CN218925720U - Production process line for rod and wire - Google Patents

Abstract

The utility model belongs to the technical field of rod and wire production, and particularly provides a rod and wire production process line which comprises a continuous casting machine, a parallel rail roller way, a blank feeding buffer plate, a blank moving machine, a charging roller way, a heating furnace, a discharging roller way, a cogging machine, a stokehold roller way, a secondary compensation heating furnace, a secondary discharging roller way, a blooming unit, a middle rolling unit, a finishing rolling unit, a reducing sizing unit, a buffering roller way after rolling, a cooling bed, a wire laying machine and an air cooling line.

Description

Production process line for rod and wire

Technical Field

The utility model belongs to the technical field of rod and wire production, and particularly relates to a rod and wire production process line.

Background

The rod wire as a pillar product of steel products plays an important role in national economy, is widely used in industries such as construction, machinery, aerospace and the like, has large industrial span and multiple product specifications, and needs to formulate different production processes for different products. The traditional bar and wire production line excessively pursues heating-free direct rolling, the production process line is only used for carrying out corresponding one-fire forming process arrangement for one or a few general-quality bar and wire production, the production specification of the set production line is single, no space for two-fire forming process arrangement is reserved, the bar and wire with corresponding high-quality requirements cannot be flexibly produced according to market demands, and the two-fire forming process effectively realizes the improvement of the grain size and the surface quality of the rolled bar and wire, and meets the production process requirements of the high-specification bar and wire.

Chinese patent document publication No. CN110116135B, publication No. 2020, month 4 and 10 discloses a method for endless rolling production of a rod-wire product. The method is implemented by the following production lines: a square billet, a rectangular billet or round billet continuous casting machine, an electromagnetic induction heater, a blooming mill set, a rough rolling mill set, a middle rolling mill set, a finishing mill set and a finishing cooling collecting area; a water spray or water mist cooling device is arranged behind each rolling unit; each production device is connected with the control system to realize automatic control of endless rolling production of the rod and the wire; the adopted endless rolling production method of the rod and wire comprises the following steps: continuous casting, temperature control, blooming and continuous rolling. The reference adopts a blooming mill to roll to realize the matching of continuous casting and continuous rolling speed, and improves the core quality of rolled pieces through large core surface differential temperature rolling. However, the document also does not solve the problem that the production line has single production specification, and the space for arranging the two-fire forming process is not reserved, so that the rod and the wire with corresponding high quality requirements cannot be flexibly produced according to market requirements.

Disclosure of Invention

The utility model provides a production process line for a rod and a wire rod, which aims to solve the problem that the rod and the wire rod with corresponding high quality requirements cannot be flexibly produced according to market demands because the production specification of the production line is single and no space for arrangement of a two-fire forming process is reserved in the prior art.

The utility model provides a rod wire production process line which comprises a continuous casting machine, a parallel rail roller way, a blank conveying buffer plate, a blank transferring machine, a charging roller way, a heating furnace, a discharging roller way, a cogging mill, a front roller way, a secondary compensation heating furnace, a secondary discharging roller way, a blooming mill, a middle rolling mill, a finishing mill, a reducing sizing mill, a post-rolling buffer roller way, a cooling bed, a wire laying machine and an air cooling line, wherein the outlet end of the continuous casting machine is connected with the inlet end of the blank conveying buffer plate through the parallel rail roller way, the outlet end of the blank conveying buffer plate is respectively connected with the inlet end of the discharging roller way and the inlet end of the blank transferring machine, the outlet end of the blank transferring machine is sequentially connected with the inlet end of the discharging roller way through the charging roller way and the heating furnace, the outlet end of the cogging mill, the front roller way, the secondary compensation heating furnace, the secondary discharging roller way, a blooming mill, a middle rolling mill, a reducing mill, a post-rolling buffer roller way, a secondary compensation heating furnace, the secondary discharging roller way, a blooming mill, a finishing mill, a middle rolling mill, a reducing mill, a post-rolling mill and a post-rolling buffer roller way, the cooling mill, the inlet end of the cooling line are sequentially connected with the other end of the cooling roller way, and the outlet end of the buffer plate is sequentially connected with the finishing mill.

Preferably, the blank feeding buffer plate is provided with a temperature detector.

