CN101804422B - Ultrafast cooling device for large rolled H-shaped steel - Google Patents
Ultrafast cooling device for large rolled H-shaped steel Download PDFInfo
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- CN101804422B CN101804422B CN2010101084218A CN201010108421A CN101804422B CN 101804422 B CN101804422 B CN 101804422B CN 2010101084218 A CN2010101084218 A CN 2010101084218A CN 201010108421 A CN201010108421 A CN 201010108421A CN 101804422 B CN101804422 B CN 101804422B
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- 238000001816 cooling Methods 0.000 claims abstract description 111
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 56
- 239000010959 steel Substances 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000005096 rolling process Methods 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 238000010926 purge Methods 0.000 claims 4
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000007664 blowing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 210000001331 nose Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
一种大型H型钢轧后超快速冷却装置，属于结构用高性能H型钢生产控制冷却技术领域。本发明提供一种可使H型钢具有良好的组织状态和力学性能的大型H型钢轧后超快速冷却装置。本发明包括上部固定有横移轨道的轨道支座，在横移轨道上设置具有冷却台架的冷却单元，在冷却台架的下方设置有横移滚轮；冷却单元包括侧喷嘴单元、上喷嘴单元和具有凹槽的侧挡板；侧挡板固定在冷却台架上，侧喷嘴箱体固定在侧挡板的外侧；上喷嘴单元设置在侧挡板内侧的上方，在输送辊道的电机底座上设置有下喷嘴单元，所述的喷嘴单元与供水管相连接；在供水管上分别设置有电磁流量计、压力传感器和气动开闭阀，在该超快速冷却装置的入口处和出口处分别设置有测温仪。
The utility model relates to an ultra-rapid cooling device for large-scale H-shaped steel after rolling, which belongs to the technical field of production control and cooling of high-performance H-shaped steel for structures. The invention provides an ultra-rapid cooling device for large-scale H-shaped steel after rolling, which can make the H-shaped steel have good structural state and mechanical properties. The present invention comprises a track support with a traversing track fixed on the upper part, a cooling unit with a cooling stand is arranged on the traversing track, and a traversing roller is arranged under the cooling stand; the cooling unit includes a side nozzle unit and an upper nozzle unit and a side baffle with a groove; the side baffle is fixed on the cooling stand, and the side nozzle box is fixed on the outside of the side baffle; the upper nozzle unit is arranged above the inner side of the side baffle, on the motor base of the conveying roller table There is a lower nozzle unit on the top, and the nozzle unit is connected to the water supply pipe; an electromagnetic flowmeter, a pressure sensor and a pneumatic on-off valve are respectively arranged on the water supply pipe, and the inlet and outlet of the ultra-fast cooling device are respectively A thermometer is provided.
Description
Technical field:
The invention belongs to structure with high-performance H shaped steel production control cooling technology field, particularly relate to a kind of Ultrafast cooling device for large rolled H-shaped steel.
Background technology:
H shaped steel is a kind of desirable economic section section bar, it is compared with common I-steel, have in light weight, performance good, specification is many, section economical rationality, easy to use and save advantage such as metal material, be widely used in skyscraper, machine-building, large-sized workshop, power plant construction, airport, port and pier, tunnel, underground railway, bridge, boats and ships, haulage vehicle, highway, tunnel support engineering, offshore oil platform, simple and easy garage, beach and spend a holiday in room and the various engineering structure part.
H shaped steel has that two edge of a wing inner surfaces termination parallel, two edges of a wing is rectangular, Metal Distribution rationally, good rigidly, not flexible, advantages such as mechanical property good, simple installation, so purposes is comparatively extensive.In engineering, use H shaped steel, generally can save steel 15%～40%, and can save man-hour, shorten the construction period, raise the efficiency, reduce labour intensity, specious, generally adopt H shaped steel to replace common I-steel abroad.
