wire brush dish the iron scale of belt steel surface is removed, required water quench when cleaning with water, hydraulic pressure requires P 〉=3kg/cm
2, the adjustment of brush dish is apart from S up and down
4: 30≤S
4≤ 100mm;
6, the band steel enters milling train.Enter that the belt steel surface iron scale of cold-rolling mill before rolling is removed and the surface is bright state.
Isolated plant embodiment of the present invention is as follows:
Base 20 of the present invention is contained on the concrete pedestal.On the front end of support plate 2 and column 13, guide device 1 is housed respectively.Support plate 2 is installed on the base 20, and loose device and belted steel level device are installed in respectively on two support plates 2.Loose peeling apparatus mainly comprises loose bearing block 3, loose carrying roller 4, the loose depress roller 5 depressed, and loose pressure roller is regulated bolt 6, regulated bolt guide wheel 7.Loose depressing in the skewed slot that bearing block 3 is installed in support plate 2,3 fixing loose carrying rollers 4 are installed on two support plates 2 and adopt bearing fixing, two loose rods 5 of depressing are installed in the loose depress roller bearing block 3, regulate bolt 6 and be installed on the loose depress roller bearing block 3, regulate bolt guide wheel 7 and be installed on the adjusting bolt 6.
Belted steel level device mainly comprises smooth depress roller bearing block 8, smooth lower roll 9, smooth depress roller 10, smooth depress roller adjusting bolt 11, regulates bolt handwheel 12.Adopt five smooth lower rolls 9 to be installed in respectively on two support plates 2, adopt bearing fixing, 4 smooth pressure rollers 10 are installed in respectively in the smooth depress roller bearing block 8, smooth depress roller is regulated bolt 11 and is installed on the smooth depress roller bearing block 8, regulates bolt handwheel 12 and is installed on the smooth depress roller adjusting bolt 11.
Relative in groups wire brush dish device is housed respectively between per two root posts.Brush dish device is decided as required.Brush dish device comprises motor bedplate 14,14 ', motor 15,15 ', wire brush dish 19,19 ', and motor is regulated bolt 16,16 ' and handwheel 17,17 '.Motor bedplate 14,14 ' is installed in respectively in two root posts 13, on the motor 15 ' be installed in motor bedplate 14 ', motor 15 ' is installed on the motor bedplate 14 ', motor is regulated on the bolt 16,16 ' be installed in respectively electric baseboard 14 and electric baseboard 14 ', on the handwheel 17,17 ' be installed in respectively motor regulate bolt 16,16 '.On middle two root posts 13 carrying roller 18 is housed respectively, column 13 is connected with connecting plate 35.In the wire brush dish device of the present invention brush dish 19 mainly by the brush dish 27, brush disk chassis 28, steel wire plate 29, steel wire 30 formed.The brush dish is contained in 27 welding on the brush disk chassis 28, and steel wire plate 29 is fixing with brush disk chassis 28, and several steel wires 30 are installed on the steel wire plate 29.
Tensioner is installed on the base 20, tensioner comprises that mainly tension force carrying roller 21, tension force depresses bearing block 22, tension force depress roller 23, regulates bolt 24, handwheel 25, two blocks of tension force supporting station plates 26, tension force carrying roller 21 is installed on the plate 26 of tension force supporting station, by bearing fixing, tension force depress roller 23 is installed in the tension force depress roller bearing block 22, bearing block 22 is installed in the straight trough of tension force supporting station plate 26, regulating bolt 24 is installed on the tension force depress roller bearing block 22, handwheel 25 is installed in to be regulated on the bolt 24, and two tension force support plates are installed on the descaling mill base 20.
The operation principle of isolated plant of the present invention:
According to the hard and crisp characteristic of belt steel surface iron scale, apply external force for the band steel and occur bending and deformation, make iron scale loose even its part is come off from the matrix of band steel.Finish by three loose carrying rollers 4 and two loose depress rollers 5 that slide up and down in the loose device in these parts.Because steel has plasticity, it under external force, when surpassing the limit of its strain, external force will produce plastic deformation, utilize this characteristic of steel, to the band steel after obtaining loosening through diastrophic, scale on surface, and then, make its aligning smooth through distortion, for the steel wire on the brush dish and belt steel flating even contact create conditions.In this part be by five in the belted steel level device smooth carrying rollers 9 and 4 up and down adjustable smooth depress roller 10 finish.In order to increase action time to the belt steel surface iron scale, can make the more remarkable effect of removing iron scale, in the present invention, having adopted at a high speed, the plane wire brush dish of rotation carries out iron scale is cleaned.The tractive force that produces when simultaneously utilizing cold-rolling mill rolling again, make the band steel in descaling mill with the running campaign of milling train, descaling mill does not need to set up separately production line like this, can be supporting synchronous with the cold-rolling mill of different running speeds.
