CN114378120A - Efficient cooling air cooling device for producing super-thick-wall seamless pipes - Google Patents
Efficient cooling air cooling device for producing super-thick-wall seamless pipes Download PDFInfo
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- CN114378120A CN114378120A CN202210168174.3A CN202210168174A CN114378120A CN 114378120 A CN114378120 A CN 114378120A CN 202210168174 A CN202210168174 A CN 202210168174A CN 114378120 A CN114378120 A CN 114378120A
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- 238000001816 cooling Methods 0.000 title claims abstract description 70
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000013072 incoming material Substances 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 abstract description 15
- 239000003638 chemical reducing agent Substances 0.000 abstract description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 9
- 239000010959 steel Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 3
- 238000009863 impact test Methods 0.000 abstract description 3
- 238000007664 blowing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 15
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000033764 rhythmic process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B2045/0212—Cooling devices, e.g. using gaseous coolants using gaseous coolants
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention provides a high-efficiency cooling air cooling device for producing an extra-thick-wall seamless pipe, which comprises a supporting table, a cold air device, a conveying track and a cooling tunnel formed by surrounding the conveying track; the conveying track is arranged on the supporting table, and the cold air equipment blows cold air into the cooling tunnel through the cold air pipeline for cooling; an incoming material sensing device is installed at the inlet of the cooling tunnel and used for detecting pipe materials, and a temperature measuring instrument is installed in the cooling tunnel and used for detecting the temperature of the pipe materials in real time; according to the invention, the high-pressure air system is used for blowing the pipe material to realize the cooling effect, the temperature of the pipe body is reduced from 1300-1100 ℃ to about 1000-900 ℃ due to the wall thickness difference of the pipe material, and the final rolling temperature after the stretch reducer is ensured to be about 850-700 ℃, so that the mechanical property, the tensile strength, the lower yield strength, the section elongation, the impact test and the like meet the technical requirements of the national standard GB/T8163-2018 seamless steel pipe for conveying fluid.
Description
Technical Field
The invention belongs to the technical field of seamless steel tube production devices, and particularly relates to a high-efficiency cooling air cooling device for producing an extra-thick-wall seamless tube.
Background
In the production process flow of the seamless steel tube, standard requirements are made on the comprehensive performance indexes of the steel tube product in various aspects such as the quality data, the outer diameter tolerance, the wall thickness tolerance, the bending degree of the tube body, the cutting slope of the tube end, the tensile strength, the yield strength, the section elongation, the impact test and the like. In order to implement the standard of GB/T8163-2018 for conveying seamless pipes for fluid to realize short-flow high-efficiency production, most hot-rolled steel pipe enterprises adopt a short-flow production mode to realize high yield and low consumption and reduce production cost of steel per ton at present. The production process mode comprises a penetrating process, a rolling process, a setting process, a correcting process, a penetrating process, a setting process, a correcting process and the like, wherein the penetrating process, the rolling process, the setting process, the correcting process, the penetrating process, the setting process, the correcting process and the like adopt short flows, the production process has the advantages that the temperature drop of a hollow billet and a pierced billet is avoided during the production of thin-walled pipes, the intermediate heat supplementing process is reduced, the production effect with high yield and low consumption is realized, the temperature of a pipe body is overhigh due to slow heat dissipation of the thick-walled pierced billet during the production of thick-walled pipes and ultrahigh temperature of a tension reducer, the final rolling temperature after the tension reducer is influenced, and the mechanical property of a seamless steel pipe is unqualified due to overhigh final rolling temperature. The existing solution is to reduce the production rhythm and make the pierced billet stay for a plurality of time periods before the stretch reducer, thus causing the defects of affecting the operation efficiency, promoting the ton steel cost and affecting the productivity, and causing the fault of the roller way dry oil lubricating system and the influence on the service life of the bearing and the motor of the roller way due to the high-temperature baking of the roller way after the rolling mill before the stretch reducer caused by the long-time high-temperature stay.
