CN114700376A - Low-energy-consumption continuous casting billet direct rolling process method - Google Patents

Abstract

The invention relates to the technical field of continuous casting billet direct rolling, and proposes a low-energy-consumption continuous casting billet direct rolling process method, which is integrated into a smart module, realizes intelligent monitoring of continuous casting quality, facilitates the traceability management of steel quality, and ensures continuous continuous casting quality. In the production process of direct casting and rolling, the rolling control effect is good, and the continuous casting billet that detects the problem can be removed in time, and the removed continuous casting billet can be rolled on-line again. The billet continuous casting machine, the steel rolling workshop and the steel making workshop, the billet unloading continuous casting machine is installed in the steel making workshop, the billet unloading continuous casting machine is provided with the billet roll table section on the left side, and the billet roll table section is set on the lower side with the billet roll table section. In the roller bottom holding furnace, an automatic cutting device is installed on the left side of the billet discharge roller section, and a lifting platform is installed on the left side of the automatic cutting device. A heating furnace is installed on the left side of the unloading bed and the lifting platform.

Description

A low-energy-consumption continuous casting billet direct rolling process method

technical field

The invention relates to the technical field of continuous casting billet direct rolling, in particular to a low-energy-consumption continuous casting billet direct rolling process method.

Background technique

As we all know, in the hot rolling production process, a lot of energy needs to be consumed, and the proportion of this energy consumption is actually used in the steel rolling process, while the energy consumption in the billet heating process accounts for a huge proportion. In order to reduce energy consumption, reduce Production cost, continuous casting billet hot rolling is proposed, and the technology is becoming more and more mature with continuous utilization, but with the rapid development of science and technology and the continuous improvement of energy saving and environmental protection requirements, a low-energy continuous casting billet direct rolling is proposed. The process method is used to assist in further optimizing the continuous casting billet direct rolling process.

After retrieval, the Chinese invention patent with the announcement number CN105080968B, which was authorized and announced on October 27, 2017, discloses a continuous casting billet rolling method for super duplex stainless steel, which is roughly described as including the production of continuous casting billets and the The continuous casting billet is air-cooled, the continuous casting billet is put into the first preheating furnace for preheating treatment, the preheated continuous casting billet is subjected to air cooling treatment, and the continuous casting billet is put into the second preheating furnace for Preheating treatment, air cooling the preheated continuous casting billet, put the continuous casting billet into the grinding machine for full grinding treatment, put the continuous casting billet into the heating furnace for heating treatment, and transport the continuous casting billet to the The steps of rolling in the rolling mill and putting the continuous casting slab into the first preheating furnace for preheating treatment include: before placing the continuous casting slab, raising the temperature in the first preheating furnace to 350°C-450°C ; After placing the continuous casting billet, the temperature in the first preheating furnace is raised to 700℃-800℃ at a rate of 50-80℃/h, and the temperature is kept for 4.5h, and the continuous casting billet is placed in the second preheating furnace. The step of preheating treatment in the furnace includes: before placing the continuous casting billet, raising the temperature in the second preheating furnace to 900°C-1100°C; after placing the continuous casting billet, heating the second preheating furnace The temperature rises to 1220°C-1260°C at a rate of 80°C-100°C/h, and is kept for 7.5h, and the Chinese invention patent published on August 3, 2018 with publication number CN108356076A discloses a continuous casting billet The rolling method, the general technical scheme of which is: the high-temperature continuous casting billet from the continuous casting process is tempered by a tempering medium and then enters a rolling mill for rolling. The tempering medium is atomized water or compressed gas, and the tempering medium passes through the rolling mill. The temperature-adjusting medium injection device is sprayed on the surface of the high-temperature continuous casting billet. The temperature-adjusting medium injection device includes a temperature-adjusting medium pipeline, a temperature-adjusting medium nozzle and an automatic adjustment valve, and an automatic adjustment valve is provided on the temperature-adjusting medium pipeline. Valves and a plurality of temperature-adjusting medium nozzles, the temperature-adjusting medium nozzles are evenly arranged along the four surfaces of the high-temperature continuous casting billet, and the beneficial effects of the present invention are: the high-temperature continuous casting billet from the continuous casting process, after the temperature adjustment , reduce the surface temperature difference between the head and tail of the high-temperature continuous casting billet, and then send it to the rolling mill for rolling, which improves the performance stability of the rolled material and effectively guarantees the product quality.

