CN101812697B - Method for raising threading steel of push-pull type pickling - Google Patents
Method for raising threading steel of push-pull type pickling Download PDFInfo
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- CN101812697B CN101812697B CN2010101363220A CN201010136322A CN101812697B CN 101812697 B CN101812697 B CN 101812697B CN 2010101363220 A CN2010101363220 A CN 2010101363220A CN 201010136322 A CN201010136322 A CN 201010136322A CN 101812697 B CN101812697 B CN 101812697B
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Abstract
The invention discloses a method for raising a threading steel of a push-pull type pickling, which comprises the following steps: (1) installing a threading steel coil on a uncoiler, pressing a press roll, and starting the uncoiler so that the front end of the threading steel extends forwards by 250 mm-350 mm; (2) warping by using a stretching hydraulic cylinder and an elevating hydraulic cylinder, wherein the front end of the band steel warps by 10-15%; (3) starting the uncoiler, so that the threading steel enters between pinch rolls of a leveler following a uncoiling guide plate; (4) the front end of the levelled threading steel warps by 3-5 degrees; (5) cutting the strip top at the front end of the threading steel; and(6) threading the threading steel between the squeeze rolls. The invention adds an independent warping procedure to the push-pull type pickling, and thus, can be free from the influences of threading steel thickness and incoming material factors; and after warping, the threading steel can smoothly thread through the leveller. The process from coil feeding to band threading only takes 4 minutes, thereby greatly enhancing the work efficiency and avoiding stacking, clogging, colliding and other accidents of the threading steel in the rinse tank.
Description
Technical field
The present invention relates to a kind of method of pickling unit threading steel, relate in particular to a kind of method that improves threading steel of push-pull type pickling.
Background technology
It is the first step that whole pickling is produced that band is worn in pickling, and the nose of band steel is the important step of wearing the band operation.The purpose of nose is in order to ensure " the band steel is worn band smoothly, improves the unit production operation efficiency and improves the equipment life cycle, reduces the band accident of wearing ".In crossing process in the past,, and affect whole production rhythm usually with the influence of steel nose quality.
Pickling Line of Cold Rolling Mill Plant is a shallow slot turbulent flow pull pickler group, and it is with the different of continuous pickling line maximum: the kind that continuous pickling line is suitable for is single, realizes welding between band steel and the band steel; And the pull pickler group adapts to the product of all size, and suitability is wide, but band will be worn in every production one winding steel capital, whenever wears and once is with the steel capital to want nose.When wearing band, the band steel by prewash tank, pickling tank and rinse tank, advances to the reeling machine direction under straightener and many propelling movements to squeezing roller.If when wearing band, the band steel is raise-free or nose is too high, and the band steel is easy to stab bad squeezing roller or knocks the interior granite of rinse tank, is difficult to pass through rinse tank.Seven pairs of squeezing rollers are generally arranged in the rinse tank, five sections granites, two about 100mm of granitic distance up and down, nose is too high or too low, and the band steel will inevitably stab the heap that causes the band steel on granite or stifled, makes and is with steel can't pass through rinse tank smoothly.Heap is in case take place or during stifled phenomenon in the band steel, often adopts the mode of rewinding pile or stifled band steel is poured out, yet rewinding will inevitably " be drawn the granite in the rinse tank to turn over ", has also increased the load of Abrollhaspel simultaneously, and production and equipment are caused unnecessary loss.Therefore, because the band steel is worn factors such as band nose poor quality, accidents such as the band steel is often piled in rinse tank, blocks up, bumps, hit, stamp, cause granite " to be drawn and turn over " damage, squeezing roller surface to be scratched, to burn out serious equipment breakdowns such as Abrollhaspel motor, cause technology accidents such as belt steel surface scuffing, scratch, nest limit simultaneously, had a strong impact on pickling production efficiency.
In the prior art, adopt straightener to reach the purpose of nose mostly, adjust depressing or lifting of straightener gangway repeatedly, adjust straightener roll gap height, the front end of band steel is upwarped, and the uncoiling guide plate has Telescopic, only the band steel is played guide effect.But there is following deficiency in this method: (band steel front end both sides are not straight one, to cause band steel fore-end " to curl or the distortion of limit portion " easily, high on one side low on one side), easily bump, hang phenomenon between the granite in rinse tank, cause the heap of band steel, stifled accident, and inefficiency; Two, since straightener to lift or press be that speed is slower by the transmission of driven by motor worm and gear, highly be difficult for grasping, need reciprocation cycle, till reaching qualified nose, therefore, inefficiency has also increased the load of Abrollhaspel motor simultaneously; Three, be subject to the influence of belt steel thickness, the nose quality is difficult to control, and that band steel front end is prone to is too high or too low, curl or phenomenon such as is turned round in the limit; Four, " aligning nose " process elapsed time is about 6～10 minutes, and produce coil of strip about one 17 tons, speed operation with 70m/min, average 16 minutes consuming time, whole coil of strip from " wearing band " to " batch and finish " about 22 minutes, wear the band nose and just account for about 1/2 of the whole volume production time, therefore, operating efficiency is low.
