JPS6193515A - Surface treatment for insulator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) The present invention relates to a method for treating the surface of an insulator, and more specifically to a method of baking a glaze onto a part of the surface of an insulator. be.

(Prior Art) A method of baking a glaze on the surface of a porcelain insulator is to apply a glaze to the surface of the insulator body before firing, and then fire it in a furnace. If the surface of the product is partially unglazed or discolored due to some foreign matter, the product is either discarded or the defective areas are glazed and the entire product is fired for a second time. It was necessary to do this.

(Problems to be Solved by the Invention) As described above, the work of firing a product twice is not only extremely troublesome, but also increases costs, making it impossible to reduce the cost of the product. An object of the present invention is to extremely easily perform the work of partially baking glaze onto the surface of an insulator.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention removes a part of the insulator surface and fired glaze layer, cleans the intervening area, and then applies unfired glaze. However, a method is adopted in which the glaze is locally irradiated with electromagnetic waves such as a laser or high frequency to bake the fired glaze layer.

(Function) By employing the above means, the present invention employs the above means, so that when the locally applied unfired glaze is irradiated with electromagnetic waves, the glaze is heated to a high temperature and fired to solidify, thereby forming a fired glaze layer and an unfired glaze layer. When the electromagnetic waves spread to the boundary between the glaze and the glaze, the fired glaze layer is also melted, and the molten unfired glaze and the fused unfired glaze intersect and solidify into a glass shape. In the present invention, the glaze is baked onto the insulator surface by locally irradiating electromagnetic waves such as Rayleigh and high frequency waves to a part of the pre-prepared surface, thereby minimizing the F energy required for baking. Baked examples are extremely easy to work with.

(Example) Hereinafter, an example embodying the present invention will be described with reference to the drawings. Referring to FIG. 3, the sheath 11 generator used in the insulator surface treatment method will be explained. A pair of front and rear discharge electrodes 2 and 3 are arranged in a closed container 1, and are connected to an external i-current power source 4. . A total reflection mirror 5 and an output VL 6 are arranged opposite to each other at both the front and rear ends of the sealed container 1, and a heater 7 and a gas blower 8 are housed in the sides of the sealed container 1. , N2. The insulator 12 on the insulator support stand 11 is guided through the inside to the irradiation nozzle 10.
It is designed so that it is irradiated towards the target.

Next, using the laser generator described above, a method for repairing a locally-produced glaze defect on the surface of the insulator 12 is shown in FIG.
This will be explained based on a) to <e> and FIG. 2.

FIG. 1(a) shows an enlarged view of the surface layer of the insulator 12. A glaze 14 is fired and solidified (hereinafter referred to as fired glaze layer 14) on the surface of the insulator body 13 made of porcelain, and a mixed layer is formed between the two. 1
5 is formed, and a fired glaze layer 14 is firmly bonded to the insulator body 13 by melting and firing. Reference numeral 16 indicates a locally generated defect in the fired glaze layer 14. A method for repairing the defective portion 16 is to grind the inner surface of the defective portion 16 using a grinder or the like and shape it as shown in FIG. 1(b').
The defect portion 16 is cleaned with a solvent such as trichloroethane or benzine. After that, as shown in FIG. 1(C), unfired glaze 17 is added into the defective part 16 (1aL), and as shown in FIG. 1(d), laser R is irradiated from the nozzle 10 to melt it. The glaze 17 in the state is baked into the fired glaze layer 14 to solidify it. At this time, the boundary between the fired glaze layer 14 and the molten glaze 17 is heated to a high temperature, and the surface of the fired glaze layer 14, that is, the inner surface of the defective part 16, is also melted and the unfired glaze 1
As shown in FIG. 1(e), the defective portion 16 of the fired glaze layer 14 is completely repaired.

Note that since the laser R cannot fire the unfired glaze 17 at once, the nozzle 10 or the support base 11 is moved left and right to uniformly irradiate the entire surface.

Figure 2 shows the experimental results of multiple insulator surface treatments, with the horizontal axis representing the output of the ray 1fR (watts/cm'') and the vertical axis representing the irradiation time (seconds). According to the above, the area is divided into two areas: the case where the surface treatment has been successfully completed as shown by the circle mark, and the case where there are cracks as shown by the mark X. It is sufficient to irradiate the laser R under the conditions within the side region.

Note that the present invention can also be embodied in the following embodiments.

(1) In the above embodiment, a COx laser was used, but in addition to this, a He-Ne laser, an Ar ion laser, a metal vapor laser, etc., as shown in the following table, or a solid state laser, a semiconductor laser, etc. Type (2) Use of electromagnetic waves such as convex frequency waves capable of firing and bonding the glaze 17 to the fired glaze layer 14 in addition to a laser.

In addition, in the field of application of the present invention, in the case of very fine and small parts, firing them with a laser can be considered. A glaze is applied to the area, a laser is irradiated to only this area, and the area is fired and covered.

In the porcelain products obtained in this way, the thickness of the fired glaze layer can be changed arbitrarily depending on the pottery, compared to the method of firing in a furnace.

Effects of the Invention As detailed above, the present invention allows the insulator to be partially fired with glaze, so the required energy can be limited to a minimum, and the firing work can be performed easily and quickly. This has the effect of reducing product costs.

[Brief explanation of the drawing]

Figures 1 (a) to (e) are cross-sectional views for explaining the method of repairing a defect that occurs on a part of the insulator surface, Figure 2 is a graph showing the experimental results, and Figure 3 is a laser generator. It is a front view of a road body showing. DESCRIPTION OF SYMBOLS 10... Nozzle, 11... Support stand, 12... Insulator, 13... Insulator main body, 14... Fired glaze layer, 16
...Defected part, 17...Unfired glaze, R...Laser. Patent applicant: Agent of Nippon Insulator Co., Ltd.
Patent Attorney On 1) Hironobu Figure 1 Togu (e)

Claims (1)

[Scope of Claims] 1. A part of the fired glaze layer on the surface of the insulator is removed, the part is cleaned, an unfired glaze is applied, and the glaze is locally irradiated with electromagnetic waves such as a laser or high frequency. A method for surface treatment of an insulator, characterized in that the fired glaze layer is baked on the fired glaze layer. 2. The method for surface treatment of an insulator according to claim 1, wherein the entire glaze is uniformly irradiated with electromagnetic waves by moving the insulator or an electromagnetic wave irradiation nozzle.