High-strength cold-rolled sheet and process for producing the same

Abstract

The application relates to the technical field of cold-rolled plates, in particular to a high-strength cold-rolled plate which comprises a cold-rolled plate and further comprises a protection mechanism fixed on the cold-rolled plate, wherein the protection mechanism comprises an oil-permeable film, a sponge pad, rust-preventive oil and an oil separation film; the oil-permeable film is fixed on the cold-rolled plate; the rust-preventive oil is arranged on the sponge pad; the sponge pad is fixed on the oil-permeable film; the oil-permeable film is arranged between the sponge pad and the cold-rolled plate; the oil separation film is fixed on the sponge pad; and the sponge pad is arranged between the oil-permeable film and the oil separation film. The application further provides a production process of the high-strength cold-rolled plate. In use, the rust-preventive oil is used to form a protective film on the surface of the cold-rolled plate, so that rusting of the cold-rolled plate is prevented; the storage time of the cold-rolled plate is prolonged; and the strength of the cold-rolled plate is indirectly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cold-rolled sheet, in particular to a high-strength cold-rolled sheet and a production process thereof. BACKGROUND

[0002] The cold-rolled sheet is a product which is rolled at room temperature below the recrystallization temperature using a hot-rolled coil as raw material. It is mainly used in automobile manufacturing, electrical products, etc. Cold rolling is rolling at the recrystallization temperature, but it is generally understood as rolling of materials using normal temperature. In the production of cold-rolled sheet, since the funnel-shaped crystallizer is used for the thin slab, the flow and heat transfer inside the crystallizer are more complex than in the traditional slab continuous casting, and the liquid surface fluctuation is more complicated. During the casting process, it often causes slag entrapment, and part of the slag entrapment remains on the surface of the cast slab to form surface inclusions. In short, the large inclusions on the edge of the processed cold-rolled sheet are prone to induce edge cracks, and there is no protective mechanism on the cold-rolled sheet. If there is a crack on the edge of the cold-rolled sheet during storage, it will accelerate the rusting of the cold-rolled sheet and greatly reduce the strength of the cold-rolled sheet. Therefore, a high-strength cold-rolled sheet and a production process thereof are needed to meet the demand. SUMMARY

[0003] The purpose of the present application is to solve the problem of the lack of protective mechanism in the prior art cold-rolled sheet, and to provide a high-strength cold-rolled sheet and a production process thereof.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] A high-strength cold-rolled sheet is designed, which comprises a cold-rolled sheet and further comprises:

[0006] A protective mechanism is fixed on the cold-rolled sheet, which comprises an oil-permeable film, a sponge pad, anti-rust oil and an oil barrier film. The oil-permeable film is fixed on the cold-rolled sheet, the anti-rust oil is arranged on the sponge pad, the sponge pad is fixed on the oil-permeable film, the oil-permeable film is arranged between the sponge pad and the cold-rolled sheet, the oil barrier film is fixed on the sponge pad, and the sponge pad is arranged between the oil-permeable film and the oil barrier film.

[0007] Preferably, the oil-permeable film is made of polyethylene film, and the oil barrier film is made of eptfe film.

[0008] Preferably, the high-strength cold-rolled sheet further comprises a backflow mechanism, which is fixed inside the sponge pad.

[0009] Preferably, the backflow mechanism comprises a plurality of first oil guide pipes and a plurality of second oil guide pipes, and the plurality of first oil guide pipes and the plurality of second oil guide pipes are fixed inside the sponge pad in a staggered and equidistant manner.

[0010] Preferably, the capillary and the paper sleeve jointly constitute the first oil guide pipe and the second oil guide pipe, the paper sleeve is sleeved and fixed on the capillary, and the paper sleeve is fixed on the sponge pad.

[0011] Preferably, a plurality of holes are equidistantly and penetratingly arranged on the capillary and the paper sleeve.

[0012] The application further provides a production process of the high-strength cold-rolled plate.

[0013] S1, processing the cold-rolled plate by using a cold-rolling device;

[0014] S2, wrapping the oil-permeable film on the cold-rolled plate;

[0015] S3, soaking the sponge pad in the rust-proof oil, taking out the sponge pad, and fixing the sponge pad on the oil-permeable film;

[0016] S4, wrapping the oil barrier film on the surface of the sponge pad, and the high-strength cold-rolled plate is processed.

[0017] The high-strength cold-rolled plate and the production process thereof have the beneficial effects that the cold-rolled plate is wrapped by the oil-permeable film, the sponge pad and the oil barrier film from inside to outside, the rust-proof oil in the sponge pad is impregnated on the cold-rolled plate through the oil-permeable film, a protective film is formed on the surface of the cold-rolled plate by using the rust-proof oil, rusting of the cold-rolled plate is prevented, the storage time of the cold-rolled plate is increased, the strength of the cold-rolled plate is indirectly improved, the rust-proof oil in the sponge pad is prevented from leaking out by the oil barrier film, waste of the rust-proof oil in the sponge pad is avoided, and the environment around the cold-rolled plate is prevented from being polluted. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structure diagram of the high-strength cold-rolled plate is provided.