Although the above-mentioned prior art solution can realize the direct rolling of the continuous casting billet, in the production process of the continuous casting and direct rolling, the control effect on the rolling quality is poor, and only the production of the continuous casting and direct rolling can be realized, and the use is flexible. poor.

SUMMARY OF THE INVENTION

(1) Technical problems solved

In view of the deficiencies of the prior art, the present invention provides a low-energy-consumption continuous casting billet direct rolling process method, which integrates intelligent modules to realize intelligent monitoring of continuous casting quality, facilitates the traceability management of steel quality, and enables continuous casting to directly In the rolling production process, the rolling control effect is good, the continuous casting billet that detects the problem can be removed in time, and the removed continuous casting billet can be rolled on-line again, and the use flexibility is good.

(2) Technical solutions

In order to achieve the above purpose, the present invention provides the following technical solutions: a low-energy-consumption continuous casting billet direct rolling process method is realized based on a continuous casting billet direct rolling production line, and a continuous casting billet direct rolling production line includes a billet unloading continuous casting machine. , and also includes a steel rolling workshop and a steelmaking workshop, wherein the billet casting machine is installed in the steelmaking workshop, and a billet roll table section is provided on the left side of the billet roll caster. A roller bottom heat preservation furnace is arranged on the lower side of the bottom side, and an automatic cutting device is arranged on the left side of the billet rolling section. The traversing table section is equipped with the blank blanking bed in question, and the heating furnace is installed on the left side of the lifting table. The billet unloading bed and the heating furnace are both arranged in the steelmaking workshop. The steelmaking workshop is equipped with a cold billet loading table, and an auxiliary heating furnace is arranged between the cold billet loading table and the problem billet unloading bed. A smart module is installed in the steel making workshop, wherein the steel rolling workshop is located on the left side of the steel making workshop, the steel rolling workshop and the steel making workshop are connected to each other, and a multi-stage rolling roll group is installed in the steel rolling workshop.

Preferably, based on the foregoing solution, the intelligent module includes a multi-level detection terminal, the multi-level detection terminal is connected with a communication module, the communication module is connected with an intelligent module, and the intelligent module is connected with a command issuing module, so The automatic cutting device, the lifting platform and the traversing platform are all communicated with the command issuing module.

Further on the basis of the foregoing solution, the steelmaking workshop is provided with conveying moving rollers matched with the traversing gantry and the heating furnace.

Further on the basis of the foregoing solution, the blanking roller table section is positioned above the roller bottom holding furnace through a mounting frame bracket.

Further on the basis of the aforementioned solution, a bidirectional conveying roller group is arranged between the cold blank feeding table and the problem blank discharging bed.

As a further aspect of the above solution, a lift turntable is provided on the blanking bed of the problematic blank.

A low-energy-consumption continuous casting billet direct rolling process method, comprising the following steps:

S1. During the operation, the continuous casting machine realizes the production of continuous casting blanks;

S2. The billet produced by the unloading continuous casting machine is transported through the billet rolling table section. During this process, the roll bottom holding furnace keeps the billet warm, and the smart module detects the passed billet;

S3. The cutting device and the lifting platform receive the detection data of the smart module, cut off the problematic blanks and remove them from the production line;

S4. The blank without problem enters the heating furnace, and after being heated by the heating furnace, it enters the multi-stage rolling roll group to complete the rolling;

S5. The blank in question enters the unloading bed of the problematic blank under the action of the traversing gantry, and then enters the cold blank loading table for fine inspection. If the problem of the blank does not affect the production, the auxiliary heating furnace is heated and then enters the problematic blank again. The blanking bed is controlled to enter the traversing gantry to reversely move the material and then enter the heating furnace to heat up again to complete the subsequent rolling. If the problem of the billet affects the production, the billet is removed and discarded.

