CN111496107A - Hot-forming steel plate rolling production line and method - Google Patents
Hot-forming steel plate rolling production line and method Download PDFInfo
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- CN111496107A CN111496107A CN202010344180.0A CN202010344180A CN111496107A CN 111496107 A CN111496107 A CN 111496107A CN 202010344180 A CN202010344180 A CN 202010344180A CN 111496107 A CN111496107 A CN 111496107A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D21/00—Combined processes according to methods covered by groups B21D1/00 - B21D19/00
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Abstract
The invention discloses a hot-forming steel plate rolling production line and a method, wherein the production line comprises a forming roller, a shape correcting and positioning roller, a heating system and a cooling system; the forming roller is positioned at the foremost end of the production line; the heating system is positioned behind the forming roller and comprises an induction heating power supply, an electromagnetic induction heater, a heating conveying roller and a temperature sensor; the cooling system is positioned at the rear part of the heating system and comprises a cooling device, a cooling conveying roller and a cooling system control box; the shape correcting positioning roller is positioned behind the cooling system. The method comprises the following steps: the steel plate raw plate is formed under the action of the forming roller, is heated by the heating system and is rapidly cooled by the cooling system after being formed, and is finally corrected by the shape correcting positioning roller, so that the finished product is finished. The invention adopts a multi-stage heating mode for heating treatment, thereby being safer and reducing the cost; meanwhile, the cooling treatment is carried out by adopting the original cooling device, the cooling effect is good, the regulation and control are very flexible, and the controllability of the performance of the steel plate is improved.
Description
Technical Field
The invention relates to a production line and a method, in particular to a hot-forming steel plate rolling production line and a method.
Background
Rolling is a mature technology for designing and manufacturing various types of steel plates, in the prior art, a formed steel plate is heated in a one-time heating mode, a raw steel plate is heated to a high temperature of about 1000 ℃ in one time, the requirement on the heating power of electric heating equipment is high, the controllability difficulty of the heating process is improved, once a fault occurs, the steel plate is easily fused, and the rolling production of the steel plate is influenced; meanwhile, in the prior art, although the cooling treatment modes after heating are various, the cooling process is difficult to flexibly regulate and control, and due to the defect that the cooling efficiency is difficult to control, the tensile property of the corrected steel plate final product is influenced, and the product quality control difficulty of the steel plate final product is improved.
Disclosure of Invention
In order to overcome the defects of the technology, the invention provides a hot-forming steel plate rolling production line and a hot-forming steel plate rolling production method.
In order to solve the technical problems, the invention adopts the technical scheme that: a hot forming steel plate rolling production line comprises a forming roller, a shape correcting and positioning roller, a heating system and a cooling system;
the forming roller is positioned at the foremost end of the production line, the heating system is positioned behind the forming roller, the cooling system is positioned behind the heating system, and the shape correcting positioning roller is positioned behind the cooling system;
the heating system comprises an induction heating power supply, an electromagnetic induction heater, a heating conveying roller and a temperature sensor; the electromagnetic induction heater is positioned behind the heating conveying roller to heat the steel plate raw plate and is electrically connected with the induction heating power supply; the temperature sensor is arranged on one side of the electromagnetic induction heater and used for monitoring the temperature condition of the steel plate raw plate when the steel plate raw plate passes through the heating system;
the cooling system comprises a cooling device, a cooling conveying roller and a cooling system control box; the cooling device comprises a box body, wherein copper plates are symmetrically fixed on the front wall and the rear wall of the box body, an opening for the steel plate raw plate 5 to pass through is formed in each copper plate, and a first air pipe connector and a first water pipe connector are arranged on the side wall of the box body; the inner part of the box body is fixedly provided with a mounting frame, a spray head is arranged on the mounting frame, one side of the spray head is communicated with a spray head air inlet pipe, the other side of the spray head is communicated with a spray head water inlet pipe, the spray head air inlet pipe passes through a first air pipe interface and is connected with an air pipe branch pipeline through a quick connector, and the spray head water inlet pipe passes through a first water pipe interface and is connected with a water pipe branch pipeline through a;
the cooling system control box is provided with a second air pipe interface connected with the air pipe branch pipeline, the cooling system control box is also provided with a second water pipe interface connected with the water pipe branch pipeline, the second water pipe interface is communicated with a main water inlet pipe, and the main water inlet pipe is provided with a pressure water pump; a filtering pressure reducing valve, a precision filter and an electric control proportion pressure regulating valve are arranged in the cooling system control box, the filtering pressure reducing valve is communicated with a main air inlet pipe and communicated with the precision filter, the precision filter is communicated with the electric control proportion pressure regulating valve, and the electric control proportion pressure regulating valve is connected with an air pipe branch pipeline at a second air pipe joint through a pipeline.