Preferably, the heating furnace is a walking beam type heating furnace.

Preferably, the cogging mill is a two-roll reversible rolling mill.

Preferably, a first flying shear is arranged between the cogging mill and the secondary compensation heating furnace, a second flying shear is arranged between the blooming mill set and the middle rolling mill set, a third flying shear is arranged between the middle rolling mill set and the finishing mill set, and a fourth flying shear is arranged between the reducing sizing mill set and the post-rolling buffer roller way.

Preferably, the secondary compensation heating furnace is a roller hearth heating furnace.

Preferably, the inlet end and the outlet end of the heating furnace and the inlet end and the outlet end of the secondary compensation heating furnace are respectively provided with a temperature detector.

Preferably, the blooming mill set and the middle rolling mill set are composed of 4-6 flat rolling mills which are arranged in a parallel-to-vertical alternating mode, and the blooming mill set and the middle rolling mill set are subjected to non-grooved rolling.

Preferably, the finishing mill group is a 45 ° cantilever type top cross mill.

Preferably, a first imaging machine is arranged between the cogging mill and the first flying shear, a second imaging machine is arranged between the cogging mill set and the second flying shear, a third imaging machine is arranged between the middle rolling mill set and the third flying shear, a fourth imaging machine is arranged between the finishing mill set and the reducing sizing mill set, and a fifth imaging machine is arranged between the reducing sizing mill set and the fourth flying shear.

The utility model has the beneficial effects that:

1. the rod and wire production process line provided by the utility model realizes flexible production of rod and wire rods with various quality requirements according to market requirements by a continuous casting machine, a parallel rail roller way, a blank feeding buffer plate, a blank shifting machine, a charging roller way, a heating furnace, a discharging roller way, a cogging mill, a stokehold roller way, a secondary compensation heating furnace, a secondary discharging roller way, a blooming mill group, a middle rolling mill group, a finishing mill group, a reducing sizing mill group, a post-rolling buffer roller way, a cooling bed, a wire laying machine and an air cooling line, increases the flexibility of the production line and enhances the market competitiveness of the production line; on the premise of realizing one-fire forming continuous casting and rolling process, the capability of a two-fire forming production process is reserved, the two-fire forming can effectively improve microstructure morphology such as component segregation of the rolled material, the surface quality of the product is improved, the significance of improving the fatigue performance of the product is great, and high-quality rod wires of high-end varieties such as steel, cold heading steel and bearing steel can be produced.

2. According to the production process line for the rod and wire, the secondary compensation heating furnace is arranged behind the cogging mill so as to meet the production requirements of steel grades.

3. According to the rod and wire production process line provided by the utility model, a first imaging machine is connected between a cogging mill and a first flying shear, a second imaging machine is connected between a cogging mill set and a second flying shear, a third imaging machine is connected between a middle rolling mill set and a third flying shear, a fourth imaging machine is connected between a finishing mill set and a reducing sizing mill set, and a fifth imaging machine is connected between a reducing sizing mill set and the fourth flying shear; the method is used for monitoring the surface quality of the rolled material in real time so as to intelligently monitor the state of the rolling mill and effectively improve the quality of the rolled material.

4. According to the rod and wire production process line provided by the utility model, the first flying shears are connected between the cogging mill and the secondary compensation heating furnace, the second flying shears are connected between the blooming mill set and the middle rolling mill set, the third flying shears are connected between the middle rolling mill set and the finishing mill set, and the fourth flying shears are connected between the reducing sizing mill set and the post-rolling buffer roller way, so that the rod and wire production process line is used for sizing cutting of rolled materials and steel piling treatment during production line faults.

Drawings

The present utility model will be described in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a wire rod production process line;

FIG. 2 is a process flow diagram of example 2;

FIG. 3 is a process flow diagram of example 3;

FIG. 4 is a process flow diagram of example 4;

FIG. 5 is a process flow diagram of example 5;

FIG. 6 is a process flow diagram of example 6;

FIG. 7 is a process flow diagram of example 7;

reference numerals illustrate: 1. a continuous casting machine; 2. a parallel rail roller way; 3. a blank feeding buffer plate; 4. a blank transferring machine; 5. charging roller way; 6. a heating furnace; 7. discharging the roller way; 8. a cogging mill; 9. a first imaging machine; 10. flying shears I; 11. a furnace front roller way; 12. a secondary compensation heating furnace; 13. a secondary discharging roller way; 14. a blooming mill set; 15. a second imaging machine; 16. flying shears II; 17. a middle rolling mill group; 18. a third imaging machine; 19. flying shears III; 20. a finishing mill group; 21. a fourth imaging machine; 22. reducing sizing mill; 23. a fifth imaging machine; 24. fourth flying shears; 25. buffering a roller way after rolling; 26. a cooling bed; 27. a laying head; 28. and (5) an air cooling line.

