Normalizing furnace compatible with oriented silicon steel and non-oriented silicon steel and normalizing treatment method

Abstract

The invention relates to the technical field of silicon steel normalizing treatment furnaces, in particular to a normalizing furnace compatible with oriented silicon steel and non-oriented silicon steel and a normalizing treatment method. An existing normalizing furnace is transformed on the basis of the normalizing production process of oriented and non-oriented silicon steel, a plurality of heating / cooling sections are additionally arranged between a radiant tube heating section and an outlet sealing chamber, a plurality of water spraying cooling sections are additionally arranged behind an aerial fog cooling section, and the functions of corresponding furnace sections can be freely adjusted in combination with reasonable configuration of the temperature of each tube section, so that the production efficiency of the oriented and non-oriented silicon steel is improved. The heating, cooling and soaking processes are conveniently exchanged, so that the normalizing furnace is compatible with non-oriented silicon steel normalizing treatment while being suitable for oriented silicon steel normalizing treatment, the productivity utilization rate of the normalizing furnace can be effectively improved, and the production economy is greatly improved; the temperature of each pipe section of the normalizing furnace is reasonably configured, so that the silicon steel normalizing treatment efficiency can be effectively improved, the quality of a silicon steel normalizing substrate is improved, the equipment investment, the energy consumption and the production cost are effectively reduced, and the method is easy to popularize.

Description

Technical Field

[0001] The present invention relates to the technical field of normalizing furnaces for silicon steel, and particularly relates to a normalizing furnace and a normalizing method compatible with grain-oriented and non-grain-oriented silicon steel. Background Art

[0002] Silicon steel sheets are a kind of soft magnetic material, which is the alloy material with the largest consumption in magnetic materials. They are mainly used in the electromechanical industry to manufacture transformers, motor cores and other magnetic components. They are important materials indispensable for industries such as power engineering, motor manufacturing, household appliances, radio technology, and telecommunications instruments. According to the arrangement directionality of grains in the product, they are usually divided into grain-oriented silicon steel and grain non-oriented silicon steel; high magnetic induction grain-oriented silicon steel and high-grade / high-efficiency non-oriented silicon steel must undergo normalizing treatment during the production process to achieve the required grain texture.

[0003] At present, the output of silicon steel normalizing furnaces is usually large, and the output of one normalizing unit can meet the production capacity requirements of multiple grain-oriented and non-grain-oriented silicon steel lines. However, due to the large gap in the normalizing processes of grain-oriented and non-grain-oriented silicon steel, for some steel enterprises that produce both grain-oriented and non-grain-oriented silicon steel simultaneously, the investment in building two types of normalizing units for grain-oriented and non-grain-oriented silicon steel is large. Moreover, due to the large production capacity, there is a problem of overproduction of the normalizing unit and poor economy. For the above reasons, there is an urgent need for a normalizing furnace that can not only meet the normalizing treatment of grain-oriented silicon steel but also be compatible with non-grain-oriented silicon steel. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to provide a normalizing furnace and a normalizing method compatible with grain-oriented and non-grain-oriented silicon steel, which can realize the normalizing treatment of grain-oriented silicon steel while being compatible with the normalizing treatment of non-grain-oriented silicon steel, effectively improve the production capacity utilization rate of the normalizing furnace, and greatly improve production economy.

[0005] To solve the above technical problem, the technical solution adopted by the present invention is:

[0006] I. A normalizing furnace compatible with grain-oriented and non-grain-oriented silicon steel

[0007] The present invention provides a normalizing furnace compatible with grain-oriented and non-grain-oriented silicon steel, which mainly includes: an inlet seal chamber 1, a preheating non-oxidation section 2, a radiant tube heating section 3, a first temperature control tube group, an outlet seal chamber 7, an air wiper 8, an air mist cooling section 9, and a second temperature control tube group arranged in sequence along the running direction of the strip steel;

