Cold-rolled precision steel pipe with good anti-rust performance

Abstract

The utility model discloses a cold-rolled precision steel pipe with good anti-rust performance, and belongs to the technical field of cold-rolled precision steel pipes. The cold-rolled precision steel pipe with the good anti-rust performance comprises a cold-rolled precision steel pipe base layer subjected to surface cleaning, a sand blasting treatment layer is arranged on the outer surface of the base layer, an adhesion layer is arranged on the outer side of the sand blasting treatment layer, a net hanging layer is arranged in the middle of the adhesion layer, and a corrosion-resistant coiled material wrapping layer is arranged on the outer side of the adhesion layer. By means of the base layer subjected to sand blasting treatment, the connection strength of the adhesion layer can be improved, the corrosion-resistant coiled material wrapping layer can be connected to the surface of the base layer through the adhesion layer, the connection strength between the corrosion-resistant coiled material wrapping layer and the base layer is improved, and due to blocking of the corrosion-resistant coiled material wrapping layer, water cannot make direct contact with the surface of the steel pipe; the steel pipe is prevented from rusting.

Description

Technical Field

[0001] The utility model relates to the technical field of cold-rolled precision steel pipes, and more specifically to a cold-rolled precision steel pipe with good anti-rust performance. Background Art

[0002] Precision steel pipe is a kind of high-precision steel pipe material after cold drawing or hot rolling. Due to the advantages of no oxide layer on the inner and outer walls of precision steel pipe, no leakage under high pressure, high precision, high finish, no deformation after cold bending, no cracks after expansion and flattening, it is mainly used to produce pneumatic or hydraulic components, such as cylinders or oil cylinders. It can be seamless pipes or welded pipes.

[0003] Precision steel pipes that have been cold rolled have many uses. Existing steel pipes use external coatings to prevent rust on precision steel pipes. However, after a long time, the coating on the surface of the steel pipe with this rust-proofing method is easy to peel off, and the coating on the surface will also fall off when it is impacted and rubbed. The exposed surface of the steel pipe will be rusted by water and oxygen. After a certain period of use, the rusted steel pipe will affect the performance of the equipment and pose a safety hazard. In addition, the cold-rolled precision steel pipe is inconvenient to connect and is prone to leakage.

[0004] The existing cold-rolled precision steel tubes have the above-mentioned problems. In view of this, we propose a cold-rolled precision steel tube with good anti-rust performance. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The utility model aims to provide a cold-rolled precision steel tube with good anti-rust performance, so as to solve the problem that the anti-rust coating on the surface of the existing cold-rolled precision steel tube is easy to peel off as mentioned in the above background technology.

[0007] 2. Technical solution

[0008] A cold-rolled precision steel pipe with good anti-rust performance comprises a cold-rolled precision steel pipe base having a surface cleaned, the outer surface of the base is provided with a sandblasting layer, the outer side of the sandblasting layer is provided with an adhesion layer, the middle part of the adhesion layer is provided with a mesh layer, and the outer side of the adhesion layer is provided with a corrosion-resistant coil wrapping layer.

[0009] Preferably, matching male connectors and female connectors are installed at both ends of the base layer, respectively, and the male connector and female connector are made of polymer materials.

[0010] Preferably, the outer side of the male connector is sleeved with sleeve 1, the outer side of the female connector is sleeved with sleeve 2, one end of the inner side of the male connector is provided with thread 1, the end of the outer side of the female connector is provided with thread 2, and the sleeve 1 and sleeve 2 are connected by thread 1 and thread 2.

[0011] Preferably, a groove is provided on one side of the male connector, and the groove is annular. A convex ring is provided on one side of the female connector to match the groove, and a water blocking strip is provided between the convex ring and the groove.

[0012] Preferably, the groove and the convex ring are respectively provided with convex parts.

[0013] Preferably, the outer side of the male connector is provided with a third thread, the inner side of the sleeve one is provided with a fourth thread matched with the third thread, and the sleeve one is threadedly connected with the third thread.

[0014] Preferably, a plug-in part 1 is provided on one side of the female connector, a plug-in part 2 matching with the plug-in part 1 is provided on the sleeve 2, a gap exists between the plug-in part 1 and the plug-in part 2, and a water blocking strip 2 is provided between the plug-in part 1 and the plug-in part 2.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. The utility model can increase the connection strength of the adhesive layer through the base layer treated by sandblasting. The corrosion-resistant coiled material wrapping layer can be connected to the surface of the base layer through the adhesive layer, thereby improving the connection strength between the corrosion-resistant coiled material wrapping layer and the base layer. Due to the barrier of the corrosion-resistant coiled material wrapping layer, water cannot directly contact the surface of the steel pipe, thereby avoiding rusting of the steel pipe.