Disclosure of Invention
In order to solve the problems, the invention provides a high-efficiency cooling air cooling device for producing an extra-thick-wall seamless pipe, which comprises a supporting table, a cold air device, a conveying track and a cooling tunnel formed by surrounding the conveying track; the conveying track is arranged on the supporting table, and the cold air equipment blows cold air into the cooling tunnel through the cold air pipeline for cooling; an incoming material sensing device is installed at the inlet of the cooling tunnel and used for detecting pipe materials, and a temperature measuring instrument is installed in the cooling tunnel and used for detecting the temperature of the pipe materials in real time.
Preferably, the system also comprises a control system, and the regulating and controlling system of the cold air equipment, the speed control system of the conveying track, the incoming material sensing device and the temperature measuring instrument are electrically connected with the control system.
Preferably, install a plurality of wind ring in the cooling tunnel, it is provided with a plurality of nozzle to be the annular on the wind ring, the air outlet of cold air duct is linked together with the inner chamber of wind ring to blow out cold wind through the nozzle.
Preferably, the cold wind equipment is the air compressor machine, the wind pressure valve regulation and control system and the control system electric connection of air compressor machine to the control command of receiving control system, thereby control the start-stop and the wind speed of air compressor machine.
Preferably, the conveying track is a roller way formed by a plurality of conveying rollers, the conveying rollers are driven by a motor, and the motor is electrically connected with the control system.
Preferably, the incoming material sensing device is a heat sensing probe.
Preferably, the nozzle inclines to the exit of cooling tunnel, and the nozzle is 30 degrees with the planar contained angle that the wind ring is located.
Preferably, the table top of the support table inclines downwards at a certain angle along the direction from the feed inlet to the discharge outlet of the cooling tunnel.
Has the advantages that: in the prior art, the prior example of cooling the pierced billet by air cooling is not adopted before the pierced billet is fed into the stretch reducer, the high-pressure air system is used for blowing the pierced billet to realize the cooling effect, the temperature of the tube body is reduced from 1300-1100 ℃ to about 1000-900 ℃ due to the wall thickness difference of the pierced billet, and the final rolling temperature after the stretch reducer is ensured to be about 850-700 ℃, so that the mechanical property, the tensile strength, the yield strength, the section elongation, the impact test and the like meet the technical requirements of the national standard GB/T8163-2018 seamless steel tube for conveying fluid. Meanwhile, the inclined nozzle sweeps the oxide layer on the outer surface of the pipe material, so that the problem of pitted surface of the oxide layer on the surface of the pipe body in the rolling process of the stretch reducer is reduced; the control system can realize automatic control and use, improve the product quality and achieve higher efficiency; the slope setting of support mesa can assist the transport with the help of the gravity of pipe material self, can reduce the electric energy loss when carrying.
Drawings
Fig. 1 is a perspective view of a partial structure of the present invention.
Fig. 2 is a schematic structural view of the wind ring part of the present invention.
Fig. 3 is a top view of a portion of the structure of the present invention.
Fig. 4 is a schematic diagram of the overall structure of the invention.
In the figure: 1. a support table; 2, pipe material; 3. a conveying track; 4. cooling the tunnel; 5. a cold air duct;
6. a wind ring; 7. and (4) a nozzle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 4, the invention provides an efficient cooling air-cooling device for producing an ultra-thick seamless tube, which comprises a support table 1, a cold air device, a conveying track 3 and a cooling tunnel 4 formed around the conveying track 3; the conveying track 3 is arranged on the support table 1, and the conveying track 3 can be a roller table consisting of a plurality of conveying rollers, wherein the conveying rollers are driven by a motor; the table top of the supporting table 1 preferably inclines downwards at a certain angle along the direction from the feeding hole to the discharging hole of the cooling tunnel 4, so that the auxiliary conveying can be carried out by the gravity of the pipe material, and the purpose of saving electric energy is achieved. The cold wind equipment blows into cold wind through cold wind pipeline 5 in to cooling tunnel 4 and cools down, and an optimal scheme is, installs a plurality of wind ring 6 in the cooling tunnel 4, is the annular on the wind ring 6 and is provided with a plurality of nozzle 7, and the air outlet of cold wind pipeline 5 is linked together with the inner chamber of wind ring 6 to blow off cold wind through nozzle 7, nozzle 7 is to the exit slope of cooling tunnel 4, and the planar contained angle in nozzle 7 and wind ring 6 place is preferred 30 degrees.