Compared with the prior art the present invention has the following advantages:
1, manufacturing process of the present invention is simple, can make the production cost decrease of cold-strip steel. As with Produce 20000 tons per year and be example, adopt acid wash, the hydrochloric acid of 1 year 20% concentration that consumes needs the 800-850 ton, Meter: ten thousand yuan of 28-30; Year consumes ten thousand yuan of steam 15-20; Year consumes ten thousand yuan of liquid caustic soda 12-14. These are three years old It is ten thousand yuan of 55-65 that the item expense just needs to increase cost. In addition also must charges for disposing pollutants, environmental protection equipment (acid mist, useless The sour water processing) expenses such as the water of equipment operation, electricity, manual maintenance maintenance are with plane wire brush disk device Only need to use water power, thereby greatly saved processing cost; 2, pollution-free, harmless to environment, human body etc. 3, simple, compact and reasonable for structure; 4, volume is little, and it is little to take the factory building place; 5, low cost of manufacture, Economical and practical, can thoroughly remove the iron scale (being commonly called as squama) on the hot-strip, solved in the metallurgy industry Knotty problem.
Claims (9)
1, the processing method and the isolated plant thereof on a kind of hot-strip surface is characterized in that:
(1), the band steel enters the loose part of iron scale, makes the flexural deformation of band steel by depress roller and carrying roller, destroys the physical arrangement of iron scale, reach the loose and part of iron scale is come off from the band steel matrix; The adjustment of depress roller is apart from S
1: 30≤S
1≤ 320mm;
(2), after the band steel flexural deformation, air spots, by depress roller and carrying roller, being with the steel leveling, the adjustment of depress roller is apart from S
2: 30≤S
2≤ 60mm;
(3), band is after steel branches away from evener, its length direction can not be consistent with the horizontal center line position, it is tension-stretched by depress roller and carrying roller the band steel to be produced, and makes its maintenance consistent with horizontal center line, the adjustment of depress roller is apart from S
3:≤30 S
3≤ 100mm;
(4), by the running of last lower plane wire brush dish, the iron scale of belt steel surface is removed, when cleaning with water, water quench, hydraulic pressure: P 〉=3kg/cm
2, the adjustment of brush dish is apart from S up and down
4: 30≤S
4≤ 100mm;
(5), the belt steel surface iron scale that enters before the cold-rolling mill is removed, belt steel surface is light.
2, a kind of isolated plant of implementing the method for claim 1, it is characterized in that adopting support plate (2) to be installed on the base (20), loose peeling apparatus, belted steel level device are installed on the support plate (2), base (20) is gone up column (13) is installed, relative in groups wire brush dish device is housed respectively between two root posts (13), tensioner is installed on the base (20), on support plate (2) front end and column (3) guide device (1) is housed respectively.
3, a kind of isolated plant of implementing the method for claim 1 or 2, it is characterized in that describedly being that described loose device mainly comprises loose bearing block (3), loose carrying roller (4), the loose axle (5) of depressing depressed, loose pressure roller is regulated bolt (6), is regulated bolt guide wheel (7), loose depress bearing block (3) and be installed in the groove of support plate (2), loose carrying roller (4) is installed on the support plate (2), the loose rod adjusting bolt (6) of depressing is installed in the loose depress roller bearing block (3), regulates bolt guide wheel (7) and is installed on the adjusting bolt (6).
4, a kind of isolated plant of implementing the method for claim 1 or 2, it is characterized in that described belted steel level device mainly comprises smooth depress roller bearing block (8), smooth roller lower roll (9), smooth depress roller (10), smooth depress roller is regulated bolt (11), regulate bolt handwheel (12), adopt smooth pressure roller (9) to be installed on the support plate (2), smooth pressure roller (10) is installed in respectively in the smooth depress roller bearing block (8), smooth depress roller is regulated bolt (11) and is installed on the smooth depress roller bearing block (8), regulates bolt handwheel (12) and is installed on the smooth depress roller adjusting bolt (11).