Detailed Description

Example 1:

as shown in FIG. 1, a rod wire production process line comprises a continuous casting machine 1, a parallel rail roller way 2, a blank feeding buffer plate 3, a blank transferring machine 4, a charging roller way 5, a heating furnace 6, a discharging roller way 7, a cogging mill 8, a furnace front roller way 11, a secondary compensation heating furnace 12, a secondary discharging roller way 13, a blooming mill 14, a middle rolling mill group 17, a finishing mill group 20, a reducing mill group 22, a post-rolling buffer roller way 25, a cooling bed 26, a wire laying machine 27 and an air cooling line 28, wherein the outlet end of the continuous casting machine 1 is connected with the inlet end of the blank buffering plate 3 through the parallel rail roller way 2, the outlet end of the blank feeding buffer plate 3 is respectively connected with the inlet end of the discharging roller way 7 and the inlet end of the blank transferring machine 4, the outlet end of the blank transferring machine 4 is sequentially connected with the outlet end of the charging roller way 5 and the heating furnace 6, the outlet end of the discharging roller way 7, the cogging mill 8, the secondary compensation heating furnace 12, the secondary discharging roller way 13, the rolling mill group 14, the middle rolling mill group 17, the middle rolling mill group 20, the reducing mill group 22, the finishing mill group 22, the post-rolling mill 25, the finishing mill 25, the cooling mill 26 and the cooling mill group 25, and the tail mill 25 are sequentially connected with the outlet end of the cooling mill group 25, and the cooling mill group 25.

According to the rod and wire production process line provided by the utility model, the secondary compensation heating furnace 12 is arranged behind the cogging mill 8 so as to meet the production requirements of steel grades; the control cooling of the rod and wire is realized by arranging an air cooling line 28 behind the laying head 27; a cooling bed 26 is arranged beside the post-rolling buffer roller way 25 for placing and producing the obtained rod and wire; the continuous casting machine 1, the parallel rail roller way 2, the blank feeding buffer plate 3, the blank moving machine 4, the charging roller way 5, the heating furnace 6, the discharging roller way 7, the cogging mill 8, the stokehold roller way 11, the secondary compensation heating furnace 12, the secondary discharging roller way 13, the blooming mill group 14, the middle rolling mill group 17, the finishing mill group 20, the reducing sizing mill group 22, the post-rolling buffer roller way 25, the cooling bed 26, the wire laying machine 27 and the air cooling line 28 are adopted, so that one production line can flexibly produce bars and wires with various quality requirements according to market requirements, the flexibility of the production line is increased, and the market competitiveness of the production line is enhanced; on the premise of realizing one-fire forming continuous casting and rolling process, the capability of a two-fire forming production process is reserved, the two-fire forming can effectively improve microstructure morphology such as component segregation of the rolled material, the surface quality of the product is improved, the significance of improving the fatigue performance of the product is great, and high-quality rod wires of high-end varieties such as steel, cold heading steel and bearing steel can be produced.

Preferably, the blank feeding buffer plate 3 is provided with a temperature detector. The temperature detector is convenient for detecting the temperature of the continuous casting billet; the temperature detector can select the existing detection devices such as a thermal detector. The temperature detector is connected with a computer terminal, and corresponding settings are effectively set through measuring the temperature of the rolled material.

Preferably, the heating furnace 6 is a walking beam type heating furnace. And the walking beam type heating furnace has stable blank ejection.

Preferably, the cogging mill 8 is a two-roll reversible rolling mill. The two-roller reversible rolling mill has the advantages of low-speed steel biting, high-speed steel rolling, large rolling reduction and high yield.