[0008] The first temperature control tube group includes a soaking section 5. A 1# heating / cooling section 4 and a 2# heating / cooling section 6 are respectively connected to the front end and the rear end of the soaking section 5, and temperature regulating devices covering the entire section are provided in both the 1# heating / cooling section 4 and the 2# heating / cooling section 6;

[0009] The second temperature control tube group includes a water jacket cooling section 11. The front end and the rear end of the water jacket cooling section 11 are respectively connected with a No. 1 water spray cooling section 10 and a No. 2 water spray cooling section 12. Both the No. 1 water spray cooling section 10 and the No. 2 water spray cooling section 12 are provided with multiple groups of water spray nozzles, and the cooling rate of the strip in the section is adjusted in real time by opening different numbers of water spray nozzles.

[0010] Preferably, heat radiation tubes with adjustable power are arranged in the radiation tube heating section 3. When producing grain-oriented silicon steel, the temperature in the radiation tube heating section 3 is higher than a preset percentage one of the temperature in the preheating non-oxidizing section 2; when producing non-grain-oriented silicon steel, the temperature in the radiation tube heating section 3 is equal to the temperature in the preheating non-oxidizing section 2.

[0011] Preferably, an electric heating element a is arranged at the bottom of the soaking section 5, and a cooling pipe b is arranged on the side wall. The temperature in the section is adjusted by controlling the start and stop of the electric heating element a and the cooling pipe b.

[0012] Preferably, when producing grain-oriented silicon steel, the front end temperature of the No. 1 heating / cooling section 4 is equal to the temperature in the radiation tube heating section 3, the rear end temperature of the No. 1 heating / cooling section 4 is lower than a preset percentage two of the temperature in the radiation tube heating section 3, and the temperature in the No. 1 heating / cooling section 4 decreases uniformly along the direction from its front end to the rear end; when producing non-grain-oriented silicon steel, the temperature in the No. 1 heating / cooling section 4 is equal to the temperature in the radiation tube heating section 3.

[0013] Preferably, when producing grain-oriented silicon steel, the temperature in the soaking section 5 and the No. 2 heating / cooling section 6 is equal to the rear end temperature of the No. 1 heating / cooling section 4; when producing non-grain-oriented silicon steel, the temperature in the soaking section 5 is equal to the temperature in the radiation tube heating section 3, the front end temperature of the No. 2 heating / cooling section 6 is equal to the temperature in the soaking section 5, the rear end temperature of the No. 2 heating / cooling section 6 is lower than a preset percentage three of the temperature in the soaking section 5, and the temperature in the No. 2 heating / cooling section 6 decreases uniformly along the direction from its front end to the rear end.

[0014] Preferably, the aerosol cooling section 9, the No. 1 water spray cooling section 10, the water jacket cooling section 11 and the No. 2 water spray cooling section 12 all adopt a double-layer furnace shell structure, and a cooling water circulation device is arranged in the double-layer furnace shell interlayer.

[0015] Preferably, a plurality of aerosol distribution pipes c are evenly installed on the inner wall of the aerosol cooling section 9, and multiple groups of water spray nozzles d are evenly installed on the inner walls of the No. 1 water spray cooling section 10 and the No. 2 water spray cooling section 12.

[0016] Preferably, when producing grain-oriented electrical steel, all the aerosol pipes c in the aerosol cooling section 9 and all the water spray pipes in the 1# water spray cooling section 10 are opened to cool the strip at the maximum rate; and the cooling water circulation device of the water jacket cooling section 11 and the water spray pipes of the 2# water spray cooling section 12 are closed; when producing non-oriented electrical steel, the aerosol cooling section 9 and the 1# water spray cooling section 10 serve as the first slow cooling sections, and one of the aerosol pipes c in the aerosol cooling section 9 and the water spray pipes d in the 1# water spray cooling section 10 is opened every preset number; and the cooling water circulation device of the water jacket cooling section 11 is opened as the second slow cooling section; at the same time, all the water spray pipes of the 2# water spray cooling section 12 are opened to cool the strip at the maximum rate.

