CN201399466Y - Endless rolling cold continuous rolling device - Google Patents
Endless rolling cold continuous rolling device Download PDFInfo
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- CN201399466Y CN201399466Y CN2009201456209U CN200920145620U CN201399466Y CN 201399466 Y CN201399466 Y CN 201399466Y CN 2009201456209 U CN2009201456209 U CN 2009201456209U CN 200920145620 U CN200920145620 U CN 200920145620U CN 201399466 Y CN201399466 Y CN 201399466Y
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Abstract
The utility model belongs to the field of metal material shaping and processing and particularly relates to an endless rolling cold continuous rolling device. The device comprises an uncoiler (1), a joint welder (2), a loop (3), a tension roller (4), an 8-roller 6-rack cold continuous mill, a flying shear (8) and a tension reel (9) that are sequentially arranged, wherein the 8-roller 6-rack cold continuous mill has 6 irreversible 8-roller mills; each 8-roller mill comprises two pairs of top and bottom backrest backup rolls (5) arranged in parallel along horizontal direction, one pair of top and bottom working rolls (7), and an intermediate backup roll (6) respectively arranged between the two pairs of top and bottom backrest backup rolls (5) and the working rolls (7); the intermediate backup roll (6) is a driving roll; and the body width of the working roll (7) is 1, 350mm. The endless rolling cold continuous rolling device can realize the purposes of improving the quality of strip andproductivity, and being beneficial to prolonging the service life of backup rolls and decreasing the unit ton consumption of rolling mills.
Description
Technical field
The utility model belongs to metal material moulding and manufacture field, particularly a kind of endless rolling continuous cold-rolling equipment.
Background technology
A carbon steel particularly total reduction ratio of rolling process of low carbon mild steel can reach more than 95%, and every time reduction ratio can reach 60%, and this just is tandem mill economic rolling advantage of having created of thinner specification of finishing in a rolling process.But at present both at home and abroad a large amount of types that adopt are five frame tandem rollings, and also just about 87%, minority reaches 90% for total reduction ratio of rolling process, and total reduction ratio is the deficiency that has five frame connection rolling machine now for a short time.If on existing five frame bases, increase a frame again, become six frame tandem mills, can improve the raw materials size upper limit or reduce the finished product lower size limit, make tandem mill in a rolling process, finish the rolling of thinner specification, or finish bigger reduction ratio, and it is more reasonable that reduction ratio distributes, and pressure distribution is more even, thereby enlarged milling train production specification scope, reduced production cost.
Under the condition that allows, should adopt high as far as possible tension-rolling in the cold-rolled process, to improve template, the stable rolling process is very important.In the operation of rolling, general unit tension is 20%-70% σ
s, for the wide milling train in the 1000mm left and right sides, tension force can be got 5000kN between the tandem mill frame in theory, and for reversable mill, generally is difficult to reach.Along with rolling tensile force improves, mill speed also can improve.Tandem mill PR reversable mill exceeds 4 times, specific yield consumption than reversable mill consume half as large more than.
The thin plate strip-rolling adopts the 4-6 roller mill rolling mostly, the backing roll of 4 roller mills, 6 roller mills all is the simply supported beam of two fulcrums, roll-force is delivered to backing roll by working roll, intermediate calender rolls (4 roller mills do not have intermediate calender rolls), finally act on the backing roll two end supports point, stressed back produces amount of deflection, cause the rolling extension in band cross section uneven easily, there is the bad problem of strip material glacing flatness, thereby influence strip material amount, with the working roll is live-roller, limit the diameter of working roll, strengthened the energy consumption of milling train.
