JPS61286276A - Manufacture of ceramic part - 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 [Field of Industrial Application] The present invention relates to a method for manufacturing ceramic parts.

[Conventional technology]

Various ceramic parts have conventionally been generally manufactured through the following steps. That is, the ceramic powder, firing aid or molding binder, additives, water, etc. are weighed and then mixed, and this mixed raw material is uniformly mixed and dispersed in the mixing process and then supplied to the molding process. Ru. Press molding, extrusion molding, casting molding, etc. are generally known as molding methods, but among these, for example, in the press molding process, it is especially desirable to place the kneaded ceramic raw materials in a Venus and pressurize them. The parts thus formed are placed in an electric furnace or the like and fired to harden them. The fired product is often used as it is as a component, but if dimensional accuracy is required, it is processed by polishing or the like before being used.

[Problem that the invention seeks to solve]

In this way, in conventional manufacturing methods for ceramic parts, processes such as polishing are required when dimensional accuracy is required, so if there are many parts to be processed such as hole drilling or flat processing, the manufacturing cost will increase. The problem was that it was extremely expensive.

The present invention was made in view of the above points, and an object of the present invention is to provide a method for manufacturing ceramic parts that makes it possible to manufacture ceramic parts with high dimensional accuracy at low cost.

[Means for solving problems]

In order to achieve such an object, in the present invention, the key parts of the oxide-based ceramic thin plate material are processed using a laser processing machine,
This processed thin plate material is made into a thick plate by applying glass powder to the overlapping surfaces and stacking multiple sheets.
This was further fired.

[Effect]

In this way, the thin plates i, which have been easily processed with a laser processing machine, are stacked and re-fired to melt the glass powder on the stacked surfaces and form a firmly bonded thick plate. It becomes a ceramic part.

〔Example〕

1 and 2 are a plan view and a side view of a completed part shown for explaining the method of manufacturing a ceramic part according to the present invention. This example shows an example of stacking 8 thin plates of 12mm thickness to obtain a thick plate of 10m+w thickness.
The manufacturing method will be explained below. First, an alumina ceramic thin plate having a thickness of 1.2 mm (for example, by a normal manufacturing method) is manufactured, and this is cut using a carbon dioxide laser processing machine using, for example, N2 gas as an auxiliary gas to form a 110 mm×
Eight 110 mm square thin plates 1 are manufactured. Then, while positioning each of these thin plates 10 at predetermined locations using a jig or the like, two holes 2 each having a diameter of 20 mm, for example, are bored using the laser processing machine. The machining dimensional accuracy at this time is about 0.1 mm. Then, these eight thin plates 1 are stacked and bonded, but before stacking, glass powder is applied to the stacked surfaces. That is, 7 thin plates 1 out of 8
Glass powder for alumina sealing is applied to one side of the glass to a predetermined thickness. In this example, the coating thickness is 10 mm-1.
Since the -2 thickness X8 = 0.4 mm is shared by seven sheets, the thickness is 0.06 mm out of 0.4 mm. The coating method is a conventional method such as screen printing. Note that the above is a case of single-sided coating, but in the case of double-sided coating, '' is applied to one side of two thin plates 10 and both sides of six thin plates 10.
Apply glass powder with a thickness of f0.03 mm. 8 after application
Layer two thin plates 1 and make holes 2 with a diameter of 20 mm and a diameter of 15 mm.
0 firing involves inserting and positioning a bottle of the same length and then placing it in a firing furnace for firing.
If it is held for about a minute and then slowly cooled and taken out, there will be no shrinkage due to firing. Through this firing, the glass powder is melted, and the thin plate 1 is hardened and solidified into a shape 10 shown by reference numeral 3 in the figure.
A ceramic slab with a thickness of mm is obtained.

Currently, drilling and cutting by laser processing can only be done easily up to a thickness of about 15 mm, and if the ceramic is a non-oxide ceramic, the glass is reduced during firing and sealed. Since it is difficult to adhere, it is limited to oxide-based ceramics.

Although this example shows an example in which a circular hole is bored in a rectangular plate material, the shape is not limited to a rectangular one, but may be a circular plate or other shapes. You can also do this. Furthermore, although alumina ceramic is used as an example of the oxide ceramic in this embodiment, glass sealing is also possible with other oxide ceramics.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, as a method for manufacturing ceramic parts, the main part of an oxide-based ceramic thin plate material is processed with a laser processing machine, and the processed thin plate material is , a method is adopted in which a thick plate material is formed by applying glass powder to the stacked surfaces and stacking multiple sheets, and then this is further fired to melt the glass powder and firmly bond and fix the stacked surfaces. ], it is possible to manufacture ceramic parts with high dimensional accuracy without the need for polishing, etc., so processing costs are reduced, and
Since a highly versatile thin plate is used as the ceramic material, inventory management is easy and costs are reduced.

Furthermore, since glass is used for bonding, the manufactured ceramic parts can be used at high temperatures and have improved heat resistance.

[Brief explanation of drawings]

FIG. 1 is a plan view of a completed part shown for explaining the method of manufacturing a ceramic part according to the present invention, and FIG. 2 is a side view thereof. 1... Thin plate, 2... Hole, 3... Ceramic thick plate.

Claims (1)

[Claims] A laser processing machine is used to process the important parts of a thin plate made of oxide ceramic, and the processed multiple thin plates are
Production of ceramic parts characterized by applying glass powder to overlapping surfaces and overlapping them to form a thick plate material, and then further firing the thick plate material to melt the glass powder and joining the overlapping surfaces. Method.