[0017] II. A normalizing treatment method compatible with grain-oriented and non-oriented electrical steel

[0018] Based on the same inventive concept, the present invention also provides a normalizing treatment method for grain-oriented and non-oriented electrical steel using the normalizing furnace as described above, which specifically includes the following steps:

[0019] S1. When producing grain-oriented electrical steel:

[0020] S11. The strip enters the preheating non-oxidizing section from the inlet sealing chamber and is heated to the temperature value T11, and is continuously heated to the temperature value T12 in the radiant tube heating section;

[0021] S12. The strip enters the 1# heating / cooling section and is uniformly cooled to the temperature value T13, and the temperature value T13 is kept unchanged in the soaking section and the 2# heating / cooling section for normalizing treatment;

[0022] S13. The strip passes through the air wiper from the outlet sealing chamber and enters the aerosol cooling section, and all the aerosol pipes in the aerosol cooling section are opened to cool the strip to the temperature value T14 at the maximum rate;

[0023] S14. The strip enters the 1# water spray cooling section, and all the water spray pipes of the 1# water spray cooling section are opened to continue cooling the strip to the temperature value T15, and at the same time, the cooling water circulation device of the water jacket cooling section and all the water spray pipes of the 2# water spray cooling section are closed;

[0024] Among them, the temperature value T12 > the temperature value T11 > the temperature value T13 > the temperature value T14 > the temperature value T15;

[0025] S2. When producing non-oriented electrical steel:

[0026] S21. The strip enters the preheating non-oxidizing section from the inlet sealing chamber and is heated to the temperature value T21, and the temperature value T21 is kept unchanged in the radiant tube heating section, the 1# heating / cooling section and the soaking section for normalizing treatment;

[0027] S22. The strip steel enters the 2# heating / cooling section and is uniformly cooled to the temperature value T22.

[0028] S23. The strip steel enters the aerosol cooling section after passing through the air wiper from the outlet seal chamber. Only part of the aerosol piping in the aerosol cooling section and part of the water spray nozzles in the 1# water spray cooling section are opened, and the strip steel is uniformly cooled to the temperature value T23 at a preset rate I.

[0029] S24. The strip steel enters the water jacket cooling section and is uniformly cooled to the temperature value T24 at a preset rate II, and then all the water spray nozzles in the 2# water spray cooling section are opened to cool the strip steel to the temperature value T25 at the maximum rate.

[0030] Wherein, the temperature value T21 > the temperature value T22 > the temperature value T23 > the temperature value T24 > the temperature value T25.

[0031] The present invention has the following main advantages compared with the prior art:

[0032] 1. A normalizing furnace compatible with grain-oriented and non-grain-oriented silicon steel provided by the present invention reforms the existing normalizing furnace based on the normalizing production processes of grain-oriented and non-grain-oriented silicon steel. By adding multiple heating / cooling sections between the radiant tube heating section and the outlet seal chamber, and adding multiple water spray cooling sections after the aerosol cooling section, combined with the rational configuration of the temperatures of each pipe section, the functions of the corresponding furnace sections can be freely adjusted, realizing the convenient conversion of heating, cooling, and soaking processes. Thus, it can be applicable to the normalizing treatment of grain-oriented silicon steel while being compatible with the normalizing treatment of non-grain-oriented silicon steel, effectively improving the production capacity utilization rate of the normalizing furnace and greatly enhancing the production economy.

[0033] 2. A normalizing treatment method compatible with grain-oriented and non-grain-oriented silicon steel provided by the present invention can effectively improve the efficiency of the normalizing treatment of silicon steel and the quality of the silicon steel normalizing substrate by reasonably configuring the temperatures of each pipe section of the normalizing furnace, effectively reducing equipment investment, energy consumption, and production costs, and being easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the normalizing furnace compatible with grain-oriented and non-grain-oriented silicon steel in the embodiment of the present invention;

[0035] Figure 2 It is a schematic diagram of the normalizing treatment process of grain-oriented and non-grain-oriented silicon steel in the embodiment of the present invention;

[0036] Figure 3 It is a flowchart of the normalizing treatment method compatible with grain-oriented and non-grain-oriented silicon steel in the embodiment of the present invention.

