Rust prevention treatment methods for cylindrical components.

Abstract

DEPCT68 Rust prevention treatment methods for cylindrical components, depending on their characteristics. The purpose of this invention is a method of rust-preventive conditioning for cylindrical and assembled parts. This includes the process of preparing the first end of the first end at one end of... A cylindrical component for sealing the other end; the material insertion process. Rust prevention involves inserting rust-preventive materials, including materials that inhibit the spread of rust. A volatile rust inhibitor is encapsulated with a diffusion inhibitor and an adhesive sheet. A design intended to hold and retain volatile rust inhibitors within cylindrical components. The process of creating the second end involves placing a second end at one end. A cylindrical component is positioned opposite one end to seal that end. After the rust-preventive material is packed into the cylindrical assembly parts and the manufacturing process begins. The rust inhibitor is vaporized, causing the volatile rust inhibitor to evaporate;

Description

Rust prevention treatment method for cylindrical member

[0001] The present invention relates to a method for rust prevention treatment of a cylindrical member.

[0002] A stabilizer used in a vehicle or the like is attached to the vehicle to stabilize the vehicle's posture. A known stabilizer is a deformed hollow cylindrical member to reduce the vehicle's weight. When a stabilizer is manufactured using a cylindrical member, it is required that the interior of the stabilizer have a rust-preventing function. For example, in Patent Document 1, a volatile powder rust inhibitor is enclosed inside the stabilizer, and a rust-preventing film is formed inside the stabilizer by vaporizing the volatile rust inhibitor.

[0003] International Publication No. 2017 / 170787

[0004] However, volatile rust inhibitors are in the form of powder, which makes them difficult to handle and makes rust prevention treatment difficult in some cases.

[0005] The present invention has been made in view of the above, and has an object to provide a method for rust prevention treatment of a cylindrical member that can easily perform rust prevention treatment on the inside of the cylindrical member.

[0006] In order to solve the above-mentioned problems and achieve the object, the rust prevention treatment method for a tubular member of the present invention is a rust prevention treatment method for a tubular member, characterized in that it includes: a first end forming step of forming a first end at one end of the tubular member to seal the one end; a rust prevention material inserting step of inserting into the tubular member a rust prevention material having a scattering-inhibiting material, a volatile rust prevention agent covered by the scattering-inhibiting material, and a retaining sheet that holds the volatile rust prevention agent; a second end forming step of forming a second end at an end of the tubular member opposite the first end to seal the end after the rust prevention material is accommodated in the tubular member; and a rust prevention agent vaporizing step of vaporizing the volatile rust prevention agent.

[0007] Furthermore, in the method for rust prevention treatment of a cylindrical member according to the present invention, the holding sheet is in the form of a sheet on which the volatile rust inhibitor and the scattering suppression material are placed.

[0008] Furthermore, the method for rust prevention treatment of a tubular member according to the present invention is characterized in that, in the above invention, the holding sheet is bag-shaped and encases the volatile rust inhibitor and the scattering-suppressing material.

[0009] Furthermore, in the method for rust prevention treatment of a cylindrical member according to the present invention, the scattering-suppressing material is a liquid or solid that is viscous at room temperature.

[0010] According to the present invention, it is possible to easily perform rust prevention treatment on the inside of the stabilizer.

[0011] FIG. 1 is a perspective view showing an example of a suspension mechanism including a stabilizer according to an embodiment of the present invention. FIG. 2 is a plan view showing the configuration of the stabilizer shown in FIG. 1. FIG. 3 is a perspective view showing the configuration of a tubular member for manufacturing the stabilizer according to an embodiment of the present invention. FIG. 4 is a perspective view illustrating the configuration of a rust-preventive material used during rust-preventive treatment. FIG. 5 is a cross-sectional view taken along line A-A shown in FIG. 4. FIG. 6 is a diagram (part 1) illustrating the rust-preventive treatment performed on the interior of the stabilizer according to an embodiment of the present invention. FIG. 7 is a diagram (part 2) illustrating the rust-preventive treatment performed on the interior of the stabilizer according to an embodiment of the present invention. FIG. 8 is a diagram (part 3) illustrating the rust-preventive treatment performed on the interior of the stabilizer according to an embodiment of the present invention. FIG. 9 is a diagram (part 4) illustrating the rust-preventive treatment performed on the interior of the stabilizer according to an embodiment of the present invention. FIG. 10 is a perspective view illustrating the configuration of a rust-preventive material according to a modified example.

[0012] Hereinafter, embodiments of the present invention (hereinafter referred to as "embodiments") will be described with reference to the accompanying drawings. Note that the drawings are schematic, and the relationship between the thickness and width of each part, the thickness ratio of each part, etc. may differ from the actual ones, and the drawings may also include parts with different dimensional relationships and ratios.