[0019] Figure 2 A structure diagram of the high-strength cold-rolled plate is provided. Figure 1 An enlarged view of A in the structure diagram of the high-strength cold-rolled plate.

[0020] Figure 3 A structure diagram of the first oil guide pipe or the second oil guide pipe of the high-strength cold-rolled plate is provided.

[0021] Figure 4 A top view of the high-strength cold-rolled plate is provided.

[0022] In the figure: cold-rolled sheet 1, oil-permeable film 2, sponge pad 3, oil barrier film 4, first oil guide pipe 5, capillary tube 6, paper sleeve 7, hole 8, second oil guide pipe 9. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0024] Embodiment 1

[0025] Reference Figure 1 and 4 A high-strength cold-rolled sheet, comprising a cold-rolled sheet 1, further comprising:

[0026] A protection mechanism is fixed on the cold-rolled sheet 1, and the protection mechanism comprises an oil-permeable film 2, a sponge pad 3, rust-proof oil, and an oil barrier film 4. The oil-permeable film 2 is fixed on the cold-rolled sheet 1 and is made of a polyethylene film. The rust-proof oil is arranged on the sponge pad 3, and the sponge pad 3 is fixed on the oil-permeable film 2. The oil-permeable film 2 is made of a polyethylene film, and there are gaps between the high molecular chains and chain segments in the polyethylene film. The distance of the gaps is larger than the width of oil molecules, so that the rust-proof oil in the sponge pad 3 can permeate through the oil-permeable film 2 and be soaked on the surface of the cold-rolled sheet 1. The oil-permeable film 2 is arranged between the sponge pad 3 and the cold-rolled sheet 1. The oil barrier film 4 is fixed on the sponge pad 3 and is made of an eptfe film. The sponge pad 3 is arranged between the oil-permeable film 2 and the oil barrier film 4. The oil barrier film 4 is made of an eptfe film, and there are gaps between the high molecular chains and chain segments in the eptfe film. The distance of the gaps is smaller than the width of oil molecules, so that the rust-proof oil in the sponge pad 3 cannot permeate through the oil barrier film 4, thereby avoiding waste of the rust-proof oil and pollution of the surrounding environment.

[0027] Working principle: when the high-strength cold-rolled sheet is used, the cold-rolled sheet 1 is wrapped layer by layer from the inside to the outside by the oil-permeable film 2, the sponge pad 3, and the oil barrier film 4. The rust-proof oil in the sponge pad 3 can permeate through the oil-permeable film 2 and be soaked on the cold-rolled sheet 1. The rust-proof oil is used to form a protective film on the surface of the cold-rolled sheet 1 to prevent rusting of the cold-rolled sheet 1. This can not only increase the storage time of the cold-rolled sheet 1, but also indirectly improve the strength of the cold-rolled sheet 1. In addition, the rust-proof oil in the sponge pad 3 cannot permeate through the oil barrier film 4, which can prevent the rust-proof oil in the sponge pad 3 from overflowing and causing waste of the rust-proof oil in the sponge pad 3 and pollution of the surrounding environment of the cold-rolled sheet 1.

[0028] Embodiment 2

[0029] On the basis of embodiment 1, when multiple cold-rolled plates 1 are stored together, in order to save space, multiple cold-rolled plates 1 are stacked together, and under the action of gravity, the rust-proof oil in the sponge pad 3 is easy to accumulate at the bottom, which will cause the rust-proof oil in the sponge pad 3 to be not easy to soak on the side surface of the edge part of the cold-rolled plate 1, refer to Figures 1-4 As another preferred embodiment of the present application, the difference from embodiment 1 is that it further includes a reflux mechanism fixed inside the sponge pad 3. The reflux mechanism can make the rust-proof oil inside the sponge pad 3 more evenly soaked on the side surface of the edge part of the cold-rolled plate 1. The reflux mechanism includes a plurality of first oil guide pipes 5 and a plurality of second oil guide pipes 9, which are staggered and equidistantly fixed inside the sponge pad 3. According to the principle of siphon, the plurality of first oil guide pipes 5 and the plurality of second oil guide pipes 9 can guide the rust-proof oil at the bottom of the sponge pad 3 to the top, and the first oil guide pipe 5 and the second oil guide pipe 9 will not be deformed under the extrusion of adjacent cold-rolled plates 1.

[0030] It also includes a capillary tube 6 and a paper sleeve 7, which together constitute the first oil guide pipe 5 and the second oil guide pipe 9, the paper sleeve 7 is sleeved and fixed on the capillary tube 6, which not only protects the capillary tube 6, but also improves the siphon effect of the capillary tube 6, and the paper sleeve 7 is fixed on the sponge pad 3. It also includes a plurality of holes 8, which are equidistantly and penetratingly provided on the capillary tube 6 and the paper sleeve 7. The plurality of holes 8 are provided on the capillary tube 6 and the paper sleeve 7, which can make the rust-proof oil introduced on the capillary tube 6 and the paper sleeve 7 more evenly distributed on the sponge pad 3, and then make the rust-proof oil in the sponge pad 3 evenly soaked on the side surface of the edge part of the cold-rolled plate 1.