Furthermore, the forming roller is provided with a plurality of forming rollers which are sequentially arranged in sequence, and each forming roller consists of a forming upper roller and a forming lower roller which are matched with each other.
Furthermore, a plurality of electromagnetic induction heaters are arranged, and one electromagnetic induction heater is connected with one induction heating power supply, so that the steel plate raw plate is heated step by step.
Furthermore, the number of the arranged air pipe interfaces, the number of the arranged water pipe interfaces and the number of the arranged branches of the air pipe branch pipelines and the water pipe branch pipelines are consistent with the number of the arranged spray heads, and the number of the arranged electric control proportion pressure regulating valves, the number of the arranged air pipe interfaces and the number of the arranged water pipe interfaces are consistent with the number of the arranged cooling devices.
Furthermore, the shape correction positioning rollers are provided with multiple stages, the multiple stages of shape correction positioning rollers are sequentially arranged, and each stage of shape correction positioning roller consists of a shape correction positioning upper roller and a shape correction positioning lower roller which are matched with each other.
A production method of a hot-formed steel plate rolling production line comprises the following specific steps:
the method comprises the following steps of firstly, conveying a steel plate raw plate to a forming roller, and realizing the change of the shape of the steel plate raw plate under the extrusion of a forming upper roller and a forming lower roller, wherein at the moment, the steel plate raw plate can be bent and the radius of a bottom fillet can be reduced, and the steel plate raw plate is formed through the extrusion of a plurality of forming rollers;
the forming method comprises the following steps that when a steel plate raw plate deforms at a forming roller, the formed steel plate continuously enters a heating system, alternating current generated by an induction heating power supply passes through an electromagnetic induction heater and generates an alternating magnetic field, the steel plate is rapidly heated by the electromagnetic induction heater, and the steel plate raw plate is gradually heated and accumulated to the final temperature required by production due to the fact that a plurality of electromagnetic induction heaters are arranged; in the heating process, the temperature sensor detects the temperature condition of the steel plate during each stage of heating, and regulates and controls the heating temperature of each stage according to production needs;
the heated steel plate raw plate is continuously conveyed to a cooling system by a heating conveying roller, the steel plate raw plate enters a box body of a cooling device through an opening, meanwhile, a control box of the cooling system sends gas and cooling water to a spray head, the gas and the cooling water are fully mixed in the spray head, and finally, an atomized water curtain is sprayed out from the spray head to cool the steel plate raw plate; because a plurality of cooling devices are arranged, the steel plate raw plate is cooled step by step in the process of passing through the cooling system;
and the cooled steel plate raw plate is continuously conveyed to the position of the sizing positioning roller by the cooling conveying roller, and the sizing positioning roller corrects the deformation which is not in accordance with the standard and is generated by the steel plate raw plate, so that the whole hot-forming steel plate rolling production is completed.
The invention discloses a hot-forming steel plate rolling production line and a hot-forming steel plate rolling production method, wherein a formed steel plate raw plate is heated in a multi-stage heating mode, so that the high-power requirement on electric heating equipment is met, the production cost is reduced, the controllability of a heating process is improved, and the safety of the whole production line is improved; meanwhile, the cooling device which is originally created is adopted for cooling treatment, the cooling effect is good, the cooling efficiency can be regulated according to production requirements, the cooling process is very flexible to regulate, the performance controllability of the steel plate material is high, and the product quality of the final steel plate product is greatly improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is an enlarged schematic view of the structure of the heating system in fig. 1.
Fig. 4 is a schematic view of the overall structure of a cooling tank in the cooling system of the present invention.
