WO2014114091A1 - Cooling and bending preventing device for specially-shaped steel and process method - Google Patents

Cooling and bending preventing device for specially-shaped steel and process method Download PDF

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Publication number
WO2014114091A1
WO2014114091A1 PCT/CN2013/083308 CN2013083308W WO2014114091A1 WO 2014114091 A1 WO2014114091 A1 WO 2014114091A1 CN 2013083308 W CN2013083308 W CN 2013083308W WO 2014114091 A1 WO2014114091 A1 WO 2014114091A1
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Prior art keywords
cooling
profiled steel
nozzle
ball head
steel material
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PCT/CN2013/083308
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French (fr)
Chinese (zh)
Inventor
谭成楠
王荣军
李跃林
马靳江
赵远峰
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中冶赛迪工程技术股份有限公司
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Publication of WO2014114091A1 publication Critical patent/WO2014114091A1/en

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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
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product

Definitions

  • the invention belongs to the technical field of rolling steel in the metallurgical industry, and in particular relates to a special-shaped steel material for preventing cooling and bending device and a processing method thereof.
  • Profiles of profiled steels such as ball flat steel and L-shaped steel have asymmetry characteristics.
  • the rolling stock is caused by uneven distribution of section temperature and inconsistent cooling conditions during cooling after hot rolling.
  • the bending in the length direction, and the bending amplitude is extremely large, for example, the size of the ball flat head and the web are extremely different, and the temperature drop of the ball head and the web are inconsistent during the rolling process, so that the ball flat steel ball head after the final rolling forming
  • the temperature is generally higher than the web temperature by more than 100 °C.
  • the hot rolled steel of the flat steel is inconsistent after the cooling of the cold bed, and the cooling conditions are different.
  • the hot saw at the inlet of the cold bed will enter the full length of the cold bed
  • the saw is cut into two or more lengths and segmented into the cooling bed to reduce the full-length bending.
  • This traditional "short-seat cooling, short-slung straightening" production process and the current advanced steel "long-length cooling” Compared with the production process, the production process is low, the heat sawing process is increased, the straightening blind zone is increased, the cold sawing process is increased, and the finished product rate is reduced.
  • the current production cost of the existing flat steel production enterprises has caused the cost of hot saws, cold saw blades to increase, the cost of saws and electromechanicals to increase, and the head/tail amount of products to be increased due to long-slung sawing into two or more sections.
  • the accumulated stacking rate and other cumulative stacks, the cost per ton of steel is at least 20 yuan / ton more than the long-term production.
  • the technical problem to be solved by the present invention is to provide a profiled steel material preventing cooling and bending device and a process method thereof.
  • the profiled steel material prevents the cooling and bending device and the process method from controlling the section temperature index of the profiled steel material (such as the ball flat steel) of the asymmetric section.
  • the ball flat steel can obtain better initial cooling conditions after rolling, thereby effectively controlling the bending amplitude of the ball flat steel after long-length cooling, smooth Into the straightening machine for long straightening, to realize the "long-length production” technology of the "long-length cooling, long-length straightening" of the profiled steel represented by the spherical flat steel, to improve the production efficiency of the profiled steel Effectively improve the plasticity, toughness and finished product rate of profiled steel, and reduce the production cost of profiled steel.
  • the present invention relates to a profiled steel material preventing cooling and bending device, comprising a cooling mechanism respectively disposed before and/or after a profiled steel finishing mill, the cooling mechanism comprising a pipe, a water tank and a pipe end disposed at the end of the pipe Cooling nozzles I and cooling nozzles II located at the outer and lower sides of the shaped steel ball head, respectively.
  • the directions of the cooling cooling medium I and the cooling nozzle II located at the outer side and the lower side of the ball head are opposite to the running direction of the irregular steel material, and the spraying direction forms a clamping angle of 110° to 160° with the running direction of the irregular steel material. angle. Further, the directions of the cooling nozzles I and the cooling nozzles II located at the outer and lower sides of the ball head are perpendicular to the direction of the surface of the ball.
  • cooling nozzles II located at the lower side of the ball head are set to be not less than one set and mounted at a gap position between the two conveying rollers.
  • a dispenser is further included, one end of which is connected to the main pipe, and the other end is connected to the cooling nozzle I and the cooling nozzle II through the branch pipe.
  • branch pipe is respectively provided with a regulating valve for adjusting the flow rate of the cooling medium and/or a flow detecting device for detecting the flow rate of the cooling medium.
  • the present invention also includes a process for preventing profile bending of a profiled steel material comprising the steps of:
  • the ball portion of the profiled steel is further cooled by controlling the cooling medium sprayed from the cooling nozzle in the cooling mechanism II.
  • step 1) and step 2) a temperature measuring device for detecting the temperature of the shaped steel ball head and the web is provided, and the temperature measuring device transmits the detected temperature information of the shaped steel ball head and the web To the host, the host controls the cooling medium I and the cooling mechanism II cooling nozzle to discharge the flow rate of the cooling medium so that the temperature distribution of the ball and the web is uniform.
  • the cooling medium I and the cooling nozzles in the cooling nozzles of the cooling medium pressure range of 0. 4 ⁇ 3Mpa.
  • the cooling medium is provided as cooling water, compressed air or a mixture of cooling water and compressed air.
  • the special-shaped steel material preventing cooling bending device and the processing method of the invention reduce or eliminate the temperature difference between the ball head and the web of the ball flat steel by controlling the cross-sectional temperature distribution of the irregular-shaped steel material (such as the ball flat steel).