[0018] 2. The utility model uses a male joint and a female joint, and sleeves 1 and 2 are respectively installed on the outer sides of the male joint and the female joint. Sleeve 1 is screwed on the male joint, and sleeve 2 is screwed on the female joint. Sleeve 1 and sleeve 2 can connect the male joint and the female joint together. There is a water blocking strip 1 between the male joint and the female joint, which can further improve the waterproof effect, avoid contact between the steel pipe and water, isolate the conditions for rusting of the steel pipe, and avoid rusting of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a left-side three-dimensional cross-sectional schematic diagram of the utility model;

[0021] Figure 3 For the utility model Figure 2 The enlarged view of point A in the middle;

[0022] Figure 4 For the utility model Figure 3 The enlarged view of point B in the middle;

[0023] Figure 5 For the utility model Figure 3 Enlarged view of point C in the middle;

[0024] Figure 6 It is a schematic diagram of the connection structure between the base layer and the corrosion-resistant coiled material wrapping layer of the utility model.

[0025] Explanation of the numbers in the figure: 1. base layer; 2. sandblasting layer; 3. adhesion layer; 4. mesh layer; 5. corrosion-resistant coil wrapping layer; 6. male connector; 7. female connector; 8. casing one; 9. casing two; 10. thread one; 11. thread two; 12. groove; 13. convex ring; 14. water-blocking strip one; 15. convex part; 16. thread three; 17. thread four; 18. plug-in part one; 19. plug-in part two; 20. water-blocking strip two. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] See also Figure 1-6 ,The utility model provides a technical solution:

[0030] A cold-rolled precision steel pipe with good anti-rust performance comprises a cold-rolled precision steel pipe base 1 which has been surface-cleaned, the outer surface of the base 1 is provided with a sandblasting layer 2, the outer side of the sandblasting layer 2 is provided with an adhesion layer 3, the middle part of the adhesion layer 3 is provided with a mesh layer 4, and the outer side of the adhesion layer 3 is provided with a corrosion-resistant coil wrapping layer 5.

[0031] The utility model sets a base layer 1, which is a base layer 1 made of cold-rolled precision steel pipe. The outer surface of the base layer 1 is sandblasted to make the surface of the base layer 1 rough. Then the surface of the base layer 1 is cleaned. The surface of the cleaned base layer 1 is covered with a mesh layer 4, and then the mesh is fixed with an adhesive layer 3. Since the sandblasting layer 2 makes the surface of the base layer 1 rough, the connection strength between the adhesive layer 3 and the base layer 1 can be improved, so that the adhesive layer 3 can be stably fixed to the surface of the base layer 1, and the mesh layer 4 can prevent the adhesive layer 3 from peeling off from the base layer 1. The corrosion-resistant coil wrapping layer 5 is wrapped on the outside of the adhesive layer 3, which can prevent the outer surface of the base layer 1 from rusting, and prevent the cold-rolled precision steel pipe from rusting.

[0032] Specifically, matching male connectors 6 and female connectors 7 are respectively installed at both ends of the base layer 1. The male connector 6 and female connector 7 are made of polymer materials. The male connector 6 and female connector 7 can facilitate the connection of two sections of cold-rolled precision steel pipes. The male connector 6 is stably fixed at the end of the base layer 1, and at the same time, it can prevent water from entering between the two sections of cold-rolled precision steel pipes, thereby improving the sealing effect.

[0033] Furthermore, the outer side of the male connector 6 is sleeved with a sleeve 8, the outer side of the female connector 7 is sleeved with a sleeve 2 9, one end of the inner side of the male connector 6 is provided with a thread 10, and the end of the outer side of the female connector 7 is provided with a thread 2 11. The sleeve 1 8 and the sleeve 2 9 are connected by threads 10 and 11, and the sleeve 1 8 and the sleeve 2 9 are respectively sleeved on the outer sides of the male connector 6 and the female connector 7. The thread 10 and the thread 2 11 can connect the male connector 6 and the female connector 7 together, which is convenient for connecting two sections of cold-rolled precision steel pipes together.

[0034] It is worth mentioning that a groove 12 is provided on one side of the male connector 6, and the groove 12 is annular. A convex ring 13 is provided on one side of the female connector 7 to match the groove 12. A water blocking strip 14 is provided between the convex ring 13 and the groove 12. The convex ring 13 can be inserted into the groove 12. The water blocking strip 14 is located in the groove 12. The water blocking strip 14 is a water-swelling water stop strip commonly used on the market. The water blocking strip 14 is annular and will expand when it comes into contact with water, thereby further improving the sealing effect.