Fig. 5 is a schematic view of the internal structure of fig. 4.
Fig. 6 is a front view of fig. 5.
Fig. 7 is a schematic view showing the internal structure of a cooling system control box of the cooling system of the present invention.
Fig. 8 is a front view of fig. 7.
In the figure: 1. a forming roller; 2. a heating system; 3. a cooling system; 4. correcting the shape of the positioning roller; 5. a steel plate raw plate;
21. an induction heating power supply; 22. an electromagnetic induction heater; 23. heating the conveying roller; 24. a temperature sensor;
31. a cooling system control box; 32. a cooling device; 33. cooling the conveying roller;
311. a filtering pressure reducing valve; 312. a precision filter; 313. an electric control proportional pressure regulating valve; 314. a second air pipe interface; 315. a main air inlet pipe; 316. a main water inlet pipe; 317. a second water pipe connector; 318. a tracheal branch line; 319. a water pipe branch line;
320. a box body; 321. a copper plate; 322. an opening; 323. a first air pipe interface; 324. a first water pipe connector; 325. a mounting frame; 326. a spray head; 327. a fixing plate; 328. a nozzle air inlet pipe; 329. a nozzle water inlet pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A hot forming steel plate rolling production line is shown in figures 1 and 2 and comprises a forming roller 1, a shape correcting positioning roller 4, a heating system 2 and a cooling system 3;
firstly, the forming roller 1 is located at the foremost end of the production line and is responsible for forming the steel plate raw plate 5, generally, the forming roller 1 is provided with a plurality of forming rollers which are sequentially arranged in sequence, each forming roller consists of a forming upper roller and a forming lower roller which are matched with each other, and the forming upper roller and the forming lower roller are extruded with each other to change the shape of the steel plate raw plate 5.
Secondly, the heating system 2 is positioned behind the forming roller 1 to heat the formed steel plate raw plate 5, so that the steel plate is rapidly cooled after being heated, and the performance of the steel plate is effectively improved; as for the heating system 2, the composition is shown in fig. 2 and fig. 3, the heating system 2 includes an induction heating power supply 21, an electromagnetic induction heater 22, a heating and conveying roller 23 and a temperature sensor 24;
wherein, the electromagnetic induction heater 22 is positioned behind the heating and conveying roller 23 to heat the steel plate raw plate 5, and the electromagnetic induction heater 22 is electrically connected with the induction heating power supply 21, so that alternating current generated by the induction heating power supply 21 passes through the electromagnetic induction heater 22 and generates an alternating magnetic field, and the steel plate raw plate 5 is rapidly heated when passing through the electromagnetic induction heater 22, thereby realizing the heating of the steel plate raw plate 5; meanwhile, a temperature sensor 24 is also installed on one side of the electromagnetic induction heater 22 to monitor the temperature condition of the steel plate raw plate 5 when passing through the heating system 2;
for the hot forming steel plate rolling production line disclosed by the invention, a plurality of electromagnetic induction heaters 22 are arranged, one electromagnetic induction heater is connected with one induction heating power supply to form a multi-stage heating system, each stage of heating is provided with a temperature sensor for monitoring the temperature, the heating temperature of each stage is regulated and controlled according to the actual production requirement, and a common P L C control system is adopted for regulating and controlling, so that the steel plate raw plate 5 is heated step by step, the heating temperature of the steel plate raw plate 5 passes through the electromagnetic induction heaters 22 one by one, is accumulated continuously, and finally reaches the final temperature of hot forming treatment.
