JPS6349273A - Magnetic roller for adhering corrosion inhibitive material - Google Patents

Abstract

PURPOSE:To adhere a corrosion inhibitive material onto the surface of a steel structure to a uniform thickness by providing projections to both ends of a cylindrical roller magnet and adhering said material to the surface of said structure by magnetic force while maintaining the specified spacing between the steel structure ant roller magnet. CONSTITUTION:The projections 2 are provided to both ends of the cylindrical roller magnet 1 and while the specified spacing between the ocean steel structure and the cylindrical roller magnet 1 is maintained, the rust inhibitive material is adhered under the specified pressure by the magnetic force to the surface of the steel structure at the time of adhering the rust inhibitive material to the steel structure. As a result, the shortening to the operation time, the adhesion of the rust inhibitive material to the uniform thickness and the adhering work to provide the uniform adhesive strength to the structure are permitted.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an adhesive roller. More specifically, the present invention relates to a roller for adhering anticorrosive materials to marine iron structures using magnetic force.

(Prior Art and Problems) In recent years, there has been an increase in the number of marine pickles such as piers and quays that have deteriorated considerably over the years.

One way to use these iron marine structures for a longer period of time is to glue or paint them with anti-corrosion coatings.

However, in the past, as there were no suitable tools for bonding anticorrosion materials to marine structures, the work was carried out by manually bonding the anticorrosion materials directly to the surface of the structure.

However, since this work is carried out underwater, there is insufficient scaffolding, it is difficult to apply force, and it is difficult to adhere with a constant pressure1.In addition, there are many uneven surfaces, and the anticorrosive material is adhered to a certain thickness. It was also difficult to do so. For this reason, even if anti-corrosion materials are glued or attached, there will be areas where sufficient adhesion strength cannot be obtained, causing them to peel off in a short period of time, or resulting in uneven thickness, resulting in unnecessary costs for expensive anti-corrosion materials. There were problems such as being exposed.

(Means for Solving the Problems) In view of the above circumstances, the inventors of the present invention have conducted various studies and found that when bonding anticorrosion materials to marine structures, a cylindrical roller magnet is provided with protrusions at both ends. , for adhering anticorrosion materials to marine structures, which is characterized by being able to adhere anticorrosion materials to the surface of iron structures using magnetic force at a constant pressure while maintaining a constant distance between the iron structures and roller magnets. This led to the invention of the roller.

In particular, a cylindrical roller magnet whose surface is covered with a hydrophilic sheet has excellent performance.

(Effect) The tangent phenomenon is caused by the attractive force between molecules, that is, the Van der Waals force, and it is also known that this attractive force is inversely proportional to the sixth power of the distance. Therefore, the key to adhesion is how to bring the two objects close together, and for this purpose, it is important to apply a strong pressing force and to spread it uniformly over the entire surface.

By using the roller for adhering anticorrosion materials for marine structures according to the present invention, it is possible to perform strong pushing with 11 forces. Since the cylindrical roller magnet is provided with protrusions at both ends, the distance between the iron structure and the roller magnet can be maintained constant, and - a constant thickness of anticorrosive material can be automatically bonded.

C. Because a constant pressure is applied to the entire surface of the adhesive,
Uniform adhesive strength can be obtained. There are advantages such as:

Therefore, by using the roller for adhering anticorrosive materials for marine iron structures of the present invention, uniform adhesion, which has been difficult to achieve in the past, can now be easily achieved.

Furthermore, if the anti-corrosion material adheres to the roller itself and makes the work worse, the surface of the cylindrical roller magnet of the present invention may be coated with a hydrophilic sheet, such as tanned leather, synthetic support, or synthetic resin sheet. By using the covered material and performing the adhesion work while wetting the surface with water, the anticorrosive material is prevented from adhering to the roller.

(Example) Examples of the roller for adhering anticorrosion materials for marine iron structures of the present invention will be described in detail, but the present invention is not limited thereto.

Example 1 A cylindrical roller magnet with a diameter of 48 ann and a length of 250 mm, one end of which is N pole and the other end of which is S pole, was provided with protrusions of 5 tun height at intervals of approximately 4 mm along the entire circumference of both ends. A roller magnet whose surface was roughly covered with tanned leather having a thickness of 1 my+ was prepared.

Select a flat marine iron @ pickle as the object to be anti-corrosion, first polish the surface with sandblasting, then apply the anti-corrosive material whose main component is epoxy resin to the roller for adhering anti-corrosive materials for marine iron structures according to the present invention. The adhesion work was carried out using Note that in the case of bonding work in water, the surface of the roller was wetted with water each time, and in the case of bonding work in air.

As a result, the work was completed in a short time, and the anticorrosive material was able to be bonded uniformly over the entire surface with a thickness of 4 mIn. When the adhesive strength was measured after 20 days, it was found that all parts had a bond strength of 30 to 3/ci or more. It turned out to be strong.

Comparative Example 1 For comparison, bonding work was performed directly by hand using the same anticorrosion material.

As a result, it takes 1.5 times as long as the example, and
There were more irregularities and the amount of anticorrosive material used was 1.3 times that of the example.

In addition, when the adhesive strength was measured after 20 days, it was found that
Although the strength was higher than Ky/aA, some of the strength was 10
There were parts that were as strong as Kg/c shoulders or 20Kylc scraps.

(Effects of the Invention) As can be seen by comparing the Examples and Comparative Examples, if the marine iron roller for corrosion-proofing of pickles of the present invention is used, the working time can be shortened and corrosion-proofing materials with uniform thickness can be obtained. It can be seen that it is possible to perform an adhesion operation with a bonding strength of 100% and a uniform bonding strength.

[Brief explanation of drawings]

FIG. 1 is a front view of a roller for adhering anticorrosive materials for marine iron structures according to the present invention, and FIG. 2 is a side view thereof. 1... Cylindrical roller magnet 2... Protrusion 3... Rotating shaft 4... Handle 5... Hydrophilic sheet

Claims (2)

[Claims] (1) When adhering an anticorrosion material to a marine iron structure, a cylindrical roller magnet is provided with protrusions on both ends, and while maintaining a constant distance between the iron structure and the roller magnet, the surface of the iron structure is A roller for adhering anti-corrosion materials to marine iron structures, characterized by being able to adhere anti-corrosion materials to marine iron structures using magnetic force at a constant pressure. (2) A roller for adhering anticorrosive materials to marine iron structures as set forth in claim 1, wherein the surface of a cylindrical roller magnet is covered with a hydrophilic sheet.