[0037] In the figure: 1 - Inlet sealing chamber; 2 - Preheating non-oxidizing section; 3 - Radiant tube heating section; 4 - 1# Heating / cooling section; 5 - Soaking section; 6 - 2# Heating / cooling section; 7 - Outlet sealing chamber; 8 - Air wiper; 9 - Mist cooling section; 10 - 1# Water spray cooling section; 11 - Water jacket cooling section; 12 - 2# Water spray cooling section; a - Electric heating element; b - Cooling pipe; c - Mist piping; d - Water spray nozzle. Detailed implementation manner

[0038] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] It should be noted that according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, or two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the objectives of the present invention.

[0040] Embodiment 1. This embodiment provides a normalizing furnace compatible with grain-oriented and non-grain-oriented silicon steel, as Figure 1 shown, mainly including: an inlet sealing chamber 1, a preheating non-oxidizing section 2, a radiant tube heating section 3, a first temperature control tube group, an outlet sealing chamber 7, an air wiper 8, a mist cooling section 9 and a second temperature control tube group arranged in sequence along the running direction of the strip;

[0041] Among them, the first temperature control tube group includes a soaking section 5. The front end and the rear end of the soaking section 5 are respectively connected to a 1# heating / cooling section 4 and a 2# heating / cooling section 6, and temperature adjustment devices covering the entire section are provided in both the 1# heating / cooling section 4 and the 2# heating / cooling section 6;

[0042] The second temperature control tube group includes a water jacket cooling section 11. The front end and the rear end of the water jacket cooling section 11 are respectively connected to a 1# water spray cooling section 10 and a 2# water spray cooling section 12, and multiple groups of water spray nozzles are provided in both the 1# water spray cooling section 10 and the 2# water spray cooling section 12, and the cooling rate of the strip in the section is adjusted in real time by opening different numbers of water spray nozzles.

[0043] Furthermore, heat radiation tubes with adjustable power are provided in the radiant tube heating section 3. When producing grain-oriented silicon steel, the temperature inside the radiant tube heating section 3 is higher than a preset percentage one of the temperature inside the preheating non-oxidizing section 2; when producing non-grain-oriented silicon steel, the temperature inside the radiant tube heating section 3 is equal to the temperature inside the preheating non-oxidizing section 2.

[0044] Further, an electric heating element a is provided at the bottom of the soaking section 5, and a cooling pipe b is provided on the side wall. The start and stop of the electric heating element a and the cooling pipe b are controlled to adjust the temperature within the section.

[0045] Further, when producing grain-oriented silicon steel, the front-end temperature of the 1# heating / cooling section 4 is equal to the temperature within the radiant tube heating section 3, the rear-end temperature of the 1# heating / cooling section 4 is lower than the temperature within the radiant tube heating section 3 by a preset percentage two, and the temperature within the 1# heating / cooling section 4 decreases uniformly along the direction from its front end to the rear end; when producing non-oriented silicon steel, the temperature within the 1# heating / cooling section 4 is equal to the temperature within the radiant tube heating section 3.

[0046] Further, when producing grain-oriented silicon steel, the temperature within the soaking section 5 and the 2# heating / cooling section 6 is equal to the rear-end temperature of the 1# heating / cooling section 4; when producing non-oriented silicon steel, the temperature within the soaking section 5 is equal to the temperature within the radiant tube heating section 3, the front-end temperature of the 2# heating / cooling section 6 is equal to the temperature within the soaking section 5, the rear-end temperature of the 2# heating / cooling section 6 is lower than the temperature within the soaking section 5 by a preset percentage three, and the temperature within the 2# heating / cooling section 6 decreases uniformly along the direction from its front end to the rear end.

[0047] Further, the aerosol cooling section 9, the 1# water spray cooling section 10, the water jacket cooling section 11, and the 2# water spray cooling section 12 all have a double-layer furnace shell structure, and a cooling water circulation device is provided in the interlayer of the double-layer furnace shell.

