Production device of steel belt composite coating

Abstract

The utility model relates to the technical field of metallurgical manufacturing equipment, in particular to a production device for a steel belt composite coating. The production device of the steel belt composite coating specifically comprises a coating machine, a heating furnace, an ascending fan, a high tower guide roller and a descending fan, the heating furnace is positioned at the rear end of the coating machine; the high tower guide roller is positioned between the ascending fan and the descending fan; the coater comprises a passivation coater and a fingerprint-resistant coater, a production line where the steel strip passes through the passivation coater is a passivation section, and a production line where the passivated steel strip passes through the fingerprint-resistant coater is a fingerprint-resistant section; the fingerprint-resistant section is located at the front end of the passivation section, and a deviation rectifying roller is arranged at the joint of the passivation section and the fingerprint-resistant section. The utility model has the advantage of preventing the plate surface of the steel belt from blackening.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical manufacturing equipment, in particular to a production device for composite coating of steel strips. Background Art

[0002] Steel is a metal material with large output and wide application. It has many excellent properties, such as good toughness and high strength. It plays a vital role in the national economic construction. However, steel materials are prone to corrosion during use. Long-term exposure to humid, acidic and other environments will further accelerate corrosion. Therefore, the corrosion prevention of steel is very important. This problem can be effectively solved by forming a coating on steel components.

[0003] The existing method is to plate zinc-aluminum-magnesium on steel components. Zinc-aluminum-magnesium plating is a new type of high corrosion-resistant coating. The coating composition is mainly composed of aluminum, magnesium, titanium, zinc and other trace elements. Due to the addition of magnesium, titanium and other trace elements, the metallographic structure of the coating contains more MgZn2 structure, MgZn2-Zn binary structure and MgZn2-Zn-Al ternary structure, which effectively refines the grain structure; compared with traditional galvanized and aluminum-zinc steel strips, it has stronger corrosion resistance. At the same time, the broken coating after mechanical processing (stretching, stamping, bending, etc.) can automatically generate a new protective layer, so it has better processing performance.

[0004] At present, the zinc-aluminum-magnesium products produced on the zinc-aluminum-magnesium production line will turn black on the surface after being placed outdoors for a week. A layer of passivation film cannot prevent the magnesium molecules in the coating from oxidizing with the air, and long-term placement will easily cause the steel strip surface to turn black.

[0005] Therefore, in view of the shortcomings of the prior art, a production device for composite coating of steel strip is provided. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a production device for a steel strip composite coating, aiming to solve the problem of blackening of the steel strip surface.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A production device for composite coating of steel strip, comprising: a coating machine, a heating furnace, an upward fan, a high tower guide roller and a downward fan;

[0009] The heating furnace is located at the rear end of the coating machine, and the high tower guide roller is located between the upward fan and the downward fan;

[0010] The coating machine includes a passivation coating machine and an anti-fingerprint coating machine. The production line of the steel strip passing through the passivation coating machine is the passivation section, and the production line of the passivated steel strip passing through the anti-fingerprint coating machine is the anti-fingerprint section.

[0011] The anti-fingerprint section is located at the front end of the passivation section, and a correction roller is provided at the connection between the passivation section and the anti-fingerprint section.

[0012] As a further improvement of the technical solution of the utility model, the passivation section includes a passivation coater, a first heating furnace, a first upward fan, a first high tower guide roller and a first downward fan. The first heating furnace is located at the rear end of the passivation coater, and the first high tower guide roller is located between the first upward fan and the first downward fan.

[0013] As a further improvement of the technical solution of the utility model, the first upward fan includes a first cooling fan and a second cooling fan, the second cooling fan is located at the front end of the first cooling fan, and the cooling power of the first cooling fan is greater than the cooling power of the second cooling fan.

[0014] As a further improvement of the technical solution of the utility model, the anti-fingerprint section includes a fingerprint-resistant coating machine, a second heating furnace, a second upward fan, a second high tower guide roller and a second downward fan. The second heating furnace is located at the rear end of the fingerprint-resistant coating machine, and the second high tower guide roller is located between the second upward fan and the second downward fan.

[0015] As a further improvement of the technical solution of the utility model, the second upward fan includes a third cooling fan and a fourth cooling fan, the third cooling fan is located at the front end of the fourth cooling fan, and the cooling power of the third cooling fan is greater than the cooling power of the fourth cooling fan.

[0016] As a further improvement of the technical solution of the utility model, the deflection correction roller includes a first deflection correction roller and a second deflection correction roller, the axes of the first deflection correction roller and the second deflection correction roller are located in the same horizontal plane, the first deflection correction roller is located below the first downstream fan, and the second deflection correction roller is located below the anti-fingerprint coating machine.

[0017] As a further improvement of the technical solution of the utility model, it also includes a tension roller, and the tension roller is located between the fingerprint-resistant section and the looper.

