Porous structure pipe part phosphorization sealing device

Abstract

The utility model discloses a phosphating and sealing device for porous structure pipe parts, and belongs to the technical field of machinery. The device comprises a bolt, a nut, square iron, two pieces of semicircular iron, a rubber sheet and a rubber plug, and openings of the two pieces of semicircular iron are opposite to each other; square irons are fixed at two ends of an opening of each semicircular iron, and two bolts respectively penetrate through the two square irons on the same side in a matched manner and are locked by nuts; the bolt is located at the end, away from the semicircular iron, of the square iron. The circular rubber is arranged in the arc of the two semicircular iron. A workpiece is arranged in an inner ring of the rubber sheet, and the rubber plugs are inserted into holes in the circumferential direction of the workpiece respectively. According to the utility model, the tight combination of the product piece and the rubber plug can be effectively ensured, so that the phosphating solution cannot permeate into the inner hole of the pipe part, and a decisive effect on sealing is achieved.

Description

Technical Field

[0001] This utility model relates to a phosphating sealing device for porous tubular parts, belonging to the field of mechanical technology. Background Technology

[0002] Phosphating, a surface treatment process for steel parts, involves the formation of a thin, non-metallic, non-conductive, porous phosphate film on the metal surface through a chemical reaction. This process is commonly referred to as a conversion coating process.

[0003] Phosphating is widely used in industry, mainly for rust prevention of workpieces, lubrication during machining, and pretreatment before coating. Because the phosphate film is porous, coatings, lubricants, rust inhibitors, etc., can penetrate into these pores, significantly improving the adhesion, corrosion resistance, and lubrication performance of the coating.

[0004] Phosphating is widely used in artillery parts due to its numerous advantages. However, because phosphating involves a chemical reaction in a phosphating solution, a phosphating film forms on the steel surface once the solution penetrates. Therefore, when artillery parts require localized phosphating, a specialized sealing device must be designed to isolate the phosphating solution from the part. The sealing performance of this device determines the quality of the locally phosphated part. Traditional artillery tubes use a single threaded hole for sealing, while modern artillery tubes use multiple smooth holes, making sealing more challenging. A specialized tooling design has been developed for these multi-hole tubes. Utility Model Content

[0005] To overcome the difficulties of the existing technology, this utility model provides a phosphating sealing device for porous pipe parts. This device can effectively ensure that the product parts are tightly bonded to the rubber stopper, preventing the phosphating liquid from seeping into the inner hole of the pipe parts, and plays a decisive role in sealing.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a phosphating sealing device for porous pipe parts, including bolts, nuts, square iron, semi-circular iron, rubber and rubber plugs. There are two semi-circular irons, and the openings of the two semi-circular irons are opposite each other. Two bolts are respectively fitted through the two square irons on the same side and locked by nuts. The bolts are located at the end of the square iron away from the semi-circular iron. The circular rubber is placed in the arc of the two semi-circular irons. The workpiece is placed in the inner ring of the rubber, and several rubber plugs are respectively inserted into the holes in the circumferential direction of the workpiece.

[0007] The beneficial effects of this utility model are as follows: This utility model can effectively ensure a tight bond between the product part and the rubber stopper. During the phosphating process, as the temperature rises, the rubber stopper expands and adheres tightly to the part. Then, a secondary seal is achieved through the rubber sheet, preventing the rubber stopper from deviating from the workpiece and causing the phosphating solution to seep into the inner surface of the workpiece, forming a phosphating film and affecting the product's performance. The operation is simple, reducing the labor intensity of workers. It has strong versatility and can be widely applied to the phosphating sealing process of porous pipe parts with different diameters by adjusting the rubber sheet size and using a semi-circular iron fitting method. It effectively solves the problem of phosphating solution leakage on the inner surface of porous pipe parts caused by only performing phosphating on the outer surface. It has been successfully applied to the sealing device of the phosphating process on the outer surface of a certain product tube and has been practically verified in mass production. The effect is very ideal and can be promoted and applied. Attached Figure Description