[0048] Further, a plurality of aerosol distribution pipes c are evenly installed on the inner wall of the aerosol cooling section 9, and multiple groups of water spray nozzles d are evenly installed on the inner walls of the 1# water spray cooling section 10 and the 2# water spray cooling section 12.

[0049] Further, when producing grain-oriented silicon steel, all the aerosol distribution pipes c in the aerosol cooling section 9 and the water spray nozzles in the 1# water spray cooling section 10 are opened to cool the strip at the maximum rate; and the cooling water circulation device of the water jacket cooling section 11 and the water spray nozzles of the 2# water spray cooling section 12 are closed; when producing non-oriented silicon steel, the aerosol cooling section 9 and the 1# water spray cooling section 10 serve as the first slow cooling section, and one of the aerosol distribution pipes c in the aerosol cooling section 9 and the water spray nozzles d in the 1# water spray cooling section 10 is opened every preset number; and the cooling water circulation device of the water jacket cooling section 11 is opened as the second slow cooling section; at the same time, all the water spray nozzles of the 2# water spray cooling section 12 are opened to cool the strip at the maximum rate.

[0050] Example 2. In this example, by analyzing the production processes of the normalizing furnaces for grain-oriented electrical steel and non-grain-oriented electrical steel, and through the redesign of the existing furnace sections, a normalizing furnace compatible with both grain-oriented and non-grain-oriented electrical steel is provided to meet the two production processes simultaneously.

[0051] Specifically: The normalizing furnace for grain-oriented electrical steel usually heats the strip to 1050 - 1150 °C, then cools it at a certain cooling rate to 900 °C and then performs soaking (100 - 120 s), and is rapidly cooled to below 80 °C after leaving the furnace; The normalizing furnace for non-grain-oriented electrical steel usually heats the strip to 1000 °C, then soaks (100 - 120 s), cools to about 800 °C in the furnace and then leaves the furnace, and then slowly cools to 600 °C and then is rapidly cooled to 80 °C.

[0052] Based on the above process requirements of the normalizing furnace, the main furnace sections of this example include: Furnace Section 1 - Inlet Sealing Chamber, Furnace Section 2 - Preheating and Non-oxidizing Section, Furnace Section 3 - Radiant Tube Heating Section, Furnace Section 4 - 1# Heating / Cooling Section, Furnace Section 5 - Soaking Section, Furnace Section 6 - 2# Heating / Cooling Section, Furnace Section 7 - Outlet Sealing Chamber, Furnace Section 8 - Air Wiper, Furnace Section 9 - Mist Cooling Section, Furnace Section 10 - 1# Water Spray Cooling Section, Furnace Section 11 - Water Jacket Cooling Section, Furnace Section 12 - 2# Water Spray Cooling Section.

[0053] Through the rational configuration of Furnace Section 3, Furnace Section 4, and Furnace Section 6, the furnace section functions can be freely adjusted to realize the process conversion of heating, cooling, and soaking, so as to realize that the normalizing furnace for grain-oriented electrical steel can also be used as the normalizing furnace for non-grain-oriented electrical steel at the same time, to solve the problem of overcapacity and poor economy of a single normalizing furnace, and effectively reduce the investment, energy consumption, and production cost.

[0054] Among them, when producing grain-oriented electrical steel, Furnace Section 3 plays a heating role through radiant tube heating, and when producing non-grain-oriented electrical steel, it realizes the soaking function by adjusting the radiant tube power;

[0055] The bottom of Furnace Section 5 is provided with an electric heating element a, and the side wall is provided with a cooling pipe b; Furnace Section 4 and Furnace Section 6 are configured the same as Furnace Section 5, and the temperature inside the section is adjusted by controlling the power of the electric heating element a at the bottom of the furnace and the cooling capacity of the cooling pipe b;

[0056] Furnace Section 4 can play a role in uniform cooling when producing grain-oriented electrical steel and a soaking role when producing non-grain-oriented electrical steel; Furnace Section 6 plays a soaking role when producing grain-oriented electrical steel and a uniform cooling role when producing non-grain-oriented electrical steel;

[0057] The furnace body structures of Furnace Section 9, Furnace Section 10, Furnace Section 11, and Furnace Section 12 are similar, being double-layer furnace shells with water flowing in the interlayer of the furnace shells. The difference is that mist distribution pipes c are arranged above and below the strip on the side walls of Furnace Section 9, and water spray nozzles d are arranged above and below the strip on the side walls of Furnace Section 10 and Furnace Section 12.