In the finish rolling of traditional monolithic base, normally set gap values between rollers according to the prediction of slab head roll-force.If the roll-force forecasting inaccuracy, gap values between rollers sets that deviation is big, and then thickness of slab and desired value deviation also increase, thus produce that the strip crown that causes because of the roll-force predicated error changes and frame between plate shape fluctuate.On the other hand, in one-piece roller, worn tape speed and limit, mill speed can not be very high, and the amount of rolling of unit width is that mass flow (thickness of slab * mill speed) is little, so output is not high.Wear tape speed if improve, then can be owing to the various reasons such as band problem and head folding of wearing cause that fault rate increases.In addition, between each volume of finished product band, finishing mill all needs certain hour with the tape spare conversion of wearing between two coiling machines, and these unavoidable slowtimes have caused the decline of productivity ratio.
The utility model content
The purpose of this utility model is to provide a kind of endless rolling continuous cold-rolling equipment, realizes improving strip quality, boost productivity and reducing the purpose of milling train unit's ton consumption.
In order to achieve the above object, the utility model is achieved in that
A kind of endless rolling continuous cold-rolling equipment of the utility model comprises uncoiler, joint welding machine, kink, jockey pulley, eight rollers, 6 frame cold continuous rollings, flying shear and the pull reel arranged successively.Wherein: eight rollers, 6 frame cold continuous rollings have 6 irreversible mkw mills, its every mkw mill comprises the back support roller that upper and lower two pairs of along continuous straight runs be arranged in parallel, a pair of upper and lower working roll, and between upper and lower two pairs of back support rollers and working roll, an intermediate support roller being installed respectively, intermediate calender rolls is a live-roller.
A kind of endless rolling continuous cold-rolling equipment of the utility model, wherein: the working roll of each frame is play vertically.
A kind of endless rolling continuous cold-rolling equipment of the utility model, wherein: jockey pulley comprises two transmission rollers, is arranged between kink and eight rollers, the 6 frame cold continuous rollings, the band steel is wrapped on the body of roll of two rollers with S shape.
Hot-strip is after pickling, and unit tension is 10-25kN when batching, before milling train during the kink uncoiling, tension force can be no more than 10-25kN, and preceding through jockey pulley to milling train, tension force is brought up to 100-200kN, help rolling, this moment since the milling train entrance velocity very low, the milling train power consumption is very little.The coiling tension of rolling backward pull coiling machine is 20-80kN.
The working roll of mkw mill is play vertically, and all is provided with this device on each frame, can adjust the roll forming of each frame easily according to technology, thereby adjusts template rapidly easily.Conventional roll respectively has the length about 100mm apart from its two ends, for case hardness than middle part surface hardness " soft band " on the low side, do not use during general steel rolling, 6 frames, eight roller tandem mills can partly utilize " soft band ", make that body of roll width is that the milling train of 1350mm can roll out the band steel that width is 1250mm.
When adopting endless rolling, can be implemented in the roll change cycle, the butt welding of raw material head and the tail got up, raw material is infinitely prolonged with welding method, realize uninterruptedly rolling, simultaneously with steel by can cut into the coil of strip of Different Weight after the 6th as required through flying shear.
Adopt endless rolling to make the whole roll coil of strip keep constant-tension, the realization stable rolling, and can avoid the predicated error that causes by thermal expansion of rollers and wearing and tearing and adjust the thickness of slab that error caused changing and the strip crown variation, can significantly improve the thickness of slab precision.
Intermittent time in the operation of rolling subtracts minimum in endless rolling, significantly improved thin specification rolling efficiency.Therefore produce thin and wide steel plate and ultra-thin dimension board becomes the most promising application prospect of endless rolling technology.
The utility model compared with prior art, beneficial effect is:
1. improved strip quality.
2. finish the rolling of thinner specification in a rolling process, or finish bigger reduction ratio, it is more reasonable that reduction ratio distributes, and pressure distribution is more even, enlarges milling train production specification scope, boosts productivity, and reduces production costs.
3. each frame roll-force is relatively low, helps improving the backing roll life-span, reduces milling train unit's ton consumption.
Description of drawings
Fig. 1 is the general arrangement schematic of the utility model endless rolling continuous cold-rolling equipment.