Furthermore, the cooling system 3 is positioned behind the heating system 2 to rapidly cool the heated steel plate raw plate 5; as shown in fig. 2, the cooling system 3 includes a cooling device 32, a cooling conveyance roller 33, and a cooling system control box 31;
the cooling device 32 is a main device for performing cooling treatment on the steel plate raw plate 5, as shown in fig. 4, the cooling device comprises a box 320, copper plates 321 are symmetrically fixed on the front wall and the rear wall of the box 320, the copper plates 321 are provided with openings 322 for the steel plate raw plate 5 to pass through, when the high-temperature steel plate raw plate passes through the cooling device 32, the main affected area is the area range set by the copper plates 321, and the copper material has the advantage of small thermal expansion coefficient, so that the deformation amount is small, and the phenomenon that the whole box 320 deforms due to high temperature is effectively avoided; in addition, in order to prevent the cooling water from splashing outside during internal cooling and affecting the rolling production of the steel plate, the whole box body 320 is sealed by adopting a high-temperature-resistant sealing ring;
a first air pipe connector 323 and a first water pipe connector 324 are arranged on the side wall of the box body 320, so that the pipeline connection is facilitated; as shown in fig. 5 and 6, which are schematic diagrams of the internal structure of the box 320, a mounting frame 325 is fixedly installed inside the box 320, and the mounting frame 325 may be designed into a polygonal frame, such as a three-sided, four-sided or pentagonal metal frame, preferably a quadrangular frame, according to production requirements, so that the installation is the simplest; the spray head 326 is arranged on the mounting frame 325, a cooling area is formed in the frame body of the mounting frame 325, and the mouth of the spray head 326 faces the cooling area, so that cooling water is sprayed on the steel plate passing through the cooling area accurately, and cooling treatment is performed quickly and efficiently; a plurality of spray heads 326 are arranged, the spray heads 326 are tightly pressed through fixing plates 327, the spray heads 326 are fixed on the mounting frame through fixing bolts, and the spray heads 326 are generally arranged on each edge of the mounting frame 325, so that the original steel plate can be comprehensively covered, and the cooling effect is ensured;
for the spray head 326, it can spray fan-shaped atomized water curtain to cool a large area; the specific setting is as follows: as shown in fig. 5, 6 and 7, one side of the nozzle 326 is communicated with a nozzle inlet pipe 328, the other side is communicated with a nozzle inlet pipe 329, the nozzle inlet pipe 328 passes through the first air pipe connector 323 and is connected with the air pipe branch pipeline 318 through a quick connector, and the nozzle inlet pipe 329 passes through the first water pipe connector 324 and is connected with the water pipe branch pipeline 319 through a quick connector; a second air pipe interface 314 connected with an air pipe branch pipeline 318 is arranged on the cooling system control box 31, and a second water pipe interface 317 connected with a water pipe branch pipeline 319 is also arranged on the cooling system control box 31; accordingly, the cooling water and the gas amount are controlled by the cooling system control box 31, and the cooling water and the gas are further introduced into the shower head 326.
As shown in fig. 6 and 7, the internal structure of the cooling system control box 31 is configured as follows, a filtering pressure reducing valve 311, a precision filter 312 and an electronic control proportion pressure regulating valve 313 are installed in the cooling system control box 31, the filtering pressure reducing valve 311 is communicated with a main air inlet pipe 315, the filtering pressure reducing valve 311 is communicated with the precision filter 312, the precision filter 312 is communicated with the electronic control proportion pressure regulating valve 313, the electronic control proportion pressure regulating valve 313 is connected with an air pipe branch pipe 318 at a second air pipe interface 314 through a pipeline, thereby realizing the introduction of gas, namely, the gas (generally air) introduced from the outside enters the filtering pressure reducing valve 311 through the main air inlet pipe 315, is firstly coarsely filtered by the filtering pressure reducing valve 311, and maintains a stable pressure value, the pressure value is regulated and controlled according to the actual production requirement, the stable gas enters the precision filter 31 for fine filtering, and impurities in, the influence of impurities on the quality of a steel plate final product is avoided; the finely filtered gas flows into the gas pipe branch pipe 318 according to a set amount under the control of the electric control proportional pressure regulating valve 313, and finally enters the spray head 326 through the spray head gas inlet pipe 328; the setting of the flow rate of the electric control proportional pressure regulating valve 313 needs to be specifically set according to the amount of cooling water and the actual production needs;