[0058] Further, as Figure 2 shown, when producing grain-oriented electrical steel, the sidewall spray pipes of furnace sections nine / ten are opened to rapidly cool the strip to the target temperature, and then the strip passes through the unused furnace sections eleven / twelve; when producing non-oriented electrical steel, the sidewall spray pipes of furnace sections nine / ten are not put into use, and furnace sections nine / ten / eleven slowly cool the strip to the target temperature, and then the strip passes through furnace section twelve for rapid cooling to the target temperature.

[0059] Embodiment 3, based on the same inventive concept, this embodiment also provides a normalizing treatment method for compatible grain-oriented and non-oriented electrical steel using the above-mentioned normalizing furnace, as Figure 3 shown, which specifically includes the following steps:

[0060] S1, when producing grain-oriented electrical steel:

[0061] S11, the strip enters the preheating non-oxidizing section from the inlet seal chamber and is heated to 1100°C, and is continuously heated to 1120°C in the radiant tube heating section;

[0062] S12, the strip enters the 1# heating / cooling section and is uniformly cooled to 1000°C, and remains at 1000°C in the soaking section and the 2# heating / cooling section for normalizing treatment;

[0063] S13, the strip passes through the air wiper from the outlet seal chamber and enters the aerosol cooling section, and all the aerosol distribution pipes in the aerosol cooling section are opened to cool the strip to 450°C at the maximum rate;

[0064] S14, the strip enters the 1# water spray cooling section, and all the water spray pipes in the 1# water spray cooling section are opened to continue cooling the strip to below 80°C, and at the same time, the cooling water circulation device of the water jacket cooling section and all the water spray pipes of the 2# water spray cooling section are closed.

[0065] S2, when producing non-oriented electrical steel:

[0066] S21, the strip enters the preheating non-oxidizing section from the inlet seal chamber and is heated to 1000°C, and remains at 1000°C in the radiant tube heating section, the 1# heating / cooling section and the soaking section for normalizing treatment;

[0067] S22, the strip enters the 2# heating / cooling section and is uniformly cooled to 800°C;

[0068] S23, the strip passes through the air wiper from the outlet seal chamber and enters the aerosol cooling section, and only some of the aerosol distribution pipes in the aerosol cooling section and some of the water spray pipes in the 1# water spray cooling section are opened to uniformly cool the strip to below 700°C at a preset rate one;

[0069] In S24, the strip enters the water jacket cooling section and is uniformly cooled to below 600°C at a preset rate two, and then all the water spray nozzles in the 2# water spray cooling section are turned on to cool the strip to below 80°C at the maximum rate.

[0070] Furthermore, the parts not detailed in this application are the same as or implemented by the prior art.

[0071] In summary:

[0072] 1. A normalizing furnace compatible with grain-oriented and non-grain-oriented silicon steel provided by the present invention transforms the existing normalizing furnace based on the normalizing production processes of grain-oriented and non-grain-oriented silicon steel. By adding multiple heating / cooling sections between the radiant tube heating section and the outlet sealing chamber, and adding multiple water spray cooling sections after the aerosol cooling section, combined with the rational configuration of the temperatures of each pipe section, the functions of the corresponding furnace sections can be freely adjusted, realizing the convenient switching of heating, cooling, and soaking processes. Thus, it can be applicable to the normalizing treatment of grain-oriented silicon steel while being compatible with the normalizing treatment of non-grain-oriented silicon steel, effectively improving the production capacity utilization rate of the normalizing furnace and greatly enhancing the production economy.