Wherein: 1 uncoiler, 2 joint welding machines, 3 kinks, 4 jockey pulleys, 5 upper and lower back support rollers, 6 upper and lower intermediate calender rolls, 7 upper and lower working rolls, 8 flying shears, 9 pull reels.
The specific embodiment
Below in conjunction with embodiment the utility model endless rolling continuous cold-rolling equipment is described further.
By shown in Figure 1, a kind of endless rolling continuous cold-rolling equipment of the utility model comprises uncoiler 1, joint welding machine 2, kink 3, jockey pulley 4, eight rollers, 6 frame cold continuous rollings, flying shear 8 and the pull reel 9 arranged successively.Wherein: eight rollers, 6 frame cold continuous rollings have 6 irreversible mkw mills, its every mkw mill comprises the back support roller 5 that upper and lower two pairs of along continuous straight runs be arranged in parallel, a pair of upper and lower working roll 7, and between described upper and lower two pairs of back support rollers 5 and working roll 7, an intermediate support roller 6 is installed respectively, intermediate calender rolls 6 is a live-roller, and the working roll of each frame play vertically.
Mentioned strain roller 3 comprises two transmission rollers, is arranged between kink 3 and eight rollers, the 6 frame cold continuous rollings, and the band steel is wrapped on the body of roll of two rollers with S shape.
Have the endless rolling eight rollers 6 frame continuous cold-rolling equipments of said structure, working roll 7 body of roll width are 1350mm, can be 800-1250mm less than the width that the belt steel rolling of 3.5mm goes out finished strip with raw thickness, and thickness is 0.15-0.5mm.
In order to further specify the operation of rolling situation of each milling train, table 1 and table 2 example respectively go out the rolling schedule of 5 frame tandem mills and 6 frame tandem mills, wherein: blank equally all is to adopt the wide 08F hot-strip of the thick 1010mm of 2.5mm, rolls into 0.2 * 1010mm band steel, and mill speed is 15m/s.
Table 15 frame tandem mill rolling schedules
| The N frame | Hmm thickness | The H-hmm drafts | The E1% reduction ratio | The total reduction ratio of E0% | The ThkN backward pull | The TqkN forward pull | The PkN roll-force | The MkNm roll torque | The NkW rolling power | The Vm/s mill speed | The Dhmm tolerance |
| 2.50 | 1.200 | 0.050 | |||||||||
| 1 | 1.60 | 0.90 | 36.1 | 36.1 | 98.0 | 196.0 | 6967 | 46.5 | 563.3 | 1.88 | 0.025 |
| 2 | 0.87 | 0.73 | 45.5 | 65.1 | 196.0 | 68.6 | 7725 | 76.9 | 1889.8 | 3.44 | 0.013 |
| 3 | 0.45 | 0.42 | 48.0 | 81.9 | 68.6 | 98.0 | 7852 | 43.1 | 1965.2 | 6.62 | 0.008 |
| 4 | 0.23 | 0.22 | 48.6 | 90.7 | 98.0 | 68.6 | 7914 | 40.9 | 3505.6 | 12.87 | 0.006 |
| 5 | 0.20 | 0.03 | 14.2 | 92.0 | 68.6 | 19.6 | 6173 | 21.0 | 2029.7 | 15.00 | 0.005 |
Total power consumption: 9993.6kW ≈ 10000kW
Table 26 frame tandem mill rolling schedules
| The N frame | Hmm thickness | The H-hmm drafts | The E1% reduction ratio | The total reduction ratio of E0% | The ThkN backward pull | The TqkN forward pull | The PkN roll-force | The MkNm roll torque | The NkW rolling power | The Vm/s mill speed | The Dhmm tolerance |
| 2.50 | 1.200 | 0.050 | |||||||||
| 1 | 1.55 | 0.95 | 37.8 | 37.8 | 147.0 | 235.2 | 6878 | 48.6 | 605.1 | 1.93 | 0.025 |
| 2 | 0.91 | 0.64 | 41.2 | 63.5 | 235.2 | 98.0 | 6844 | 68.6 | 1608.5 | 3.28 | 0.013 |
| 3 | 0.54 | 0.37 | 41.0 | 78.4 | 98.0 | 107.8 | 6855 | 37.9 | 1455.8 | 5.57 | 0.007 |
| 4 | 0.30 | 0.24 | 44.2 | 88.0 | 107.8 | 98.0 | 6829 | 34.0 | 2263.3 | 9.98 | 0.005 |