while the gas enters the showerhead 326, cooling water also flows into the showerhead 326; as also shown in fig. 6 and 7, the second water pipe joint 317 is communicated with a main water inlet pipe 316, and a pressure water pump is installed on the main water inlet pipe 316; the pressure water pump is a water pump with constant water pressure, under the control of the pressure water pump, cooling water with constant pressure is introduced into the main water inlet pipe 316, and the cooling water passes through the water pipe branch pipe 319 and the nozzle water inlet pipe 329 in sequence and then enters the nozzle 326. Generally, the water spraying amount of the nozzle is in inverse proportion to the air pressure, so that the water spraying amount of the nozzle can be simply and quickly regulated and controlled by regulating and controlling the air pressure of the electric control proportional pressure regulating valve 313 on the premise of keeping the water pressure of the main water inlet pipe 316 unchanged, thereby regulating and controlling the cooling efficiency;
further, in order to better ensure the cooling effect and enhance the adjustment flexibility of the cooling system, at least one cooling device 32 is provided, and each cooling device comprises a plurality of spray heads, so that the number of the first air pipe interface 323 and the first water pipe interface 324 and the number of the branches of the air pipe branch pipeline 318 and the water pipe branch pipeline 319 are consistent with the number of the spray heads 326, and the number of the electric control proportional pressure regulating valve 313, the second air pipe interface 314 and the second water pipe interface 317 are consistent with the number of the cooling devices 32; the pipelines and the interfaces are connected in a one-to-one matching way by adopting a branch connection way;
for the hot-forming steel plate rolling production line disclosed by the invention, a brand-new cooling device 32 is designed to carry out all-around cooling, so that the cooling effect of the steel plate is fully ensured; the control of the water spraying amount of the spray head 326 is realized by regulating and controlling the air pressure and the water pressure entering the spray head 326, so that the cooling rate is controlled, the flexible regulation and control can be realized according to the actual production requirement, the performance of the steel plate is better controlled, and the control of the quality of the final product of the steel plate can be better realized; meanwhile, a multistage cooling mode is adopted for cooling treatment, so that the regulation and control flexibility of the cooling effect and the cooling efficiency is further improved.
Finally, the cooled steel plate raw plate needs to be subjected to shape correction treatment, and deformation which does not meet the standard is treated; the shape correction positioning roller 4 is positioned behind the cooling system 3, the shape correction positioning roller 4 is provided with multiple stages, the multiple stages of shape correction positioning rollers are sequentially arranged, and each stage of shape correction positioning roller consists of a shape correction positioning upper roller and a shape correction positioning lower roller which are matched with each other.
The invention also discloses a production method of the hot-formed steel plate rolling production line, which comprises the following steps:
firstly, the original steel plate 5 is sent to a forming roller 1, the shape of the original steel plate 5 is changed under the extrusion of a forming upper roller and a forming lower roller, at the moment, the original steel plate 5 can be bent and the radius of a bottom fillet is reduced, and the forming of the original steel plate 5 is completed through the extrusion of a plurality of forming rollers;
the forming method comprises the following steps that when a steel plate raw plate 5 deforms at a forming roller 1, the formed steel plate continuously enters a heating system 2, alternating current generated by an induction heating power supply 21 passes through an electromagnetic induction heater 22 and generates an alternating magnetic field, the steel plate is rapidly heated by the electromagnetic induction heater 22, and the steel plate raw plate 5 is gradually heated and accumulated to the final temperature required by production due to the fact that a plurality of electromagnetic induction heaters 22 are arranged; in the heating process, the temperature sensor detects the temperature condition of the steel plate during each stage of heating, and regulates and controls the heating temperature of each stage according to production needs;
the heated steel plate raw plate 5 is continuously conveyed to the cooling system 3 by the heating conveying roller 23, the steel plate raw plate 5 enters the box body 320 of the cooling device through the opening 322, meanwhile, the cooling system control box 31 sends gas and cooling water to the spray head 326, the gas and the cooling water are fully mixed in the spray head 326, and finally, an atomized water curtain is sprayed out from the spray head 326 to cool the steel plate raw plate 5; because the cooling device 32 is provided in plurality, the steel plate raw plate 5 is cooled step by step in the process of passing through the cooling system 3;
the cooled steel plate raw plate 5 is continuously conveyed to the shape correcting positioning roller 4 by the cooling conveying roller 33, the shape correcting positioning roller 4 corrects the deformation which is not in accordance with the standard and is generated by the steel plate raw plate 5, and the whole hot forming steel plate rolling production is completed.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (7)
