Double-set rolling oil device for reciprocating cold-rolling mill

Abstract

The utility model discloses a double-set rolling oil device for a reciprocating cold-rolling mill, the reciprocating cold-rolling mill is provided with an initial rolling oil device, the reciprocating cold-rolling mill is also provided with an auxiliary rolling oil device, and the reciprocating cold-rolling mill is switched by a reversing valve to operate by adopting the initial rolling oil device or the auxiliary rolling oil device; wherein when non-household appliance plates are produced, the reciprocating cold-rolling mill operates by adopting an initial rolling oil device; when a household appliance plate is produced, the reciprocating cold-rolling mill is operated by adopting an auxiliary rolling oil device; according to the utility model, the mixing of a rolling oil system during the production of non-household appliance plates (such as building material plates) and a rolling oil system during the production of household appliance plates is avoided, and the surface quality of household appliance plate production is improved; the application is implemented and applied by the applicant, about 40% of quality repair time caused by abnormal quality of soft spots during production of household appliance plates is reduced, the overall working efficiency of a rolling mill is improved, and the rolling oil is suitable for being used as an effective tool for cleanly producing household appliance base plates in a reciprocating cold rolling unit.

Description

Technical Field

[0001] The utility model belongs to the field of rolling oil systems of reciprocating cold rolling mill production lines, and in particular relates to a double-set rolling oil device for a reciprocating cold rolling mill. Background Art

[0002] During the cold rolling process of strip steel, rolling oil plays a very important role as a medium for rolling lubrication and cooling. Whether the cleanliness of the rolling oil can meet the needs of home appliance plates has a great impact on the quality of the plate surface after rolling.

[0003] Specifically, during cold rolling production, impurities in the rolling oil will precipitate from the actual impurity production site and adhere to the surface of the strip. After cold rolling production, the impurities will be printed on the surface of the strip. Impurities in the rolling oil are divided into ferromagnetic substances and non-ferromagnetic substances. Among them, ferromagnetic substances are mainly iron powder and other substances in the rolling oil, which are separated by magnetic separators when passing through the dirty oil tank. However, a single magnetic separator cannot effectively eliminate the iron powder contained in the rolling oil; non-ferromagnetic substances are mainly dust contained in the air and concrete around the rolling mill system. Such inclusions are usually filtered through filtering equipment such as vacuum filters or backwash filters.

[0004] Due to the presence of a large amount of iron filings impurities in the rolling oil, the subsequent production of home appliance plates caused great trouble. In actual production, the production rolls were replaced frequently. When the production of home appliance plates was just beginning, it even reached the point of 2 rolls / group of rolls, which seriously affected the production efficiency of the rolling mill.

[0005] Therefore, the applicant urgently needs to find a technical solution to solve the problem of slow production efficiency of the rolling mill and over-frequent replacement of rolls due to insufficient cleanliness of the rolling oil system. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a double-set rolling oil device for a reciprocating cold rolling mill, which avoids the confusion of the rolling oil system during the production of non-household appliance plates (such as building material plates) and the rolling oil system during the production of household appliance plates (with very high requirements on plate surface quality), thereby improving the surface quality of household appliance plates. The applicant adopted this application for implementation and application, reducing the quality rework time due to quality abnormalities of soft spots in the production of household appliance plates by about 40%, improving the overall working efficiency of the rolling mill, and is suitable as an effective tool for clean rolling oil production of household appliance substrates in reciprocating cold rolling mills.

[0007] The technical solution adopted by this new type of application is as follows:

[0008] A double rolling oil device for a reciprocating cold rolling mill, wherein the reciprocating cold rolling mill is provided with an initial rolling oil device, and the reciprocating cold rolling mill is also provided with an auxiliary rolling oil device, and the reciprocating cold rolling mill is operated by switching the initial rolling oil device or the auxiliary rolling oil device through a reversing valve; wherein, when non-home appliance plates are produced, the reciprocating cold rolling mill is operated by the initial rolling oil device; when home appliance plates are produced, the reciprocating cold rolling mill is operated by the auxiliary rolling oil device.

[0009] Preferably, the auxiliary rolling oil device includes a clean oil tank, a dirty oil tank, a magnetic separator, a backflushing filter and a vacuum filter; wherein the magnetic separator is arranged in the dirty oil tank, the dirty oil tank is connected to the vacuum filter through the backflushing filter, and the vacuum filter returns the cleaned and purified oil to the clean oil tank through a pipeline.

[0010] Preferably, an overflow channel is provided between the clean oil tank and the dirty oil tank, and the clean oil tank can overflow oil into the dirty oil tank.

