CN102061363A - Direct quenching device for medium plate and quenching process thereof - Google Patents
Direct quenching device for medium plate and quenching process thereof Download PDFInfo
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- CN102061363A CN102061363A CN 201010560843 CN201010560843A CN102061363A CN 102061363 A CN102061363 A CN 102061363A CN 201010560843 CN201010560843 CN 201010560843 CN 201010560843 A CN201010560843 A CN 201010560843A CN 102061363 A CN102061363 A CN 102061363A
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Abstract
The invention provides a direct quenching device for a medium plate and a quenching process thereof. The device comprises a high-level water tank, a water quantity distributor, upper quenching coolers, upper accelerating coolers, upper fine-tuning coolers, lower quenching coolers, lower accelerating coolers, lower fine-tuning coolers, edge shielding devices, side spraying devices and a purging device. The quenching method comprises the following steps: carrying out controlled rolling, and controlling the finished rolling temperature at 780-850 DEG C; calculating the speed of a roller way, the group number of the coolers to be started, the water quantity of the coolers and the edge shielding quantity according to the plate thickness and the steel grade by utilizing a computer, and then transferring the plate to a controlled cooling area according to a predetermined speed; and starting the coolers and the corresponding side spraying devices according to the position sequence of the plate, wherein, the finished cooling temperature range is 150-450 DEG C. The direct quenching device has the characteristics of low fabrication cost, and fast and uniform cooling speed, and can stably produce the flat quenching plate with the quenching thickness of 9-60mm, and is simple and convenient in maintenance; and compared with the traditional out-line quenching method, the quenching process provided by the invention has the characteristics of short process flow and less energy consumption.
Description
Technical field
The invention belongs to the process for producing steel and iron field, particularly a kind of device of steel plate direct quenching and technology thereof.
Background technology
Direct quenching is meant steel when hot rolling stops being in austenite structure, handles making the rolled piece tissue produce martensite transformation and bainite by chilling, and crystal grain thinning plays and improves the effect of material flexible.Relative reheat quenching technology, direct quenching technology is omitted the reheat austenitization, and save energy has also been simplified technology.It may be noted that the direct quenching here has not been that what is called in the prior heat treatment process is quenched, it is the online application of inferior hardening and tempering process.
Follow-up heat treatment process at controlled rolling and controlled chilling, domestic high-strength steel generally adopts reheat quenching+tempering (being modifier treatment) mode to produce, this production technique has not only increased facility investment, and operation is various, production cycle is long, the alloying cost and the production process cost of steel increase greatly simultaneously, have greatly restricted the raising of economic benefit.The domestic report that the non-modifier treatment explained hereafter high tensile steel plate of employing is also arranged, " non-quenching and tempering, high of 1100Mpa level and production method thereof " disclosed as Chinese patent application in 2006 (application number is 2006100519362), the deficiency of this patent is also to need to carry out after the hot rolling cold-rolling process of heavy reduction, the technical process complexity is invested huge.And for example Chinese patent application in 2008 (application number is 200810013604.4) has been announced " a kind of direct quenching producing and manufacturing technique of high toughness thick steel plate ", this patent adopts the water curtain type of cooling, only suitable finished product thickness is the Plate Steel of 20～50mm, steel plate for thin specification is difficult to solve because the even plate shape planeness problem of bringing of inhomogeneous cooling, and the composition to steel plate requires harshness, is difficult to generally promote at the steel alloy production field.2009 Chinese patent application (application number 2008101960402) " the Steckel mill press quenching is produced the technology of high-strength quenched and tempered steel " disclosed, it is the modified plate of 12mm-35mm that this patent only is fit to Steckel mill press quenching production thickness, processing unit is arranged and is confined to stove volume production line, and limited being difficult to of cooling facility for laminar flow cooling power realizes thickness is realized press quenching greater than the steel plate of 35mm.And for example this patent of Chinese patent application (application number 200910091825.8) " a kind of direct quenching technology of suitable different thickness high strength steel plate " in 2009 adopts cooling facility for laminar flow to realize press quenching, the water yield of lower collector pipe is fixing on thick cold section of the cooling zone and the fine cold-leg can not free adjustment, every group of collector only contains one and puts lower nozzle, jet density is low, the impact zone area is little, a little less than the cooling power, be difficult to realize big speed of cooling, produce high-strength steel for press quenching and have certain limitation.