Summary of the invention
At weak point of the prior art, the invention provides a kind of realization and wear band smoothly, reduce nose and wear the band time, improve the method for the raising threading steel of push-pull type pickling of operating efficiency, adopt this to wear the band method and can avoid being with accidents such as steel is piled, blocks up, bumps, hit, stamp in crossing process.
The method of raising threading steel of push-pull type pickling provided by the invention adopts to drive the flexible stretching, extension hydro-cylinder of uncoiling guide plate and drive the lifting hydraulic cylinder that stretches the hydro-cylinder lifting, and this method comprises the steps:
1) will be with coil of strip to be installed on the Abrollhaspel, and depress pressure roller, the crawl Abrollhaspel makes the front end of band steel stretch out 250mm～350mm forward;
2) start the stretching, extension hydro-cylinder, the piston rod that stretches hydro-cylinder stretches out, and the flexible end that drives the uncoiling guide plate slides to the front bottom end of band steel, start lifting hydraulic cylinder, the piston rod of lifting hydraulic cylinder stretches out, and drives to stretch on hydro-cylinder and the uncoiling guide plate to move, and makes the front end of band steel upwarp 10 °～15 °; Restart lifting hydraulic cylinder, the piston rod withdrawal of lifting hydraulic cylinder starts and stretches hydro-cylinder, stretches the piston rod withdrawal of hydro-cylinder;
3) crawl Abrollhaspel makes the band steel enter between the straightener pinch roll along the uncoiling guide plate;
4) rotary turbine worm screw is adjusted the straightener roll gap, and the outlet roll gap that makes straightener is greater than the inlet roll gap, and crawl Abrollhaspel and straightener penetrate up and down between the straightening roll of straightener with the band steel simultaneously; Crawl straightener once more makes the front end of the band steel behind the aligning upwarp 3 °～5 °;
5) will be with steel to push to shears, taking the lead of steel front end is with in excision;
6) will penetrate between the interior extrusion roll of pickling tank with steel again.
Compared with prior art, the present invention has following advantage:
1, the present invention adopts and set up independent nose operation on the pull pickler group, straightener only is used for aligning, utilize stretching, extension hydro-cylinder and lifting hydraulic cylinder to realize that band steel front end upwarps, this method is not subjected to the influence of belt steel thickness and supplied materials factor, can pass straightener smoothly behind the band steel nose.
2, it is less that the inlet of straightener is depressed the angle, defective take the lead to penetrate after, under the squeezing action of two rows straightening roll, defect part is driven plain aligning, and excision just can reach the requirement of wearing the band nose again, so, once adjust the back and just can work continuously, improved working efficiency greatly.
3, adopt this to wear the band method, from " volume " to " wearing band " only needs 4 fens clock times,, do not improved production operation efficiency greatly, reduced the equipment breakdown incidence once because of wearing accidents such as band nose quality problems cause that the band steel is piled, blocks up, bumps, hit in rinse tank.
Description of drawings
The structural representation that Fig. 1 upwarps for band steel front end of the present invention;
Fig. 2 is a structural representation of wearing band after band steel front end of the present invention upwarps.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done to describe in further detail.
The structural representation that Fig. 1 upwarps for band steel front end of the present invention, Fig. 2 are the structural representation of wearing band after band steel front end of the present invention upwarps, as shown in the figure.The method employing that improves threading steel of push-pull type pickling drives uncoiling guide plate 1 stretching, extension hydro-cylinder 2 that stretches and the lifting hydraulic cylinder 3 that drives 2 liftings of stretching, extension hydro-cylinder, the cylinder seat of lifting hydraulic cylinder 3 is oblique to be fixedly mounted on the support of uncoiling guide plate 1 bottom, the piston rod of lifting hydraulic cylinder 3 stretches out obliquely, fixedly connected with the cylinder seat that stretches hydro-cylinder 2 in its end, the oblique band coil of strip 4 of piston rod that stretches hydro-cylinder 2 stretches out, and fixedlys connected with the flexible end of uncoiling guide plate 1 in its end.
This method specifically comprises the steps:
1) will be with coil of strip 4 to be installed on the Abrollhaspel 5, and depress pressure roller 6, crawl Abrollhaspel 5 makes the front end of band steel stretch out 250mm～350mm forward.
2) start stretching, extension hydro-cylinder 2, the piston rod that stretches hydro-cylinder 2 stretches out, the flexible end that drives uncoiling guide plate 1 slides to the front bottom end of band steel, start lifting hydraulic cylinder 3, the piston rod of lifting hydraulic cylinder 3 stretches out obliquely, drive to stretch on hydro-cylinder 2 and the uncoiling guide plate 1 and move, move the front end that orders about the band steel on the uncoiling guide plate 1 and upwarp, make the front end of band steel upwarp 10 °～15 °; Restart lifting hydraulic cylinder 3, the piston rod withdrawal of lifting hydraulic cylinder 3 is stretched hydro-cylinder 2 and uncoiling guide plate 1 and is moved down, and starts and stretches hydro-cylinder 2, stretches the piston rod withdrawal of hydro-cylinder 2, the flexible end withdrawal of uncoiling guide plate 1, and band steel front end " nose " operation is finished.