[0011] Preferably, the magnetic separator is a rare earth metal magnetic separator, wherein a plurality of magnetic rods are arranged in the magnetic separator, and the magnetic flux of each magnetic rod is not less than 14000Gs; the magnetic flux of the magnetic rods used in the magnetic separator of the initial rolling oil device is 800-3000Gs.

[0012] Preferably, the vacuum filter uses filter paper with a mesh size of not less than 30 and performs filtration in a non-vacuum adsorption manner to achieve a high-efficiency and precise filtration effect.

[0013] Preferably, the clean oil tank, dirty oil tank and all pipelines of the auxiliary rolling oil device are made of SUS316 stainless steel.

[0014] Preferably, the magnetic separator, backwash filter and vacuum filter perform cyclic filtration for 24 hours.

[0015] Preferably, a clean oil tank agitator and a dirty oil tank agitator are respectively provided in the clean oil tank and the dirty oil tank; wherein, a clean oil tank grille plate is provided at the bottom layer of the clean oil tank, and the clean oil tank grille plate is located below the clean oil tank agitator; and / or a dirty oil tank grille plate is provided at the bottom layer of the dirty oil tank, and the dirty oil tank grille plate is located below the dirty oil tank agitator.

[0016] Preferably, two clean oil tank agitators are provided in the clean oil tank, and two dirty oil tank agitators are provided in the dirty oil tank.

[0017] Preferably, the reversing valve is an electronic reversing valve automatically controlled by a controller, and one-key switching is achieved through the controller.

[0018] The present application further arranges an auxiliary rolling oil device on the basis of a reciprocating cold rolling mill structure provided with an initial rolling oil device, provides a rolling oil system with a higher degree of cleanliness for the rolling oil system of the reciprocating cold rolling mill, and reduces the abnormal soft spots on the surface of the steel coils produced by the rolling mill by providing cleaner rolling oil for the rolling mill production through the auxiliary rolling oil device. When non-home appliance plates are produced, the reciprocating cold rolling mill adopts the initial rolling oil device for operation; when home appliance plates are produced, the reciprocating cold rolling mill adopts the auxiliary rolling oil device for operation. In actual implementation and application, the auxiliary rolling oil device is always in uninterrupted circulation filtration, so as to achieve excellent clean production in the production of home appliance plates. At the same time, the present application further arranges an auxiliary rolling oil device on the basis of a reciprocating cold rolling mill structure provided with an initial rolling oil device, and provides an auxiliary rolling oil device for the production of home appliance plates. The auxiliary rolling oil device provided by the model has a simple structure, low cost and is very easy to operate. It is suitable as an automated tool for automatic cleaning of the rolling oil system. The clean production of household appliance plates is achieved through the auxiliary rolling oil device, avoiding confusion between the rolling oil system during the production of non-household appliance plates (such as building material plates) and the rolling oil system during the production of household appliance plates (with very high requirements for plate surface quality), thereby improving the surface quality of household appliance plates. The applicant adopted the present application for implementation and reduced the quality rework time due to abnormal quality of soft spots in the production of household appliance plates by about 40%, thereby improving the overall working efficiency of the rolling mill, and is suitable as an effective tool for the clean production of rolling oil for household appliance substrates in reciprocating cold rolling mills. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the connection structure of the auxiliary rolling oil device under the specific implementation mode of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a clean oil tank and a dirty oil tank in an auxiliary rolling oil device under a specific implementation mode of the utility model. DETAILED DESCRIPTION

[0021] The utility model embodiment discloses a double rolling oil device for a reciprocating cold rolling mill, wherein the reciprocating cold rolling mill is provided with an initial rolling oil device, and the reciprocating cold rolling mill is also provided with an auxiliary rolling oil device, and the reciprocating cold rolling mill is switched to operate with the initial rolling oil device or the auxiliary rolling oil device through a reversing valve; wherein, when non-home appliance plates are produced, the reciprocating cold rolling mill is operated with the initial rolling oil device; and when home appliance plates are produced, the reciprocating cold rolling mill is operated with the auxiliary rolling oil device.

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the following will be combined with the drawings in the implementation cases of the present utility model to clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present utility model.