[0018] As a further improvement of the technical solution of the utility model, the heating furnace is an infrared heating furnace, and the temperature of the infrared heating furnace is 90°C-120°C.

[0019] As a further improvement of the technical solution of the utility model, the temperature of the steel strip entering the high tower guide roller is less than 80°C.

[0020] As a further improvement of the technical solution of the utility model, the temperature of the steel belt exiting the downwind fan is less than 50°C.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] In the production device of the composite coating of steel strip of the utility model, the steel strip is firstly subjected to roller coating treatment through a coating machine, a heating furnace, an upward fan, a high tower guide roller and a downward fan, and then the steel strip is successively subjected to a heating furnace to improve the thickness and density of the passivation surface film of the steel strip, and then cooled through the upward fan, the high tower guide roller and the downward fan to form a zinc-aluminum-magnesium steel strip with a passivation film or a fingerprint-resistant film; a fingerprint-resistant section is arranged at the rear end of the passivation section, and the steel strip subjected to the passivation coating process is further subjected to a fingerprint-resistant coating process to form a passivation and fingerprint-resistant composite coating to prevent the steel strip surface from blackening. The production device of the composite coating of steel strip has the characteristic of preventing the steel strip surface from blackening. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The technology of the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0024] Figure 1 It is a structural schematic diagram of a production device for composite coating of steel strips of the utility model.

[0025] In the figure:

[0026] 1. Passivation section; 11. Passivation coating machine; 12. First heating furnace; 13. First cooling fan; 14. Second cooling fan; 15. First high tower guide roller; 16. First downflow fan;

[0027] 2. Anti-fingerprint section; 21. Anti-fingerprint coating machine; 22. Second heating furnace; 23. Third cooling fan; 24. Fourth cooling fan; 25. Second high tower guide roller; 26. Second downflow fan;

[0028] 3. Deviation correction roller; 4. Tension roller; 5. Steel belt. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, scheme and effect of the utility model. It should be noted that the embodiments and features in the embodiments in this application can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0030] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the drawings.

[0031] Reference Figure 1 , a production device for composite coating of steel strip 5, comprising a coating machine, a heating furnace, an upward fan, a high tower guide roller and a downward fan;

[0032] In one embodiment, the heating furnace is located at the rear end of the coating machine, and the high tower guide roller is located between the upward fan and the downward fan; the coating machine includes a passivation coating machine 11 and an anti-fingerprint coating machine 21, the production line of the steel strip 5 passing through the passivation coating machine 11 is the passivation section 1, and the production line of the passivated steel strip 5 passing through the anti-fingerprint coating machine 21 is the anti-fingerprint section 2; the anti-fingerprint section 2 is located at the front end of the passivation section 1, and a correction roller 3 is provided at the connection between the passivation section 1 and the anti-fingerprint section 2. Preferably, the pressing force between the adhesive roller and the coating roller of the passivation coating machine 11 and the anti-fingerprint coating machine 12 is about 300kg, and the thickness of the anti-fingerprint film is 1.2g / ㎡-1.5g / ㎡. The passivation coating machine 11 and the anti-fingerprint coating machine 12 also include a material tray arranged on both sides of the steel strip 5, the adhesive roller is partially immersed in the material tray, the coating roller is not immersed in the material tray, the adhesive roller is in abutment with the coating roller, and the other end of the coating roller feeds the steel strip 5.

[0033] Among them, the steel strip 5 is firstly roller-coated through the coating machine, heating furnace, upward fan, high tower guide roller and downward fan, and the thickness and density of the passivation surface film of the steel strip 5 are improved in turn through the heating furnace, and then cooled through the upward fan, high tower guide roller and downward fan to form a zinc-aluminum-magnesium steel strip 5 with a passivation film or a fingerprint-resistant film; the fingerprint-resistant section 2 is set at the rear end of the passivation section 1, and the steel strip 5 after the passivation coating process is further added with the fingerprint-resistant coating process to form a passivation and fingerprint-resistant composite coating to prevent the blackening of the steel strip 5 board surface. The production device of the composite coating of the steel strip 5 has the characteristic of preventing the blackening of the steel strip 5 board surface.

[0034] In one embodiment, the passivation section 1 includes a passivation coating machine 11, a first heating furnace 12, a first upward fan, a first high tower guide roller 15 and a first downward fan 16. The first heating furnace 12 is located at the rear end of the passivation coating machine 11, and the first high tower guide roller 15 is located between the first upward fan and the first downward fan 16. The first upward fan includes a first cooling fan 13 and a second cooling fan 14. The second cooling fan 14 is located at the front end of the first cooling fan 13. The cooling power of the first cooling fan 13 is greater than the cooling power of the second cooling fan 14. The two different ranges of cooling are conducive to controlling the temperature of the steel strip 5.