  • the ball flat steel can obtain better initial cooling conditions after rolling, so as to effectively control the bending amplitude of the ball flat steel after long-length cooling, smoothly enter the straightening machine for long straightening, and realize the ball flat steel (this At the point of the L-shaped steel, the "long-length production” technology of the "long-length cooling and long-length straightening" of the profiled steel of the asymmetric section is represented, which aims to improve the production efficiency of the profiled steel and reduce the production cost of the profiled steel. .
  • the invention relates to a special-shaped steel material preventing cooling bending device and a process method, which realizes the controlled rolling and controlled cooling process of the asymmetric section steel by the on-line control cooling device and the controlled rolling process technology, thereby effectively improving the strength and toughness of the material. Mechanical behavior.
  • FIG. 1 is a schematic structural view of a heat-resistant steel plate preventing cooling and bending device according to the present invention
  • FIG. 2 is a front view of the heat-resistant steel material preventing cooling and bending device of the present invention
  • Figure 3 is a plan view of the heat-resistant steel bending prevention device of the present invention.
  • Figure 4 is a flow chart of the production process of shaped steel.
  • FIG. 1 is a schematic view showing the structure of the anti-shaped steel material preventing cooling and bending device of the present invention
  • FIG. 2 is a front view showing the anti-shaped steel material preventing cooling and bending device of the present invention
  • Top view A profiled steel material prevention cooling bending device according to the present invention comprises cooling mechanisms respectively disposed before and/or after the profiled steel finishing mill, the cooling mechanism comprising pipes and the ends disposed at the ends of the pipe and respectively located outside the shaped steel ball head 10 And a cooling nozzle I 8 and a cooling nozzle II 9 at the lower side of the ball head 10.
  • cooling nozzles I 8 and cooling nozzles II on the outer side of the shaped steel ball head 10 and the lower side of the ball head 10 the nozzles are cooled according to the temperature distribution of the profiled steel head 10 and the web 11.
  • cooling nozzle ⁇ 9 sprays a corresponding flow of cooling medium to the outside and inside of the shaped steel ball head 10, specifically taking away the heat of the portion 10 of the shaped steel ball head, reducing or eliminating the temperature difference between the shaped steel ball head 10 and the web 11
  • the long-length production” technology achieves the purpose of improving the production efficiency of profiled steel and reducing the production cost of profiled steel.
  • the directions of the cooling nozzles I 8 and the cooling nozzles 9 located at the outer side and the lower side of the ball head 10 are opposite to the running direction of the profiled steel material and the injection direction forms 110° to 160° with the running direction of the profiled steel material.
  • the angle between °, the preferred cooling nozzle I 8 and the cooling nozzle ⁇ 9 in this embodiment are opposite to the running direction of the rolling stock and the angle between the injection angle and the rolling line is 110° to 160° for the purpose of cooling the nozzle. It can be fully utilized to reduce the injection volume of the cooling medium to achieve the best injection effect. At the same time, the flow rate and direction of the cooling medium can be flexibly adjusted according to the actual situation on site.
  • the cooling nozzles II 9 located at the lower side of the ball head 10 are disposed in a number of rows and are mounted at gap positions between the two conveying rollers.
  • a distributor is further provided, the one end of the distributor is connected to the main pipe, and the other end is connected with a cooling nozzle I 8 and a cooling nozzle 119 through a branch pipe, and the branch pipe is respectively provided with a flow for adjusting the flow rate of the cooling medium.
  • the solenoid valve and/or the flow rate detecting device for detecting the flow rate of the cooling medium in this embodiment, the number and flow rate of the water mist nozzle, the spray direction and the angle can be flexibly adjusted according to the shape of the rolled piece and the temperature of the section, and the jet flow rate can be According to the actual situation, the adjustment is controlled online or offline, so as to provide water mist with different cooling conditions for the rolled parts with uneven section temperature, so that the temperature of each part of the section of the rolled piece is uniform.
  • the difference between this embodiment and the first embodiment is that: the direction of the cooling cooling medium I 8 and the cooling nozzle II 9 located at the outer side and the lower side of the ball head 10 is perpendicular to the direction of the surface of the ball head 10,
  • the shape of the surface of the ball head is a circular arc shape or a straight line shape, and the cooling nozzle I 8 and the cooling nozzle ⁇ 9 are arranged in an arc or a straight line.
  • the present invention also includes a process for preventing profile bending of a profiled steel material comprising the steps of:
  • FIG. 4 is a flow chart of the production process of the profiled steel; in this embodiment, the profiled steel is passed through the finishing of the finishing section unit 1 through the pre-processed unit 1 consisting of heating and rough rolling.
  • the cooling mechanism I 2 of the inlet section of the rolling unit 3 controls the cooling of the ball head portion of the rolling stock, and then performs the final rolling forming of the rolling stock after entering the finishing rolling unit 3, and then enters the cooling mechanism II 4 of the exit side of the finishing rolling unit 3
  • the ball flat steel ball head portion is further controlled to cool, and the cooled rolled product is subjected to head/saw cutting by the sawing unit 5, and then enters the cooling unit 6 for cooling, and the rolled product cooled to room temperature then enters, including straightening, sawing.
  • the post-processing unit 7 such as cutting, checking stacking and collecting is subjected to subsequent processing and finally the finished product of the flat steel is obtained.
  • step 1) and step 2) a temperature measuring device 12 for detecting the temperature of the shaped steel ball head and the web is provided, and the temperature measuring device 12 detects the temperature of the shaped steel ball head and the web.
  • the information is transmitted to the host, which controls the temperature distribution of the ball and the web to be uniform by controlling the flow rate of the cooling medium ejected from the cooling nozzles in the cooling mechanism I 2 and the cooling mechanism II 4 .