Preferably, a first flying shear 10 is arranged between the cogging mill 8 and the secondary compensation heating furnace 12, a second flying shear 16 is arranged between the blooming mill set 14 and the middle rolling mill set 17, a third flying shear 19 is arranged between the middle rolling mill set 17 and the finishing mill set 20, and a fourth flying shear 24 is arranged between the reducing sizing mill set 22 and the post-rolling buffer roller way 25. The method is used for steel piling treatment when the cutting scale of the rolled material and the production line are in fault.

Preferably, the secondary compensation furnace 12 is a roller hearth furnace. The roller hearth type heating furnace is adopted, external force transmission is not needed when the rolled material is conveyed in the area, energy conservation and environmental protection can be achieved, and the roller hearth type heating furnace can be matched with a production line.

Preferably, the inlet end and the outlet end of the heating furnace 6 and the inlet end and the outlet end of the secondary compensation heating furnace 12 are respectively provided with a temperature detector. The temperature measurement is convenient, and the precision is improved.

Preferably, the blooming mill set 14 and the intermediate mill set 17 are composed of 4-6 flat-rolling mills which are arranged in a flat-over manner, and the blooming mill set 14 and the intermediate mill set 17 adopt non-grooved rolling. The production organization is flexible.

Preferably, the finishing train 20 is a 45 ° cantilever roof-top mill. The 45-degree cantilever type top-cross rolling mill has small occupied area, compact structure and high adjustment precision.

Preferably, a first imaging machine 9 is arranged between the cogging mill 8 and the first flying shear 10, a second imaging machine 15 is arranged between the cogging mill set 14 and the second flying shear 16, a third imaging machine 18 is arranged between the middle rolling mill set 17 and the third flying shear 19, a fourth imaging machine 21 is arranged between the finishing mill set 20 and the reducing sizing mill set 22, and a fifth imaging machine 23 is arranged between the reducing sizing mill set 22 and the fourth flying shear 24. The method is used for monitoring the surface quality of the rolled material in real time so as to intelligently monitor the state of the rolling mill and effectively improve the quality of the rolled material. The first imaging machine 9, the second imaging machine 15, the third imaging machine 18, the fourth imaging machine 21 and the fifth imaging machine 23 are all connected with a computer terminal, and real-time feedback adjustment can be carried out on the dimension specification of the rolled material.

Preferably, the reducing mill 22 is provided with a roll gap adjustment device; the roll gap adjusting device adopts the existing device, and can control and adjust the roll gap of the reducing sizing mill on line, so that flexible production of multi-specification products is realized under hydraulic pressure. The finishing mill train 20 and the reducing mill train 22 each employ an independent drive train that employs existing equipment and is not described in detail herein.

Example 2:

based on the embodiment 1, as shown in fig. 2, a rod and wire production process line is adopted to produce the rod and wire which needs to be cold detected, then is put into a furnace and needs to be formed by two fires (special quality), specifically: after continuous casting blanks are drawn and formed by a continuous casting machine 1, the continuous casting blanks are transferred to a blank feeding buffer plate 3 by a parallel rail roller way 2, formed blanks on the blank feeding buffer plate 3 are transferred to corresponding positions by a blank moving machine 4 to be cooled and inspected, the blanks subjected to cooling and inspection are loaded into a heating furnace 6 by a charging roller way 5 to be heated to corresponding temperatures, the heated blanks are transferred to a cogging machine 8 by a tapping roller way 7, the blanks subjected to cogging are cut to a fixed size by a first flying shear 10, the cut blanks are then transferred to a secondary compensation heating furnace 12 by a stokehold roller way 11 to carry out secondary heat compensation so as to meet the requirement of two-fire forming, the blanks are then transferred to a blooming mill 14 by a secondary tapping roller way 13, the blooming mill 14, a middle rolling mill 17, a finishing mill 20 and a reducing mill 22 in sequence, the rolled bars and wires are subjected to sizing by a fourth flying shear 24 and then are transferred to a wire laying machine 27 for wire forming after rolling, and then are packaged after being cooled in a controlled manner so as to obtain qualified products.

