KR200267517Y1 - electron component ceramic roasting kiln furniture structure - Google Patents

Abstract

The present invention relates to the structure of electronic component ceramic firing tools, and in particular, as a kiln furniture used for firing electronic parts such as pellet cores and capacitors. It is a firing aid that prevents the deformation of the plastic product when it is put into an electric furnace and has the required electrical characteristic value. The yogurt used as described above is a box-shaped urineware (2) for each operation. It is required to repeat the process of putting on and off the floor, and the firing stand 2 has a short life due to the structural change that increases in size as the number of times of use of alumina or zirconia is increased. , The process automation is not possible because of the deformation of the plastic product caused by the height deviation of the pedestal inserted into the box-shaped yaw (1). The present invention manufactures the box-shaped yaw tool (1) and the firing support (2) integrally, thereby reducing fuel costs and costs due to the automation of the firing process during the firing of ceramic electronic components and the weight reduction of the yaw tool during firing. We propose a practical electronic component ceramic casting tool for the reduction.

Description

Electronic component ceramic roasting kiln furniture structure

The present invention relates to an electronic component ceramic urine tool structure, in particular to a kiln furniture used to fire electronic parts such as pellet core (ferrite core), condenser (condenser) to improve the efficiency during the firing operation, It is to enable automation to save costs and save energy.

The general yogurt is a firing aid that prevents the deformation of the plastic product and has the required electrical characteristics when the electronic component ceramics are put in an electric furnace and fired.

Conventional yogurt as shown in Figure 3, the box-shaped yogurt is intended to prevent the deformation of the product during firing, the firing support (2) covering the inner floor like a tile is fired for the purpose of preventing electrical properties and reaction of the fired product It is used on the contact surface of the product.

The yogurt used as described above requires a process of repeating the operation of putting the baking tray 2 into the bottom of the box-shaped yaw holder 1 every time, and the firing tray 2 is made of alumina, or Due to the structural change that increases in size as the number of zirconia products increases, the life span is shorter, and process automation is not possible because of poor shape deformation of the plastic product due to the height deviation of the pedestal inserted into the box shaped tool (1). There was no inconvenience.

As described above, the present invention manufactures electronic components such as pellet cores and capacitors by integrating the box shaped tools 1 and the plastic support 2 used in the firing process. This paper proposes a practical electronic component ceramic plastic tool for reducing fuel cost and cost due to automation of the firing process and weight reduction of the tool.

1 is a perspective view of a box-type yaw tool for a conventional electronic component ceramic firing

Figure 2 is a perspective view of the firing stand for use in the bottom of Figure 1

3 is a reference perspective view of a state of firing an electronic component ceramic by a conventional method;

Figure 4 is a perspective view showing the electronic component ceramic firing tool according to the present invention

5 is a cross-sectional perspective view taken along the line a-a of FIG.

Figure 6 is a box-shaped yawgi manufacturing process according to the present invention

※ Explanation of code for main part of drawing

1: box type kiln furniture

2: plastic base 3: ceramic electronic parts

4: alumina coating layer

In view of the above, the alumina or zirconia is coated on the inner surface of the box-type yaw tool 1 made of Mullite material to integrate the yo-hat and the pedestal, which are conventionally separated.

To this end, the alumina coating layer (4) baked at 1250--1550 ° C. by coating alumina (Alumina) with a thickness of 1.5-2.0 mm to the inner bottom and one side of the bottom of the box-shaped yaw tool 1 made of mullite material is It was formed.

Coating zirconia instead of alumina coated on the present box-shaped yaw tool 1 configured as described above has the same effect.

The manufacturing process of the box-shaped yogurt (1) according to the present invention constructed as described above is first prepared by coating the raw material to be coated, mixed in a mixer and aged for 24 hours, and then molded by friction press or hydraulic press, followed by natural drying for 12 hours and drying cabinet for 12 hours. After drying, after firing the box-shaped yodo (1), the zirconia or alumina raw material of 500 ~ several ㎛ particle size is mixed in each ratio by the particle size on the bottom and one side of the bottom and the mixed raw material is water, binder, antifoaming agent After dispersing well with organic additives such as thickeners and dispersants, make a coating solution and then use the spray gun to coat the bottom and one side of the box-type yogurt (1).

In another method, the coating liquid may be poured into the bottom of a certain amount of box-shaped yaw tool 1 so as to evenly flow on the bottom and one side of the bottom to form a coating layer.

When coated in this way, the resultant is dried for 12 hours in a drying room and then fired at 1250-1550 ° C., and then the final product is extracted by visual inspection such as warping or cracking.

The box-shaped yogurt manufactured as described above is used as a ceramic-casting yogurt for electronic components while loading ceramic electronic components on the inner floor and passing through a tunnel electric furnace (not shown).

For reference, the components and particle size of the alumina coating solution according to the present invention

Calcined alumina 15-25%, fused alumina particle size 0.5-0.2mm 25-35%, particle size 0.2-0.075mm 35-45%, particle size 0.075-0.045mm 5-15%, particle size 0.045- 0 mm 5-15%, kaolin 0.5-5%, water 20-30%, siemci (CMC) 1% solution 10-25%, PVA 10% solution 1-5%, peptizing agent 0.15-0.5%, anti-foaming agent 0.05-0.2% of the mixed solution was used, the composition and particle size of another coating solution, Zirconia coating solution, fused zirconia particle size 0.5-0.15㎜ 10-20%, particle size 0.15- 0.075 mm 45-75%, particle size 0.075-0.045 mm 10-20%, particle size 0.045-0 mm 10-20%, water 10-20%, CMC 1% solution 10-25%, FV PVA) 10% solution 0.5-3%, peptizer 0.05%, defoamer 0.05-0.2% of the mixture is used.

According to the structure of the electronic component ceramic firing tool of the present invention configured as described above, the electronic component ceramic firing tool, which is divided into a mullite box shaped tool (1) and alumina or zirconia firing support (2) This is a practical tool for ceramic component ceramics that reduces fuel costs and costs by automating the sintering process during the firing of ceramic electronic parts and reducing the weight of the tools required for sintering, and is useful for improving the yield and quality of electronic parts ceramics. It is an idea.

Claims (2)

The alumina coating layer 4 is formed by coating alumina with a thickness of 1.5 to 2.0 mm to the inner bottom and one side of the bottom of the mullite box shaped yogurt 1 and baking it at 1250-1550 ° C. Electronic component ceramic firing tool structure. The electronic component ceramic firing tool structure according to claim 1, wherein zirconia is used as the coating material in addition to the alumina coating material.