| 5 | 0.22 | 0.08 | 26.1 | 91.1 | 98.0 | 49.0 | 6907 | 28.5 | 2478.7 | 13.50 | 0.005 |
| 6 | 0.20 | 0.02 | 10.0 | 92.0 | 49.0 | 19.6 | 6286 | 16.4 | 1585.4 | 15.00 | 0.005 |
Total power consumption: 9996.8kW ≈ 10000kW
Comparison sheet 1 and table 2 can draw as drawing a conclusion:
1. under identical rolling condition, the total power consumption of 6 frames and 5 frames is approaching, increases a frame although 6 frame tandem mills are described, the overall power of milling train group can not increase.
2.6 each frame roll-force of frame tandem mill is generally low than five frames, helps improving the back support roller life-span, reduces milling train unit's ton consumption.
3.6 Tension Difference reduces between working roll and belt steel surface and rubs sassafras with the hands, thereby help improving plate face quality than the low 19.6kN of five frame connection rolling machine before and after the last rolling mill of frame tandem mill.
4.6 the maximum tension 235.2kN of machine frame rolling mill far exceeds the tension value (147kN) of general high parameter single chassis reversable mill.
5. during rolling thin specification band steel, be easy to broken belt later at the 3rd machine frame rolling mill, when adopting six frames, rolled piece thickness is 0.54mm after the 3rd frame, the thickness (0.45mm) of rolled piece during greater than employing 5 frames, illustrate that 6 frame broken belts tendency is little, the thickness of each passage rolled piece is basic identical thereafter, but tension force is on the low side.
In a word, the utility model adopts mkw mill, because working roll roller footpath is less than normal, helps that rolling working roll is play vertically than the strip steel, not only can improve template, and creates favorable conditions for the width that expands wide flat steel.The weight of a mkw mill only is 1/3rd of general 4-6 roller mill weight, increases a frame and also can not bring significant impact to equipment manufacturing cost.
The utility model utilizes the many advantages of frame, reduces coiling tension, helps the operation of back, the rolling planishing pass that is actually in the most last 1 road of tandem mill wherein, drafts is very little, and the front and back Tension Difference is smaller as far as possible, can avoid being with steel and roll to produce abrasive possibility.
The utility model is mainly used in the production straight carbon steel, be used to do clad plate or other purposes cold-reduced sheets, can also produce the motor silicon strip of silicone content 2%, plate is wide generally based on 1000mm, and can produce the 1250mm wide flat steel, rolling raw material can with thick be 3.5mm following through pickling hot-strip or through the cold-strip steel of bright annealing, the thinnest rolling 0.15-0.2mm that reaches.
The above, only be an embodiment of the present utility model, be not that the utility model is done any pro forma restriction, any those skilled in the art are not in breaking away from the technical solutions of the utility model scope, some variations or the change that utilize the technology contents of above-mentioned announcement to make are the equivalent embodiment of equivalent variations.So long as do not break away from the content of technical solutions of the utility model, to any simple modification, equivalent variations or change that above embodiment did, all still belong in the scope of technical solutions of the utility model according to technical spirit of the present utility model.
