CN101396695A - Hot-rolled seamless tube on-line accelerated cooling device and method - Google Patents
Hot-rolled seamless tube on-line accelerated cooling device and method Download PDFInfo
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- CN101396695A CN101396695A CNA2008100129322A CN200810012932A CN101396695A CN 101396695 A CN101396695 A CN 101396695A CN A2008100129322 A CNA2008100129322 A CN A2008100129322A CN 200810012932 A CN200810012932 A CN 200810012932A CN 101396695 A CN101396695 A CN 101396695A
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Abstract
A hot-rolled seamless steel pipe on-line cooling accelerator and a method thereof are characterized in that an opposite tapered roller way set is divided into two roller sets and each set is provided with a set of horizontal revolving gear and a set of electric element control device below the opposite tapered roller way; therefore, each roller way set can form the set with changeable angle and the length of each roller way set with changeable angle is at least equal to the length of the manufactured steel pipe. The usage method is that by changing the angle of the roller way with changeable angle, the motion type of the hot-rolled seamless steel pipe is changed from horizontal advance to spiral advance after the hot-rolled seamless steel pipe thoroughly pass through a sizing mill. By improving the conventional roller way, the hot-rolled seamless steel pipe on-line cooling accelerator can be manufactured and by changing the advance type of the hot-rolled seamless steel pipe, even heating of the hot-rolled seamless steel pipe along lengthwise direction and circumferential direction can be ensured; therefore, the pipe can be prevented from being bent.
Description
Technical field
The invention belongs to technical field of steel rolling, particularly a kind of hot-rolled seamless tube on-line accelerated cooling device and method.
Background technology
The controlled rolling and controlled cooling technology (TMCP) of ferrous materials, technology and to the influence of steel structure property are one of research focuses of domestic and international material work always.Over nearly 30 years,,, made mechanical property obtain significant the raising by hot-rolled product being implemented online acceleration cooling (ACC) technology in fields such as sheet material, excellent wire rods.But, at the hot rolled seamless steel tube production field, because no matter shape of product is along its length, or temperature distributing disproportionation along the circumferential direction, all can cause steel pipe seriously crooked.Therefore, for many years, the online accelerated cooling process of hot rolled seamless steel tube fails effectively to implement.
Summary of the invention
At hot rolled seamless steel tube product processes and features of shape, the invention provides a kind of online accelerated cooling device and method of hot rolled seamless steel tube, can guarantee that hot rolled seamless steel tube quickens cooling after, the buckling phenomenon that the Yin Wendu inequality causes does not take place.
Hot-rolled seamless tube on-line accelerated cooling device of the present invention comprises sizing mill, cooler, cold bed and roller-way group.
It is characterized in that: is two cover roller-way groups with original hot rolled seamless steel tube cooling system to vertebra shape roller-way component, below vertebra shape roller-way group, be equipped with a cover horizontal rotary mechanism and a cover electrical equipment control appliance at every cover, make every cover roller-way group all become variable-angle roller-way group, and the length of the every cover variable-angle roller-way group length that all equals to produce steel pipe at least.
Horizontal rotary mechanism is made up of rotary body group and connecting rod, each rotary body of rotary body group is made up of rotating base, rotary sleeve and three bearings, three bearings are horizontal bearing, location bearing and alignment bearing, be sequentially arranged in from top to bottom rotating base below; Connect one on each rotary body vertebra shape roller-way is fixed together to vertebra shape roller-way and rotary body, can rotate simultaneously, link together by rotary sleeve with connecting rod between each rotary body with rotary body.
The angle of two cover variable-angle roller-way groups changes and can carry out at the same time or separately, wherein the variable-angle roller-way group near sizing mill is a variable-angle roller-way I group, another variable-angle roller-way group is a variable-angle roller-way II group, the angle of each roller-way of every cover variable-angle roller-way group changes consistent, and the roller-way center line angle theta when roller-way center line the during rotation of variable-angle roller-way group and variable-angle roller-way initial position is between 10 °～45 °.
The online acceleration cooling method of hot rolled seamless steel tube of the present invention is: adopt hot-rolled seamless tube on-line accelerated cooling device of the present invention, according to the following steps operation:
1, when hot rolled seamless steel tube does not pass through sizing mill fully, the roller-way center line of two cover variable-angle roller-ways is vertical with rolling line, is in initial position.