  • the cooling medium of the cooling mechanism I 2 and the cooling mechanism ⁇ 4 has a cooling medium pressure range of 0.4 to 3 MPa, and the cooling mechanism is different from the phosphorus removal device.
  • the cooling medium is arranged as cooling water, compressed air or a mixture of cooling water and compressed air.
  • different injection cooling mediums may be selected according to different cooling speeds required, and compressed air or cooling water may be separately injected.
  • the mixed medium of cooling water and compressed air that is, water mist can be sprayed at the same time.
  • the preferred spray cooling medium of this embodiment is provided as a mixed medium of cooling water and compressed air, and the injected high-pressure air sprays water into the surface of the rolled piece. Due to the high speed of the sprayed water mist, the target area of the spray can be quickly taken away.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

A cooling and bending preventing device for specially-shaped steel comprises cooling mechanisms (2, 4) arranged in front of and/or behind a specially-shaped steel finishing mill respectively. The cooling mechanism comprises a pipeline, a water channel and cooling nozzles (8, 9) arranged at the tail end of the pipeline and respectively located on the outside of a specially-shaped steel bulb (10) and on the underside of the bulb. According to the process method of the cooling and bending preventing device for specially-shaped steel, excellent initial cooling condition can be obtained for rolled flat-bulb steel by the way of controlling the sectional temperature distribution of specially-shaped steel with an asymmetric section, temperature difference between those that the bulb (10) and a web (11) of the flat-bulb steel is reduced or eliminated; hence the plasticity and toughness of the specially-shaped steel are improved.

Description

异形钢材防止冷却弯曲装置及工艺方法  Shaped steel steel prevention cooling bending device and process method
技术领域 Technical field
本发明属于冶金行业轧钢技术领域,具体是涉及一种异形钢材防 止冷却弯曲装置及工艺方法。  The invention belongs to the technical field of rolling steel in the metallurgical industry, and in particular relates to a special-shaped steel material for preventing cooling and bending device and a processing method thereof.
背景技术 Background technique
异形钢材如球扁钢、 L型钢等的断面具有非对称性的特征， 轧件 在热轧成型后冷却过程中因断面温度分布不均、冷却条件不一致等因 素引起轧件在冷却至室温后引起长度方向的弯曲， 且弯曲幅度极大， 比如球扁钢球头和腹板的尺寸差异极大，在轧制过程中球头和腹板温 降不一致从而使得终轧成型后球扁钢球头的温度一般比腹板温度高 100°C以上， 球扁钢热态轧件在进入冷床冷却后由于球头和腹板的温 度不一致， 且冷却条件不一， 轧件在冷却至室温后由于热胀冷缩发生 全长方向的侧弯， 在进入矫直工序时无法咬入进行矫直， 对球扁钢正 常生产产生极大影响，因此这种非对称断面的异形钢材冷却后的矫直 工序带来极大困难， 且无法实现长尺冷却、 长尺矫直工艺， 严重影响 全线顺利生产。  Profiles of profiled steels such as ball flat steel and L-shaped steel have asymmetry characteristics. The rolling stock is caused by uneven distribution of section temperature and inconsistent cooling conditions during cooling after hot rolling. The bending in the length direction, and the bending amplitude is extremely large, for example, the size of the ball flat head and the web are extremely different, and the temperature drop of the ball head and the web are inconsistent during the rolling process, so that the ball flat steel ball head after the final rolling forming The temperature is generally higher than the web temperature by more than 100 °C. The hot rolled steel of the flat steel is inconsistent after the cooling of the cold bed, and the cooling conditions are different. The thermal expansion and contraction occur in the full-length side bend, and it is impossible to bite and straighten when entering the straightening process, which has a great influence on the normal production of the flat steel. Therefore, the straightening of the irregular steel section after cooling is straightened. The process brings great difficulties, and it is impossible to achieve long-length cooling and long-length straightening process, which seriously affects the smooth production of the entire line.
为满足非对称断面的异形钢材如球扁钢、 L型钢等在轧后进入冷 床冷却至室温后顺利进入矫直机进行矫直，冷床入口处的热锯将进入 冷床的全长轧件锯切成两段或多段长度， 分段进入冷床冷却， 从而将 全长的弯曲幅度减小， 这种传统的 "短尺冷却、 短尺矫直"生产工艺 与现在先进的型钢 "长尺冷却、 长尺矫直"生产工艺相比， 生产效率 低、热锯切工序增加、矫直盲区增加、冷锯切工序增加、成材率降低。 据统计，现有球扁钢生产企业现行的生产成本由于长尺锯切成两 段或多段后引起热锯、 冷锯锯片成本增加、 锯机电耗成本增加、 产品 切头 /尾量增加、 成材率下降等累积叠加， 吨钢成本比长尺生产至少 多 20元 /吨。 In order to meet the asymmetric section of the profiled steel, such as ball flat steel, L-shaped steel, etc., after rolling into the cold bed after cooling to room temperature, smoothly enter the straightening machine for straightening, the hot saw at the inlet of the cold bed will enter the full length of the cold bed The saw is cut into two or more lengths and segmented into the cooling bed to reduce the full-length bending. This traditional "short-seat cooling, short-slung straightening" production process and the current advanced steel "long-length cooling" Compared with the production process, the production process is low, the heat sawing process is increased, the straightening blind zone is increased, the cold sawing process is increased, and the finished product rate is reduced. According to statistics, the current production cost of the existing flat steel production enterprises has caused the cost of hot saws, cold saw blades to increase, the cost of saws and electromechanicals to increase, and the head/tail amount of products to be increased due to long-slung sawing into two or more sections. The accumulated stacking rate and other cumulative stacks, the cost per ton of steel is at least 20 yuan / ton more than the long-term production.