[0073] 2. A normalizing treatment method compatible with grain-oriented and non-grain-oriented silicon steel provided by the present invention can effectively improve the efficiency of the normalizing treatment of silicon steel and the quality of the silicon steel normalizing substrate by reasonably configuring the temperatures of each pipe section of the normalizing furnace, effectively reducing equipment investment, energy consumption, and production costs, and being easy to promote.

[0074] Those skilled in the art can easily understand that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A normalizing furnace compatible with grain-oriented and non-grain-oriented silicon steel, characterized in that: It includes an inlet sealing chamber (1), a preheating non-oxidizing section (2), a radiant tube heating section (3), a first temperature control tube group, an outlet sealing chamber (7), an air wiper (8), an air mist cooling section (9) and a second temperature control tube group arranged in sequence along the running direction of the strip steel; The first temperature control tube group includes a soaking section (5), and the front end and the rear end of the soaking section (5) are respectively connected with a 1# heating / cooling section (4) and a 2# heating / cooling section (6), and temperature regulating devices covering the whole section are arranged in both the 1# heating / cooling section (4) and the 2# heating / cooling section (6); The second temperature control tube group includes a water jacket cooling section (11), and the front end and the rear end of the water jacket cooling section (11) are respectively connected with a 1# water spray cooling section (10) and a 2# water spray cooling section (12), and multiple groups of water spray nozzles are arranged in both the 1# water spray cooling section (10) and the 2# water spray cooling section (12), and the cooling rate of the strip steel in the section is adjusted in real time by opening different numbers of water spray nozzles.

2. The normalizing furnace for compatible grain-oriented and non-grain-oriented silicon steel according to claim 1, characterized in that, Thermal radiation tubes with adjustable power are arranged in the radiant tube heating section (3). When producing grain-oriented silicon steel, the in-section temperature of the radiant tube heating section (3) is higher than a preset percentage one of the in-section temperature of the preheating non-oxidizing section (2); when producing non-grain-oriented silicon steel, the in-section temperature of the radiant tube heating section (3) is equal to the in-section temperature of the preheating non-oxidizing section (2).

3. A normalizing furnace compatible with oriented and non-oriented silicon steel according to claim 1, characterized in that, An electric heating element (a) is arranged at the bottom of the soaking section (5), and cooling tubes (b) are arranged on the side walls, and the in-section temperature is adjusted by controlling the start and stop of the electric heating element (a) and the cooling tubes (b).

4. A normalizing furnace compatible with grain-oriented and non-grain-oriented silicon steel according to claim 3, characterized in that When producing grain-oriented silicon steel, the front-end temperature of the 1# heating / cooling section (4) is equal to the in-section temperature of the radiant tube heating section (3), the rear-end temperature of the 1# heating / cooling section (4) is lower than a preset percentage two of the in-section temperature of the radiant tube heating section (3), and the in-section temperature of the 1# heating / cooling section (4) decreases uniformly along the direction from its front end to the rear end; When producing non-grain-oriented silicon steel, the in-section temperature of the 1# heating / cooling section (4) is equal to the in-section temperature of the radiant tube heating section (3).

5. A normalizing furnace compatible with grain-oriented and non-grain-oriented silicon steel according to claim 4, characterized in that, When producing grain-oriented silicon steel, the in-section temperatures of the soaking section (5) and the 2# heating / cooling section (6) are equal to the rear-end temperature of the 1# heating / cooling section (4); When producing non-grain-oriented silicon steel, the in-section temperature of the soaking section (5) is equal to the in-section temperature of the radiant tube heating section (3), the front-end temperature of the 2# heating / cooling section (6) is equal to the in-section temperature of the soaking section (5), the rear-end temperature of the 2# heating / cooling section (6) is lower than a preset percentage three of the in-section temperature of the soaking section (5), and the in-section temperature of the 2# heating / cooling section (6) decreases uniformly along the direction from its front end to the rear end.