[0023] Please refer to Figure 1 and Figure 2 As shown, a double set of rolling oil devices for a reciprocating cold rolling mill, the reciprocating cold rolling mill is provided with an initial rolling oil device, the reciprocating cold rolling mill is also provided with an auxiliary rolling oil device, the reciprocating cold rolling mill switches to operate with the initial rolling oil device or the auxiliary rolling oil device through a reversing valve; wherein, when non-home appliance plates are produced, the reciprocating cold rolling mill operates with the initial rolling oil device; when home appliance plates are produced, the reciprocating cold rolling mill operates with the auxiliary rolling oil device; preferably, in this embodiment, the reversing valve adopts an electronic reversing valve automatically controlled by a controller, and one-key switching is achieved through the controller.

[0024] Preferably, in the present embodiment, the auxiliary rolling oil device includes a clean oil tank 1, a dirty oil tank 2, a magnetic separator 3, a backflushing filter 4 and a vacuum filter 5; wherein the magnetic separator 1 is arranged in the dirty oil tank 2, the dirty oil tank 2 is connected to the vacuum filter 5 through the backflushing filter 4, and the vacuum filter 5 returns the cleaned and purified oil to the clean oil tank 1 through a pipeline; preferably, in the present embodiment, an overflow channel 6 is provided between the clean oil tank 1 and the dirty oil tank 2, and the clean oil tank 1 can overflow the oil into the dirty oil tank 2.

[0025] Preferably, in order to achieve excellent cleaning effect, in the present embodiment, the magnetic separator 3 adopts a rare earth metal magnetic separator, wherein a plurality of magnetic rods are arranged in the magnetic separator 3, each magnetic rod has a magnetic flux of not less than 14000Gs (in the present embodiment, a magnetic rod with a magnetic flux of 15000Gs is specifically selected). The improvement of magnetic flux greatly improves the ability of the magnetic separator 3 to remove iron chips. It has been verified through actual implementation that when the auxiliary rolling oil device is used for operation, the iron content of the rolling oil is reduced from about 350ppm in the early stage to 120ppm, which greatly reduces the total iron content and also greatly reduces the adhesion of iron powder inside the rolling mill, reduces the source of abnormal soft spots, and thus improves the quality of the steel plate surface; the magnetic rod magnetic flux used by the magnetic separator of the initial rolling oil device is 800-3000Gs (specifically a magnetic rod with a magnetic flux of 1000Gs); preferably, in the present embodiment, the vacuum filter adopts filter paper of not less than 30 meshes, and adopts a vacuum adsorption-free method for filtering to achieve efficient and precise filtering effect.

[0026] Preferably, in this embodiment, the clean oil tank 1, the dirty oil tank 2 and all pipelines of the auxiliary rolling oil device are made of SUS316 stainless steel; wherein, the clean oil tank 1 and the dirty oil tank 2 are made of SUS316 stainless steel with a thickness of 3.0 mm, and all pipelines of the auxiliary rolling oil device are formed by bending and welding to ensure that there is no leakage on the side wall and that impurities such as rust caused by abnormalities in the pipelines will not affect the quality of the rolling oil.

[0027] Preferably, in this embodiment, the magnetic separator 3, the backwash filter 4 and the vacuum filter 5 perform circulating filtration for 24 hours, thereby ensuring the cleanliness of the rolling oil and removing the iron powder and other inclusions in the rolling oil as much as possible.

[0028] Preferably, in the present embodiment, a clean oil tank agitator 11 and a dirty oil tank agitator 21 are respectively provided in the clean oil tank 1 and the dirty oil tank 2; wherein, a clean oil tank grille plate 12 is provided at the bottom layer of the clean oil tank 1, and the clean oil tank grille plate 12 is located below the clean oil tank agitator 11; a dirty oil tank grille plate 22 is provided at the bottom layer of the dirty oil tank 2, and the dirty oil tank grille plate 22 is located below the dirty oil tank agitator 21; the rolling oil located at the upper layer is kept in a stirring state, while the bottom layer is kept in a relatively static state, so as to sink the impurities settled in the middle of the rolling oil to below the clean oil tank grille plate 12 or the dirty oil tank grille plate 22; specifically, during implementation, the rolling oil located at the bottom layer can be discharged once a week, and the discharge time is about 5 minutes, and impurities such as iron filings are removed by discharging the rolling oil at the bottom layer.

[0029] Preferably, in this embodiment, two clean oil tank agitators 11 are provided in the clean oil tank 1, and two dirty oil tank agitators 21 are provided in the dirty oil tank 2. Through continuous stirring, the concentration uniformity of the rolling oil in the clean oil tank 1 and the dirty oil tank 2 is ensured to avoid concentration differences between the upper and lower layers.