Summary of the invention
For addressing the above problem, purpose of the present invention provides a kind of and has save energy, shortened process, enhances productivity, cooling power is strong, cooling uniformity good, Quenching Sheet shape is straight, safeguard simple and convenient, water quality requirement is low, equipment manufacturing cost is low, the device and the technology thereof of the steel plate direct quenching of the universal use of suitable Heavy Plate Production line.
Technical scheme of the present invention is: a kind of device of steel plate direct quenching, comprise the elevated tank and the water yield divider that are used to supply water, it is characterized in that, described water yield divider by water-supply line respectively be installed in the water cooler support on quenching on water cooler, quicken cooling go up water cooler in water cooler, the accurate adjustment and be installed in water cooler under the quenching between the roller-way, quicken cooling down under water cooler, the accurate adjustment water cooler be connected, edge part shading device and side-spraying device are formed, and series connection is provided with manual valve, variable valve, under meter and pneumavalve on the described water-supply line; Water cooler in the described quenching, quicken cooling and go up that both sides, water cooler bottom are equipped with the edge part shading device in water cooler and the accurate adjustment, be used to block the water coolant that may drop to steel plate limit portion, improve cooling uniformity, improve Quenching Sheet shape, described roller-way both sides arranged crosswise side-spraying device.
Further, water cooler is made up of water-in flange, stainless steel water jet standpipe, water main, back up pad in the described quenching; Wherein, described water main connects by described water-in flange and water-supply line pipe, and the stainless steel water jet standpipe is welded on the described water main main body, and back up pad is welded on the water main bottom and is used for fixing described stainless steel water jet standpipe.
Further, water cooler is made up of water-in flange, mudhole, damper tube, maintenance flange, casing, spout hole under the described quenching; Wherein, described damper tube connects by water-in flange and described water-supply line pipe, described damper tube is fixedly welded in the described casing, establish described mudhole on the two ends lower surface of described casing, upper surface is provided with described spout hole, described mudhole and described spout hole all with described damper tube UNICOM, the inside, two ends of described damper tube is provided with described maintenance flange.
Further, the last water cooler of described acceleration cooling is made up of water-in flange, stainless steel water jet standpipe, water main, back up pad.Wherein, described water main connects by described water-in flange and described water-supply line pipe, and described stainless steel water jet standpipe is welded on the described water main main body, and described back up pad is welded on described water main bottom and is used for fixing described stainless steel water jet standpipe.
Further, described edge part shading device is made up of reducing motor, chain, supporting structure, sprocket wheel and water eliminator, and described reducing motor is by described chain and described chain sprocket drive, and described water eliminator is installed on the described chain.
Further, described side-spraying device is made up of casing, nozzle; Casing is fixed on the roller-way both sides by the bolt arranged crosswise, and nozzle is installed on the casing on four angles, and nozzle angle is adjusted to meet the needs of production according to the workman, arranges a cover side-spraying device behind every group of water cooler.
Further, blow device is installed in the outlet position of described quench systems, and blow device is used to remove the water coolant of surface of steel plate of having quenched, prevents the deterioration of plate shape; Described blow device is made up of inlet pipe, flange, strut member, nozzle, main tracheae, and described main tracheae installs and fixes by described strut member, and described nozzle is installed on the described main tracheae, described inlet pipe be connected with described main tracheae by flange; The medium of described blow device is a pressurized air, pressure 〉=0.4Mpa.
Further, water cooler is that water cooler is one group under one group and six the described quenchings in two described quenchings; It is one group that water cooler is gone up in two described acceleration coolings, and water cooler is one group under six described acceleration coolings; Water cooler is one group in the described accurate adjustment, and water cooler is one group under three described accurate adjustments.