2, hot rolled seamless steel tube is fully by behind the sizing mill, control by electrical equipment, roller-way center line angle theta when the roller-way center line of two cover variable-angle roller-way groups and initial position is 10 °～45, and the motion mode of hot rolled seamless steel tube is advanced by level and becomes spiral and advance.Under the condition of roller-way invariablenes turning speed, change size by the angle of regulating two cover variable-angle roller-way groups, the pace of hot rolled seamless steel tube can be changed, thereby the time of hot rolled seamless steel tube can be adjusted by cooler.Be under the condition of roller-way invariablenes turning speed, the roller-way center line angle theta when the roller-way center line of variable-angle roller-way group and initial position is θ
1The time, the movement velocity of hot rolled seamless steel tube is v
1, the roller-way center line angle theta when the roller-way center line of variable-angle roller-way group and initial position is θ
2The time, the movement velocity of hot rolled seamless steel tube is v
2, work as θ
1θ
2The time, v
1＜v
2Therefore, can realize steel pipe temperature process parameter control by the control angle.
3, hot rolled seamless steel tube passes through cooler with the spiral progression, enter into variable-angle roller-way II group, until cold bed, no matter adopt which kind of type of cooling in the cooler, hot rolled seamless steel tube is all with the spiral progression, the generation of the cold back of hot rolled seamless steel tube buckling phenomenon is avoided in the even cooling that keeps length direction and circumferencial direction; Variable-angle roller-way I group after hot rolled seamless steel tube breaks away from sizing mill fully, by electrical equipment control, the roller-way center line of variable-angle roller-way I group recovers vertical with rolling line, connects follow-up hot rolled seamless steel tube, from step 1, repeat above-mentioned technical process successively.If stop online process for cooling, two cover variable-angle roller-way groups reset, and the roller-way center line of variable-angle roller-way group keeps vertical with rolling line, is the conventional mode of production.
The variation of the anglec of rotation is controlled by electrical equipment, promptly adopts the position near switch control or displacement encoder control.
When electrical equipment control employing was controlled near switch, its control method was: according to technological requirement, preestablish the anglec of rotation of variable-angle roller-way group, the position is adjusted to the position of setting near switch; After system obtains rotate instruction, move by hydraulic valve platform control hydraulic cylinder piston rod, hydraulic cylinder piston rod driven rotary axle sleeve moves, make variable-angle roller-way group give birth to rotation, the consistent variation of angle of each rotating base and variable-angle roller-way group, when hydraulic cylinder piston rod promotes rotary sleeve to the position during near switch, the position is closed near switch control hydraulic valve platform, and spinning movement is finished.
When displacement encoder control is adopted in electrical equipment control, set the stroke of hydraulic cylinder piston rod by the displacement encoder in the hydraulic cylinder, after system obtains rotate instruction, move by hydraulic valve platform control hydraulic cylinder, hydraulic cylinder piston rod driven rotary axle sleeve moves, make variable-angle roller-way group produce rotation, the consistent variation of angle of each rotating base and variable-angle roller-way group, when hydraulic cylinder piston rod promotes rotary sleeve to desired location, displacement encoder control hydraulic valve platform is closed, and spinning movement is finished.
The plant equipment that the inventive method is relied on is in process of production a kind of, but angle changing horizontally rotate to vertebra shape roller-way, by routine is improved vertebra shape roller-way, can be prepared into hot-rolled seamless tube on-line accelerated cooling device of the present invention.Adopt this device that hot rolled seamless steel tube is carried out online acceleration cooling, by changing the progression of hot rolled seamless steel tube, guaranteed hot rolled seamless steel tube along its length with the circumferencial direction thermally equivalent, the phenomenon of having avoided steel pipe to bend has a good application prospect.
Description of drawings
Fig. 1 is that hot-rolled seamless tube on-line accelerated cooling device of the present invention is used schematic diagram, figure a, step 1 schematic diagram, figure b, step 2 schematic diagram, figure c, step 3 schematic diagram; Wherein 1, sizing mill, 2, variable-angle roller-way I group, 3, variable-angle roller-way II group, 4, hot rolled seamless steel tube, 5, to vertebra shape roller-way, 6, cooler, 7, cold bed, 8, follow-up hot rolled seamless steel tube, 9, the roller-way center line during variable-angle roller-way initial position, 10, the roller-way center line when variable-angle roller-way angle changes.
