Mounting structure for improving emulsion spots of cold-rolled strip steel roll core

Abstract

The utility model discloses a mounting structure for improving emulsion spots of a cold-rolled strip steel coil core, an air knife is mounted at a ray protection cover positioned on the outlet side of a working roll of a cold-rolling mill, and an included angle between the airflow outlet direction of the air knife and a strip steel plane positioned on the outlet side of the working roll of the cold-rolling mill is 58-62 degrees; the device can obviously solve the problem of emulsion spots of the strip steel roll core, and is simple in structural design, convenient to operate and suitable for popularization and application in large-scale production.

Description

Technical Field

[0001] This utility model relates to the field of steel plate manufacturing, and specifically to an installation structure for improving the emulsion stains on cold-rolled strip steel cores. Background Technology

[0002] With the development of industries such as automobiles, home appliances, and construction, customers have increasingly higher requirements for the surface quality of cold-rolled products. Controlling emulsion spot defects on the surface of cold-rolled strip steel has become a crucial aspect of cold-rolling production. Emulsion spots are caused by excessive emulsion residue on the strip surface. Based on the characteristics of cold-rolled steel, the main methods for controlling this defect are to rationally control various indicators of the emulsion and improve the cleanliness of the strip surface. Emulsion spots mostly appear at the head of the rolling mill, specifically the core of the steel coil.

[0003] Specifically, cold rolling production requires emulsion to lubricate and cool the sheet and rolls, and air knife purging is performed at the sheet exit. However, there is a problem of emulsion spots on the cold-rolled strip core.

[0004] Therefore, the applicant hopes to find a technical solution to improve the above-mentioned technical problems. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an installation structure that improves the emulsion spot of cold-rolled strip core, which can significantly improve the problem of emulsion spot of strip core. Moreover, the structure of this utility model is simple and easy to operate, and is suitable for promotion and application in large-scale production.

[0006] The applicant analyzed the problem of emulsion residue on cold-rolled strip cores and believed that the main reasons for the emulsion residue on the strip were: first, the emulsion splashed everywhere after hitting the working roll surface of the rolling mill, causing dripping and contaminating the strip; second, the air knife had insufficient cleaning ability on some areas of the strip surface and missed some areas.

[0007] Therefore, the technical solution adopted by this utility model is as follows:

[0008] An installation structure for improving the emulsion stains on cold-rolled strip cores includes an air knife installed at a radiation shield located on the exit side of the cold rolling mill work roll, wherein the angle between the airflow outlet direction of the air knife and the strip plane located on the exit side of the cold rolling mill work roll is 58-62°.

[0009] Preferably, the airflow direction of the air knife on the strip plane is opposite to the conveying direction of the strip.

[0010] Preferably, the angle between the airflow outlet direction of the air knife and the strip plane located on the outlet side of the cold rolling mill work roll is 60°.

[0011] Preferably, an anti-winding guide plate is installed on the exit side of the cold rolling mill work roll to prevent damage to the cold rolling mill work roll when wrapping the strip core with the roll, prevent emulsion residue on the surface of the strip core, and facilitate the smooth threading of the strip.

[0012] Preferably, the anti-tangling guide plate is provided with water baffles on both the left and right sides, wherein the surface of the water baffles is covered with wool felt to prevent the emulsion from splashing everywhere and dripping.

[0013] Preferably, a bakelite board is fixedly installed at the front end of the anti-tangling guide plate near the cold rolling mill work roll, and a protective gap is reserved between the bakelite board and the cold rolling mill work roll to prevent the emulsion from splashing everywhere and dripping.

[0014] Preferably, the protective gap ranges from 2 to 3 mm.

[0015] Preferably, the lower end of the radiation protection cover is equipped with an anti-drip guide plate, and the anti-drip guide plate is installed between the cold rolling mill work roll and the air knife.

[0016] Preferably, the cold rolling mill is a six-roll reversible cold rolling mill.

[0017] Furthermore, the applicant discovered that during the changeover of the reversible rolling mill pass, the inlet of the previous pass becomes the outlet of the next pass. A large amount of emulsion remaining at the gap between the work rolls in the previous pass cannot flow away in time and flows out along the strip and is rolled into the core during the next rolling pass. The residence time is particularly long in the last pass, forming emulsion spots. Preferably, a manually operated compressed air blowpipe is installed on the outlet side of the work roll of the cold rolling mill for manual purging at the start of the last pass of the cold rolling mill.

[0018] This invention adjusts the airflow purging installation angle of the air knife and incorporates a splash-proof structure design for the relevant structure of the rolling mill. After implementation, it has been proven to significantly improve the problem of emulsion spots on strip cores. Furthermore, the structure of this invention is simple and easy to operate, making it suitable for widespread application in mass production. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the installation structure for improving emulsion spots on cold-rolled strip steel cores according to a specific embodiment of this utility model;

[0020] Figure 2 This is a simplified schematic diagram of the installation distribution structure between the air knife 50 and the strip steel plane in a specific embodiment of this utility model. Detailed Implementation

[0021] This utility model embodiment discloses an installation structure for improving the emulsion spot of cold-rolled strip core. An air knife is installed at the X-ray protection cover located on the exit side of the cold rolling mill work roll, wherein the angle between the airflow outlet direction of the air knife and the strip plane located on the exit side of the cold rolling mill work roll is 58-62°.