发明内容 Summary of the invention
本发明要解决的技术问题是提供一种异形钢材防止冷却弯曲装 置及工艺方法，该异形钢材防止冷却弯曲装置及工艺方法通过控制非 对称断面的异形钢材（如球扁钢）的断面温度分度， 减少或消除球扁 钢的球头与腹板间的温差，球扁钢在轧制完成后能获得较好的冷却初 始条件， 从而有效控制球扁钢在长尺冷却后的弯曲幅度， 顺利进入矫 直机进行长尺矫直，实现以球扁钢为代表的非对称断面的异形钢材先 进的 "长尺冷却、 长尺矫直"的 "长尺生产"技术， 达到提高异形钢 材生产效率、 有效提高异形钢材的塑性、 韧性和成材率， 降低异形钢 材生产成本的目的。  The technical problem to be solved by the present invention is to provide a profiled steel material preventing cooling and bending device and a process method thereof. The profiled steel material prevents the cooling and bending device and the process method from controlling the section temperature index of the profiled steel material (such as the ball flat steel) of the asymmetric section. , reducing or eliminating the temperature difference between the ball head and the web of the flat steel, the ball flat steel can obtain better initial cooling conditions after rolling, thereby effectively controlling the bending amplitude of the ball flat steel after long-length cooling, smooth Into the straightening machine for long straightening, to realize the "long-length production" technology of the "long-length cooling, long-length straightening" of the profiled steel represented by the spherical flat steel, to improve the production efficiency of the profiled steel Effectively improve the plasticity, toughness and finished product rate of profiled steel, and reduce the production cost of profiled steel.
为了解决上述技术问题， 本发明一种异形钢材防止冷却弯曲装 置， 包括分别设置在异形钢材精轧机前和 /或精轧机后的冷却机构， 所述冷却机构包括管道、水箱和设置在管道末端且分别位于异形钢材 球头外侧和下侧位置的冷却喷嘴 I和冷却喷嘴 II。  In order to solve the above technical problems, the present invention relates to a profiled steel material preventing cooling and bending device, comprising a cooling mechanism respectively disposed before and/or after a profiled steel finishing mill, the cooling mechanism comprising a pipe, a water tank and a pipe end disposed at the end of the pipe Cooling nozzles I and cooling nozzles II located at the outer and lower sides of the shaped steel ball head, respectively.
进一步，所述位于球头外侧和下侧位置的冷却喷嘴 I和冷却喷嘴 II的喷射冷却介质的方向均与异形钢材运行方向相对设置且喷射方 向与异形钢材运行方向形成 110° 〜160° 的夹角。 进一步，所述位于球头外侧和下侧位置的冷却喷嘴 I和冷却喷嘴 II的喷射冷却介质的方向均垂直于球头表面的方向。 Further, the directions of the cooling cooling medium I and the cooling nozzle II located at the outer side and the lower side of the ball head are opposite to the running direction of the irregular steel material, and the spraying direction forms a clamping angle of 110° to 160° with the running direction of the irregular steel material. angle. Further, the directions of the cooling nozzles I and the cooling nozzles II located at the outer and lower sides of the ball head are perpendicular to the direction of the surface of the ball.
进一步，所述位于球头下侧位置的冷却喷嘴 II设置为不少于 1组 且安装在两个传送辊之间间隙位置上。  Further, the cooling nozzles II located at the lower side of the ball head are set to be not less than one set and mounted at a gap position between the two conveying rollers.
进一步， 还包括分配器， 所述分配器一端与总管道相连接， 另一 端与通过分支管道连接有冷却喷嘴 I和冷却喷嘴 II。  Further, a dispenser is further included, one end of which is connected to the main pipe, and the other end is connected to the cooling nozzle I and the cooling nozzle II through the branch pipe.
进一步，所述分支管道上分别设置有用于调节冷却介质流量大小 的调节阀和 /或检测冷却介质流量大小的流量检测装置。  Further, the branch pipe is respectively provided with a regulating valve for adjusting the flow rate of the cooling medium and/or a flow detecting device for detecting the flow rate of the cooling medium.
本发明还包括一种异形钢材防止冷却弯曲的工艺方法，其包括以 下步骤：  The present invention also includes a process for preventing profile bending of a profiled steel material comprising the steps of:
1 ) 在异形钢材精轧前， 通过控制冷却机构 I中冷却喷嘴喷出的冷却 介质对异形钢材球头部分进行冷却；  1) cooling the ball portion of the profiled steel by controlling the cooling medium sprayed from the cooling nozzle in the cooling mechanism I before the finishing of the profiled steel;
2 ) 在异形钢材精轧后， 通过控制冷却机构 II中冷却喷嘴喷出的冷却 介质对异形钢材球头部分进行进一步冷却。  2) After the profiled steel is finish rolled, the ball portion of the profiled steel is further cooled by controlling the cooling medium sprayed from the cooling nozzle in the cooling mechanism II.
进一步， 在步骤 1 )和步骤 2) 中， 均设置有用于检测异形钢材 球头和腹板温度的测温装置，所述测温装置将检测到的异形钢材球头 和腹板的温度信息传送给主机，主机通过控制冷却机构 I和冷却机构 II冷却喷嘴喷出的冷却介质流量大小使得球头与腹板的温度分布均 匀。  Further, in step 1) and step 2), a temperature measuring device for detecting the temperature of the shaped steel ball head and the web is provided, and the temperature measuring device transmits the detected temperature information of the shaped steel ball head and the web To the host, the host controls the cooling medium I and the cooling mechanism II cooling nozzle to discharge the flow rate of the cooling medium so that the temperature distribution of the ball and the web is uniform.