An incoming material sensing device is installed at the inlet of the cooling tunnel 4 and used for detecting the pipe materials 2, the incoming material sensing device can be a heat sensing probe or other sensing detection devices, and the incoming material sensing device is mature in the prior art and is not specifically limited; and a temperature measuring instrument is arranged in the cooling tunnel 4 and is used for detecting the temperature of the pipe material 2 in real time. And the system also comprises a control system which can be a programmable logic controller, and a regulating and controlling system of the cold air equipment, a speed control system (namely a motor) of the conveying track 3, the incoming material sensing device and the temperature measuring instrument are electrically connected with the control system. The air pressure control system is electrically connected with the control system and used for receiving a control instruction of the control system, so that the starting and stopping and the wind speed of the air compressor are controlled.
The production process flow of the extra-thick-wall seamless pipe comprises the following steps:
heating a pipe material (1230-1260 ℃), piercing and rolling a hollow billet at 1220-1250 ℃, reducing the outer diameter of the hollow billet at 1230-1240 ℃, rolling a pierced billet at 1220-1230 ℃ by a rolling mill, air cooling and controlling the temperature of 1100-900 ℃ for the pierced billet, setting the outer diameter of a stretch reducer, then rolling at 850-700 ℃, cooling by a cooling bed to normal temperature, straightening the pipe body, sawing the head and the tail, inspecting a finished product, performing nondestructive inspection, spraying a label, packaging and warehousing.
Equipment for production: heating in a ring furnace, perforating machine, rolling mill, high-efficiency cooling air cooling device, stretch reducer, cooling bed air cooling correction, straightening by a straightening machine, sawing and cutting a tube row, magnetic leakage nondestructive inspection, packaging by an automatic packaging machine, weighing and warehousing.
The specific working principle of the high-efficiency cooling air cooling device is as follows: the method comprises the steps that after a supplied material sensing device detects supplied materials of a rolling mill process, a signal is transmitted to a control system, the control system sends an instruction to a wind pressure valve control system of an air compressor, a wind pressure valve of the air compressor is opened to supply enough compressed air to carry out high-pressure injection on pipe materials in a cooling tunnel to cool, meanwhile, a temperature measuring instrument carries out temperature measurement of all sections on the pipe materials and feeds measured temperature information back to the control system, and the control system sends an adjusting instruction to the wind pressure valve control system according to the temperature information, so that the wind pressure and the wind volume of the air compressor are increased and decreased until the required temperature section is reached. Meanwhile, the control system can adjust the rotating speed of the roller way motor according to the rolling line speed, so that the production rhythm is controlled.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the present invention has been described with reference to the specific embodiments, it should be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a production of seamless pipe of super thick wall is with high-efficient cooling air cooling device which characterized in that: comprises a support table (1), cold air equipment, a conveying track (3) and a cooling tunnel (4) formed around the conveying track (3); the conveying track (3) is arranged on the supporting table (1), and the cold air equipment blows cold air into the cooling tunnel (4) through a cold air pipeline (5) to cool; an incoming material sensing device is installed at an inlet of the cooling tunnel (4) and used for detecting the pipe materials (2), and a temperature measuring instrument is installed in the cooling tunnel (4) and used for detecting the temperature of the pipe materials (2) in real time.