[0035] In one embodiment, the anti-fingerprint section 2 includes an anti-fingerprint coating machine 21, a second heating furnace 22, a second upward fan, a second high tower guide roller 25, and a second downward fan 26. The second heating furnace 22 is located at the rear end of the anti-fingerprint coating machine 21, and the second high tower guide roller 25 is located between the second upward fan and the second downward fan 26. The second upward fan includes a third cooling fan 23 and a fourth cooling fan 24. The third cooling fan 23 is located at the front end of the fourth cooling fan 24. The cooling power of the third cooling fan 23 is greater than the cooling power of the fourth cooling fan 24. The two different ranges of cooling are conducive to controlling the temperature of the steel strip 5.

[0036] In one embodiment, the correcting roller 3 includes a first correcting roller 3 and a second correcting roller 3 , the axes of the first correcting roller 3 and the second correcting roller 3 are located in the same horizontal plane, the first correcting roller 3 is located below the first downstream fan 16 , and the second correcting roller 3 is located below the anti-fingerprint coating machine 21 .

[0037] In one embodiment, the first high tower guide roller 15 and the second high tower guide roller 25 both include a first guide roller and a second guide roller, the axes of the first guide roller and the second guide roller are located in the same horizontal plane, the first guide roller is located above the second cooling fan 14 or the fourth cooling fan 24, and the second guide roller is located above the first downstream fan 16 or the second downstream fan 26.

[0038] In one embodiment, the production device further comprises a tension roller 4, and the tension roller 4 is located between the fingerprint-resistant section 2 and the looper.

[0039] In one embodiment, the temperature of the steel strip 5 entering the high tower guide roller is less than 80°C, and the temperature of the steel strip 5 exiting the downwind fan is less than 50°C. Preferably, the temperature of the steel strip 5 entering the high tower guide roller is controlled by using two first cooling fans 13 and second cooling fans 14, third cooling fans 23 and fourth cooling fans 24 of different powers. At the same time, the temperature of the steel strip 5 entering the next stage is controlled by setting the downwind fan to prevent the temperature from being too high.

[0040] Similarly, the heating furnace is an infrared heating furnace, and the temperature of the infrared heating furnace is 90°C-120°C.

[0041] For other contents of the production device for composite coating of steel strip described in the utility model, please refer to the prior art and will not be described in detail here.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A production device for composite coating of steel strip, characterized in that: include: Coating machine, heating furnace, upward fan, high tower guide roller and downward fan; The heating furnace is located at the rear end of the coating machine, and the high tower guide roller is located between the upward fan and the downward fan; The coating machine includes a passivation coating machine and an anti-fingerprint coating machine. The production line of the steel strip passing through the passivation coating machine is the passivation section, and the production line of the passivated steel strip passing through the anti-fingerprint coating machine is the anti-fingerprint section. The anti-fingerprint section is located at the front end of the passivation section, and a correction roller is provided at the connection between the passivation section and the anti-fingerprint section.

2. The production device of composite coating on steel strip according to claim 1, characterized in that: The passivation section includes a passivation coater, a first heating furnace, a first upward fan, a first high tower guide roller and a first downward fan. The first heating furnace is located at the rear end of the passivation coater, and the first high tower guide roller is located between the first upward fan and the first downward fan.

3. The production device of composite coating on steel strip according to claim 2, characterized in that: The first upward fan includes a first cooling fan and a second cooling fan, the second cooling fan is located at the front end of the first cooling fan, and the cooling power of the first cooling fan is greater than the cooling power of the second cooling fan.

4. The production device of composite coating on steel strip according to claim 1, characterized in that: The anti-fingerprint section includes an anti-fingerprint coating machine, a second heating furnace, a second upward fan, a second high tower guide roller and a second downward fan. The second heating furnace is located at the rear end of the anti-fingerprint coating machine, and the second high tower guide roller is located between the second upward fan and the second downward fan.

5. The production device of composite coating on steel strip according to claim 4, characterized in that: The second upward fan includes a third cooling fan and a fourth cooling fan, the third cooling fan is located at the front end of the fourth cooling fan, and the cooling power of the third cooling fan is greater than the cooling power of the fourth cooling fan.

6. The production device of composite coating on steel strip according to claim 2, characterized in that: The deflection correction roller includes a first deflection correction roller and a second deflection correction roller. The axes of the first deflection correction roller and the second deflection correction roller are located in the same horizontal plane. The first deflection correction roller is located below the first downstream fan, and the second deflection correction roller is located below the anti-fingerprint coating machine.

7. The production device of composite coating on steel strip according to claim 3, characterized in that: It also includes a tension roller, which is located between the fingerprint-resistant section and the looper.

8. The production device of composite coating on steel strip according to claim 1, characterized in that: The heating furnace is an infrared heating furnace, and the temperature of the infrared heating furnace is 90°C-120°C.

9. The production device of composite coating on steel strip according to claim 1, characterized in that: The temperature of the steel strip entering the high tower guide roller is less than 80°C.

10. The production device of composite coating on steel strip according to claim 1, characterized in that: The temperature of the steel belt exiting the downwind fan is less than 50°C.

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