Fig. 2 is that the spray cooler of hot-rolled seamless tube on-line accelerated cooling device of the present invention is used schematic diagram, among the figure 6, cooler, and 11, the inner surface of hot rolled seamless steel tube, 12, cooling medium.
Fig. 3 is the rotary body schematic diagram of the horizontal rotary mechanism of hot-rolled seamless tube on-line accelerated cooling device of the present invention, among the figure 13, rotating base, and 14, rotary sleeve, 15, horizontal bearing, 16, alignment bearing, 17, location bearing.
Fig. 4 is that the horizontal rotary mechanism and the electrical equipment control appliance of hot-rolled seamless tube on-line accelerated cooling device of the present invention used schematic diagram, among the figure 13, rotating base, 14, rotary sleeve, 18, the position is near switch, 19, connecting rod, 20, hydraulic cylinder, 21 roller-way group initial position center lines, 22, hydraulic cylinder piston rod.
Fig. 5 is described to vertebra shape roller-way schematic diagram for hot-rolled seamless tube on-line accelerated cooling device of the present invention.
The specific embodiment
Embodiment
Hot-rolled seamless tube on-line accelerated cooling device of the present invention such as Fig. 1, Fig. 3 and shown in Figure 4, in routine vertebra shape roller-way bottom is increased horizontal rotary mechanism, make routine consist of variable-angle roller-way group to vertebra shape roller-way, and control the variation of its anglec of rotation by electrical equipment, wherein the excursion of variable-angle is: roller-way center line 9 angle theta when roller-way center line 10 when variable-angle roller-way angle changes and variable-angle roller-way initial position are between 10 °～45 °; Sizing mill 1 to the roller-way of cold bed 7 is divided into two cover variable-angle roller-way groups, is respectively variable-angle roller-way I group 2 and variable-angle roller-way II group 3,
The length of two cover variable-angle roller-way groups is all more than or equal to the maximum length of producing steel pipe, be equipped with a cover horizontal rotary mechanism and a cover electrical equipment control appliance below every cover roller-way group, make every cover roller-way group all become variable-angle roller-way group, the angle of two cover variable-angle roller-way groups changes and can carry out at the same time or separately.
The rotary body of the horizontal rotary mechanism of hot-rolled seamless tube on-line accelerated cooling device of the present invention as shown in Figure 3, horizontal rotary mechanism is made up of rotary body group and connecting rod 19, wherein each rotary body of rotary body group is made up of rotating base 13 and three groups of bearings, three groups of bearings are horizontal bearing 15, alignment bearing 16 and location bearing 17, be sequentially arranged in rotating base 13 below; Be provided with rotary sleeve 14 below each rotating base 13, rotary sleeve 14 is connected each rotary body with connecting rod 19, and makes the angle of each rotary body change unanimity by the hydraulic cylinder piston rod 22 driven rotary axle sleeves 14 of hydraulic cylinder 20.
Connect one on each rotary body vertebra shape roller-way is fixed together to vertebra shape roller-way and rotary body, can rotate simultaneously, link together by rotary sleeve 14 with connecting rod 19 between each rotary body with rotary body.
The online acceleration cooling step of hot rolled seamless steel tube of the present invention as shown in Figure 1, wherein scheme a for when hot rolled seamless steel tube 4 does not pass through sizing mill 1 fully, variable-angle roller-way I group 2 is vertical with rolling line with the roller-way center line 9 of variable-angle roller-way II group 3, is in initial position.
Figure b is that hot rolled seamless steel tube is fully by behind the sizing mill 1, by electric and mechanical control, roller-way center line 9 angle theta of the roller-way center line 10 of variable-angle roller-way I group 2 and variable-angle roller-way 3II group during with initial position are 10 °～45, and the motion mode of hot rolled seamless steel tube 4 is advanced by level and becomes spiral and advance.
Figure c is that hot rolled seamless steel tube 4 passes through cooler 6 with the spiral progression, enter into variable-angle roller-way II group 3, until cold bed 7, no matter adopt which kind of type of cooling in the cooler 6, hot rolled seamless steel tube 4 is all because of the spiral progression, keep length and circumferential even cooling, avoid the generation of hot rolled seamless steel tube 4 cold back buckling phenomenons; When hot rolled seamless steel tube 4 breaks away from variable-angle roller-way I group 2 fully, by electric and mechanical control, the roller-way center line of variable-angle roller-way I group 2 recovers vertical with rolling line, connects follow-up hot rolled seamless steel tube 8, from step 1, repeats above-mentioned technical process successively.If stop online process for cooling, two cover variable-angle roller-ways reset, and the roller-way center line of variable-angle roller-way group keeps vertical with rolling line, is the conventional mode of production.