H shaped steel is because its section structure complexity is spared at the rolling temperature distributing disproportionation that reaches its each several part in the process of cooling off subsequently on cold bed, and the binding site temperature of the edge of a wing and web is the highest, reduces gradually to the end on the edge of a wing.In order to produce high-intensity H shaped steel, generally adopt the method for adding alloying element at present, make production cost significantly increase; Whole section usually uneven structural state can occur in H rolling of sectional iron process simultaneously, finally makes the comprehensive mechanical property of H shaped steel can not reach production standard, can't satisfy user's requirement.
Summary of the invention:
Problem at prior art exists the invention provides the Ultrafast cooling device for large rolled H-shaped steel that a kind of H of making shaped steel has favorable tissue state and mechanical property.
To achieve these goals, the present invention adopts following technical scheme, a kind of Ultrafast cooling device for large rolled H-shaped steel, be characterized in, comprise that top is fixed with the track bearing of cross moving track, cooling unit with cooling stand is set on cross moving track, below the cooling stand, is provided with traversing roller; Described cooling unit comprises transmission side cooling unit and fore side cooling unit, transmission side cooling unit and fore side cooling unit are symmetrical, and described transmission side cooling unit and fore side cooling unit comprise side nozzle unit, top nozzle unit respectively and have the side shield of groove; Described side nozzle unit comprises the side nozzle of the side nozzle casing and the side that sets within it, and described side shield is fixed on the cooling stand, and the side nozzle casing is fixed on the outside of side shield, and side nozzle is corresponding with the groove of side shield; Described top nozzle unit is arranged on the top of side shield inboard, and the motor base of rollgang is provided with down nozzle unit, and described top nozzle unit, side nozzle unit and following nozzle unit are connected with feed pipe respectively; On feed pipe, be respectively arranged with electromagnetic flowmeter, pressure sensor and pneumatic open and close valve, described electromagnetic flowmeter, pressure sensor and pneumatic open and close valve are connected with computer control system respectively, are respectively arranged with temperature measurer in the porch and the exit of this Ultrafast cooling device.
In order to realize the traversing of cooling unit, below the cooling stand of transmission side cooling unit and fore side cooling unit, be respectively arranged with sideslip oil cylinder or electric pushrod, the cylinder body of sideslip oil cylinder or electric pushrod is fixed on the ground of production scene, and the head earrings of sideslip oil cylinder or electric pushrod is connected the below of cooling stand.
Described top nozzle unit is connected with main-supply by minute feed pipe respectively with the side nozzle unit, and described nozzle unit down directly is connected with main-supply.
Feed pipe was connected with main-supply by metal hose in described minute.
In order to prevent that cooling water flow to the finished product universal mill, is provided with the water under high pressure blow device in the porch of Ultrafast cooling device; Described water under high pressure blow device comprises the feed pipe with nozzle, and described feed pipe is connected with main-supply.
In order to prevent that cooling water from remaining in the upper surface of H shaped steel, is provided with water under high pressure and compressed air blowing cleaner in the exit of Ultrafast cooling device; Described water under high pressure and compressed air blowing cleaner comprise feed pipe with nozzle and the air supply pipe with nozzle, and feed pipe is connected with main-supply, and air supply pipe is connected with compressed air line.
Cause Ultrafast cooling device to damage in order to prevent H shaped steel nose, the place ahead at the Ultrafast cooling device inlet is provided with fender restraint beam, the place ahead at fender restraint beam is provided with hot metal detector, and described hot metal detector is connected with computer control system.
Cause inhomogeneous cooling even in order to prevent H shaped steel from cooling procedure, departing from the center, be provided with wedge-shaped catch in the inboard of side shield.
In order to guarantee the uniformity of H shaped steel cooling, the nozzle of described top nozzle unit, side nozzle unit and following nozzle unit all adopts fan nozzle.
Beneficial effect of the present invention:
By Ultrafast cooling device for large rolled H-shaped steel of the present invention, but the H shaped steel that will have higher temperature within a short period of time is cooled to lower temperature, utilize phase transformation strengthening, precipitation strength and refined crystalline strengthening mechanism, obtain having the H shaped steel structural state of small grains, finally make H shaped steel have the favorable tissue state, thereby its comprehensive mechanical property is significantly improved.By the product that Ultrafast cooling device for large rolled H-shaped steel of the present invention is produced, its every performance indications satisfy standard GB 11263-1998 " hot rolled H-shaped and subdivision T-steel " and concerned countries or area to H shaped steel tissue and performance demands comprehensively.For enterprise has reduced production cost, improved economic benefit.