Further, described quench systems is made up of quench zone, acceleration cooling zone, three zones, accurate adjustment district, is made up of quenching cooler, acceleration water cooler, accurate adjustment water cooler respectively.
Another object of the present invention provides the technology of the device of above-mentioned steel plate direct quenching, comprises following concrete steps:
1. by two stage rolling billet rolling is become finished product thickness, finishing temperature is controlled at 780 ℃～850 ℃;
2. the control computer of direct quenching device is according to thickness, width, length and the steel grade of described steel billet, after calculating rollgang speed, each water cooler water yield, need are opened the group number and edge part shading amount of water cooler, steel plate is sent into direct quenching device internal cooling according to predetermined speed;
3. with the direct quenching device steel plate is cooled to 150 ℃-450 ℃ temperature, and purges the remaining water coolant of surface of steel plate with the air-blowing sweeping device of control outlet position, cold-zone.
Beneficial effect of the present invention is:
(1) adopt and to roll back direct quenching technology, saved the operation that reheat quenches under the similar steel plate, with short production cycle, cost is low, has improved production efficiency, save energy.
(2) adopt the press quenching device, be divided into 3 cooled regions, quench zone and quicken on every group of the cooling zone water cooler and contain that water cooler contains 6 shower nozzles under two shower nozzles, every group, the water cooler impact zone is big, cooling uniformity is good, can reach bigger speed of cooling and final cooling temperature regulation range, makes in the steel plate direct quenching process cooling more even, the steel-plate shape that obtains is more easily controlled, and the performance of steel plate is more even.
(3) side-spraying device is evenly arranged in the rolling line both sides, side spraying nozzle reasonable Arrangement, and cooling heat transferring effect when having improved steel plate direct quenching greatly can reach bigger rate of cooling.
(4) adopt the edge part shading device to block the water coolant that may drop to steel plate limit portion, prevent that limit portion is cold excessively, improve the horizontal refrigerative homogeneity of steel plate, improve Quenching Sheet shape.
(5) the air-blowing sweeping device that adopts controlled cooling device to export is removed the water coolant of the surface of steel plate that quenched, and prevents that plate shape from worsening.
Description of drawings:
Fig. 1 is the structural representation of the device of a kind of steel plate direct quenching of the present invention.
Fig. 2 is the structural representation of water cooler in the quenching of the present invention.
Fig. 3 is the right view of water cooler in the quenching of the present invention.
Fig. 4 is the structural representation that water cooler is gone up in acceleration cooling of the present invention.
Fig. 5 is the right view that water cooler is gone up in acceleration cooling of the present invention.
The structural representation of water cooler under Fig. 6 quenching of the present invention.
Fig. 7 is the right view of water cooler under the quenching of the present invention.
Fig. 8 is the structural representation of shading unit of the present invention.
Fig. 9 is the structural representation of side-spraying device of the present invention.
Figure 10 is the right view of side-spraying device of the present invention.
Figure 11 is the structural representation of blow device of the present invention.
Figure 12 is the structure of nozzle synoptic diagram of blow device of the present invention.
Embodiment
Below in conjunction with specific embodiment technical scheme of the present invention is described further.
Be illustrated in figure 1 as the structural representation of a kind of steel plate direct quenching of the present invention system, this system is by elevated tank 1, water yield divider 2, water cooler 7 in the quenching, water cooler 8 down quenches, quicken cooling and go up water cooler 9, quicken cooling water cooler 10 down, water cooler 12 compositions under water cooler 11 and the accurate adjustment in the accurate adjustment, wherein, elevated tank 1 is arranged at water yield divider 2 tops, water cooler 7 is one group and is connected with water yield divider 2 by water-supply line in 2 quenchings, water cooler 8 is one group and is connected with water yield divider 2 by water-supply line under 6 quenchings, 2 quicken cooling go up water cooler 9 be one group is connected with water yield divider 2 by water-supply line and 6 acceleration cool off under water cooler be one group and be connected by water-supply line water yield divider 2, in each accurate adjustment under water cooler and per 3 accurate adjustments water cooler each supply water by 1 cover water-supply line, on the water-supply line all series connection manual valve 3 is set, variable valve 4, under meter 5 and pneumavalve 6.