6. The normalizing furnace for compatible grain-oriented and non-grain-oriented silicon steel according to claim 1, characterized in that, The air mist cooling section (9), the 1# water spray cooling section (10), the water jacket cooling section (11) and the 2# water spray cooling section (12) all adopt a double-layer furnace shell structure, and a cooling water circulation device is arranged in the double-layer furnace shell interlayer.

7. The normalizing furnace for compatible grain-oriented and non-grain-oriented silicon steel according to claim 6, characterized in that, A plurality of aerosol pipes (c) are evenly installed on the inner wall of the aerosol cooling section (9), and multiple groups of water spray pipes (d) are evenly installed on the inner walls of the 1# water spray cooling section (10) and the 2# water spray cooling section (12).

8. A normalizing furnace compatible with grain-oriented and non-grain-oriented silicon steel according to claim 7, characterized in that, When producing grain-oriented electrical steel, all the aerosol pipes (c) in the aerosol cooling section (9) and the water spray pipes in the 1# water spray cooling section (10) are fully opened to cool the strip at the maximum rate; and the cooling water circulation device of the water jacket cooling section (11) and the water spray pipes of the 2# water spray cooling section (12) are closed.

9. A normalizing furnace compatible with grain-oriented and non-grain-oriented silicon steel according to claim 8, characterized in that, When producing non-oriented electrical steel, the aerosol cooling section (9) and the 1# water spray cooling section (10) serve as the first slow cooling section, and one of the aerosol pipes (c) in the aerosol cooling section (9) and the water spray pipes (d) in the 1# water spray cooling section (10) is opened every preset number; and the cooling water circulation device of the water jacket cooling section (11) is opened as the second slow cooling section; at the same time, all the water spray pipes of the 2# water spray cooling section (12) are opened to cool the strip at the maximum rate.

10. A normalizing treatment method for compatible grain-oriented and non-grain-oriented silicon steel using a normalizing furnace as described in any one of claims 1 to 9, characterized in that, It includes the following steps: S1. When producing grain-oriented electrical steel: S11. The strip enters the preheating non-oxidizing section from the inlet sealing chamber and is heated to the temperature value T11, and is continuously heated to the temperature value T12 in the radiant tube heating section; S12. The strip enters the 1# heating / cooling section and is evenly cooled to the temperature value T13, and the temperature value T13 is kept unchanged in the soaking section and the 2# heating / cooling section for normalization treatment; S13. The strip passes through the air wiper from the outlet sealing chamber and enters the aerosol cooling section, and all the aerosol pipes in the aerosol cooling section are opened to cool the strip to the temperature value T14 at the maximum rate; S14. The strip enters the 1# water spray cooling section, and all the water spray pipes of the 1# water spray cooling section are opened to continue cooling the strip to the temperature value T15, and at the same time, the cooling water circulation device of the water jacket cooling section and all the water spray pipes of the 2# water spray cooling section are closed; Wherein, the temperature value T12 > the temperature value T11 > the temperature value T13 > the temperature value T14 > the temperature value T15; S2. When producing non-oriented electrical steel: S21. The strip enters the preheating non-oxidizing section from the inlet sealing chamber and is heated to the temperature value T21, and the temperature value T21 is kept unchanged in the radiant tube heating section, the 1# heating / cooling section and the soaking section for normalization treatment; S22. The strip enters the 2# heating / cooling section and is evenly cooled to the temperature value T22; S23. The strip passes through the air wiper from the outlet sealing chamber and enters the aerosol cooling section, and only some of the aerosol pipes in the aerosol cooling section and some of the water spray pipes in the 1# water spray cooling section are opened to evenly cool the strip to the temperature value T23 at a preset rate one; S24. The strip enters the water jacket cooling section and is evenly cooled to the temperature value T24 at a preset rate two, and then all the water spray pipes of the 2# water spray cooling section are opened to cool the strip to the temperature value T25 at the maximum rate; Wherein, the temperature value T21 > the temperature value T22 > the temperature value T23 > the temperature value T24 > the temperature value T25.

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