For the horizontal rotary mechanism of hot-rolled seamless tube on-line accelerated cooling device of the present invention and electrical equipment control appliance method of work as shown in Figure 4, the electrical equipment control appliance is that the position is near switch 18, preestablish the anglec of rotation of each roller-way of variable-angle roller-way group, the position is adjusted to the position of setting near switch 18; After system obtains rotate instruction, move by hydraulic valve platform control hydraulic cylinder piston rod 22, hydraulic cylinder piston rod 22 drives one of them rotating base 13 and rotates, and make each roller-way of each rotary body and variable-angle roller-way group produce rotation synchronously by rotary sleeve 14 drivening rods 19, when certain rotating base 13 that proximity transducer (iron plate) is installed to the position during near switch 18 positions, close near switch 18 control hydraulic valve platforms, spinning movement is finished.
According to hot rolled seamless steel tube product wall thickness specifications, the angle theta of the roller-way center line 9 when roller-way center line 10 when selecting variable-angle roller-way group angle to change and variable-angle roller-way initial position.Adopt spray cooler shown in Figure 2,7 meters of cooler 6 length overalls, cooling medium 12 is a turbid circulating water, flow is 724 tons/hour.
Cooling effect sees Table 1.
The online acceleration cooling effect of table 1 hot rolled seamless steel tube steel pipe
Claims (8)
1, a kind of hot-rolled seamless tube on-line accelerated cooling device, mainly comprise sizing mill, cooler, cold bed and roller-way group, it is characterized in that: will be two cover roller-way groups vertebra shape roller-way component, below vertebra shape roller-way group, be equipped with a cover horizontal rotary mechanism and a cover electrical equipment control appliance at every cover, make every cover all become variable-angle roller-way group to vertebra shape roller-way group, and the length of the every cover variable-angle roller-way group length that all equals to produce steel pipe at least.
2, a kind of hot-rolled seamless tube on-line accelerated cooling device according to claim 1, the angle that it is characterized in that two cover variable-angle roller-way groups can change at the same time or separately, wherein the variable-angle roller-way group near sizing mill is a variable-angle roller-way I group, another variable-angle roller-way group is a variable-angle roller-way II group, the angle of each roller-way of every cover variable-angle roller-way group changes consistent, roller-way center line during with variable-angle roller-way initial position is a baseline, and the angle θ of variable-angle roller-way group rotation is between 10 °～45 °.
3, a kind of hot-rolled seamless tube on-line accelerated cooling device according to claim 1, it is characterized in that horizontal rotary mechanism is made up of rotary body group and connecting rod, each rotary body of rotary body group is made up of rotating base, rotary sleeve and three bearings, three bearings are horizontal bearing, location bearing and alignment bearing, be sequentially arranged in from top to bottom rotating base below; Connect one on each rotary body to vertebra shape roller-way, link together by rotary sleeve with connecting rod between each rotary body.
4, the online acceleration cooling method of a kind of hot rolled seamless steel tube, it is characterized in that adopting the described hot-rolled seamless tube on-line accelerated cooling device of claim 1 to carry out the online acceleration cooling of hot rolled seamless steel tube, concrete steps are: when (1) does not pass through sizing mill fully when hot rolled seamless steel tube, the roller-way center line of two cover variable-angle roller-way groups is vertical with rolling line, is in initial position; (2) after hot rolled seamless steel tube enters variable-angle roller-way I group by sizing mill fully, by the anglec of rotation of electrical equipment control two cover variable-angle roller-way groups; (3) hot rolled seamless steel tube enters into variable-angle roller-way II group, until cold bed by cooler; When hot rolled seamless steel tube broke away from variable-angle roller-way I group fully, the roller-way center line of variable-angle roller-way I group recovered vertical with rolling line, and follow-up hot rolled seamless steel tube repeats above-mentioned technical process successively from step (1); If stop online process for cooling, two cover variable-angle roller-way groups reset, and the roller-way center line of variable-angle roller-way group keeps vertical with rolling line, is the conventional mode of production, wherein the variation of the anglec of rotation is controlled by electrical equipment, promptly adopts the position near switch control or displacement encoder control.