Description of drawings:
Fig. 1 is the installation site schematic diagram of Ultrafast cooling device of the present invention;
Fig. 2 is the overall structure schematic diagram of Ultrafast cooling device of the present invention;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is the B-B cutaway view of Fig. 2;
Among the figure, 1-finished product universal mill, 2-Ultrafast cooling device, 3-rollgang, the 4-hot saw, 5-cold bed, 6-hot metal detector, 7-water under high pressure and compressed air blowing cleaner, 8-water under high pressure blow device, 9-fender restraint beam, the 10-cross moving track, 11-track bearing, the traversing roller of 12-, 13-cools off stand, the pneumatic open and close valve of 14-, 15-side nozzle casing, the 16-wedge-shaped catch, 17-fore side cooling unit, 18-side nozzle unit, the 19-cooling unit, nozzle unit under the 20-, 21-H shaped steel, 22-top nozzle unit, 23-side shield, 24-side nozzle, 25-transmission side cooling unit, the 26-feed pipe, 27-divides feed pipe, the 28-pressure sensor, 29-electromagnetic flowmeter, 30-main-supply, the 31-ground, 32-sideslip oil cylinder or electric pushrod, 33-cylinder body, 34-head earrings, 35-base, 36-motor.
The specific embodiment:
Shown in Fig. 2,3,4, a kind of Ultrafast cooling device for large rolled H-shaped steel, comprise that top is fixed with the track bearing 11 of cross moving track 10, the cooling unit 19 with cooling stand 13 is set on cross moving track 10, below cooling stand 13, be provided with traversing roller 12; Described cooling unit 19 comprises transmission side cooling unit 25 and fore side cooling unit 17, transmission side cooling unit 25 is symmetrical with fore side cooling unit 17, and described transmission side cooling unit 25 and fore side cooling unit 17 comprise side nozzle unit 18, top nozzle unit 22 respectively and have the side shield 23 of groove; Described side nozzle unit 18 comprises the side nozzle 24 of the side nozzle casing 15 and the side that sets within it, and described side shield 23 is fixed on the cooling stand 13, and side nozzle casing 15 is fixed on the outside of side shield 23, and side nozzle 24 is corresponding with the groove of side shield 23; Described top nozzle unit 22 is arranged on the top of side shield 23 inboards, and motor 36 bases 35 of rollgang 3 are provided with down nozzle unit 20, and described top nozzle unit 22, side nozzle unit 18 and following nozzle unit 20 are connected with feed pipe 26 respectively; On feed pipe 26, be respectively arranged with electromagnetic flowmeter 29, pressure sensor 28 and pneumatic open and close valve 14, described electromagnetic flowmeter 29, pressure sensor 28 and pneumatic open and close valve 14 are connected with computer control system respectively, are respectively arranged with temperature measurer in the porch and the exit of this Ultrafast cooling device 2.
In order to realize the traversing of cooling unit 19, below the cooling stand 13 of transmission side cooling unit 25 and fore side cooling unit 17, be respectively arranged with sideslip oil cylinder or electric pushrod 32, the cylinder body 33 of sideslip oil cylinder or electric pushrod 32 is fixed on the ground 31 of production scene, and the head earrings 34 of sideslip oil cylinder or electric pushrod 32 is connected the below of cooling stand 13.
Described top nozzle unit 22 is connected with main-supply 30 by minute feed pipe 27 respectively with side nozzle unit 18, and described nozzle unit 20 down directly is connected with main-supply 30.
In order to prevent that cooling water flow to finished product universal mill 1, is provided with water under high pressure blow device 8 in the porch of Ultrafast cooling device 2; Described water under high pressure blow device 8 comprises the feed pipe with nozzle, and described feed pipe is connected with main-supply 30.