[0013] (Embodiment) Fig. 1 is a perspective view showing an example of a suspension mechanism including a stabilizer according to an embodiment of the present invention. The suspension mechanism 100 shown in Fig. 1 includes a stabilizer 1, suspensions 101 and 102, and links 103 and 104. The suspensions 101 and 102 include expandable and contractible coil springs. When the suspension mechanism 100 is installed in an automobile, the stabilizers 101 and 102 are respectively provided for tires 111 and 112 (e.g., front wheels) to absorb vibrations transmitted from the tires 111 and 112 in response to unevenness in the road surface. The stabilizer 1 and the suspensions 101 and 102 are connected via links 103 and 104, respectively.

[0014] Fig. 2 is a plan view showing the configuration of the stabilizer shown in Fig. 1. The stabilizer 1 is a hollow columnar member (tubular member) made of metal or various fibers (e.g., carbon fiber), and is made of a material with a 0.2% yield strength in the range of 1000 to 1600 MPa, for example. The stabilizer 1 has a main body 10, a first end 11 connected to one end of the main body 10, and a second end 12 connected to the other end of the main body 10.

[0015] The main body 10 has a linear center and curved ends. The first end 11 and the second end 12 are each formed by crushing a cylindrical member into a flat shape. Each of the first end 11 and the second end 12 has a through-hole (not shown) through which a fastening member is inserted.

[0016] Next, the rust prevention treatment for the inside of the stabilizer 1 will be described with reference to Figures 3 to 9. The stabilizer 1 is manufactured by processing a base material.

[0017] 3 is a perspective view showing the configuration of a tubular member for manufacturing a stabilizer according to one embodiment of the present invention. The tubular member 20, which serves as the base material for the stabilizer 1, has a cylindrical shape with uniform inner and outer diameters. The thickness of the tubular member 20 is the same as the thickness of the main body 10 of the stabilizer 1, for example.

[0018] Fig. 4 is a perspective view illustrating the configuration of a rust-preventive material used in rust prevention treatment. Fig. 5 is a cross-sectional view taken along line A-A in Fig. 4. In this embodiment, rust-preventive material 30 is used in rust prevention treatment. Rust-preventive material 30 has a holding sheet 31, a volatile rust-preventive agent 32, and a scattering-suppressing material 33. Rust-preventive material 30 is formed by covering volatile rust-preventive agent 32 placed on holding sheet 31 with scattering-suppressing material 33 (see Fig. 4).

[0019] The holding sheet 31 is formed using, for example, Japanese paper, paraffin paper, or the like.

[0020] The volatile corrosion inhibitor 32 is, for example, a powder, and the rust-preventing component evaporates when heated. The temperature at which the rust-preventing component evaporates is either room temperature or is set according to the heating temperature to which the component is heated after being enclosed in the cylindrical member 20. Examples of the volatile corrosion inhibitor 32 include "VERZONE Eco Super K" (manufactured by Daiwa Kasei Co., Ltd.) and "Zerust (registered trademark) ActivPowder TM (LS)-10F (Northern Technologies International) can be used.

[0021] The scattering suppression material 33 is made of an oily substance (for example, wax) and is a viscous liquid or solid at room temperature. For example, a hot melt adhesive (glue stick) is used as the scattering suppression material 33.

[0022] 6 to 9 are diagrams illustrating the rust prevention treatment applied to the inside of a stabilizer according to an embodiment of the present invention. Here, the rust prevention treatment is described for the case where a stabilizer is manufactured using the cylindrical member 20 shown in FIG.

[0023] First, one end of the cylindrical member 20 is crushed to form a flat shape, and one end of the cylindrical member 20 is closed (see FIG. 6 ). As a result, an opening 20a is formed on only one side of the cylindrical member 20, and a first end 21 having a flat shape is formed on the other end (first end forming step).

[0024] Thereafter, the rust-preventive material 30 is accommodated in the tubular member 20 (see FIG. 7 ). At this time, the rust-preventive material 30 is inserted through the opening 20 a of the tubular member 20 (rust-preventive material insertion step). Note that the rust-preventive material 30 may be inserted into the tubular member 20 before the first end 21 is formed, as long as the rust-preventive material 30 does not come off the tubular member 20.

[0025] After the rust-preventive material 30 is accommodated, the end of the tubular member 20 on the opening 20a side is crushed to form a flattened shape, resulting in a shape in which both ends of the tubular member 20 are closed (see FIG. 8 ). As a result, a flattened second end 22 is formed at the end of the tubular member 20 opposite the first end 21 (second end forming step). As a result, the tubular member 20 has a shape in which both ends are closed by the first end 21 and the second end. As a result, the rust-preventive material 30 is enclosed within the tubular member 20.

[0026] Thereafter, the volatile corrosion inhibitor 32 is vaporized (rust inhibitor vaporization step: see FIG. 9 ). At this time, if the volatile corrosion inhibitor 32 vaporizes at room temperature, it is left at room temperature for the time required for vaporization. On the other hand, if the vaporization temperature is high, the cylindrical member 20 is heated. The heating temperature is set to a temperature higher than the temperature at which the volatile corrosion inhibitor 32 vaporizes, for example. At this time, the vaporized volatile corrosion inhibitor 32 passes through the gap between the holding sheet 31 and the scattering-suppressing material 33 and permeates the scattering-suppressing material 33, spreading throughout the interior space of the cylindrical member 20.

