Breathable support for ceramic metallization sintering

Abstract

The utility model belongs to the technical field of ceramic metallization equipment, and discloses a ventilation type support for ceramic metallization sintering, which comprises a hollow circular truncated cone structure and square holes, the hollow circular truncated cone structure is provided with a plurality of square holes which are uniformly distributed along the axis of the hollow circular truncated cone structure, and the square holes are communicated with the hollow circular truncated cone structure. The square holes are formed, so that the concentrations of hydrogen and nitrogen inside and outside the product tend to be consistent after the product is loaded, and meanwhile, the hydrogen and the nitrogen in the height direction of the product circulate mutually, so that the phenomena that the hydrogen and the nitrogen at the lower end, the upper end, the inner layer and the outer layer of the product are layered, and a metallized layer is blackened and oxidized after the ceramic metallized product is sintered are avoided; and the uniformity of the temperature in the ceramic metallization sintering process is ensured, and the stability of hydrogen and nitrogen atmospheres and the quality stability of a ceramic metallization product are also ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of ceramic metallization equipment, and in particular relates to a breathable ceramic metallization sintering bracket. Background Art

[0002] The breathable ceramic metallization sintering bracket is used to support the loading of products when the ceramic metallization series products are sintered in a hydrogen and nitrogen atmosphere. At present, ceramic or molybdenum brackets with vertebral structures are used by domestic and foreign ceramic metallization manufacturers. With the increase of loading capacity, it is required that the products can be loaded with both sleeve firing and belt firing during the metallization sintering process. However, with the increase of loading density of ceramic metallization products, this conical bracket is not conducive to air permeability, and hydrogen stratification occurs during the metallization sintering process, resulting in unqualified oxidation characteristics of the metallization surface of the product after metallization sintering. In order to solve the problem of hydrogen stratification caused by high loading density during the metallization sintering process and improve the qualified rate of the sintering process of ceramic metallization products, it is necessary to develop a breathable ceramic metallization sintering bracket. Summary of the invention

[0003] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a breathable ceramic metallization sintering bracket, which can solve the problem of hydrogen stratification caused by high loading density during metallization sintering and improve the qualified rate of ceramic metallization product sintering process.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a breathable ceramic metallization sintering bracket, comprising a hollow frustum body structure, a plurality of square holes are opened on the hollow frustum body structure, and the plurality of square holes are evenly distributed along the axis of the hollow frustum body structure.

[0006] A further improvement of the utility model is that the inclination angle of the hollow frustum structure is 20-75°.

[0007] The utility model is further improved in that the hollow truncated cone structure adopts 95% Al 2 O 3 ceramics.

[0008] A further improvement of the utility model is that the wall thickness of the hollow frustum structure is 4-10 mm.

[0009] A further improvement of the utility model is that the height of the hollow frustum body structure is 25-75 mm.

[0010] A further improvement of the utility model is that the bottom radius of the hollow frustum structure is 40-150 mm.

[0011] A further improvement of the utility model is that the length of the square hole is 10-50 mm.

[0012] A further improvement of the utility model is that the height of the square hole is half of the hollow frustum structure.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model opens a plurality of square holes on the hollow truncated cone structure, and the plurality of square holes are evenly distributed along the axis of the hollow truncated cone structure, so as to achieve a ventilation effect. The utility model has a simple structure, is easy to process, is convenient in the process of loading products, and effectively enables the hydrogen and nitrogen gases of the inner and outer truncated cone structures to circulate with each other, thereby avoiding the stability of hydrogen and nitrogen in the sintering process after high-density loading of ceramic metallized products, and avoiding the oxidation phenomenon of the metallized layer of the product caused by hydrogen stratification after high-density loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the breathable ceramic metallization sintering bracket of the utility model;

[0016] Figure 2 This is a 3D schematic diagram of the breathable ceramic metallization sintering bracket of the present invention.

[0017] Among them, 1. Hollow frustum structure; 2. Square hole. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but it should not be understood that the above subject matter of the present invention is limited to the following embodiments. Without departing from the above technical ideas of the present invention, various substitutions and changes are made according to common technical knowledge and conventional means in the field, which should all be included in the protection scope of the present invention.

[0019] See also Figure 1 and Figure 2 The permeable ceramic metallization sintering bracket comprises a hollow truncated cone structure 1 and a square hole 2. The hollow truncated cone structure 1 is provided with a plurality of square holes 2, which are evenly distributed along the axis of the hollow truncated cone structure 1. The hollow truncated cone structure 1 is made of 95% Al 2 O 3Ceramic, the inclination angle of the hollow frustum cone structure 1 is 20-75°, the wall thickness is 4-10mm, the height is 25-75mm, the bottom radius of the hollow frustum cone structure 1 is 40-150mm, the length of the square hole 2 is 10-50mm, and the height is half of the hollow frustum cone structure 1. The square hole 2 can make the hydrogen and nitrogen concentrations inside and outside the product tend to be consistent after the product is loaded, and at the same time, the hydrogen and nitrogen in the height direction of the product can circulate with each other, avoiding the stratification of hydrogen and nitrogen at the lower end, upper end and inner and outer layers of the product, which causes the metallization layer of the ceramic metallized product to become black and oxidized after sintering.

[0020] Embodiment 1:

[0021] In this embodiment, the wall thickness A of the hollow frustum cone structure 1 is 4 mm, the height H is 25 mm, the inclination angle B is 20°, and the bottom radius RF is 40 mm. It can load ceramic metallized sintered products with a radius less than 40 mm. A square hole 2 with a length D of 10 mm and a height E of 12.5 mm is opened at the bottom of the hollow frustum cone structure 1. The number of the square holes 2 is 4, and the 4 square holes 2 are evenly distributed along the axis of the hollow frustum cone structure 1, wherein the length D and height E of the square hole 2 can be adjusted according to products of different diameters.

[0022] Embodiment 2:

[0023] In this embodiment, the wall thickness A of the hollow frustum cone structure 1 is 10 mm, the height H is 75 mm, the inclination angle B is 75°, and the bottom radius RF is 150 mm. It can load ceramic metallized sintered products with a radius less than 150 mm. A square hole 2 with a length D of 50 mm and a height E of 35.5 mm is opened at the bottom of the hollow frustum cone structure 1. The number of the square holes 2 is 4, and the 4 square holes 2 are evenly distributed along the axis of the hollow frustum cone structure 1, wherein the length D and height E of the square hole 2 can be adjusted according to products of different diameters.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field can still modify or replace the specific implementation methods of the present invention. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the claims of the present invention to be approved.

Claims

1. A breathable ceramic metallization sintering bracket, characterized in that: It comprises a hollow frustum body structure (1), a plurality of square holes (2) are opened on the hollow frustum body structure (1), and the plurality of square holes (2) are evenly distributed along the axis of the hollow frustum body structure (1); The hollow truncated cone structure (1) has an inclination angle of 20-75° and a wall thickness of 4-10 mm; The hollow truncated cone structure (1) is made of 95% Al2O3 ceramic.

2. A breathable ceramic metallization sintering bracket according to claim 1, characterized in that: The height of the hollow truncated cone structure (1) is 25-75 mm.

3. The breathable ceramic metallization sintering bracket according to claim 1, characterized in that: The bottom radius of the hollow truncated cone structure (1) is 40-150 mm.

4. The breathable ceramic metallization sintering bracket according to claim 1, characterized in that: The length of the square hole (2) is 10-50 mm.

5. The breathable ceramic metallization sintering bracket according to claim 1, characterized in that: The height of the square hole (2) is half that of the hollow frustum structure (1).

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