In order to prevent that cooling water from remaining in the upper surface of H shaped steel 21, be provided with water under high pressure and compressed air blowing cleaner 7 in the exit of Ultrafast cooling device 2; Described water under high pressure and compressed air blowing cleaner 7 comprise feed pipe with nozzle and the air supply pipe with nozzle, and feed pipe is connected with main-supply 30, and air supply pipe is connected with compressed air line.
Cause Ultrafast cooling device 2 to damage in order to prevent H shaped steel 21 noses, the place ahead at Ultrafast cooling device 2 inlets is provided with fender restraint beam 9, be provided with hot metal detector 6 in the place ahead of fender restraint beam 9, described hot metal detector 6 is connected with computer control system.
Cause inhomogeneous cooling even in order to prevent H shaped steel 21 from cooling procedure, departing from the center, be provided with wedge-shaped catch 16 in the inboard of side shield 23.
In order to guarantee the uniformity of H shaped steel 21 coolings, the nozzle of described top nozzle unit 22, side nozzle unit 18 and following nozzle unit 20 all adopts fan nozzle.
As shown in Figure 1, during use, Ultrafast cooling device 2 of the present invention is installed in the rear that finished product universal mill 1 exports, H shaped steel 21 is after rolling out finished product universal mill 1, directly enter Ultrafast cooling device 2 of the present invention and cool off, then by rollgang 3 operations.After reaching hot saw 4, cut scale, run at last on the cold bed 5 and cool off, up to room temperature.
Embodiment:
Behind the H of certain factory shaped steel finished product universal mill, installed cover Ultrafast cooling device of the present invention additional, its installation site as shown in Figure 1, this Ultrafast cooling device adopts water spray type of cooling.The finished size of rolling H shaped steel is HM390 * 300 * 16 * 10, and steel grade is Q345B.Blank is rolled 5 passages at two roller blooming mills earlier, then in rolling 5 passages of the universal roughing mill unit of UEU form, at last in finished product universal rolling 1 passage.
H shaped steel enters Ultrafast cooling device of the present invention and cools off after the finished product universal mill is rolling, there are two nozzles every group of top nozzle unit in the Ultrafast cooling device, cool off the R angle, top and the epiplastron of H shaped steel respectively, nozzle unit has three nozzles under every group, cools off the R angle and the bottom web of the both sides, bottom of H shaped steel respectively; The side nozzle unit is traversing according to rolling specification to be the position of 890mm to spacing, and with roll line centering.
The top nozzle unit of present embodiment has been opened 3 pairs, and following nozzle unit has been opened 12 pairs, and the side nozzle unit has been opened 16 pairs, and every offside nozzle unit has 20 nozzles.
This moment, the Total Water of whole cooling device was 800m3/h, and hydraulic pressure is 1.1MPa.
The tapping temperature of blank is 1100 ℃, through 11 passages rolling after, the outlet temperature of finished frame is 820 ℃ on the edge of a wing, 780 ℃ of webs, mill speed is 3.5m/s, the length of Ultrafast cooling device is 13.5m.After supper-fast cooling, the flange surfaces temperature of H shaped steel is 510 ℃, and the upper surface temperature of web is 480 ℃.