5, the online acceleration cooling method of a kind of hot rolled seamless steel tube according to claim 4, it is characterized in that when electrical equipment control adopts the position to control near switch, its control method is: according to technological requirement, preestablish the anglec of rotation of variable-angle roller-way group, the position is adjusted to the position of setting near switch; After system obtains rotate instruction, move by hydraulic valve platform control hydraulic cylinder piston rod, hydraulic cylinder piston rod driven rotary axle sleeve moves, make the rotation of variable-angle roller-way group, the angle of each rotating base and variable-angle roller-way group changes consistent, when hydraulic cylinder piston rod promotes rotary sleeve to the position during near switch, the position is closed near switch control hydraulic valve platform, and spinning movement is finished.
6, the online acceleration cooling method of a kind of hot rolled seamless steel tube according to claim 4, it is characterized in that when displacement encoder control is adopted in electrical equipment control, set the stroke of hydraulic cylinder piston rod by the displacement encoder in the hydraulic cylinder, after system obtains rotate instruction, move by hydraulic valve platform control hydraulic cylinder, hydraulic cylinder piston rod driven rotary axle sleeve moves, make variable-angle roller-way group produce rotation, the angle of each rotating base and variable-angle roller-way group changes consistent, when hydraulic cylinder piston rod promotes rotary sleeve to desired location, displacement encoder control hydraulic valve platform is closed, and spinning movement is finished.
7, the online acceleration cooling method of a kind of hot rolled seamless steel tube according to claim 4 is characterized in that hot rolled seamless steel tube fully by behind the sizing mill, and motion mode is advanced by level and becomes spiral and advance.
8, the online acceleration cooling method of a kind of hot rolled seamless steel tube according to claim 4, after it is characterized in that hot rolled seamless steel tube enters variable-angle roller-way I group by sizing mill fully, under the condition of roller-way invariablenes turning speed, change size by the angle of regulating two cover variable-angle roller-way groups, the pace of hot rolled seamless steel tube can be changed, thereby the time of hot rolled seamless steel tube can be adjusted by cooler.
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| CNA2008100129322A CN101396695A (en) | 2008-08-26 | 2008-08-26 | Hot-rolled seamless tube on-line accelerated cooling device and method |
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| CNA2008100129322A CN101396695A (en) | 2008-08-26 | 2008-08-26 | Hot-rolled seamless tube on-line accelerated cooling device and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269735A (en) * | 2011-07-18 | 2011-12-07 | 杭州浙大精益机电技术工程有限公司 | Self-locking-held device for adjusting angle of linear roll table |
| CN106040758A (en) * | 2016-05-26 | 2016-10-26 | 马鞍山市安工大工业技术研究院有限公司 | Online accelerated cooling method for production of hot rolled seamless steel tube |
| CN106269931A (en) * | 2016-10-25 | 2017-01-04 | 东北大学 | A kind of method of hot rolled seamless steel tube on-line continuous cooling |
| CN106379733A (en) * | 2016-11-25 | 2017-02-08 | 北京京诚凤凰工业炉工程技术有限公司 | Rapid-cooling and conveying device for axles |
| CN111589880A (en) * | 2020-04-29 | 2020-08-28 | 东北大学 | Control method for improving structure uniformity of on-line cooling process of medium-thickness wall seamless steel pipe |
-
2008
- 2008-08-26 CN CNA2008100129322A patent/CN101396695A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269735A (en) * | 2011-07-18 | 2011-12-07 | 杭州浙大精益机电技术工程有限公司 | Self-locking-held device for adjusting angle of linear roll table |
| CN106040758A (en) * | 2016-05-26 | 2016-10-26 | 马鞍山市安工大工业技术研究院有限公司 | Online accelerated cooling method for production of hot rolled seamless steel tube |
| CN106269931A (en) * | 2016-10-25 | 2017-01-04 | 东北大学 | A kind of method of hot rolled seamless steel tube on-line continuous cooling |
| CN106379733A (en) * | 2016-11-25 | 2017-02-08 | 北京京诚凤凰工业炉工程技术有限公司 | Rapid-cooling and conveying device for axles |
| CN111589880A (en) * | 2020-04-29 | 2020-08-28 | 东北大学 | Control method for improving structure uniformity of on-line cooling process of medium-thickness wall seamless steel pipe |
| CN111589880B (en) * | 2020-04-29 | 2021-09-28 | 东北大学 | Control method for improving structure uniformity of on-line cooling process of medium-thickness wall seamless steel pipe |
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Open date: 20090401 |