[0035] It is worth noting that the groove 12 and the convex ring 13 are respectively provided with a convex portion 15, which is located on the groove 12 and the convex ring 13 respectively. After the water blocking strip expands when encountering water, the convex portion 15 on the groove 12 and the convex ring 13 can increase the contact area of ​​the water blocking strip 14, further improving the sealing effect.

[0036] In addition, the outer side of the male connector 6 is provided with a thread three 16, and the inner side of the sleeve 8 is provided with a thread four 17 adapted to the thread three 16. The sleeve 8 is screwed with the thread three 16. The thread three 16 and the thread four 17 can enable the sleeve 8 to rotate and fix on the male connector 6, thereby facilitating the connection between the two steel pipes.

[0037] It has to be said that a plug-in portion 18 is provided on one side of the female connector 7, and a plug-in portion 19 matching the plug-in portion 18 is provided on the sleeve 9, and there is a gap between the plug-in portion 18 and the plug-in portion 19, and a water-blocking strip 20 is provided between the plug-in portion 18 and the plug-in portion 19. The water-blocking strip 20 is a water-swelling water-stop strip commonly used on the market. The water-blocking strip 20 is located between the plug-in portion 18 and the plug-in portion 19, which can further improve the sealing effect between the female connector 7 and the sleeve 9 to avoid leakage.

[0038] Working principle: when two cold-rolled precision steel pipes need to be connected, the water-blocking strip 14 is placed in the groove 12 in advance, and the water-blocking strip 20 is placed between the plug-in part 18 and the plug-in part 2 19. First, the male connector 6 and the female connector 7 are connected, and then the sleeve 18 on the male connector 6 is rotated to screw the sleeve 18 onto the male connector 6. After the sleeve 18 is fixed, the sleeve 29 is rotated to screw the collar 2 onto the sleeve 18. In this way, the fixation between the two steel pipes can be completed. When water contacts the water-blocking strip 14 and the water-blocking strip 20, the water-blocking strip 14 and the water-blocking strip 20 will swell and become larger due to rainwater. The enlarged water-blocking strip 14 and the water-blocking strip 20 will block the gap between the male connector 6 and the female connector 7, thereby facilitating the connection between the two steel pipes.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A cold-rolled precision steel tube with good rust resistance, characterized in that: The invention comprises a cold-rolled precision steel pipe base (1) which has been surface-cleaned, wherein the outer surface of the base (1) is provided with a sandblasting layer (2), the outer side of the sandblasting layer (2) is provided with an adhesive layer (3), the middle part of the adhesive layer (3) is provided with a mesh layer (4), and the outer side of the adhesive layer (3) is provided with a corrosion-resistant coil wrapping layer (5).

2. A cold-rolled precision steel tube with good rust resistance according to claim 1, characterized in that: The two ends of the base layer (1) are respectively provided with a matching male connector (6) and a female connector (7), and the male connector (6) and the female connector (7) are made of polymer materials.

3. A cold-rolled precision steel tube with good rust resistance according to claim 2, characterized in that: The outer side of the male connector (6) is sleeved with a sleeve 1 (8), the outer side of the female connector (7) is sleeved with a sleeve 2 (9), one end of the inner side of the male connector (6) is provided with a thread 1 (10), the outer end of the female connector (7) is provided with a thread 2 (11), and the sleeve 1 (8) and the sleeve 2 (9) are connected via the thread 1 (10) and the thread 2 (11).

4. The cold-rolled precision steel tube with good rust resistance according to claim 3, characterized in that: A groove (12) is provided on one side of the male connector (6), and the groove (12) is annular. A convex ring (13) is provided on one side of the female connector (7) to match the groove (12), and a water blocking strip (14) is provided between the convex ring (13) and the groove (12).

5. The cold-rolled precision steel tube with good rust resistance according to claim 4, characterized in that: The groove (12) and the convex ring (13) are respectively provided with convex parts (15).

6. The cold-rolled precision steel tube with good rust resistance according to claim 5, characterized in that: The outer side of the male connector (6) is provided with a third thread (16), the inner side of the sleeve (8) is provided with a fourth thread (17) adapted to the third thread (16), and the sleeve (8) is threadedly connected to the third thread (16).

7. The cold-rolled precision steel tube with good rust resistance according to claim 3, characterized in that: A plug-in portion 1 (18) is provided on one side of the female connector (7), a plug-in portion 2 (19) matching the plug-in portion 1 (18) is provided on the sleeve (9), a gap exists between the plug-in portion 1 (18) and the plug-in portion 2 (19), and a water blocking strip 2 (20) is provided between the plug-in portion 1 (18) and the plug-in portion 2 (19).

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