Quench as Fig. 2, the present invention shown in Figure 3 and to go up the structural representation of water cooler.Water cooler 7 is made up of water-in flange 7-1, U-shaped water cooler 7-2, water main 7-3, back up pad 7-4 in the quenching.Described water main 7-3 connects by described water-in flange 7-1 and water-supply line pipe, and 4 row's stainless steel water jet standpipe 7-2 are welded on the described water main 7-3 main body, and back up pad 7-4 is welded on water main 7-3 bottom and is used for fixing 4 row's stainless steel water jet standpipe 7-2.
Go up the structural representation of water cooler as Fig. 4, acceleration cooling of the present invention shown in Figure 5.. the acceleration cooling is gone up water cooler 9 and is made up of water-in flange 9-1, stainless steel water jet standpipe 9-2, water main 9-3, back up pad 9-4.Water main 9-3 connects by water-in flange 9-1 and water-supply line pipe, and 2 row's stainless steel water jet standpipe 9-2 are welded on the water main 9-3 main body, and back up pad 9-4 is welded on water main 9-3 bottom and is used for fixing 2 row's stainless steel water jet standpipe 9-2.
Structural representation as water cooler under Fig. 6, the quenching of the present invention shown in Figure 7.Water cooler 8 is made up of water-in flange 8-1, mudhole 8-2, damper tube 8-3, maintenance flange 8-4, casing 8-5, spout hole 8-6 under quenching; Damper tube 8-3 connects by water-in flange 8-1 and water-supply line pipe, damper tube 8-3 is fixedly welded in the casing 8-5, mudhole 8-2 is installed on two ends lower surface and the damper tube 8-3 UNICOM of casing 8-5, maintenance flange 8-4 is positioned at the inside, two ends of damper tube 8-3, and spout hole 8-6 is positioned at upper surface and the damper tube 8-3 UNICOM of casing 8-5.
The structural representation of edge part shading device of the present invention as shown in Figure 8.Edge part shading device 13 be fixed on and quench go up water cooler 7, quicken cooling go up water cooler 11 in water cooler 9 and the accurate adjustment below, edge part shading device 13 is made up of reducing motor 13-1, chain 13-2, sprocket wheel 13-3, movable pulley 13-4, water eliminator 13-5, guide rail 13-6, described reducing motor 13-1 drives described chain 13-2 by described sprocket wheel 13-3, described water eliminator 13-5 is connected with described chain 13-2, described chain 13-2 drives described water eliminator 13-5 when moving, and described water eliminator 13-5 slides on described guide rail 13-6 by described movable pulley 13-4.
Structural representation as Fig. 9, side-spraying device of the present invention shown in Figure 10.At roller-way both sides arranged crosswise side-spraying device 14, described side-spraying device 14 is made up of casing 14-1, nozzle 14-2.Casing 14-1 is fixed on the roller-way both sides by the bolt arranged crosswise, and nozzle 14-2 is installed on last four angles of casing 14-1, and nozzle 14-2 angle is adjusted to meet the needs of production according to the workman.
Structural representation as Figure 11, blow device of the present invention shown in Figure 12.Blow device 15 is made up of inlet pipe 15-1, flange 15-2, strut member 15-3, nozzle 15-4 and main tracheae 15-5, main tracheae 15-5 installs and fixes by described strut member 15-3, nozzle 15-4 is installed on the described main tracheae 15-5, inlet pipe 15-1 be connected with main tracheae 15-5 by flange 15-2.