[0031] Working principle: when multiple cold-rolled plates 1 are stacked together, in order to avoid the rust-proof oil in the sponge pad 3 all accumulating at the bottom of the sponge pad 3, according to the principle of siphon, the capillary tube 6 and the paper sleeve 7 can guide the rust-proof oil at the bottom of the sponge pad 3 to the top of the sponge pad 3, so that the rust-proof oil is more evenly distributed on the sponge pad 3, and then the rust-proof oil in the sponge pad 3 can be evenly soaked on the side surface of the edge part of the cold-rolled plate 1.

[0032] Embodiment 3

[0033] On the basis of embodiment 1 and embodiment 2, refer to Figures 1-4 As another preferred embodiment of the present application, the difference from embodiment 1 and embodiment 2 is that a production process of high-strength cold-rolled plate is further proposed, which includes the following steps:

[0034] S1, processing cold-rolled plate 1 with cold-rolling equipment;

[0035] S2, wrapping the oil-permeable film 2 on the cold-rolled plate 1;

[0036] Before the oil-permeable film 2 is wrapped on the cold-rolled plate, the surface of the cold-rolled plate is cleaned, dirt on the surface of the cold-rolled plate is cleaned away, and the surface of the cold-rolled plate is dried, and then the oil-permeable film 2 is wrapped on the cold-rolled plate, so that the oil-permeable film 2 is more fixed on the surface of the cold-rolled plate;

[0037] S3, the sponge pad 3 is soaked in the rust-proof oil, the sponge pad 3 is saturated with the rust-proof oil, then the sponge pad 3 is taken out and fixed on the oil-permeable film 2; the oil-permeable film 2 is made of polyethylene film, and there are gaps between high molecular chains and chain segments in the polyethylene film, the distance of the gaps is greater than the width of oil molecules, so that the rust-proof oil in the sponge pad 3 can permeate through the oil-permeable film 2, the cold-rolled plate 1 is protected by the rust-proof oil, rusting of the cold-rolled plate 1 is prevented, and the strength of the cold-rolled plate 1 is indirectly enhanced;

[0038] S4, the oil-proof film 4 is wrapped on the surface of the sponge pad 3, and the high-strength cold-rolled plate is processed. The oil-proof film 4 is made of eptfe film, and there are gaps between high molecular chains and chain segments in the eptfe film, the distance of the gaps is smaller than the width of oil molecules, so that the rust-proof oil in the sponge pad 3 cannot permeate through the oil-proof film 4, waste of the rust-proof oil is avoided, and the rust-proof oil cannot pollute the surrounding environment.

[0039] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A high-strength cold-rolled sheet comprising a cold-rolled sheet (1), characterized in that, Also include: The protection mechanism is fixed on the cold-rolled plate (1), the protection mechanism includes oil permeable film (2), sponge pad (3), rust-proof oil and oil separation film (4), the oil permeable film (2) is fixed on the cold-rolled plate (1), the rust-proof oil is arranged on the sponge pad (3), the sponge pad (3) is fixed on the oil permeable film (2), the oil permeable film (2) is arranged between the sponge pad (3) and the cold-rolled plate (1), the oil separation film (4) is fixed on the sponge pad (3), and the sponge pad (3) is arranged between the oil permeable film (2) and the oil separation film (4); Also include backflow mechanism, the backflow mechanism is fixed inside the sponge pad (3), the backflow mechanism includes a plurality of first oil pipes (5) and a plurality of second oil pipes (9), a plurality of the first oil pipes (5) and a plurality of the second oil pipes (9) are staggered and equidistantly fixed inside the sponge pad (3); Also include capillary tube (6) and paper sleeve (7), the capillary tube (6) and the paper sleeve (7) jointly constitute the first oil pipe (5) and the second oil pipe (9), the paper sleeve (7) is sleeved and fixed on the capillary tube (6), and the paper sleeve (7) is fixed on the sponge pad (3); Also include a plurality of holes (8), a plurality of the holes (8) are equidistantly and penetratingly arranged on the capillary tube (6) and the paper sleeve (7).

2. The high-strength cold-rolled sheet according to claim 1, characterized by The oil permeable film (2) is made of polyethylene film, and the oil separation film (4) is made of eptfe film.

3. A process for the production of a high-strength cold-rolled sheet according to any one of claims 1-2, characterized in that, The method comprises the following steps: S1, the cold-rolled plate (1) is processed by using cold-rolled equipment; S2, the oil permeable film (2) is wrapped on the cold-rolled plate (1); S3, the sponge pad (3) is soaked in rust-proof oil, then the sponge pad (3) is taken out, and the sponge pad (3) is fixed on the oil permeable film (2); S4, the oil separation film (4) is wrapped on the surface of the sponge pad (3), and the high-strength cold-rolled plate is processed.

Images