进一步， 所述冷却机构 I和冷却机构 II中冷却喷嘴喷出的冷却 介质压力范围为 0. 4〜3Mpa。 进一步， 所述冷却介质设置为冷却水、 压缩空气或者冷却水和压缩空气混合物。 本发明的有益效果： 5〜3M帕。 The cooling medium I and the cooling nozzles in the cooling nozzles of the cooling medium pressure range of 0. 4~3Mpa. Further, the cooling medium is provided as cooling water, compressed air or a mixture of cooling water and compressed air. The beneficial effects of the invention:
1、 本发明一种异形钢材防止冷却弯曲装置及工艺方法通过控制 非对称断面的异形钢材（如球扁钢）的断面温度分布， 减少或消除球 扁钢的球头与腹板间的温差，球扁钢在轧制完成后能获得较好的冷却 初始条件， 从而有效控制球扁钢在长尺冷却后的弯曲幅度， 顺利进入 矫直机进行长尺矫直， 实现以球扁钢 （此处 L型钢提不提） 为代表的 非对称断面的异形钢材先进的 "长尺冷却、长尺矫直"的 "长尺生产" 技术， 达到提高异形钢材生产效率和降低异形钢材生产成本的目的。  1. The special-shaped steel material preventing cooling bending device and the processing method of the invention reduce or eliminate the temperature difference between the ball head and the web of the ball flat steel by controlling the cross-sectional temperature distribution of the irregular-shaped steel material (such as the ball flat steel). The ball flat steel can obtain better initial cooling conditions after rolling, so as to effectively control the bending amplitude of the ball flat steel after long-length cooling, smoothly enter the straightening machine for long straightening, and realize the ball flat steel (this At the point of the L-shaped steel, the "long-length production" technology of the "long-length cooling and long-length straightening" of the profiled steel of the asymmetric section is represented, which aims to improve the production efficiency of the profiled steel and reduce the production cost of the profiled steel. .
2、 本发明一种异形钢材防止冷却弯曲装置及工艺方法通过在线 控制冷却装置， 结合控制轧制工艺技术， 实现非对称断面型钢的控制 轧制和控制冷却工艺， 有效提高材料的强度、 韧性等机械性能。  2. The invention relates to a special-shaped steel material preventing cooling bending device and a process method, which realizes the controlled rolling and controlled cooling process of the asymmetric section steel by the on-line control cooling device and the controlled rolling process technology, thereby effectively improving the strength and toughness of the material. Mechanical behavior.
附图说明 DRAWINGS
图 1为本发明异形钢材防止冷却弯曲装置的结构示意图； 图 2为本发明异形钢材防止冷却弯曲装置的主视图；  1 is a schematic structural view of a heat-resistant steel plate preventing cooling and bending device according to the present invention; FIG. 2 is a front view of the heat-resistant steel material preventing cooling and bending device of the present invention;
图 3为本发明异形钢材防止冷却弯曲装置的俯视图；  Figure 3 is a plan view of the heat-resistant steel bending prevention device of the present invention;
图 4为异形钢材生产工艺流程图。  Figure 4 is a flow chart of the production process of shaped steel.
附图说明： 1-前工序单元； 2-冷却机构 I； 3-精轧单元； 4-冷却 机构 Π ; 5-锯切单元； 6-冷却单元； 7-后工序单元； 8-冷却喷嘴 I； 9-冷却喷嘴 II； 10-球头； 11-腹板； 12-测温装置。  BRIEF DESCRIPTION OF THE DRAWINGS: 1-pre-process unit; 2-cooling mechanism I; 3-finishing unit; 4-cooling mechanism Π; 5- sawing unit; 6-cooling unit; 7-post process unit; 8-cooling nozzle I 9-cooling nozzle II; 10-ball head; 11-web; 12-temperature measuring device.
具体实施方式 detailed description
下面结合附图对本发明的具体实施方式作详细说明：  The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings:
实施例一 如图 1所示为本发明异形钢材防止冷却弯曲装置的结构示意图； 如图 2所示为本发明异形钢材防止冷却弯曲装置的主视图；如图 3所 示为本发明异形钢材防止冷却弯曲装置的俯视图。本发明一种异形钢 材防止冷却弯曲装置包括分别设置在异形钢材精轧机前和 /或精轧机 后的冷却机构，所示冷却机构包括管道和设置在管道末端且分别位于 异形钢材球头 10的外侧和球头 10的下侧位置的冷却喷嘴 I 8和冷却 喷嘴 II 9。 本实施例通过在异形钢材球头 10的外侧及球头 10的下侧 位置装有冷却喷嘴 I 8和冷却喷嘴 II 9， 根据异形钢材头部 10与腹板 11的温度分布， 冷却喷嘴 I 8和冷却喷嘴 Π 9喷射相应流量的冷却介 质至异形钢材球头 10外侧及内侧，针对性的带走异形钢材球头 10部 分的热量， 降低或消除异形钢材球头 10与腹板 11的温差， 而有效控 制异形钢材在长尺冷却后的弯曲幅度， 顺利进入矫直机进行长尺矫 直，实现以球扁钢为代表的非对称断面的异形钢材先进的"长尺冷却、 长尺矫直"的 "长尺生产"技术， 达到提高异形钢材生产效率和降低 异形钢材生产成本的目的。 Embodiment 1 FIG. 1 is a schematic view showing the structure of the anti-shaped steel material preventing cooling and bending device of the present invention; FIG. 2 is a front view showing the anti-shaped steel material preventing cooling and bending device of the present invention; Top view. A profiled steel material prevention cooling bending device according to the present invention comprises cooling mechanisms respectively disposed before and/or after the profiled steel finishing mill, the cooling mechanism comprising pipes and the ends disposed at the ends of the pipe and respectively located outside the shaped steel ball head 10 And a cooling nozzle I 8 and a cooling nozzle II 9 at the lower side of the ball head 10. In this embodiment, by cooling nozzles I 8 and cooling nozzles II on the outer side of the shaped steel ball head 10 and the lower side of the ball head 10, the nozzles are cooled according to the temperature distribution of the profiled steel head 10 and the web 11. And cooling nozzle Π 9 sprays a corresponding flow of cooling medium to the outside and inside of the shaped steel ball head 10, specifically taking away the heat of the portion 10 of the shaped steel ball head, reducing or eliminating the temperature difference between the shaped steel ball head 10 and the web 11 Effectively control the bending width of the profiled steel after long-length cooling, smoothly enter the straightening machine for long straightening, and realize the advanced "long-length cooling, long-length straightening of the profiled steel with asymmetric cross-section represented by the flat steel.""The long-length production" technology achieves the purpose of improving the production efficiency of profiled steel and reducing the production cost of profiled steel.