(3) Beneficial effects

Compared with the prior art, the present invention provides a low-energy-consumption continuous casting billet direct rolling process method, which has the following beneficial effects:

1. In the present invention, through the integration of intelligent modules, the continuous casting billet passing through the billet discharge roller table can be detected online, so as to realize the intelligent monitoring of the continuous casting quality, and facilitate the traceability management of the steel quality. In the rolling production process, the rolling control effect is better.

2. In the present invention, through the cooperation of the lifting platform, the traversing platform and the blanking bed of the problem billet, the continuous casting billet that has detected the problem can be removed in time, and the steel produced by the continuous casting billet can be better guaranteed. the quality of.

3. In the present invention, through the installation of the cold billet loading table, it is convenient to realize the reverse feeding of the cold billet, and the removed continuous casting billet can be rolled on-line again, and the use flexibility is good.

Description of drawings

1 is a schematic diagram of the overall three-dimensional structure of the present invention;

Fig. 2 is the rolling flow chart of the present invention;

Fig. 3 is the flow chart of reverse rolling and feeding of cold billet according to the present invention;

FIG. 4 is a schematic diagram of the framework of the smart module of the present invention.

In the picture: 1. Continuous casting machine; 2. Steel rolling workshop; 3. Steel-making workshop; 4. Roller section; 5. Roll bottom holding furnace; 6. Cutting device; 9. Problem blank blanking bed; 10. Heating furnace for heating; 11. Cold blank feeding table; 12. Auxiliary heating furnace; 13. Conveying moving rollers; 14. Mounting frame; 15. Bidirectional conveying roller group 16. Lift the turntable.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example

Please refer to Fig. 1-4, a low-energy-consumption continuous casting slab direct rolling process method is realized based on a continuous casting slab direct rolling production line. Workshop 2 and steelmaking workshop 3, the blanking continuous casting machine 1 is installed in the steelmaking workshop 3, and the blanking rolling table section 4 is provided on the left side of the blanking continuous casting machine 1. The blanking rolling table section 4 The bottom side of the blank is provided with a roller bottom holding furnace 5, the billet rolling section 4 is supported above the roll bottom holding furnace 5 by the mounting frame 15, and the left side of the billet rolling section 4 is provided with an automatic cutting device 6, so A lift table 7 is installed on the left side of the automatic cutting device 6, and a traverse stage 8 is installed on the lift stage 7, and is located in the 8 section of the traverse stage. A heating furnace 10 is installed, and the blanking roller section 4, the roller bottom holding furnace 5, the automatic cutting device 6, the lifting platform 7, the traversing platform 8, the problem blank blanking bed 9 and the heating furnace 10 are all arranged In the steelmaking workshop 3, through the cooperation of the lifting table 7, the traversing table 8 and the blanking bed 9 of the problem billet, the continuous casting billet that has detected the problem can be removed in time, which can better ensure the continuous casting. For the quality of the steel produced from the billet, the cold billet loading table 12 is installed in the steelmaking workshop 3. The installation of the cold billet loading table 12 facilitates the reverse feeding of the cold billet, and the removed continuous casting billet can be put online again. For rolling, the flexibility of use is good. An auxiliary heating furnace 13 is arranged between the cold billet loading table 12 and the problem billet unloading bed 9, and between the cold billet loading table 12 and the problem billet unloading bed 9 A bidirectional conveying roller group 16 is provided to facilitate bidirectional movement of the blank.