[0022] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0023] Please see Figure 1 and combined Figure 2 As shown, an installation structure for improving emulsion spots on cold-rolled strip cores is provided. Preferably, in this embodiment, the cold rolling mill is a six-roll reversible cold rolling mill. An air knife 50 is installed at the X-ray shield 40 located on the exit side of the work roll 20 of the cold rolling mill, wherein the angle between the airflow outlet direction of the air knife 50 and the plane of the strip 10 located on the exit side of the work roll 20 of the cold rolling mill is 58-62°. More preferably, in this embodiment, the angle between the airflow outlet direction of the air knife 50 and the plane of the strip 10 located on the exit side of the work roll 20 of the cold rolling mill is 60°. More preferably, in this embodiment, the purging pressure of the air knife 50 is set at 0.3-0.4 MPa.

[0024] Preferably, in order to further ensure the purging effect of the air knife 50 on the steel plate, in this embodiment, the airflow direction of the air knife 50 on the plane of the strip 10 is opposite to the conveying direction of the strip 10.

[0025] Preferably, in order to avoid the emulsion splashing everywhere, in this embodiment, an anti-winding guide plate 30 is installed on the exit side of the cold rolling mill work roll 20 to prevent damage to the cold rolling mill work roll 20 when wrapping the strip core, prevent the emulsion from remaining on the surface of the strip core, and facilitate the smooth threading of the strip 10.

[0026] More preferably, in this embodiment, water baffles 31 are provided on the left and right sides of the anti-tangling guide plate 30, wherein wool felt is installed on the surface of the water baffles 31 to prevent the emulsion from splashing everywhere and dripping; more preferably, in this embodiment, a bakelite board 32 is fixedly installed at the front end of the anti-tangling guide plate 30 near the cold rolling mill work roll 20, and a protective gap is reserved between the bakelite board 32 and the cold rolling mill work roll 20 to prevent the emulsion from splashing everywhere and dripping; specifically preferably, in this embodiment, the protective gap ranges from 2 to 3 mm.

[0027] Preferably, in order to prevent the emulsion from splashing everywhere, in this embodiment, the lower end of the radiation shield 40 is equipped with an anti-drip guide plate 41, and the anti-drip guide plate 41 is installed between the cold rolling mill work roll 20 and the air knife 50.

[0028] Preferably, in this embodiment, a manually operated compressed air blowpipe is installed on the outlet side of the cold rolling mill work roll 20 for manual blowing at the start of the last pass of the cold rolling mill. The time of manual blowing and the closing time of the emulsion can be determined according to the actual situation. More preferably, in this embodiment, the emulsion is closed before the last pass of the cold rolling mill.

[0029] This embodiment adjusts and sets the airflow purging installation angle of the air knife and designs an anti-splash structure for the relevant structure of the rolling mill. After implementation, it has been proven that it can significantly improve the problem of emulsion spots on strip cores. Moreover, the structural design of this embodiment is simple and easy to operate, making it suitable for promotion and application in large-scale production.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An installation structure for improving emulsion spots on cold-rolled strip steel cores, characterized in that, An air knife (50) is installed at the X-ray shield (40) located on the exit side of the cold rolling mill work roll (20), wherein the angle between the airflow outlet direction of the air knife (50) and the plane of the strip (10) located on the exit side of the cold rolling mill work roll (20) is 58-62°.

2. The installation structure for improving the emulsion spot of cold-rolled strip steel core according to claim 1, characterized in that, The airflow direction of the air knife (50) on the plane of the strip (10) is opposite to the conveying direction of the strip (10).

3. The installation structure for improving the emulsion spot of cold-rolled strip steel core according to claim 1, characterized in that, The angle between the air outlet direction of the air knife (50) and the plane of the strip (10) located on the outlet side of the cold rolling mill work roll (20) is 60°.

4. The installation structure for improving the emulsion spot of cold-rolled strip steel core according to claim 1, characterized in that, The cold rolling mill work roll (20) is equipped with an anti-winding guide plate (30) on the exit side to avoid damaging the cold rolling mill work roll (20) when the strip core is wound onto the roll, to prevent the emulsion from remaining on the surface of the strip core, and to facilitate the smooth threading of the strip (10).

5. The installation structure for improving the emulsion spot of cold-rolled strip steel core according to claim 4, characterized in that, The anti-tangling guide plate (30) is provided with water baffles (31) on both the left and right sides. The surface of the water baffles (31) is covered with wool felt to prevent the emulsion from splashing everywhere and dripping.

6. The mounting structure for improving the emulsion spot of cold-rolled strip steel core according to claim 4 or 5, characterized in that, A bakelite board (32) is fixedly installed at the front end of the anti-tangling guide plate (30) near the cold rolling mill work roll (20), and a protective gap is reserved between the bakelite board (32) and the cold rolling mill work roll (20) to prevent the emulsion from splashing everywhere and dripping.

7. The installation structure for improving the emulsion spot of cold-rolled strip steel core according to claim 6, characterized in that, The protective gap ranges from 2 to 3 mm.

8. The installation structure for improving the emulsion spot of cold-rolled strip steel core according to claim 1, characterized in that, The lower end of the radiation shield (40) is equipped with an anti-drip guide plate (41), and the anti-drip guide plate (41) is installed between the cold rolling mill work roll (20) and the air knife (50).

9. The installation structure for improving the emulsion spot of cold-rolled strip steel core according to claim 1, characterized in that, The cold rolling mill is a six-roll reversible cold rolling mill.

10. The installation structure for improving the emulsion spot of cold-rolled strip steel core according to claim 1, characterized in that, A manually operated compressed air blowpipe is installed on the exit side of the cold rolling mill work roll (20) for manual purging at the start of the last pass of the cold rolling mill.

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