The finished product steel plate that comes out from milling train by roller-way 16, enter the controlled chilling zone of this device, the controlled chilling zone is divided into 3 cooling zones, being respectively quenches goes up the quench zone that water cooler 8 is formed under water cooler 7 and the quenching, quickening cooling goes up water cooler 9 and quickens the cooling cold sperm district that water cooler 12 is formed under water cooler 11 and the accurate adjustment in the main cold-zone formed of water cooler 10 and the accurate adjustment down, the average cooling rate of refrigerating unit is 10 ℃/s～50 ℃/s, direct quenching roller table speed scope is 0.4-2m/s, the even water quench of ejection, wherein, water cooler is provided with edge part shading device 13 on all, block the water coolant that may drop to steel plate limit portion, improve cooling uniformity, improve Quenching Sheet shape, arranged crosswise is at the side-spraying device 14 of roller-way 16 both sides, improve the cooling performance of quenched nickelclad, adopt the plate shape after different water yield controls of water cooler up and down and blow device guarantee steel plate quenching, the outlet of cooling zone arranges that blow device 15 is beneficial to the water coolant of removing the surface of steel plate that quenched, prevents that plate shape from worsening.
Steel plate upper and lower refrigerative jet density is as shown in the table when the water cooler number of each cooling zone of press quenching device and cooling:
The technology of this steel plate direct quenching device comprises following concrete steps:
At first, plate of moderate thickness is controlled at 780 ℃～850 ℃ through the controlled rolling of two stages with finishing temperature, and steel plate is delivered to the direct quenching device through rollgang, and the roller-way spacing of cooling roller bed is: 380-600mm; The process control computer of quenching device calculates group number, each water cooler water yield of control cold-zone rollgang speed, water cooler, the masking amount of edge part shading device according to steel plate thickness and steel grade, the edge part shading device is by reducing motor, chain, rest on the predetermined position with water eliminator, steel plate is sent into the control cold-zone according to predetermined speed, open water cooler and corresponding side-spraying device according to steel plate in the sequence of positions of cooling zone, steel plate final cooling temperature scope is 150 ℃-450 ℃, controls cold outlet and blow device is set blows cooling off and finish the residuary water of surface of steel plate.
Embodiment 1
Steel grade: Q550D
Rolling technology: slab thickness: 150mm, the fs finishing temperature:＞1000 ℃, intermediate blank thickness: 60mm, 920 ℃ of subordinate phase start rolling temperatures, finishing temperature: 800 ℃, finished product thickness: 20mm.
Direct quenching technology: thickness is after the steel plate of 20mm goes out finishing mill, and the control computer steel billet is sent into the control cold-zone according to predetermined speed, opens several 10 groups of cooler package, water cooler flow 320m in the setting
3/ h, roller table speed 1.5m/s, 22 ℃/s of speed of cooling, 400 ℃ of final cooling temperatures, make full use of the hot water of side-spraying device cleaning surface of steel plate, improve cooling performance, utilize blow device, limit the control cold-zone, prevent of the inhomogeneous cooling of surface of steel plate residuary water, control steel plate cooling template steel plate.
Temper: the direct quenching steel plate is through 630 ± 10 ℃ of tempering.Shown in the mechanical property of steel plate sees the following form after the tempering:
Steel grade: Q690D
Rolling technology: slab thickness: 250mm, the fs finishing temperature:＞1000 ℃, intermediate blank thickness: 90mm, 940 ℃ of subordinate phase start rolling temperatures, finishing temperature is 850 ℃, finished product thickness: 30mm.
Direct quenching technology: thickness is after the steel plate of 30mm goes out finishing mill, and control computer is sent into the control cold-zone with steel billet according to predetermined speed, opens several 13 groups of cooler package, last water cooler flow 320m
3/ h, roller table speed 1.5m/s, 20 ℃/s of speed of cooling, 420 ℃ of final cooling temperatures, make full use of the hot water of side-spraying device cleaning surface of steel plate, improve cooling performance, utilize blow device, limit the control cold-zone, prevent of the inhomogeneous cooling of surface of steel plate residuary water, control steel plate cooling template steel plate.
Temper: the direct quenching steel plate is through 610 ± 10 ℃ of tempering.Shown in the mechanical property of steel plate sees the following form after the tempering:
Example 3
Steel grade: Q800
Rolling technology: slab thickness: 250mm, the fs finishing temperature:＞1000 ℃, intermediate blank thickness: 75mm, 900 ℃ of subordinate phase start rolling temperatures, finishing temperature is 780 ℃, finished product thickness: 25mm.