[0030] In combination with this embodiment, its working process in the actual production process is further explained: before producing household appliance plates, the reciprocating cold rolling mill automatically switches to the operation of the auxiliary rolling oil device through a one-button switch, and the rolling oil in the clean oil tank 1 is pumped into the reciprocating cold rolling mill through a pipeline. The produced rolling oil enters the dirty oil tank 2 through a pipeline after being produced by the reciprocating cold rolling mill. The adsorption filtration of the magnetic separator 3 is carried out in the dirty oil tank 2. The filtration of the magnetic separator 3 realizes the first filtration of the rolling oil in the dirty oil tank 2, thereby realizing the ferromagnetic Effective filtration of substances, the iron content in the rolling oil can be effectively controlled by filtering through the magnetic separator 3; further, in the process of flowing from the dirty oil tank 2 to the clean oil tank 1, the rolling oil in the dirty oil tank 2 is first filtered through the backwash filter 4 for the first stage, and after the first stage of filtration, the rolling oil is pumped into the vacuum filter 5, and then pumped into the clean oil tank 1 through the pump of the vacuum filter 5 (not shown in the figure), and finally pumped into the reciprocating cold rolling mill through the pump of the clean oil tank 1 (not shown in the figure) for cold rolling operation production, thereby realizing the circulation filtration operation effect.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A double set rolling oil device for a reciprocating cold rolling mill, wherein the reciprocating cold rolling mill is provided with an initial rolling oil device, characterized in that: The reciprocating cold rolling mill is also provided with an auxiliary rolling oil device, and the reciprocating cold rolling mill is operated by switching the initial rolling oil device or the auxiliary rolling oil device through a reversing valve; wherein, when non-household appliance plates are produced, the reciprocating cold rolling mill is operated by the initial rolling oil device; when household appliance plates are produced, the reciprocating cold rolling mill is operated by the auxiliary rolling oil device.

2. The double-set rolling oil device for a reciprocating cold rolling mill according to claim 1, characterized in that: The auxiliary rolling oil device includes a clean oil tank, a dirty oil tank, a magnetic separator, a backflushing filter and a vacuum filter; wherein the magnetic separator is arranged in the dirty oil tank, the dirty oil tank is connected to the vacuum filter through the backflushing filter, and the vacuum filter returns the cleaned and purified oil to the clean oil tank through a pipeline.

3. The double-set rolling oil device for a reciprocating cold rolling mill according to claim 2, characterized in that: An overflow channel is provided between the clean oil tank and the dirty oil tank, and the clean oil tank can overflow oil into the dirty oil tank.

4. The double-set rolling oil device for a reciprocating cold rolling mill according to claim 2, characterized in that: The magnetic separator is a rare earth metal magnetic separator, wherein a plurality of magnetic bars are arranged in the magnetic separator, and the magnetic flux of each magnetic bar is not less than 14000Gs; the magnetic flux of the magnetic bars used in the magnetic separator of the initial rolling oil device is 800-3000Gs.

5. The double-set rolling oil device for a reciprocating cold rolling mill according to claim 2, characterized in that: The vacuum filter uses filter paper with a mesh size of not less than 30 and performs filtration in a non-vacuum adsorption manner to achieve a high-efficiency and precise filtration effect.

6. The double-set rolling oil device for a reciprocating cold rolling mill according to claim 2, characterized in that: The clean oil tank, dirty oil tank and all pipelines of the auxiliary rolling oil device are made of SUS316 stainless steel.

7. The double-set rolling oil device for a reciprocating cold rolling mill according to claim 2, characterized in that: The magnetic separator, backwash filter and vacuum filter perform cyclic filtration for 24 hours.

8. The double-set rolling oil device for a reciprocating cold rolling mill according to claim 2, characterized in that: A clean oil tank agitator and a dirty oil tank agitator are respectively arranged in the clean oil tank and the dirty oil tank; wherein, a clean oil tank grille plate is arranged at the bottom layer of the clean oil tank, and the clean oil tank grille plate is located below the clean oil tank agitator; and / or a dirty oil tank grille plate is arranged at the bottom layer of the dirty oil tank, and the dirty oil tank grille plate is located below the dirty oil tank agitator.

9. The double-set rolling oil device for a reciprocating cold rolling mill according to claim 8, characterized in that: Two clean oil tank agitators are arranged in the clean oil tank, and two dirty oil tank agitators are arranged in the dirty oil tank.

10. The double-set rolling oil device for a reciprocating cold rolling mill according to claim 1, characterized in that: The reversing valve is an electronic reversing valve automatically controlled by a controller, and one-key switching is achieved through the controller.

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