进一步， 所述位于球头 10外侧和下侧位置的冷却喷嘴 I 8和冷 却喷嘴 Π 9的喷射冷却介质的方向均与异形钢材运行方向相对设置且 喷射方向与异形钢材运行方向形成 110° 〜160° 的夹角， 本实施例 优选的冷却喷嘴 I 8和冷却喷嘴 Π 9喷射方向与轧件运行方向相对且 喷射角度与轧制线成 110° 〜160° 的夹角是为了使冷却喷嘴喷射能 力得到充分发挥， 减少冷却介质喷射量， 达到最好喷射效果， 同时可 以根据现场实际情况灵活调整冷却介质的流量和方向。 进一步， 所述位于球头 10下侧位置的冷却喷嘴 II 9设置为不少 以 1排且安装在两个传送辊之间间隙位置上。 Further, the directions of the cooling nozzles I 8 and the cooling nozzles 9 located at the outer side and the lower side of the ball head 10 are opposite to the running direction of the profiled steel material and the injection direction forms 110° to 160° with the running direction of the profiled steel material. The angle between °, the preferred cooling nozzle I 8 and the cooling nozzle 本 9 in this embodiment are opposite to the running direction of the rolling stock and the angle between the injection angle and the rolling line is 110° to 160° for the purpose of cooling the nozzle. It can be fully utilized to reduce the injection volume of the cooling medium to achieve the best injection effect. At the same time, the flow rate and direction of the cooling medium can be flexibly adjusted according to the actual situation on site. Further, the cooling nozzles II 9 located at the lower side of the ball head 10 are disposed in a number of rows and are mounted at gap positions between the two conveying rollers.
进一步， 还包括分配器， 所述分配器一端与总管道相连接， 另一 端与通过分支管道连接有冷却喷嘴 I 8 和冷却喷嘴 119， 所述分支管 道上分别设置有用于调节冷却介质流量大小的电磁阀和 /或检测冷却 介质流量大小的流量检测装置， 本实施例中水雾喷嘴的数量和流量、 喷射方向及角度均可根据轧件外形、 断面温度的高低不同灵活调整， 且喷射流量可以根据实际情况在线或离线控制调整，以便给断面温度 不均的轧件提供不同冷却条件的水雾，从而使轧件断面各部分温度均 匀。  Further, a distributor is further provided, the one end of the distributor is connected to the main pipe, and the other end is connected with a cooling nozzle I 8 and a cooling nozzle 119 through a branch pipe, and the branch pipe is respectively provided with a flow for adjusting the flow rate of the cooling medium. The solenoid valve and/or the flow rate detecting device for detecting the flow rate of the cooling medium, in this embodiment, the number and flow rate of the water mist nozzle, the spray direction and the angle can be flexibly adjusted according to the shape of the rolled piece and the temperature of the section, and the jet flow rate can be According to the actual situation, the adjustment is controlled online or offline, so as to provide water mist with different cooling conditions for the rolled parts with uneven section temperature, so that the temperature of each part of the section of the rolled piece is uniform.
实施例二  Embodiment 2
本实施例与实施例一相比较的区别在于： 所述位于球头 10外侧 和下侧位置的冷却喷嘴 I 8和冷却喷嘴 II 9的喷射冷却介质的方向均 垂直于球头 10表面的方向， 本实施例中球头表面形状为圆弧形或者 直线型， 冷却喷嘴 I 8和冷却喷嘴 Π 9为圆弧或者直线安装设置。  The difference between this embodiment and the first embodiment is that: the direction of the cooling cooling medium I 8 and the cooling nozzle II 9 located at the outer side and the lower side of the ball head 10 is perpendicular to the direction of the surface of the ball head 10, In the embodiment, the shape of the surface of the ball head is a circular arc shape or a straight line shape, and the cooling nozzle I 8 and the cooling nozzle Π 9 are arranged in an arc or a straight line.
本实施例的其他结构与第一实施例相同， 不再一一累述。  Other structures of this embodiment are the same as those of the first embodiment, and will not be described one by one.