It should be further explained that the steelmaking workshop 3 is equipped with a smart module, the smart module includes a multi-level detection terminal, the multi-level detection terminal is connected with a communication module, and the communication module is connected with an intelligent module, so The intelligent module is communicated with a command issuing module, and the automatic cutting device 6, the lifting platform 7 and the traversing platform 8 are all communicated with the command issuing module. Continuous casting billets are tested online to realize intelligent monitoring of continuous casting quality and facilitate the traceability management of steel quality. In the production process of continuous casting and direct rolling, the rolling control effect is better. The steel rolling workshop 2 is located in the On the left side of the steel-making workshop 3, the steel-rolling workshop 2 and the steel-making workshop 3 are connected to each other, which facilitates the passage of continuous casting steel. The steel rolling workshop 2 is equipped with a multi-stage rolling roll group 11, which can perform multiple operations on the continuous casting steel. The steelmaking workshop 3 is equipped with conveying moving rollers 14 matched with the traversing gantry 8 and the heating furnace 10 to realize the transfer of continuous cast steel between the traversing gantry 8 and the heating furnace 10. , a lifting turntable 17 is arranged on the blanking bed 9 of the problem blank, so as to realize the height adjustment and direction conversion of the problem blank.

A low-energy-consumption continuous casting billet direct rolling process method, comprising the following steps:

S1. During operation, the continuous casting machine 1 realizes the production of continuous casting blanks;

S2. The billet produced by the unloading continuous casting machine 1 is transported through the billet discharge roller table section 4. During this process, the roller bottom holding furnace 5 keeps the billet warm, and the smart module detects the passed billet;

S3. The cutting device 6 and the lifting platform 7 receive the detection data of the smart module, and cut off the problematic blanks and remove them from the production line;

S4, the blank without problem enters the heating furnace 10, and after being heated by the heating furnace 10, enters the multi-stage rolling roll group 11 to complete the rolling;

S5. The blank in question enters the unloading bed 9 of the problematic blank under the action of the traversing table 8 and then enters the cold blank loading table 12 for fine inspection. If the problem of the blank does not affect the production, the auxiliary heating furnace 13 is heated after heating Enter the blanking bed 9 of the problematic billet again, and enter the traversing gantry 8 to reversely move the material through control, and then enter the heating furnace 10 to heat up again to complete the subsequent rolling. If the problem of the billet affects the production, the billet is removed and discarded. deal with.

To sum up, the working principle and working process of the low-energy-consumption continuous casting billet direct rolling process method are as follows: during the operation, the unloading continuous casting machine 1 realizes the production of continuous casting billets, and the unloading continuous casting machine 1 produces the continuous casting billet. The outgoing blanks are transported through the blanking roller table section 4. During this process, the roller bottom holding furnace 5 keeps the blanks warm, and the intelligent module detects the passed blanks. The problematic billets are cut off and removed from the production line. The non-problematic billets enter the heating furnace 10, and after being heated in the heating furnace 10, they enter the multi-stage rolling roll group 11 to complete the rolling. Under the action of 8, it enters the unloading bed 9 of the problem billet after cooling, and then enters the cold billet loading table 12 for fine inspection. If the problem of the billet does not affect the production, the auxiliary heating furnace 13 is heated and then enters the unloading bed 9 of the question billet again, and passes through After the control enters the traversing table 8 to move the material in the reverse direction, it enters the heating furnace 10 again to heat up to complete the subsequent rolling. If the problem of the billet affects the production, the billet is removed and discarded.

Further, the heating furnace 10 and the auxiliary heating furnace 13 can share one. When the two share one, a heat-resistant track is laid under the heating furnace, and the heating furnace is erected on the track through the wheel set. Through the bidirectional movement of the heating furnace on the track, the heating furnace can be heated under the conveying moving rollers 14 or the auxiliary heating under the two-way conveying roller group 16 can be realized. The unit can choose an electric telescopic rod or a pneumatic telescopic rod. When it is an electric telescopic rod, it needs to be equipped with a matching cooling system. When it is a pneumatic telescopic rod, it needs to be equipped with an air pump, air pipe and air circuit system.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The continuous casting billet direct rolling production line comprises a billet withdrawal continuous casting machine (1), and is characterized by further comprising a steel rolling workshop (2) and a steel making workshop (3), wherein the steel rolling workshop (2) and the steel making workshop (3)