Direct quenching technology: thickness is after the steel plate of 25mm goes out finishing mill, and control computer is sent into the control cold-zone with steel plate according to predetermined speed, opens several 15 groups of cooler package, last water cooler flow 320m
3/ h, roller table speed 1.3m/s, 20 ℃/s of speed of cooling, 400 ℃ of final cooling temperatures, make full use of the hot water of side-spraying device cleaning surface of steel plate, improve cooling performance, utilize blow device, limit the control cold-zone, prevent of the inhomogeneous cooling of surface of steel plate residuary water, control steel plate cooling template steel plate.
Temper: the direct quenching steel plate is through 600 ± 5 ℃ of tempering.Shown in the mechanical property of steel plate sees the following form after the tempering:
Claims (9)
1. the device of a steel plate direct quenching, comprise the elevated tank (1) and the water yield divider (2) that are used to supply water, it is characterized in that, described water yield divider (2) by water-supply line respectively with the quenching that is installed on the water cooler support on water cooler (7), quicken cooling and go up water cooler (9), water cooler in the accurate adjustment (11) and be installed in water cooler (8) under the quenching between the roller-way (16), quicken cooling water cooler (10) down, water cooler under the accurate adjustment (12) connects, and series connection is provided with manual valve (3) on the described water-supply line, variable valve (4), under meter (5) and pneumavalve (6); Water cooler (11) both sides, bottom are equipped with edge part shading device (13) in water cooler in the described quenching (7), the last water cooler (9) of acceleration cooling and the accurate adjustment, be used to block the water coolant that drops to steel plate limit portion, improve cooling uniformity, improve Quenching Sheet shape, described roller-way (16) both sides arranged crosswise side-spraying devices (14).
2. the device of steel plate direct quenching according to claim 1 is characterized in that, water cooler in the described quenching (7) is made up of water-in flange (7-1), stainless steel water jet standpipe (7-2), water main (7-3), back up pad (7-4); Wherein, described water main (7-3) connects by described water-in flange (7-1) and described pipeline pipe, described stainless steel water jet standpipe (7-2) is welded on described water main (7-3) main body, and back up pad (7-4) is welded on water main (7-3) bottom and is used for fixing 4 row's stainless steel water jet standpipes (7-2).
3. the device of steel plate direct quenching according to claim 1, it is characterized in that water cooler under the described quenching (8) is made up of water-in flange (8-1), mudhole (8-2), damper tube (8-3), maintenance flange (8-4), casing (8-5), spout hole (8-6); Wherein, described damper tube (8-3) connects by water-in flange (8-1) and described water-supply line pipe, described damper tube (8-3) is fixedly welded in the described casing (8-5), establish described mudhole (8-2) on the two ends lower surface of described casing (8-5), upper surface is provided with described spout hole (8-6), described mudhole (8-2) and described spout hole (8-6) all with described damper tube (8-3) UNICOM, the inside, two ends of described damper tube (8-3) is provided with described maintenance flange (8-4).
4. the device of steel plate direct quenching according to claim 1 is characterized in that, described acceleration cooling is gone up water cooler (9) and is made up of water-in flange (9-1), stainless steel water jet standpipe (9-2), water main (9-3), back up pad (9-4); Wherein, described water main (9-3) connects by described water-in flange (9-1) and described water-supply line pipe, described stainless steel water jet standpipe (9-2) is welded on described water main (9-3) main body, and described back up pad (9-4) is welded on described water main (9-3) bottom and is used for fixing described stainless steel water jet standpipe (9-2).
5. the device of steel plate direct quenching according to claim 1, it is characterized in that: described edge part shading device (13) is by reducing motor (13-1), chain (13-2), sprocket wheel (13-3), movable pulley (13-4), water eliminator (13-5), guide rail (13-6) is formed, described reducing motor (13-1) drives described chain (13-2) by described sprocket wheel (13-3), described water eliminator (13-5) is connected with described chain (13-2), drive described water eliminator (13-5) during described chain (13-2) action, described water eliminator (13-5) is gone up at described guide rail (13-6) by described movable pulley (13-4) and is slided.