Be cooled to room temperature, the structure property of H shaped steel is tested, the mechanical performance index of H shaped steel is yield strength 468MPa, tensile strength 570MPa, and percentage elongation is 22%.With the same specification that does not carry out supper-fast cooling, compare with steel grade H shaped steel product, intensity has improved 80MPa nearly, and percentage elongation has reduction slightly, metallographic structure is compact grained ferrite+pearlite+a small amount of bainite, the average rank of grain size is 9 grades, and performance indications satisfy standard GB 11263-1998 " hot rolled H-shaped and subdivision T-steel " fully to H shaped steel performance demands.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010101084218A CN101804422B (en) | 2010-02-10 | 2010-02-10 | Ultrafast cooling device for large rolled H-shaped steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101084218A CN101804422B (en) | 2010-02-10 | 2010-02-10 | Ultrafast cooling device for large rolled H-shaped steel |
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| CN101804422A CN101804422A (en) | 2010-08-18 |
| CN101804422B true CN101804422B (en) | 2011-10-26 |
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| CN102029296B (en) * | 2010-09-30 | 2014-10-08 | 安徽工业大学 | Method for fast cooling low-carbon hot-rolling small H-shaped steel |
| CN102327906A (en) * | 2011-07-19 | 2012-01-25 | 东北大学 | Cooling system after rolling with super-fast cooling technology |
| CN102363161B (en) * | 2011-10-21 | 2013-07-10 | 东北大学 | Ultrafast cooling control method for H-shaped steel |
| CN102517430B (en) * | 2011-12-15 | 2013-04-03 | 东北大学 | Strong wind cooling system for medium plate heat treatment |
| CN103042054A (en) * | 2013-01-25 | 2013-04-17 | 中冶赛迪工程技术股份有限公司 | Cooling and bending preventing device for specially-shaped steel and process method |
| CN103357678B (en) * | 2013-08-02 | 2015-09-23 | 莱芜钢铁集团有限公司 | Casting H profile steel cooling device |
| CN103551388B (en) * | 2013-11-06 | 2015-09-23 | 东北大学 | A kind of ultrafast cool equipment protective device |
| CN103935679B (en) * | 2014-04-30 | 2016-08-17 | 嘉兴鸿利机械有限公司 | Conveying device |
| CN105798071B (en) * | 2016-05-26 | 2018-03-13 | 中冶南方工程技术有限公司 | Shape rolling mill on-line cooling device |
| CN106001135B (en) * | 2016-05-26 | 2018-03-13 | 中冶南方工程技术有限公司 | Shape rolling mill centering cooling device |
| CN111664615B (en) * | 2020-06-16 | 2022-02-01 | 安徽伟辰钢结构有限公司 | H-shaped steel production line |
| CN113714299B (en) * | 2021-08-30 | 2023-10-24 | 攀钢集团攀枝花钢钒有限公司 | Rolling mill roll cooling method |
| CN114058820A (en) * | 2021-10-28 | 2022-02-18 | 马鞍山钢铁股份有限公司 | QST (QST) controlled cooling system for thick and heavy hot-rolled H-shaped steel after rolling |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5259229A (en) * | 1990-06-21 | 1993-11-09 | Nippon Steel Corporation | Apparatus for cooling thin-webbed H-beam steel |
| US6003330A (en) * | 1996-09-14 | 1999-12-21 | Sms Schloemann-Siemag Aktiengesellschaft | Device for water cooling of rolled steel sections |
| US6170284B1 (en) * | 1997-12-23 | 2001-01-09 | Sms Schloemann-Siemag Aktiengesellschaft | Apparatus for the controlled cooling of hot-rolled sections, particularly beams, directly from the rolling heat |
| CN1583305A (en) * | 2004-05-28 | 2005-02-23 | 东北大学 | Controlled cooling method after H-shape steel rolling |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62174326A (en) * | 1986-01-27 | 1987-07-31 | Kawasaki Steel Corp | Flange cooler for shape material |
| JPS62248507A (en) * | 1986-04-22 | 1987-10-29 | Kawasaki Steel Corp | Flange cooler for h beam |
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2010
- 2010-02-10 CN CN2010101084218A patent/CN101804422B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5259229A (en) * | 1990-06-21 | 1993-11-09 | Nippon Steel Corporation | Apparatus for cooling thin-webbed H-beam steel |
| US6003330A (en) * | 1996-09-14 | 1999-12-21 | Sms Schloemann-Siemag Aktiengesellschaft | Device for water cooling of rolled steel sections |
| US6170284B1 (en) * | 1997-12-23 | 2001-01-09 | Sms Schloemann-Siemag Aktiengesellschaft | Apparatus for the controlled cooling of hot-rolled sections, particularly beams, directly from the rolling heat |
| CN1583305A (en) * | 2004-05-28 | 2005-02-23 | 东北大学 | Controlled cooling method after H-shape steel rolling |
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