2. The efficient cooling air cooling device for producing the ultra-thick seamless tube according to claim 1 is characterized in that: the cold air equipment speed control system comprises a control system, and the regulating and controlling system of the cold air equipment, the speed control system of the conveying track (3), the incoming material sensing device and the temperature measuring instrument are all electrically connected with the control system.
3. The efficient cooling air cooling device for producing the ultra-thick seamless tube according to claim 1 is characterized in that: install a plurality of wind ring (6) in cooling tunnel (4), it is the annular and is provided with a plurality of nozzle (7) on wind ring (6), the air outlet of cold-blast pipeline (5) is linked together with the inner chamber of wind ring (6) to blow out cold wind through nozzle (7).
4. The efficient cooling air cooling device for producing the ultra-thick seamless tube according to claim 2 is characterized in that: the cold wind equipment is the air compressor machine, the wind pressure valve regulation and control system and the control system electric connection of air compressor machine to the control command of receiving control system, thereby control opening of air compressor machine and stop and the wind speed.
5. The efficient cooling air cooling device for producing the ultra-thick seamless tube according to claim 2 is characterized in that: the conveying track (3) is a roller way formed by a plurality of conveying rollers, the conveying rollers are driven by a motor, and the motor is electrically connected with a control system.
6. The efficient cooling air cooling device for producing the ultra-thick seamless tube according to claim 1 or 2, wherein: the incoming material sensing device is a heat sensing probe.
7. The efficient cooling air cooling device for producing the ultra-thick seamless tube according to claim 3 is characterized in that: the nozzle (7) inclines towards the outlet of the cooling tunnel (4), and the included angle between the nozzle (7) and the plane where the air ring (6) is located is 30 degrees.
8. The efficient cooling air cooling device for producing the ultra-thick seamless tube according to claim 1 is characterized in that: the table top of the support table (1) inclines downwards at a certain angle along the direction from the feed inlet to the discharge outlet of the cooling tunnel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210168174.3A CN114378120A (en) | 2022-02-23 | 2022-02-23 | Efficient cooling air cooling device for producing super-thick-wall seamless pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210168174.3A CN114378120A (en) | 2022-02-23 | 2022-02-23 | Efficient cooling air cooling device for producing super-thick-wall seamless pipes |
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| Publication Number | Publication Date |
|---|---|
| CN114378120A true CN114378120A (en) | 2022-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210168174.3A Pending CN114378120A (en) | 2022-02-23 | 2022-02-23 | Efficient cooling air cooling device for producing super-thick-wall seamless pipes |
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| CN (1) | CN114378120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115971263A (en) * | 2023-03-20 | 2023-04-18 | 太原理工大学 | Online gradient temperature control equipment for seamless metal composite tube and rolling and heat treatment method thereof |
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2022
- 2022-02-23 CN CN202210168174.3A patent/CN114378120A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
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| CN206676927U (en) * | 2017-03-07 | 2017-11-28 | 江苏泰富恒通特种材料有限公司 | Water cooling device before a kind of Valve Steel finish rolling |
| CN211413170U (en) * | 2020-01-15 | 2020-09-04 | 浙江韦勒铝业有限公司 | Hot rolling mill for aluminum alloy plate strip |
| CN213162450U (en) * | 2020-07-13 | 2021-05-11 | 广西家友电缆科技有限公司 | Rolling device is used in production of stainless steel mineral substance heating cable |
| CN213134492U (en) * | 2020-07-15 | 2021-05-07 | 山东磐金钢管制造有限公司 | Novel stretch reducing mill cooling device |
Non-Patent Citations (2)
| Title |
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| 张辉宜, 刘彤, 黄瑾娉, 黄启益, 雷永周: "在线热处理钢轨自动控制系统研究及应用", 冶金自动化, no. 02, 25 March 2005 (2005-03-25), pages 2 - 3 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115971263A (en) * | 2023-03-20 | 2023-04-18 | 太原理工大学 | Online gradient temperature control equipment for seamless metal composite tube and rolling and heat treatment method thereof |
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