6. the device of steel plate direct quenching according to claim 1 is characterized in that: described side-spraying device (14) is made up of casing (14-1), nozzle (14-2); Wherein, described casing (14-1) is fixed on described roller-way (16) both sides by the bolt arranged crosswise, described nozzle (14-2) is installed on last four angles of described casing (14-1), the angle of described nozzle (14-2) is adjusted to meet the needs of production according to the workman, arranges one group of side-spraying device behind every group of water cooler.
7. the device of steel plate direct quenching according to claim 1, it is characterized in that, blow device (15) is installed in the outlet position of described quench systems, and described blow device (15) is used to remove the water coolant of surface of steel plate of having quenched, and prevents that plate shape from worsening; Described blow device (15) is made up of inlet pipe (15-1), flange (15-2), strut member (15-3), nozzle (15-4), main tracheae (15-5), described main tracheae (15-5) installs and fixes by described strut member (15-3), described nozzle (15-4) is installed on the described main tracheae (15-5), described inlet pipe (15-1) be connected with described main tracheae (15-5) by flange (15-2); Medium is a pressurized air, pressure 〉=0.4Mpa.
8. the device of steel plate direct quenching according to claim 1 is characterized in that, water cooler (7) is one group in two quenchings, and water cooler (8) is one group under six quenchings; It is one group that water cooler (9) is gone up in two acceleration coolings, and water cooler (10) is one group under six acceleration coolings; Water cooler (11) is one group in the accurate adjustment, and water cooler (12) is one group under three accurate adjustments.
9. the technology of the device of steel plate direct quenching according to claim 1 is characterized in that, its step comprises:
1) by two stage rolling billet rolling is become finished product thickness, finishing temperature is controlled at 780 ℃ ~ 850 ℃;
2) control computer of direct quenching device is according to thickness, width, length and the steel grade of described steel billet, after calculating rollgang speed, each water cooler water yield, need are opened the group number and edge part shading amount of water cooler, steel plate is sent into direct quenching device internal cooling according to predetermined speed;
3) with the direct quenching device steel plate is cooled to 150 ℃-450 ℃ temperature, and purges the remaining water coolant of surface of steel plate with the air-blowing sweeping device of control outlet position, cold-zone.
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|---|---|---|---|---|
| CN103484630A (en) * | 2013-09-03 | 2014-01-01 | 上海交通大学 | Device for preventing cracking of water quenching end surfaces of shaft alloy steel part |
| CN103849734A (en) * | 2012-12-06 | 2014-06-11 | 宝山钢铁股份有限公司 | Platy-based quenching device flow control method as well as detection and control device thereof |
| CN103333996B (en) * | 2013-07-12 | 2016-09-07 | 鞍钢股份有限公司 | A kind of quenching technical of superhigh intensity sea work steel E690 super-thick steel plate |
| CN110340618A (en) * | 2019-07-15 | 2019-10-18 | 广东毅马集团有限公司 | A kind of prestressing force PC rod iron assemble production line |
| CN111154967A (en) * | 2020-01-15 | 2020-05-15 | 北京科技大学 | Water hammer preventing method for medium plate quenching machine |
| CN112126753A (en) * | 2020-09-08 | 2020-12-25 | 东北大学 | Metal plate strip temperature measuring device and temperature control method for roller quenching machine |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879531A (en) * | 2010-05-31 | 2010-11-10 | 北京科技大学 | Hot rolled strip laminar cooling device capable of controlling cooled strip shape |
-
2010
- 2010-11-25 CN CN 201010560843 patent/CN102061363A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879531A (en) * | 2010-05-31 | 2010-11-10 | 北京科技大学 | Hot rolled strip laminar cooling device capable of controlling cooled strip shape |
Non-Patent Citations (1)
| Title |
|---|
| 《金属世界》 20100915 刘涛等 中厚板轧后控制冷却系统 第57-61页 1-9 , 第5期 2 * |
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Application publication date: 20110518 |