Example 3:

on the basis of example 1, as shown in fig. 3, a rod and wire production process line is adopted to produce a rod and wire which does not need cold inspection and re-rolling forming but needs two-fire forming (excellent quality), specifically: after a continuous casting blank is drawn and formed by a continuous casting machine 1, the continuous casting blank is transported to a blank feeding buffer plate 3 by a parallel rail roller way 2, a temperature detector on the blank feeding buffer plate 3 carries out temperature measurement on the blank, and if the temperature reaches a cogging temperature, the blank from the blank feeding buffer plate 3 is directly transported to a cogging machine 8 by a tapping roller way 7 for rolling and cogging; if the temperature does not reach the cogging temperature, the blanks from the blank feeding buffer plate 3 are transported to the corresponding positions by the blank moving machine 4, the blanks transported by the blank moving machine 4 are loaded into the heating furnace 6 by the charging roller way 5 to be heated to the corresponding temperature, the heated blanks are transported to the cogging machine 8 by the discharging roller way 7, the blanks after cogging are cut to length by the first flying shears 10, the blanks are sent to the secondary compensation heating furnace by the stokehold roller way 11 to carry out secondary heat compensation so as to meet the requirement of secondary fire forming, the blanks are sent to the blooming mill 14 by the secondary discharging roller way 13, the blooming mill 14, the finishing mill group 20 and the reducing sizing mill group 22 are sequentially used for reducing sizing, the rolled rod wires are transported to the wire-laying machine 27 for wire-laying forming after being rolled by the buffer roller way 25 after being subjected to the sizing by the fourth flying shears 24, and then are packaged and transported after being cooled on the air cooling line 28 to obtain qualified products.

Example 4:

based on the embodiment 1, as shown in fig. 4, a rod and wire production process line is adopted to produce the rod and wire which does not need cold inspection and rolling forming and does not need two-fire forming (high specification), specifically: after a continuous casting blank is drawn and formed by a continuous casting machine 1, the continuous casting blank is transported to a blank feeding buffer plate 3 by a parallel rail roller way 2, the temperature of the blank is measured by a temperature detector on the blank feeding buffer plate 3, if the temperature reaches the rolling temperature, the blank coming out of the blank feeding buffer plate 3 is directly conveyed to a blooming mill 14 for rolling by a discharging roller way 7, a blooming mill 8, a stokehold roller way 11 and a secondary compensation heating furnace 12, and a secondary discharging roller way 13; if the temperature does not reach the cogging temperature, the blank from the blank feeding buffer plate 3 is transported to a corresponding position by the blank moving machine 4, the transported blank is loaded into the heating furnace 6 by the charging roller way 5 and heated to the corresponding temperature, the heated blank is transported to the cogging machine 8 by the discharging roller way 7, is transported to the blooming mill 14 by the stokehold roller way 11 and the secondary compensation heating furnace 12, is rolled by the secondary discharging roller way 13, is subjected to rough rolling by the blooming mill 14, is rolled by the middle rolling mill 17, is subjected to finish rolling by the finishing mill 20 and is subjected to reducing sizing by the reducing sizing mill 22, and the rolled rod wire is subjected to sizing by the fourth flying shear 24, is transported to the front wire-laying forming by the rolling buffer roller way 25 to the wire-laying machine 27, is subjected to control cooling on the air cooling line 28 to obtain qualified products, is packaged and is then collected for transportation.

In the embodiment, the cogging mill 8 is only used as a blank transferring channel and does not participate in blank deformation; the temperature of the secondary compensation heating furnace 12 is set to the bloom temperature of the bloom, and the bloom does not stay in the secondary compensation heating furnace 12.

Example 5:

based on the embodiment 1, as shown in fig. 5, a rod and wire production process line is adopted to produce the rod and wire which needs to be cold detected, then is put into a furnace and needs to be formed by two fires, specifically:

after continuous casting blanks are drawn and formed by a continuous casting machine 1, the blanks are transferred to a blank feeding buffer plate 3 by a parallel rail roller way 2, blanks from the blank feeding buffer plate 3 are transferred to corresponding positions by a blank moving machine 4 to be cooled and inspected, the blanks after transfer and inspection are loaded into a heating furnace 6 by a charging roller way 5 to be heated to corresponding temperatures, the heated blanks are transferred to a cogging machine 8 by a discharging roller way 7, the blanks after cogging are subjected to sizing by a first fly shear 10, then are transferred to a secondary compensation heating furnace 12 by a stokehold roller way to carry out secondary heat compensation so as to meet the requirement of two-fire forming, and are sequentially subjected to rough rolling by the initial rolling unit 14, finish rolling by a middle rolling unit 17 and reducing sizing by a sizing reducing unit 22 before being transferred to the initial rolling unit 14, rolled bars and wires are transferred to a cooling bed 26 by a fourth fly shear 24 after sizing by a rolling buffer 25, and are packaged and are then subjected to controlled cooling on the cooling bed 26 so as to obtain qualified products, and are collected and transported.