[0008] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Numbering on the map:

[0011] 1. Bolt, 2. Nut, 3. Square iron, 4. Half-circular iron, 5. Rubber, 6. Rubber stopper. Detailed Implementation

[0012] like Figure 1 As shown, a phosphating sealing device for porous pipe parts includes bolts 1, nuts 2, square iron 3, semi-circular iron 4, rubber 5, and rubber plugs 6. There are two semi-circular irons 4, with their openings facing each other. Each semi-circular iron 4 has a square iron 3 fixed at both ends of its opening. Two bolts 1 are respectively fitted through the two square irons 3 on the same side and locked by nuts 2. The bolts 1 are located at the end of the square iron 3 away from the semi-circular iron 4. The circular rubber 5 is placed in the arc of the two semi-circular irons 4. The workpiece is placed in the inner ring of the rubber 5, and several rubber plugs 6 are respectively inserted into the holes in the circumference of the workpiece.

[0013] During use, first place the porous tube parts on a special wooden pad, then insert the rubber plug 6 into the hole and surround the porous tube with the rubber sheet 5; weld the square iron 3 and the semi-circular iron 4 together to form a small assembly; use this small assembly to clamp the rubber sheet 5, and use bolts 1 and nuts 2 to tighten this structure to complete the overall assembly of the process device.

[0014] For the structure of holes in porous tubular parts, drawings corresponding to the hole dimensions are drawn, and rubber plugs 6 are manufactured to seal the holes on the tubular parts. Rubber plugs 6 are the porous sealing structure of the device. Rubber material is selected because it has thermal expansion under high temperature and high pressure, which allows rubber plugs 6 to be more tightly bonded to the parts and prevent phosphating liquid from entering the inner hole.

[0015] When making the bolt fastening clamping structure of the device, first determine the size of the rubber sheet 5 according to the size of the multi-hole position of the part. One rubber sheet 5 is required. The width of the rubber sheet 5 must completely cover the multi-hole structure. The length of the rubber sheet 5 is the outer diameter of the multi-hole position. The thickness of the rubber sheet 5 should not be too thick. It is necessary to ensure its hardness and sealing performance, and it should be easy for the operator to operate. Generally, 6mm is selected.

[0016] Next, based on the outer diameter of the rubber sheet 5, determine the inner diameter of the semi-circular iron 4. Two semi-circular irons 4 are needed. Based on the outer diameter of the semi-circular iron 4, determine the radius of the welding position between the square iron 3 and the semi-circular iron 4. Four square irons 3 are needed. Weld two square irons 3 to one semi-circular iron 4 together. The two square irons are in opposite positions. The welding position is at the cut of the semi-circular iron 4, forming two sets of small components. Holes need to be made in the square iron 3 so that the bolt 1 can pass through the holes of the two small components and be connected with the nut 2.

[0017] Finally, bolt 1, nut 2, square iron 3, semi-circular iron 4, and rubber 5 form a bolt fastening and clamping structure; this structure plays a secondary sealing role, ensuring that the rubber plug 6 is more tightly connected to the hole, and preventing the phosphating solution from seeping into the inner hole of the pipe parts, which plays a decisive role in sealing.

Claims

1. A phosphating sealing device for porous tubular parts, characterized in that: Includes bolts (1), nuts (2), square iron (3), semi-circular iron (4), rubber (5), and rubber plugs (6). There are two semi-circular irons (4), with their openings facing each other. Each semi-circular iron (4) has a square iron (3) fixed at both ends of its opening. Two bolts (1) are respectively fitted through the two square irons (3) on the same side and locked by nuts (2). The bolts (1) are located at the end of the square iron (3) away from the semi-circular iron (4). The circular rubber (5) is placed in the arc of the two semi-circular irons (4). The workpiece is placed in the inner ring of the rubber (5), and several rubber plugs (6) are respectively inserted into the holes in the circumferential direction of the workpiece.

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