5, a kind of isolated plant of implementing the method for claim 1 or 2, it is characterized in that described brush dish device comprises motor bedplate (14), (14 '), motor (15), (15 '), wire brush dish (19) (19 '), motor is regulated bolt (16), (16 ') and handwheel (17), (17 '), motor bedplate (14), (14 ') is installed in respectively between two root posts (13), (15 ') are installed on the motor bedplate (14) motor, motor (15 ') is installed in motor bedplate (on 14 '), motor is regulated bolt (16), (16 ') are installed in respectively on electric baseboard (14) and the electric baseboard (14 '), handwheel (17), (17 ') are installed in motor respectively and regulate bolt (16), on (16 ').
6, a kind of isolated plant of implementing the method for claim 1 or 2 or 5 is characterized in that being equipped with on the described middle standing pillar (13) carrying roller (18), and column (13) connects connecting plate (35)
7, a kind of isolated plant of implementing the method for claim 1 or 2 or 5, it is characterized in that described wire brush dish device mainly adopts the brush dish that (27), brush disk chassis (28), steel wire plate (29), steel wire (30) are formed, the brush dish is contained in (27) on the brush disk chassis (28), steel wire plate (29) is fixing with brush disk chassis (28), and steel wire (30) is installed on the steel wire plate (29).
8, a kind of isolated plant of implementing the method for claim 1 or 2, it is characterized in that described tensioner mainly comprises tension force carrying roller (21), tension force is depressed bearing block (22), tension force depress roller (23), regulate bolt (24), handwheel (25), tension force supporting station plate (26), tension force carrying roller (21) is installed on the tension force supporting station plate (26), tension force depress roller (23) is installed in the tension force depress roller bearing block (22), bearing block (22) is installed in the groove of tension force supporting station plate (26), regulate bolt (24) and be installed on the tension force depress roller bearing block (22), handwheel (25) is installed in to be regulated on the bolt (24).
9, a kind of isolated plant of implementing the method for claim 1 or 2, it is characterized in that described guide device mainly regulates a bolt (31), guide wheel carriage (32), guide wheel (33), chute (34) and formed by leading the position, leading position adjusting bolt (31) is connected with guide wheel carriage (32), guide wheel carriage (32) is connected with guide wheel (33), and guide wheel (33) is stuck in the guide wheel chute (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02137851 CN1225322C (en) | 2002-06-25 | 2002-06-25 | Surface treating method and apparatus for hot-rolled steel band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02137851 CN1225322C (en) | 2002-06-25 | 2002-06-25 | Surface treating method and apparatus for hot-rolled steel band |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1396011A true CN1396011A (en) | 2003-02-12 |
| CN1225322C CN1225322C (en) | 2005-11-02 |
Family
ID=4749145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02137851 Expired - Fee Related CN1225322C (en) | 2002-06-25 | 2002-06-25 | Surface treating method and apparatus for hot-rolled steel band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1225322C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455370C (en) * | 2006-11-15 | 2009-01-28 | 武汉钢铁(集团)公司 | Leveling machine, black strip acid-free derusting device using the same and method thereof |
| CN101704026B (en) * | 2009-12-03 | 2011-07-20 | 南京钢铁股份有限公司 | Method for controlling pitting on surface of medium steel plate |
| CN102191532A (en) * | 2011-06-27 | 2011-09-21 | 威海银兴预应力线材有限公司 | Pickling-free production method capable of phosphorizing steel strand on line |
| CN104070438A (en) * | 2014-05-14 | 2014-10-01 | 德州博旺五金工具制品有限公司 | Pickling-free environmentally-friendly type iron wire machine |
| CN104815857A (en) * | 2015-05-22 | 2015-08-05 | 桂源 | Strip steel surface acid-free descaling complete device and descaling method thereof |
-
2002
- 2002-06-25 CN CN 02137851 patent/CN1225322C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455370C (en) * | 2006-11-15 | 2009-01-28 | 武汉钢铁(集团)公司 | Leveling machine, black strip acid-free derusting device using the same and method thereof |
| CN101704026B (en) * | 2009-12-03 | 2011-07-20 | 南京钢铁股份有限公司 | Method for controlling pitting on surface of medium steel plate |
| CN102191532A (en) * | 2011-06-27 | 2011-09-21 | 威海银兴预应力线材有限公司 | Pickling-free production method capable of phosphorizing steel strand on line |
| CN104070438A (en) * | 2014-05-14 | 2014-10-01 | 德州博旺五金工具制品有限公司 | Pickling-free environmentally-friendly type iron wire machine |
| CN104815857A (en) * | 2015-05-22 | 2015-08-05 | 桂源 | Strip steel surface acid-free descaling complete device and descaling method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1225322C (en) | 2005-11-02 |
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Granted publication date: 20051102 |