Example 6:

based on the embodiment 1, as shown in fig. 6, a rod and wire production process line is adopted to produce the rod and wire which does not need cold inspection and re-rolling forming but needs two-fire forming in the production process, specifically:

after a continuous casting blank is drawn and formed by a continuous casting machine 1, the continuous casting blank is transported to a blank feeding buffer plate 3 by a parallel rail roller way 2, the temperature of the blank is measured by a temperature detector on the blank feeding buffer plate 3, and if the temperature reaches the cogging temperature, the blank discharged from the blank feeding buffer plate 3 is directly transported to a cogging machine 8 by a tapping roller way 7 for rolling and cogging; if the temperature does not reach the cogging temperature, the blank from the blank feeding buffer plate 3 is transported to the corresponding position by the blank moving machine 4, the transported blank is loaded into the heating furnace 6 by the charging roller way 5 to be heated to the corresponding temperature, the heated blank is transported to the cogging machine 8 by the discharging roller way 7, the blank after the cogging is cut to length by the first flying shear 10, the blank is sent into the secondary compensation heating furnace 12 by the stokehold roller way 11 to carry out secondary heat compensation so as to meet the requirement of secondary fire forming, the blank is sent to the initial rolling mill 14 by the secondary discharging roller way 13, the initial rolling mill 14, the finishing mill 17, the finishing mill 20 and the reducing sizing mill 22 are sequentially carried out for reducing sizing, the rolled rod wire is transported to the cooling bed 26 by the buffering roller way 25 after the fourth flying shear 24 is fixed in length, and then the cooling bed 26 is controlled and cooled to obtain qualified products, and the qualified products are packaged and then are collected and transported.

Example 7:

based on the embodiment 1, as shown in fig. 7, a rod and wire production process line is adopted to produce the rod and wire which does not need cold inspection and rolling forming and does not need two-fire forming (general purpose), specifically:

after continuous casting blanks are drawn and formed by a continuous casting machine 1, the continuous casting blanks are transported to a blank feeding buffer plate 3 by a parallel rail roller way 2, temperature measurement is carried out on the blanks by a temperature detector on the blank feeding buffer plate 3, if the temperature reaches rolling temperature, the blanks coming out of the blank feeding buffer plate 3 are directly subjected to rough rolling by the initial rolling unit 14, a roughing mill 8, a stoker 20, a secondary compensating roller hearth type heating furnace 12 and a tapping roller way 13 in sequence, are transported to the initial rolling unit 14 for rolling, if the temperature does not reach the cogging temperature, the blanks are transported to corresponding positions by a blank moving machine 4, are then loaded into a heating furnace 6 by a charging roller way 5, are heated to corresponding temperatures, the blanks are transported to the initial rolling unit 14 by the tapping roller way 7, the stoker 11, the secondary compensating heating furnace 12 and the secondary tapping roller way 13, are subjected to rough rolling by the initial rolling unit 14, the intermediate rolling unit 17, the finish rolling by the finishing rolling unit 20 and a sizing reducing roller 22, the rolled bar is subjected to sizing by a four-number fly shear 24 for sizing, and is transported to a corresponding position by a four-flying shear 24, and is then transported to a cold rolling mill 26 for cooling by a cooling roller way for cooling and is controlled to be cooled and packaged to pass through a cooling roller bed 26.

In the embodiment, the cogging mill 8 is only used as a blank transferring channel and does not participate in blank deformation; the temperature of the secondary compensation heating furnace 12 is set to the bloom temperature of the bloom, and the bloom does not stay in the secondary compensation heating furnace 12.

In the description of the present utility model, it should be understood that, if any, the orientation or positional relationship indicated by the terms or the like is based on the orientation or positional relationship shown in the drawings, rather than indicating or implying that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore the terms describing positional relationship in the drawings are merely for illustrative purposes and are not to be construed as limiting the present utility model.

