JPS5838111A - Manufacture of ceramic sheet - 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 The present invention relates to a method for easily manufacturing ceramic thin plates and thin molded products thereof.

Ceramic has properties equivalent to wear resistance, corrosion resistance, and heat resistance, but in general manufacturing methods, it is heated at high temperatures (80℃) after forming.
Since it is sintered and solidified at a temperature of about 0 to 1800°C, there are problems such as changes in dimensions, generation of distortion, and breakage, and it has been difficult to create thin plates of about 11 or less or complex shapes of thin plates.

The present invention provides a method for easily manufacturing ceramic thin plates and molded products thereof.

That is, the present invention relates to a method for manufacturing a ceramic thin plate, which comprises forming an undercoat film on a base material, thermally spraying ceramic onto the film, and then dissolving the undercoat film with a solvent.

As the base material in the present invention, any material can be used as long as it is a material that can be thermally sprayed with ceramic, does not deform or burn due to the heat during the ceramic spraying, and is rigid enough to not be deformed by plus F treatment. Something like this is fine.

This base material is degreased and blasted with an alumina grid, chilled grid, etc. to make the surface uneven and at the same time activated.

After that, the base material is fixed in a position where it can be easily thermally sprayed so as not to be blown away by the flame pressure of thermal spraying, and it is heated to 80 to 100
Heat to ℃. This heating is performed in such a way that no oxide film is formed on the base material.

Next, a material that can be thermally sprayed in the form of a powder with a controlled particle size that is soluble in water or other solvents and that can be supplied in large quantities at low cost, such as water-soluble common salt, slings, borax, etc., is added as an underlayer. The coating material is sprayed onto the surface of the base material to a uniform thickness by flame powder spraying.

The thickness of the undercoat material at this time is [1, Q5111
jl, but when spraying ceramic to adjust the thin ceramic plate in the next process, the surface roughness of the undercoat material will be transferred directly to the ceramic sprayed surface, so adjust the surface of the undercoat material to Case 5 to prevent
It can be sprayed to a fighting level.

Thereafter, a desired ceramic material is sprayed to a desired thickness by flame spraying, plasma flame spraying, or the like. At this time, as mentioned above, the surface shape of the undercoat material is transferred as is to the ceramic sprayed surface, so if it is necessary to adjust the roughness of the transfer surface, the surface of the undercoat material may be polished by an appropriate method such as polishing. You can also adjust it.

After the above operations are completed, the undercoat material is dissolved by immersing it in warm water, etc., and a two-laminate thin plate can be manufactured.

Next, the method of the present invention will be specifically explained with reference to Examples.

Example 1 A mild steel plate of 500 x 100 XiOt was used as a base material, and its flatness and surface roughness were adjusted by grinding the ceramic sprayed surface. This was degreased and cleaned using Triclean steam cleaning, and then 5Kq/CT+12G using a suction blasting device.
The blasting process was carried out using an At203-based blasting material with a grain size of 80 at a suction pressure of .

On the other hand, common salt whose particle size was adjusted to approximately Φ240 was placed in a flame powder spraying machine, and oxygen and acetylene were adjusted so as to generate a flame. In addition, in order to improve the fluidity of the salt, drying was performed at 80° C. for 1 hour.

The above-mentioned blast-treated base material was fixed to a thermal spraying device that could be moved laterally and vertically and whose moving speed could be controlled, and preheated to 100° C. with a flame torch (oxygen, propane). This operation was performed immediately after the blast treatment, and the heating method was such that no oxide film was formed on the blasted surface using a flame torch.

After preheating, immediately apply the above salt to Q, 1 using a flame powder spraying machine.
A uniform thermal spray coating was applied to a thickness of 111 m. In order to apply the film uniformly, the flame powder spraying machine is fixed,
The substrate was moved both vertically and horizontally.

After that, in order to adjust the surface of the above-mentioned undercoating material, dry polishing is performed using a surface polishing machine, and it is fixed again to the above-mentioned mobile thermal spraying device, and the temperature of the base material, whose temperature has decreased during polishing, is raised to 100℃ again using a flame torch. After preheating, A40. Ceramic spray powder of 0.5
It was sprayed uniformly to a thickness of M.

After ceramic spraying, remove the base material and soak it in a tank of running water to dissolve the salt undercoat material.
A ceramic sprayed plate of 100×0.5tM was obtained.

Example 2 A mild steel round bar measuring 500 x 60 φ was used as a base material, degreased, cleaned and blasted in the same manner as in Example 1, and the round bar was attached to a jig capable of rotating. If the sprayed material adhered to both end faces of the base material, it would be difficult to remove the ceramic cylindrical thin plate in the final step, so glass fiber-containing tape was attached to both end faces as a masking jig.

After that, preheated to 100℃ in the same manner as in Example 1, and sprayed borax whose particle size was adjusted uniformly to a thickness of 0.5W.
The surface roughness of the outer periphery and the dimensions were adjusted dry using No. 0 paper and a rotating grindstone.

Next, using a plasma spraying machine, At20387%10T
ie, 15% mixed ceramic 0.811II11
Thickly sprayed.

“After ceramic spraying, immerse it in a tank of running water to dissolve the borax. Inner diameter 6.05 as, length 500 m1, thickness O
, am was obtained.

As detailed above, according to the method of the present invention, wear resistance,
Thin plates and molded products made from ceramic with excellent corrosion resistance, heat resistance, etc. can be easily produced.

The method of the present invention can be applied to the manufacture of devices having sliding surfaces that require wear resistance, corrosion resistance, etc., devices that require insulation, devices that require heat resistance, and the like.

Sub-agent: 1) Akira Sub-agent Ryo Hagi Hara -

Claims (1)

[Claims] A method for manufacturing a ceramic thin plate, comprising forming an undercoat film on a base material, thermally spraying a ceramic onto the film, and then dissolving the undercoat film with a solvent.