Claims (3)
1. endless rolling continuous cold-rolling equipment, comprise the uncoiler of arranging successively (1), joint welding machine (2), kink (3), jockey pulley (4), eight rollers, 6 frame cold continuous rollings, flying shear (8) and pull reel (9), it is characterized in that: described eight rollers, 6 frame cold continuous rollings have 6 irreversible mkw mills, its every mkw mill comprises, the back support roller (5) that following two pairs of along continuous straight runs be arranged in parallel, on a pair of, bottom working roll (7), and on described, one intermediate support roller (6) respectively is installed between following two pairs of back support rollers (5) and the working roll (7), and intermediate calender rolls (6) is a live-roller.
2. according to the described endless rolling continuous cold-rolling equipment of claim 1, it is characterized in that: the working roll of described each frame is play vertically.
3. according to claim 1 or 2 described endless rolling continuous cold-rolling equipments, it is characterized in that: jockey pulley (3) comprises two transmission rollers, be arranged between described kink (3) and eight rollers, the 6 frame cold continuous rollings, the band steel is wrapped on the body of roll of described two rollers with S shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201456209U CN201399466Y (en) | 2009-03-19 | 2009-03-19 | Endless rolling cold continuous rolling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201456209U CN201399466Y (en) | 2009-03-19 | 2009-03-19 | Endless rolling cold continuous rolling device |
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| CN201399466Y true CN201399466Y (en) | 2010-02-10 |
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| CN2009201456209U Expired - Fee Related CN201399466Y (en) | 2009-03-19 | 2009-03-19 | Endless rolling cold continuous rolling device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829678A (en) * | 2010-04-16 | 2010-09-15 | 刘相华 | Method for endless rolling of sectional material and rod and wire material and flexible connecting device thereof |
| CN102172834A (en) * | 2010-12-30 | 2011-09-07 | 宝山钢铁股份有限公司 | Production line and process for continuous rolling of single rack |
| WO2012068828A1 (en) * | 2010-11-26 | 2012-05-31 | 宝山钢铁股份有限公司 | Cold rolling method for preventing high silicon strip steel from breaking |
| CN103722011A (en) * | 2013-12-31 | 2014-04-16 | 一重集团大连设计研究院有限公司 | Novel stainless steel cold continuous rolling technology and unit thereof |
| CN105598165A (en) * | 2016-03-17 | 2016-05-25 | 杨尹华 | Cold drawing rolling mill and drive device |
| CN110434171A (en) * | 2019-07-16 | 2019-11-12 | 北京科技大学 | A kind of band tension continuous rolling method of high silicon steel |
-
2009
- 2009-03-19 CN CN2009201456209U patent/CN201399466Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829678A (en) * | 2010-04-16 | 2010-09-15 | 刘相华 | Method for endless rolling of sectional material and rod and wire material and flexible connecting device thereof |
| CN101829678B (en) * | 2010-04-16 | 2012-06-27 | 刘相华 | Method for endless rolling of sectional material and rod and wire materials |
| WO2012068828A1 (en) * | 2010-11-26 | 2012-05-31 | 宝山钢铁股份有限公司 | Cold rolling method for preventing high silicon strip steel from breaking |
| US9056343B2 (en) | 2010-11-26 | 2015-06-16 | Baoshan Iron & Steel Co., Ltd. | Cold-rolling method for preventing fracture of high-silicon strip steel |
| CN102172834A (en) * | 2010-12-30 | 2011-09-07 | 宝山钢铁股份有限公司 | Production line and process for continuous rolling of single rack |
| CN102172834B (en) * | 2010-12-30 | 2015-04-01 | 宝山钢铁股份有限公司 | Production line and process for continuous rolling of single rack |
| CN103722011A (en) * | 2013-12-31 | 2014-04-16 | 一重集团大连设计研究院有限公司 | Novel stainless steel cold continuous rolling technology and unit thereof |
| CN105598165A (en) * | 2016-03-17 | 2016-05-25 | 杨尹华 | Cold drawing rolling mill and drive device |
| CN110434171A (en) * | 2019-07-16 | 2019-11-12 | 北京科技大学 | A kind of band tension continuous rolling method of high silicon steel |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100210 Termination date: 20110319 |