The foregoing examples are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model, and all designs that are the same or similar to the present utility model are within the scope of the present utility model.

Claims (10)

1. A stick wire rod production technology line, its characterized in that: the continuous casting machine comprises a continuous casting machine (1), a parallel rail roller way (2), a blank feeding buffer plate (3), a blank moving machine (4), a charging roller way (5), a heating furnace (6), a discharging roller way (7), a cogging machine (8), a front roller way (11), a secondary compensation heating furnace (12), a secondary discharging roller way (13), a blooming mill set (14), a middle rolling mill set (17), a finishing mill set (20), a reducing sizing mill set (22), a post-rolling buffer roller way (25), a cooling bed (26), a wire laying machine (27) and an air cooling line (28), wherein the outlet end of the continuous casting machine (1) is connected with the inlet end of the blank feeding buffer plate (3) through the parallel rail roller way (2), the outlet end of the blank feeding buffer plate (3) is respectively connected with the inlet end of the discharging roller way (7) and the inlet end of the blank moving machine (4), and the outlet end of the blank moving roller way (4) are sequentially connected with the inlet end of the discharging roller way (7) through the charging roller way (5) and the heating roller way (6), the outlet end of the blank discharging roller way (7), the outlet end of the cogging mill set (8), the front roller way (11), the finishing mill set (20), the outlet end of the blank discharging mill set (8), the finishing mill set (20), the blank feeding mill set (8), the finishing mill set (17, and the final rolling mill set (20) The secondary compensation heating furnace (12), the secondary discharging roller way (13), the blooming mill group (14), the middle rolling mill group (17), the finishing mill group (20), the reducing sizing mill group (22) and the inlet end of the post-rolling buffer roller way (25) are sequentially connected, one path of the outlet end of the post-rolling buffer roller way (25) is sequentially connected with the wire laying machine (27) and the air cooling line (28), and the other path of the outlet end of the post-rolling buffer roller way (25) is connected with the cooling bed (26).

2. The rod and wire production process line according to claim 1, wherein: the blank feeding buffer plate (3) is provided with a temperature detector.

3. The rod and wire production process line according to claim 1, wherein: the heating furnace (6) is a walking beam type heating furnace.

4. The rod and wire production process line according to claim 1, wherein: the cogging mill (8) is a two-roll reversible rolling mill.

5. The rod and wire production process line according to claim 1, wherein: a first flying shear (10) is arranged between the cogging mill (8) and the secondary compensation heating furnace (12), a second flying shear (16) is arranged between the blooming mill set (14) and the middle rolling mill set (17), a third flying shear (19) is arranged between the middle rolling mill set (17) and the finishing mill set (20), and a fourth flying shear (24) is arranged between the reducing sizing mill set (22) and the post-rolling buffer roller way (25).

6. The rod and wire production process line according to claim 1, wherein: the secondary compensation heating furnace (12) is a roller hearth heating furnace.

7. The rod and wire production process line according to claim 1, wherein: the inlet end and the outlet end of the heating furnace (6) and the inlet end and the outlet end of the secondary compensation heating furnace (12) are respectively provided with a temperature detector.

8. The rod and wire production process line according to claim 1, wherein: the initial rolling unit (14) and the middle rolling mill group (17) are composed of 4-6 flat rolling mills which are arranged in a parallel-vertical alternating mode, and the initial rolling unit (14) and the middle rolling mill group (17) are rolled in a non-grooved mode.

9. The rod and wire production process line according to claim 1, wherein: the finishing mill group (20) is a 45-degree cantilever type top cross mill.

10. The rod and wire production process line according to claim 5, wherein: the novel high-precision rolling mill is characterized in that a first imaging machine (9) is arranged between the cogging mill (8) and a first flying shear (10), a second imaging machine (15) is arranged between the cogging mill set (14) and a second flying shear (16), a third imaging machine (18) is arranged between the middle rolling mill set (17) and a third flying shear (19), a fourth imaging machine (21) is arranged between the finishing mill set (20) and a reducing sizing set (22), and a fifth imaging machine (23) is arranged between the reducing sizing set (22) and a fourth flying shear (24).

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