1. The utility model provides a hot-forming steel sheet roll-in production line, is including taking shape running roller (1), school shape location running roller (4), its characterized in that: the device also comprises a heating system (2) and a cooling system (3);
the forming roller (1) is positioned at the foremost end of the production line, the heating system (2) is positioned behind the forming roller (1), the cooling system (3) is positioned behind the heating system (2), and the shape correcting positioning roller (4) is positioned behind the cooling system (3);
the heating system (2) comprises an induction heating power supply (21), an electromagnetic induction heater (22), a heating conveying roller (23) and a temperature sensor (24); the electromagnetic induction heater (22) is positioned behind the heating and conveying roller (23) so as to heat the steel plate raw plate (5), and the electromagnetic induction heater (22) is electrically connected with the induction heating power supply (21); the temperature sensor (24) is arranged on one side of the electromagnetic induction heater (22) and is used for monitoring the temperature condition of the steel plate raw plate (5) when the steel plate raw plate passes through the heating system (2);
the cooling system (3) comprises a cooling device (32), a cooling conveying roller (33) and a cooling system control box (31); the cooling device (32) comprises a box body (320), copper plates (321) are symmetrically fixed on the front wall and the rear wall of the box body (320), an opening (322) for the steel plate raw plate (5) to pass through is formed in each copper plate (321), and a first air pipe connector (323) and a first water pipe connector (324) are arranged on the side wall of the box body (320); the inner part of the box body (320) is fixedly provided with a mounting frame (325), the mounting frame (325) is provided with a spray head (326), one side of the spray head (326) is communicated with a spray head air inlet pipe (328), the other side of the spray head (326) is communicated with a spray head water inlet pipe (329), the spray head air inlet pipe (328) penetrates through a first air pipe connector (323) and is connected with a branch air pipe pipeline (318) through a quick connector, and the spray head water inlet pipe (329) penetrates through a first water pipe connector (324) and is connected with a branch water pipe pipeline;
a second air pipe connector (314) connected with the air pipe branch pipeline (318) is arranged on the cooling system control box (31), a second water pipe connector (317) connected with the water pipe branch pipeline (319) is further arranged on the cooling system control box (31), the second water pipe connector (317) is communicated with a main water inlet pipe (316), and a pressure water pump is arranged on the main water inlet pipe (316); a filtering and pressure reducing valve (311), a precision filter (312) and an electric control proportion pressure regulating valve (313) are installed in the cooling system control box (31), the filtering and pressure reducing valve (311) is communicated with a main air inlet pipe (315) and communicated with the precision filter (312), the precision filter (312) is communicated with the electric control proportion pressure regulating valve (313), and the electric control proportion pressure regulating valve (313) is connected with an air pipe branch pipeline (318) at a second air pipe connector (314) through a pipeline.
2. A hot formed steel sheet rolling line according to claim 1, characterized in that: the forming roller (1) is provided with a plurality of forming rollers which are sequentially arranged in sequence, and each forming roller consists of a forming upper roller and a forming lower roller which are matched with each other.
3. A hot formed steel sheet rolling line according to claim 2, characterized in that: the electromagnetic induction heaters (22) are arranged in a plurality, and one electromagnetic induction heater is connected with one induction heating power supply to heat the steel plate raw plate (5) step by step.
4. A hot formed steel sheet rolling line according to claim 3, characterized in that: the cooling device (32) is provided with at least one cooling device, each cooling device comprises a plurality of spray heads, the number of the first air pipe connectors (323), the first water pipe connectors (324) and the number of the branches of the air pipe branch pipelines (318) and the water pipe branch pipelines (319) are consistent with the number of the spray heads (326), and the number of the electric control proportion pressure regulating valves (313), the number of the second air pipe connectors (314) and the number of the second water pipe connectors (317) are consistent with the number of the cooling device (32).
5. The hot formed steel sheet rolling line according to claim 4, characterized in that: the shape correction positioning rollers (4) are provided with multiple stages, the multiple stages of shape correction positioning rollers are sequentially arranged, and each stage of shape correction positioning roller consists of a shape correction positioning upper roller and a shape correction positioning lower roller which are matched with each other.