[0027] Although only the internal rust prevention treatment has been described here, when manufacturing the stabilizer 1 using the cylindrical member 20, known treatments such as shape forming, hardening, tempering, shot peening, etc. are performed.

[0028] In this embodiment, rust prevention treatment can be performed by placing rust prevention material 30, which is made by covering volatile rust inhibitor 32 placed on holding sheet 31 with scattering suppression material 33, inside cylindrical member 20 and performing heat treatment. According to this embodiment, powdered volatile rust inhibitor 32 can be easily handled during rust prevention treatment, and as a result, rust prevention treatment can be easily performed inside the stabilizer.

[0029] (Modification) Next, a modification of the present embodiment will be described with reference to Fig. 10. In this modification, the configuration of the rust preventive material is different from that of the rust preventive material according to the embodiment. Fig. 10 is a perspective view for explaining the configuration of the rust preventive material according to the modification.

[0030] The rust preventive material 30A is formed by holding a holding sheet 31 that holds a volatile rust inhibitor 32 and a scatter-suppressing material 33. Specifically, in this modification, the holding sheet 31 is bag-shaped and encases the volatile rust inhibitor 32 and the scatter-suppressing material 33. While the holding sheet 31 is bag-shaped by gathering the outer edges of the sheet in this example, other shapes may be used, such as forming the holding sheet 31 into a cylindrical shape and then twisting both ends to encase the volatile rust inhibitor 32 and the scatter-suppressing material 33.

[0031] The rust-preventive material 30A is handled in the same manner as in the embodiment during the rust-preventive treatment.

[0032] In this modification, as in the above-described embodiment, rust prevention treatment can be performed by placing rust prevention material 30A, which is obtained by wrapping volatile rust inhibitor 32 covered with scattering-suppressing material 33 in holding sheet 31, inside cylindrical member 20 and then performing heat treatment. According to this modification, powdered volatile rust inhibitor 32 can be easily handled during rust prevention treatment, and as a result, rust prevention treatment can be easily performed inside the stabilizer.

[0033] Furthermore, according to this modified example, the volatile rust inhibitor 32 and the scattering suppression material 33 are enclosed in the holding sheet 31, which makes them easier to handle compared to when they are placed on a sheet as in the embodiment.

[0034] When the rust prevention treatment is automated, the treatment is performed while the tubular member 20 is sent to each treatment position. For example, the rust prevention material 30 is accommodated in the tubular member 20 by air or the like at the opening 20a of the tubular member 20 where the first end 21 has been formed. After accommodation, the tubular member 20 is transported to a predetermined treatment position, where the second end 22 is formed and a heat treatment are performed. By performing this process for each tubular member 20, the rust prevention treatment can be performed continuously.

[0035] Although the embodiments of the present invention have been described above, the present invention should not be limited to the above-described embodiments. For example, the present invention can be applied to a product in which a gas such as a rust inhibitor is sealed on the inner circumferential surface of a cylindrical member.

[0036] As such, the present invention may include various embodiments not described here, and various design changes may be made within the scope of the technical idea specified by the claims.

[0037] As described above, the method for manufacturing a stabilizer according to the present invention is suitable for easily performing rust prevention treatment on the inside of a stabilizer.

[0038] REFERENCE SIGNS LIST 1 stabilizer 10 main body 11, 21 first end 12, 22 second end 20 cylindrical member 30, 30A rust inhibitor 31 holding sheet 32 ​​volatile rust inhibitor 33 scattering suppression material

Claims

DEPCT681. A rust-preventive conditioning method for cylindrical components, consisting of two steps:

1. End preparation: Preparing one end of the cylindrical component to seal the other end.

2. Insertion of rust-preventive material: Inserting rust-preventive material, including diffusion inhibitor and volatile rust inhibitor, covered with diffusion inhibitor and bonded with an adhesive plate, arranged to secure the volatile rust inhibitor within the cylindrical component.

3. End preparation: Preparing a second end of the cylindrical component opposite the first end to seal that end after the rust-preventive material has been packed into the cylindrical component.

4. Vaporization of the rust-preventive material: Vaporizing the volatile rust inhibitor.

1. A rust-preventive conditioning method for cylindrical components under Claim 1 where the adhesive sheet is in the form of a plate and is structured to hold volatile rust inhibitors and diffusion inhibitors.

2. A rust-preventive conditioning method for cylindrical components under Claim 1 where the adhesive sheet is in the form of a bag and is structured to contain volatile rust inhibitors and diffusion inhibitors.

3. A rust-preventive conditioning method for cylindrical components under Claim 1 where the diffusion inhibitor is a viscous liquid or a solid at room temperature.

Images