CN212924414U

CN212924414U - Reduce warping mould of PBN panel

Info

Publication number: CN212924414U
Application number: CN202021214395.2U
Authority: CN
Inventors: 刘汝强; 王殿春; 胡晓静; 吴思华; 周清波
Original assignee: Shandong Guojing New Material Co ltd
Current assignee: Shandong Guojing New Material Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-04-09
Anticipated expiration: 2030-06-28

Abstract

The utility model relates to a reduce warping mould of PBN panel belongs to chemical vapor deposition technical field, and the mould includes the main part, and the main part is the cylinder of graphite preparation, encircles on the main part side and sets up the continuous recess of round. The utility model discloses a set up the recess on the mould, stress concentration factor when increasing production PBN panel consciously makes the inside stress concentration of panel can alleviate to reduce the panel warpage.

Description

Reduce warping mould of PBN panel

Technical Field

The utility model relates to a reduce warping mould of PBN panel belongs to chemical vapor deposition technical field.

Background

At present, products such as insulating sheets, insulating rings and the like prepared by pyrolytic boron nitride are mostly obtained by cutting PBN plates, so that the warping of the plates is highly required, if the warping of the plates is large, the processing process has great difficulty, and the warping of the processed products is also large and cannot be used, so that the utilization rate of the whole PBN plates is low. Therefore, reducing the warpage of the PBN sheet is an effective way to improve the product quality and the utilization rate of the whole PBN sheet, and the PBN sheet is obtained by forming the PBN sheet on the surface of a graphite mold by a chemical vapor deposition method and then demolding the graphite mold.

Disclosure of Invention

Not enough to prior art, the utility model provides a reduce warping mould of PBN panel through set up the recess on the mould, reduces the warpage of PBN panel.

The technical scheme of the utility model as follows:

the utility model provides a reduce crooked mould of PBN panel, includes the main part, and the main part is the cylinder of graphite preparation, encircles on the main part side and sets up the continuous recess of round.

Preferably, the groove is formed at a middle position of the side surface of the main body, and the groove is spaced from the upper bottom surface and the lower bottom surface of the main body by the same distance.

Preferably, the body has a diameter of 10-800mm and a height of 1-100 mm.

Preferably, the grooves have a depth of 0.1 to 50mm and a width of 0.1 to 80 mm.

In the production process, the PBN deposits on the surface of the main body, the PBN on the surface of the main body is the PBN plate which is needed by people, after a product is discharged from a furnace, the PBN plate and the main body are separated to obtain the complete PBN plate, the main body is provided with a groove, the stress concentration factor in the process of producing the PBN plate is increased consciously, the stress concentration in the plate is relaxed, when the side surface of a die is not provided with the groove, the inside and the edge part of the plate can generate great stress, and when the stress is released nowhere, the plate can be raised or sunken, and great warping is generated. After the grooves are added on the side faces, new stress concentration factors are added, discontinuity of boundary conditions is improved, stress concentration is relieved, and accordingly warping of the plate is reduced.

The beneficial effects of the utility model reside in that:

1. the utility model discloses a set up the recess on the mould, stress concentration factor when increasing production PBN panel consciously makes the inside stress concentration of panel can alleviate to reduce the panel warpage.

2. The utility model discloses can improve on current mould, be applied to production fast.

Drawings

Fig. 1 is a schematic structural view of the present invention;

wherein: 1. a main body; 2. and (4) a groove.

Detailed Description

The present invention will be further described, but not limited to, by the following examples in conjunction with the accompanying drawings.

Example 1:

as shown in fig. 1, the present embodiment provides a mold for reducing warpage of a PBN plate, which includes a main body 1, wherein the main body 1 is a cylinder made of graphite, a circle of continuous grooves 2 is circumferentially arranged on a side surface of the main body 1, the grooves 2 are arranged at an intermediate position of the side surface of the main body, distances between the grooves 2 and an upper bottom surface and a lower bottom surface of the main body 1 are the same, a diameter of the main body is 10mm, a height of the main body is 1mm, a depth of the grooves is 0.1mm, and a width of the grooves is 0.1.

Example 2:

a mould for reducing the warping of a PBN plate is structurally as described in embodiment 1, except that a main body 1 is 800mm in diameter, 100mm in height, 50mm in depth and 80mm in width, and grooves 2 are formed in the main body.

Claims

1. The utility model provides a reduce mould of PBN panel warpage which characterized in that, includes the main part, and the main part is the cylinder of graphite preparation, encircles on the main part side and sets up the continuous recess of round.

2. The mold for reducing warpage of a PBN sheet according to claim 1, wherein the groove is disposed at a middle position of the side surface of the main body, and the groove is spaced from the upper bottom surface and the lower bottom surface of the main body by the same distance.

3. The mold for reducing warpage of a PBN board as claimed in claim 1, wherein the main body has a diameter of 10-800mm and a height of 1-100 mm.

4. The mold for reducing the warpage of a PBN sheet according to claim 1, wherein the grooves have a depth of 0.1 to 50mm and a width of 0.1 to 80 mm.