6. A production method of a hot formed steel sheet rolling line according to claim 5, characterized in that: the production method specifically comprises the following steps:
the method comprises the following steps of firstly, conveying a steel plate raw plate (5) to a forming roller (1), and realizing the change of the shape of the steel plate raw plate (5) under the extrusion of a forming upper roller and a forming lower roller, wherein at the moment, the steel plate raw plate (5) is bent and the radius of a bottom fillet is reduced, and the forming of the steel plate raw plate (5) is completed through the extrusion of a plurality of forming rollers;
the forming method comprises the following steps that when a steel plate raw plate (5) deforms at a forming roller (1), the formed steel plate continuously enters a heating system (2), alternating current generated by an induction heating power supply (21) passes through an electromagnetic induction heater (22) and generates an alternating magnetic field, the steel plate is rapidly heated by the electromagnetic induction heater (22), and the steel plate raw plate (5) is gradually heated and accumulated to the final temperature required by production due to the fact that the electromagnetic induction heaters (22) are arranged in plurality; in the heating process, the temperature sensor detects the temperature condition of the steel plate during each stage of heating, and regulates and controls the heating temperature of each stage according to production needs;
the heated steel plate raw plate (5) is continuously conveyed to a cooling system (3) through a heating conveying roller (23), the steel plate raw plate (5) enters a box body (320) of the cooling device through an opening (322), meanwhile, a cooling system control box (31) sends gas and cooling water to a spray head (326), the gas and the cooling water are fully mixed in the spray head (326), and finally, an atomized water curtain is sprayed out from the spray head (326) to cool the steel plate raw plate (5); because the plurality of cooling devices (32) are arranged, the steel plate raw plate (5) is cooled step by step in the process of passing through the cooling system (3);
the cooled steel plate raw plate (5) is continuously transported to the position of the shape correcting positioning roller (4) through the cooling conveying roller (33), the shape correcting positioning roller (4) corrects the deformation which is not in accordance with the standard and is generated by the steel plate raw plate (5), and the whole hot forming steel plate rolling production is completed.
7. The production method of a hot formed steel sheet rolling line according to claim 6, characterized in that: in the cooling process, the control process that the cooling system control box (31) sends gas and cooling water to the spray head (326) is as follows:
gas enters the filtering and reducing valve (311) from the main gas inlet pipe (315), the filtering and reducing valve (311) performs coarse filtering on the gas, and the pressure of the gas is adjusted to a stable value; then, the gas is finely filtered by a precision filter (312), so that the influence of impurities in the gas on the forming quality of the steel plate raw plate is avoided; the finely filtered gas is proportionally introduced into the gas pipe branch pipeline (318) through the electric control proportional pressure regulating valve (313) according to production requirements and then enters the spray head (326) through the spray head gas inlet pipe (328);
meanwhile, cooling water enters from a main water inlet pipe (316), constant water inlet pressure is controlled by a pressure water pump, and then enters a spray head water inlet pipe (329) through a water pipe branch pipeline (319) so as to enter a spray head (326); the cooling water and the gas inner spray (326) are fused and collided, and finally a water curtain is sprayed out to cool the steel plate raw plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010344180.0A CN111496107A (en) | 2020-04-27 | 2020-04-27 | Hot-forming steel plate rolling production line and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247381A (en) * | 2020-08-21 | 2021-01-22 | 长春理工大学 | Guiding preheating and stress-relieving dynamic shape correcting device for thin-wall cylinder laser welding longitudinal joint |
| CN115430555A (en) * | 2022-08-31 | 2022-12-06 | 四川国软科技集团有限公司 | Steel plate pretreatment system and method |
-
2020
- 2020-04-27 CN CN202010344180.0A patent/CN111496107A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247381A (en) * | 2020-08-21 | 2021-01-22 | 长春理工大学 | Guiding preheating and stress-relieving dynamic shape correcting device for thin-wall cylinder laser welding longitudinal joint |
| CN112247381B (en) * | 2020-08-21 | 2022-08-16 | 长春理工大学 | Guiding preheating and stress-relieving dynamic shape correcting device for thin-wall cylinder laser welding longitudinal joint |
| CN115430555A (en) * | 2022-08-31 | 2022-12-06 | 四川国软科技集团有限公司 | Steel plate pretreatment system and method |
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