本发明还包括一种异形钢材防止冷却弯曲的工艺方法，其包括以 下步骤：  The present invention also includes a process for preventing profile bending of a profiled steel material comprising the steps of:
1 ) 在异形钢材精轧前， 通过控制冷却机构 I中冷却喷嘴喷出的冷却 介质对异形钢材球头部分进行冷却；  1) cooling the ball portion of the profiled steel by controlling the cooling medium sprayed from the cooling nozzle in the cooling mechanism I before the finishing of the profiled steel;
2 ) 在异形钢材精轧后， 通过控制冷却机构 II中冷却喷嘴喷出的冷却 介质对异形钢材球头部分进行进一步冷却。 如图 4所示为异形钢材生产工艺流程图； 本实施例中异形钢材通 过经过由加热和粗轧组成前工序单元 1 加工的异形钢材轧件在进入 精轧单元 3前， 先通过设置在精轧单元 3入口段的冷却机构 I 2对轧 件球头部分进行控制冷却，然后在进入精轧单元 3对轧件进行终轧成 型， 然后再进入精轧单元 3出口侧的冷却机构 II 4对球扁钢球头部分 进一步进行控制冷却， 冷却后的轧件通过锯切单元 5对轧件进行头 / 锯切后进入冷却单元 6进行冷却，冷却到室温的轧件随后进入包括矫 直、锯切、检査堆垛和收集等后工序单元 7进行后续加工并最终获得 球扁钢成品。 2) After the profiled steel is finish rolled, the ball portion of the profiled steel is further cooled by controlling the cooling medium sprayed from the cooling nozzle in the cooling mechanism II. Figure 4 is a flow chart of the production process of the profiled steel; in this embodiment, the profiled steel is passed through the finishing of the finishing section unit 1 through the pre-processed unit 1 consisting of heating and rough rolling. The cooling mechanism I 2 of the inlet section of the rolling unit 3 controls the cooling of the ball head portion of the rolling stock, and then performs the final rolling forming of the rolling stock after entering the finishing rolling unit 3, and then enters the cooling mechanism II 4 of the exit side of the finishing rolling unit 3 The ball flat steel ball head portion is further controlled to cool, and the cooled rolled product is subjected to head/saw cutting by the sawing unit 5, and then enters the cooling unit 6 for cooling, and the rolled product cooled to room temperature then enters, including straightening, sawing. The post-processing unit 7 such as cutting, checking stacking and collecting is subjected to subsequent processing and finally the finished product of the flat steel is obtained.
进一步， 在步骤 1 )和步骤 2) 中， 均设置有用于检测异形钢材 球头和腹板温度的测温装置 12， 所述测温装置 12将检测到的异形钢 材球头和腹板的温度信息传送给主机， 主机通过控制冷却机构 I 2和 冷却机构 II 4中冷却喷嘴喷出的冷却介质流量大小使得球头与腹板的 温度分布均匀。  Further, in step 1) and step 2), a temperature measuring device 12 for detecting the temperature of the shaped steel ball head and the web is provided, and the temperature measuring device 12 detects the temperature of the shaped steel ball head and the web. The information is transmitted to the host, which controls the temperature distribution of the ball and the web to be uniform by controlling the flow rate of the cooling medium ejected from the cooling nozzles in the cooling mechanism I 2 and the cooling mechanism II 4 .
进一步，所述冷却机构 I 2和冷却机构 Π 4中冷却喷嘴喷出的冷 却介质压力范围为 0. 4〜3Mpa， 该冷却机构不同于除磷装置。  Further, the cooling medium of the cooling mechanism I 2 and the cooling mechanism Π 4 has a cooling medium pressure range of 0.4 to 3 MPa, and the cooling mechanism is different from the phosphorus removal device.
进一步，所述冷却介质设置为冷却水、压缩空气或者冷却水和压 缩空气混合物，本实施中可以根据所需降温速度的不同可选用不同喷 射冷却介质， 即可单独喷射压缩空气或冷却水， 也可同时喷射冷却水 和压缩空气的混合介质， 即水雾， 本实施例优选的喷射冷却介质设置 为冷却水和压缩空气混合介质，喷射出的高压空气把水打成雾状喷射 到轧件表面， 因喷射出的水雾速度高， 可以很快带走喷射目标部位的 最后说明的是， 以上实施例仅用以说明本发明的技术方案而非 限制， 本发明的技术方案不仅适用于球扁钢和 L型钢， 而且同样适用 于槽钢、角钢等型钢产品， 尽管参照较佳实施例对本发明进行了详细 说明， 本领域的普通技术人员应当理解， 可以对本发明的技术方案进 行修改或者等同替换， 而不脱离本发明技术方案的宗旨和范围， 其均 应涵盖在本发明的权利要求范围当中。 Further, the cooling medium is arranged as cooling water, compressed air or a mixture of cooling water and compressed air. In this embodiment, different injection cooling mediums may be selected according to different cooling speeds required, and compressed air or cooling water may be separately injected. The mixed medium of cooling water and compressed air, that is, water mist can be sprayed at the same time. The preferred spray cooling medium of this embodiment is provided as a mixed medium of cooling water and compressed air, and the injected high-pressure air sprays water into the surface of the rolled piece. Due to the high speed of the sprayed water mist, the target area of the spray can be quickly taken away. Finally, the above embodiments are only used to illustrate the technical solution of the present invention and not limitation. The technical solution of the present invention is applicable not only to ball flat steel and L-shaped steel, but also to steel products such as channel steel and angle steel, although reference is made to The present invention has been described in detail with reference to the preferred embodiments of the present invention. Within the scope of the claims of the invention.