The steel-making workshop is characterized in that the knockout continuous casting machine (1) is installed in the steel-making workshop (3), a knockout roller way section (4) is arranged on the left side of the knockout continuous casting machine (1), a roller bottom heat preservation furnace (5) is arranged on the lower side of the knockout roller way section (4), an automatic cutting device (6) is arranged on the left side of the knockout roller way section (4), a lifting table (7) is installed on the left side of the automatic cutting device (6), a transverse moving rack (8) is installed on the lifting table (7), a problem blank blanking bed (9) is matched with the transverse moving rack (8), a heating furnace (10) is installed on the left side of the lifting table (7), and the knockout roller way section (4), the roller bottom heat preservation furnace (5), the automatic cutting device (6), the lifting table (7), the transverse moving rack (8), the problem blank blanking bed (9) and the heating furnace (10) are uniformly distributed in the steel-making workshop (3), a cold blank feeding table (11) is installed in the steelmaking workshop (3), an auxiliary heating furnace (12) is arranged between the cold blank feeding table (11) and the problem blank blanking bed (9), an intelligent module is installed in the steelmaking workshop (3), wherein

The steel rolling workshop (2) is located on the left side of the steel-making workshop (3), the steel rolling workshop (2) is communicated with the steel-making workshop (3), and a multistage rolling roller set (11) is installed in the steel rolling workshop (2).

2. The continuous casting billet direct rolling production line according to claim 1, characterized in that the intelligent module comprises a plurality of detection terminals, the plurality of detection terminals are communicated with a communication module, the communication module is communicated with an intelligent module, the intelligent module is communicated with an order issuing module, and the automatic cutting device (6), the lifting platform (7) and the transverse moving rack (8) are communicated with the order issuing module.

3. A continuous casting billet direct rolling production line according to claim 2, characterized in that a conveying moving roller (13) matched with the transverse moving rack (8) and the heating furnace (10) is arranged in the steelmaking workshop (3).

4. A continuous casting billet direct rolling production line according to claim 3, characterized in that the knockout roller way section (4) is supported above the roller hearth holding furnace (5) through a mounting frame (14).

5. A continuous casting billet direct rolling production line according to claim 4, characterized in that a bidirectional conveying roller set (15) is arranged between the cold billet feeding table (11) and the defective billet blanking bed (9).

6. A continuous casting billet direct rolling production line according to claim 5, characterized in that a lifting rotary table (16) is arranged on the defective billet blanking bed (9).

7. A low-energy-consumption continuous casting billet direct rolling process method is characterized in that the continuous casting billet direct rolling production line according to any one of claims 1 to 6 is used, and comprises the following steps:

s1, in the operation process, the knockout conticaster (1) realizes the production of the continuously cast blank;

s2, transferring the blank produced by the blank-discharging continuous casting machine (1) through a blank-discharging roller way section (4), in the process, insulating the blank by a roller bottom insulating furnace (5), and detecting the passing blank by an intelligent module;

s3, the cutting device (6) and the lifting platform (7) receive the detection data of the intelligent module, and cut off and move out of the production line for the blank with problems;

and S4, feeding the blank without problems into a heating furnace (10), heating the blank by the heating furnace (10), and feeding the blank into a multi-stage rolling roller group (11) to finish rolling.

S5, feeding the blank with the problem into a blank discharging bed (9) with the problem under the action of the transverse moving rack (8), cooling, feeding the blank into a blank cold feeding bed (12) for fine inspection, heating by an auxiliary heating furnace (13) and then feeding the blank into the blank discharging bed (9) with the problem again if the blank problem does not affect production, controlling the blank to reversely move the blank into the transverse moving rack (8) and then feeding the blank into a heating furnace (10) for heating, completing subsequent rolling, and discharging the blank for waste treatment if the blank problem affects production.

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