Seamless steel tube passivation device
By designing a seamless steel pipe passivation device with clamping limit and rolling mechanism, the problem of uneven passivation film is solved, and the uniform passivation treatment of seamless steel pipes is achieved, which improves corrosion resistance and service life.
Patent Information
- Application Number
- CN202422126710.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-30
AI Technical Summary
In the existing seamless steel pipe passivation treatment, the passivation film is unevenly formed, resulting in insufficient anti-corrosion performance.
A seamless steel pipe passivation device including a passivation tank and a clamping limiting mechanism is designed. Through the combination of the elastic mechanism and the rolling mechanism, the seamless steel pipe is ensured to be uniformly immersed in the passivation tank. The sliding action of the elastic members and sliders is used to achieve stable clamping and movement of the steel pipe, and the rolling of the balls ensures that the passivation agent is in uniform contact with the surface of the steel pipe.
The uniformity of the outer passivation layer of seamless steel pipes is achieved, the corrosion resistance is improved, and the service life is extended.
Smart Images
Figure CN223118557U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of passivation devices, and particularly relates to a seamless steel pipe passivation device. Background Art
[0002] A seamless steel pipe refers to a steel pipe made of a whole piece of metal without seams on its surface. During the processing of seamless steel pipes, in order to better improve their anti-corrosion performance and extend their service life, it is often necessary to passivate the surface of the steel pipes. When a metal is treated with an oxidizing medium, the phenomenon that its corrosion rate is significantly lower than that before treatment is called the passivation of the metal. The passivation mechanism can mainly be explained by the thin film theory, that is, it is considered that passivation is due to the action of the metal and the oxidizing medium. When acting, a very thin, dense, well-covered and firmly attached passivation film is formed on the metal surface. This film exists as an independent phase, usually a compound of oxygen and metal. It plays a role in completely separating the metal from the corrosive medium, preventing the metal from directly contacting the corrosive medium, so that the metal basically stops dissolving and forms a passive state to achieve the effect of preventing corrosion.
[0003] In the existing passivation of seamless steel pipes, the passivation agent is usually directly sprayed on the outer wall of the seamless steel pipe, so that a passivation film can be formed on the seamless steel pipe after spraying. However, this passivation method cannot ensure the uniform formation of the passivation film on the outer wall of the seamless steel pipe. Summary of the Utility Model
[0004] The utility model aims at the problems existing in the prior art and proposes the following technical solutions:
[0005] A seamless steel pipe passivation device includes a passivation tank. Inside the passivation tank, a side plate is connected under the cooperation of a rolling mechanism, and the side plate is installed at the bottom end of a pull rod. The inner side wall of the side plate is connected with an extrusion side plate through an elastic mechanism.
[0006] As a preference of the above technical solution, the elastic mechanism includes a first slot opened on the inner side wall of the side plate, and a first elastic member is connected in the first slot. The inner side of the first elastic member is connected to the outer wall of a movable rod. The inner side of the movable rod penetrates through the outer wall of the side plate and is connected to the outer wall of the extrusion side plate. First slide rails are symmetrically opened on the inner wall of the first slot, and first sliders are slidably connected in the first slide rails. The first sliders are installed on the outer wall of the movable rod.
[0007] As a preference of the above technical solution, a soft pad is connected to the inner wall of the extrusion side plate.
[0008] As a preference of the above technical solution, the rolling mechanism includes second slots equidistantly opened on the outer side wall of the side plate, and a second elastic member is connected in the second slots. The outer side of the second elastic member is connected to the mounting frame. The outer wall of the mounting frame is connected with rolling balls in a rolling manner, and the outer walls of the rolling balls are in rolling contact with the inner wall of the passivation tank. Second slide rails are symmetrically opened on the inner wall of the second slots, and second sliders are slidably connected in the second slide rails, and the second sliders are connected to the outer wall of the mounting frame.
[0009] The beneficial effects of the present utility model are as follows:
[0010] In this application, the passivating agent is placed in the passivation tank, and the seamless steel pipe to be passivated is immersed in the passivation tank through the clamping and limiting mechanism, so as to ensure the uniformity of the passivation layer on the outer side of the seamless steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 The schematic diagram of the internal structure in the front view state provided by the embodiment of the present utility model is shown;
[0012] Figure 2 Shown in the embodiment of the present utility model Figure 1 The enlarged structural schematic diagram at A in.
[0013] Legend description:
[0014] 1. Passivation tank; 2. Side plate; 3. Pull rod; 4. First slot; 5. First elastic member; 6. Moving rod; 7. First slider; 8. First slide rail; 9. Extrusion side plate; 10. Soft pad; 11. Second slot; 12. Second elastic member; 13. Mounting frame; 14. Second slider; 15. Second slide rail; 16. Rolling ball. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments.
[0016] In view of the problem of uneven spraying of the passivation layer on the outer layer of seamless steel pipes in the prior art, the passivating agent is placed in the passivation tank 1, and the seamless steel pipe to be passivated is immersed in the passivation tank 1 through the clamping and limiting mechanism, so as to ensure the uniformity of the passivation layer on the outer side of the seamless steel pipe.