Claims

权利要求书 Claim
1. 一种异形钢材防止冷却弯曲装置， 其特征在于： 包括分别设置在 异形钢材精轧机前和 /或精轧机后的冷却机构， 所述冷却机构包括管 道、水箱和设置在管道末端且分别位于异形钢材球头外侧和下侧位置 的冷却喷嘴 I和冷却喷嘴 II。  A profiled steel material preventing cooling bending device, comprising: a cooling mechanism respectively disposed in front of a profiled steel finishing mill and/or a finishing mill, the cooling mechanism comprising a pipe, a water tank and being disposed at the end of the pipe and respectively located The cooling nozzle I and the cooling nozzle II at the outer and lower sides of the shaped steel ball head.
2. 如权利要求 1所述的异形钢材防止冷却弯曲装置， 其特征在于： 所述位于球头外侧和下侧位置的冷却喷嘴 I和冷却喷嘴 II的喷射冷 却介质的方向均与异形钢材运行方向相对设置且喷射方向与异形钢 材运行方向形成 110 ° 〜160 ° 的夹角。  2. The profiled steel material preventing cooling bending device according to claim 1, wherein: the direction of the cooling cooling medium I and the cooling nozzle II located at the outer side and the lower side of the ball head are in the direction of the running direction of the irregular steel material. Relatively set and the spray direction forms an angle of 110 ° ~ 160 ° with the running direction of the profiled steel.
3. 如权利要求 1所述的异形钢材防止冷却弯曲装置， 其特征在于： 所述位于球头外侧和下侧位置的冷却喷嘴 I和冷却喷嘴 II的喷射冷 却介质的方向均垂直于球头表面的方向。  3. The profiled steel material prevention cooling bending device according to claim 1, wherein: the direction of the cooling cooling medium I and the cooling nozzle II located at the outer side and the lower side of the ball head are perpendicular to the surface of the ball head. The direction.
4. 如权利要求 2或 3所述的异形钢材防止冷却弯曲装置， 其特征在 于：所述位于球头下侧位置的冷却喷嘴 II设置为不少于 1组且安装在 两个传送辊之间间隙位置上。  4. The profiled steel material preventing cooling bending device according to claim 2 or 3, wherein the cooling nozzles II located at a lower side of the ball head are disposed in not less than one set and are installed between the two conveying rollers. At the gap position.
5. 如权利要求 4所述的异形钢材防止冷却弯曲装置， 其特征在于： 还包括分配器， 所述分配器一端与总管道相连接， 另一端与通过分支 管道连接有冷却喷嘴 I和冷却喷嘴 II。  5. The profiled steel material prevention cooling bending device according to claim 4, further comprising: a distributor, wherein one end of the distributor is connected to the main pipe, and the other end is connected to the cooling nozzle I and the cooling nozzle through the branch pipe. II.
6. 如权利要求 5所述的异形钢材防止冷却弯曲装置， 其特征在于： 所述分支管道上分别设置有用于调节冷却介质流量大小的调节阀和 / 或检测冷却介质流量大小的流量检测装置。 6. The profiled steel material prevention cooling bending device according to claim 5, wherein: the branch pipe is provided with a regulating valve for adjusting the flow rate of the cooling medium and/or a flow rate detecting device for detecting the flow rate of the cooling medium.
7. 一种异形钢材防止冷却弯曲的工艺方法， 其特征在于： 其包括以 下步骤： 7. A process for preventing profile bending of a profiled steel material, characterized in that it comprises the following steps:
1 ) 在异形钢材精轧前， 通过控制冷却机构 I中冷却喷嘴喷出的冷却 介质对异形钢材球头部分进行冷却；  1) cooling the ball portion of the profiled steel by controlling the cooling medium sprayed from the cooling nozzle in the cooling mechanism I before the finishing of the profiled steel;
2 ) 在异形钢材精轧后， 通过控制冷却机构 II中冷却喷嘴喷出的冷却 介质对异形钢材球头部分进行进一步冷却。  2) After the profiled steel is finish rolled, the ball portion of the profiled steel is further cooled by controlling the cooling medium sprayed from the cooling nozzle in the cooling mechanism II.
8. 如权利要求 7所述的异形钢材防止冷却弯曲的工艺方法， 其特征 在于： 在步骤 1 ) 和步骤 2) 中， 均设置有用于检测异形钢材球头和 腹板温度的测温装置，所述测温装置将检测到的异形钢材球头和腹板 的温度信息传送给主机，主机通过控制冷却机构 I和冷却机构 II中冷 却喷嘴喷出的冷却介质流量大小使得球头与腹板的温度分布均匀。  8. The method according to claim 7, wherein: in step 1) and step 2), a temperature measuring device for detecting the temperature of the shaped steel ball head and the web is provided, The temperature measuring device transmits the detected temperature information of the shaped steel ball head and the web to the host, and the host controls the cooling medium and the web by controlling the cooling medium flow rate of the cooling nozzle in the cooling mechanism I and the cooling mechanism II. The temperature distribution is uniform.
9. 如权利要求 8所述的异形钢材防止冷却弯曲的工艺方法， 其特征 在于：所述冷却机构 I和冷却机构 II中冷却喷嘴喷出的冷却介质压力 范围为 0. 4〜3Mpa。  5〜3M帕。 The cooling medium I and the cooling mechanism in the cooling mechanism of the cooling medium sprayed in the range of 0. 4~3Mpa.
10. 如权利要求 7〜9任一项所述的异形钢材防止冷却弯曲的工艺方 法， 其特征在于： 所述冷却介质设置为冷却水、 压缩空气或者冷却水 和压缩空气混合物。  The process for preventing the cooling and bending of the profiled steel material according to any one of claims 7 to 9, characterized in that the cooling medium is provided as cooling water, compressed air or a mixture of cooling water and compressed air.
PCT/CN2013/083308 2013-01-25 2013-09-11 Cooling and bending preventing device for specially-shaped steel and process method WO2014114091A1 (en)

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