3) the crawl Abrollhaspel 5, and the band steel is entered between the straightener pinch roll 7 along uncoiling guide plate 1.
4) rotary turbine worm screw, adjust the straightener roll gap, the outlet roll gap that makes straightener 8 is greater than inlet roll gap (in the present embodiment, it is 2: 1 with the ratio of depressing the angle that enters the mouth that the angle is depressed in straightener 8 outlets), crawl Abrollhaspel 5 and straightener 8 penetrate up and down between the straightening roll of straightener 8 with the band steel simultaneously; The crawl straightener 8 once more, make the front end of the band steel behind the aligning upwarp 3 °～5 °.
5) will be with steel to push to shears 9, taking the lead of steel front end is with in excision.
6) will penetrate between the interior extrusion roll of pickling tank with steel again, realize strip pickling smoothly.
The employing diameter is 1.8m～2m, thickness is the band coil of strip 4 of the different size of 2.5mm～4mm, utilize this method to wear tape test, test result shows, pickling is worn and is with average 4min/ volume consuming time, and coil of strip of every production is just saved 5～6min, not once because of wearing accidents such as the band quality problems cause that the band steel is piled, blocks up, bumps, hit in rinsing and pickling tank, improve production operational availability greatly, reduced equipment failure rate.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (1)
1. a method that improves threading steel of push-pull type pickling is characterized in that, adopts to drive the flexible stretching, extension hydro-cylinder (2) of uncoiling guide plate (1) and drive the lifting hydraulic cylinder (3) that stretches hydro-cylinder (2) lifting, and this method comprises the steps:
1) will be with coil of strip (4) to be installed on the Abrollhaspel (5), and depress pressure roller (6), crawl Abrollhaspel (5) makes the front end of band steel stretch out 250mm～350mm forward;
2) start stretching, extension hydro-cylinder (2), the piston rod that stretches hydro-cylinder (2) stretches out, the flexible end that drives uncoiling guide plate (1) slides to the front bottom end of band steel, start lifting hydraulic cylinder (3), the piston rod of lifting hydraulic cylinder (3) stretches out, drive to stretch on hydro-cylinder (2) and the uncoiling guide plate (1) and move, make the front end of band steel upwarp 10 °～15 °; Restart lifting hydraulic cylinder (3), the piston rod withdrawal of lifting hydraulic cylinder (3) starts and stretches hydro-cylinder (2), stretches the piston rod withdrawal of hydro-cylinder (2);
3) crawl Abrollhaspel (5) makes the band steel enter between the straightener pinch roll (7) along uncoiling guide plate (1);
4) rotary turbine worm screw is adjusted the straightener roll gap, and the outlet roll gap that makes straightener (8) is greater than the inlet roll gap, and crawl Abrollhaspel (5) and straightener (8) will penetrate up and down between the straightening roll of straightener (8) with steel simultaneously; Crawl straightener (8) once more makes the front end of the band steel behind the aligning upwarp 3 °～5 °;
5) will be with steel to push to shears (9), taking the lead of steel front end is with in excision;
6) will penetrate between the interior extrusion roll of pickling tank with steel again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101363220A CN101812697B (en) | 2010-03-30 | 2010-03-30 | Method for raising threading steel of push-pull type pickling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101363220A CN101812697B (en) | 2010-03-30 | 2010-03-30 | Method for raising threading steel of push-pull type pickling |
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| CN101812697A CN101812697A (en) | 2010-08-25 |
| CN101812697B true CN101812697B (en) | 2011-09-21 |
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| CN2010101363220A Expired - Fee Related CN101812697B (en) | 2010-03-30 | 2010-03-30 | Method for raising threading steel of push-pull type pickling |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103088354B (en) * | 2011-10-31 | 2014-12-24 | 上海宝信软件股份有限公司 | Control method for eliminating strip steel bending-crease defect |
| CN103212576B (en) * | 2013-03-30 | 2015-05-13 | 马钢(集团)控股有限公司 | Fast threading method for broken strip of withdrawal and straightening machine |
| CN103952713A (en) * | 2014-03-26 | 2014-07-30 | 常熟市长江不锈钢材料有限公司 | Pushing-pulling type strip steel acid washing process |
| CN112108522B (en) * | 2019-06-21 | 2022-09-09 | 上海梅山钢铁股份有限公司 | Control method for realizing stable threading of head of cold-rolled strip steel |
| CN113732086A (en) * | 2021-10-09 | 2021-12-03 | 北京京诚之星科技开发有限公司 | Push-pull and continuous dual-purpose strip steel surface cleaning production line and cleaning method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6274091A (en) * | 1985-09-27 | 1987-04-04 | Sumitomo Heavy Ind Ltd | Structure of inlet side of continuous pickling equipment in strip line facility |
| CN2377022Y (en) * | 1997-06-26 | 2000-05-10 | 宝山钢铁(集团)公司 | Slitter edge winding-up machine |
| CN101125380B (en) * | 2006-08-14 | 2010-09-29 | 袁庆扬 | Strip steel continuous pickling edge processing device |
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