[0017] As Figure 1 and Figure 2 shown, in the embodiment of the present utility model, this seamless steel pipe passivation device includes a passivation tank 1; in the prior art, the passivating agent is stored in the passivation tank 1, and the ratio and temperature control of the passivating agent are directly cited from the prior art, and will not be elaborated here too much.
[0018] As Figure 1 andFigure 2 As shown in the figure, a side plate 2 is connected inside the passivation tank 1 with the cooperation of a rolling mechanism, and the side plate 2 is installed at the bottom end of a pull rod 3. The inner side wall of the side plate 2 is connected with a pressing side plate 9 through an elastic mechanism; the seamless steel pipe to be passivated is placed inside the two pressing side plates 9, and it is limited and locked under the cooperation of the elastic mechanism. The limited seamless steel pipe is lifted and lowered inside the passivation tank 1 with the cooperation of the rolling mechanism to complete the passivation operation; the elastic mechanism includes a first slot 4 opened on the inner side wall of the side plate 2, and a first elastic member 5 is connected inside the first slot 4. The inner side of the first elastic member 5 is connected to the outer wall of a movable rod 6. The inner side of the movable rod 6 penetrates through the outer wall of the side plate 2 and is connected to the outer wall of the pressing side plate 9. First slide rails 8 are symmetrically opened on the inner wall of the first slot 4, and a first slider 7 is slidably connected inside the first slide rail 8. The first slider 7 is installed on the outer wall of the movable rod 6; under the action of the elastic potential energy of the first elastic member 5, the pressing side plate 9 is driven to move relatively. The seamless steel pipe to be passivated is placed on the inner side walls of the two pressing side plates 9. After abutting against the inner side walls of the pressing side plates 9, with the elastic compression force of the first elastic member 5 and the sliding action of the first slider 7 and the first slide rail 8, the stability of the movement of the movable rod 6 can be guaranteed; a soft pad 10 is connected to the inner wall of the pressing side plate 9; under the protection of the soft pad 10, the outer wall of the seamless steel pipe to be clamped is wrapped and abutted, further increasing the contact area of the abutment.
[0019] As Figure 1 and Figure 2 shown in the figure, the rolling mechanism includes second slots 11 opened equidistantly on the outer side wall of the side plate 2, and a second elastic member 12 is connected inside the second slots 11. The outer side of the second elastic member 12 is connected to a mounting frame 13. Ball beads 16 are rotatably connected to the outer wall of the mounting frame 13, and the outer walls of the ball beads 16 are rotatably abutted against the inner wall of the passivation tank 1. Second slide rails 15 are symmetrically opened on the inner wall of the second slots 11, and a second slider 14 is slidably connected inside the second slide rail 15, and the second slider 14 is connected to the outer wall of the mounting frame 13; under the rolling action of the ball beads 16, the side plate 2 can move relatively stably inside the passivation tank 1. At the same time, under the action of the elastic potential energy of the second elastic member 12, the outer wall of the ball bead 16 can be abutted and rotatably abutted against the inner wall of the passivation tank 1. At the same time, under the action of the elastic potential energy of the second elastic member 12, the stability of the side plate 2 abutting against the inner wall of the passivation tank 1 and moving is guaranteed.
[0020] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.
Claims
1. Seamless steel pipe passivation device, including a passivation tank (1), characterized in that: Inside the passivation tank (1), a side plate (2) is connected under the cooperation of a rolling mechanism, and the side plate (2) is installed at the bottom end of a pull rod (3). An extrusion side plate (9) is connected to the inner side wall of the side plate (2) through an elastic mechanism.
2. The seamless steel pipe passivation device according to claim 1, characterized in that, The elastic mechanism includes a first slot (4) opened on the inner side wall of the side plate (2). A first elastic member (5) is connected in the first slot (4). The inner side of the first elastic member (5) is connected to the outer wall of a movable rod (6). The inner side of the movable rod (6) penetrates through the outer wall of the side plate (2) and is connected to the outer wall of the extrusion side plate (9). First slide rails (8) are symmetrically opened on the inner wall of the first slot (4). A first slider (7) is slidably connected in the first slide rails (8). The first slider (7) is installed on the outer wall of the movable rod (6).
3. The seamless steel pipe passivation device according to claim 2, characterized in that, A soft pad (10) is connected to the inner wall of the extrusion side plate (9).
4. The seamless steel pipe passivation device according to claim 1, characterized in that, The rolling mechanism includes second slots (11) equidistantly opened on the outer side wall of the side plate (2). A second elastic member (12) is connected in the second slots (11). The outer side of the second elastic member (12) is connected to a mounting frame (13). Ball beads (16) are rotatably connected to the outer wall of the mounting frame (13). The outer walls of the ball beads (16) are rotatably abutted against the inner wall of the passivation tank (1). Second slide rails (15) are symmetrically opened on the inner wall of the second slots (11). A second slider (14) is slidably connected in the second slide rails (15). The second slider (14) is connected to the outer wall of the mounting frame (13).