CN218741835U

CN218741835U - Composite pyrophyllite block

Info

Publication number: CN218741835U
Application number: CN202221662329.0U
Authority: CN
Inventors: 花波波; 陈强; 王恒
Original assignee: Zhengzhou Haocheng Superhard Tool Co ltd
Current assignee: Zhengzhou Haocheng Superhard Tool Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2023-03-28
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses a composite pyrophyllite block, which comprises a hollow pyrophyllite frame and an annular lining body structure with columnar through holes; the annular lining body structure is embedded on the inner wall of the pyrophyllite frame; the inner side of the annular lining body structure and the inner walls of the pyrophyllite frames at the two ends of the annular lining body structure form cylindrical through holes; the two ends of the annular lining body structure are thick, the middle of the annular lining body structure is thin, and the outer side surface of the annular lining body structure is of a hyperboloid structure. The utility model discloses an optimize the inner structure of pyrophyllite piece, solved the problem of temperature field and pressure field homogeneity in the synthetic middle cavity of superhard materials to a certain extent, and then can improve the synthetic output of single and the quality of superhard materials.

Description

Composite pyrophyllite block

Technical Field

The utility model relates to a superhard materials high pressure synthesis technology field, concretely relates to compound pyrophyllite piece.

Background

The pyrophyllite block is an indispensable raw and auxiliary material in the process of synthesizing the superhard material at high temperature and high pressure, has high pressure transmission efficiency, and also plays roles in pressure transmission, sealing, heat preservation and insulation in synthesis. Since the temperature and pressure required in the synthesis of superhard material are achieved by conduction and transmission, pressure and temperature gradients inevitably exist in the synthesis chamber.

And the pyrophyllite is subjected to structural phase change by removing crystal water existing inside the pyrophyllite at high temperature and high pressure, so that the pressure transmission performance of the pyrophyllite is reduced, the pressure loss is increased, and the heat preservation performance is deteriorated. In order to keep the stability of the temperature field and the pressure field inside the cavity, usually, a columnar dolomite ring is used as an auxiliary material at a position where the pyrophyllite inside the cavity is easy to change phase to make up for the loss of pressure and temperature in high-temperature high-pressure synthesis, but in the high-temperature high-pressure synthesis of the traditional pyrophyllite structure, the temperature field distribution in the cavity is high at the center and low at the two ends, and the pressure field distribution is high at the two ends and low at the center. How to ensure the uniformity of the temperature field and the pressure field in the synthetic cavity becomes an urgent problem to be solved in the industry.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a composite pyrophyllite block, which has solved the problem of non-uniformity of temperature field and pressure field in the cavity during synthesis of superhard material to a certain extent by optimizing the internal structure of the pyrophyllite block, thereby improving the single synthesis yield and quality of superhard material.

Based on above purpose, the utility model discloses a compound pyrophyllite piece adopts following technical scheme:

a composite pyrophyllite block comprises a pyrophyllite frame with a hollow interior and an annular lining body structure with columnar through holes; the annular lining body structure is embedded on the inner wall of the pyrophyllite frame; the inner side of the annular lining body structure and the inner walls of the pyrophyllite frames at the two ends of the annular lining body structure form cylindrical through holes; the two ends of the annular lining body structure are thick, the middle of the annular lining body structure is thin, and the outer side surface of the annular lining body structure is of a hyperboloid structure.

The height of the annular lining body structure is smaller than that of the pyrophyllite frame, and the pyrophyllite frame exceeds the inner walls of the two ends of the annular lining body structure and forms a cylindrical through hole with the inner side of the annular lining body structure.

In the hyperboloid structure of the annular liner structure, the diameter ratio of the end part to the waist part is (1.1-2): 1.

The material of the annular liner body structure comprises a main material and an auxiliary material; the main material is dolomite, and the auxiliary material is one or more of sodium chloride, graphite, zirconia and magnesia.

The utility model has the advantages that:

through optimizing the inner structure of pyrophyllite block, optimize traditional column inside lining structure into the double-curved surface structure, solved the inhomogeneous problem in temperature field and the pressure field in the synthetic cavity to a certain extent to can improve superhard materials's single synthetic output and quality. The composite pyrophyllite block has good heat preservation effect, can greatly reduce the synthesis power and the synthesis pressure, saves the electric energy consumption, and simultaneously prolongs the service life of the press.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

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

FIG. 2 is a schematic diagram of the lining structure of a composite pyrophyllite block of the present invention;

wherein: 1. a pyrophyllite framework; 2. a liner structure; 11. a through hole; a. the diameter of the opening; b. the diameter of the waist.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

A composite pyrophyllite block is shown in figures 1-2, and is of a cubic structure, and is formed by compounding a pyrophyllite frame 1 and a lining body structure 2; the outer layer of the composite pyrophyllite block is a pyrophyllite frame 1 made of pyrophyllite; the inner layer of the composite pyrophyllite block is a lining body structure 2, the lining body structure 2 is an annular structure with the axis vertically arranged, the lining body structure 2 is embedded in the pyrophyllite frame 1, and the central axes of the lining body structure 2 and the pyrophyllite frame 1 are the same; the lining body structure 2 is hollow and cylindrical, the cylinders penetrate through the upper side and the lower side of the lining body structure 2, and the central axis of each cylinder is vertical and is superposed with the vertical central axis of the pyrophyllite frame 1; the upper end and the lower end of the lining body structure 2 are thick (namely the diameter a close to the openings at the two ends of the cylinder is large), the middle waist part is thin (namely the diameter b of the waist part is small), and the outer side surface is of a double-curved-surface structure; the ratio of the diameter a of the opening at the two ends of the lining body structure 2 to the diameter b of the waist part is (1.1-2) to 1, preferably 1.5; the height of lining body structure 2 is less than pyrophyllite frame 1, and the center of the pyrophyllite frame 1 part at the cylinder both ends also is the hollow circular cylinder that runs through, and the hollow circular cylinder of pyrophyllite frame 1 is located the both ends of the cylinder of lining body structure 2, and the diameter of hollow circular cylinder and cylinder equals and the edge coincidence, and hollow circular cylinder and cylinder form columniform through-hole 11 jointly, and through-hole 11 runs through the upper and lower both sides of compound pyrophyllite piece.

The material of the lining body structure 2 comprises a main material and an auxiliary material; the main material is dolomite, and the auxiliary material is one or more of sodium chloride, graphite, zirconia and magnesia; for example, the material of the lining structure 2 is dolomite + sodium chloride + graphite; the material of the lining body structure 2 can also be dolomite, zirconia and magnesia; the material of the lining structure 2 can also consist of dolomite and graphite.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A composite pyrophyllite block is characterized by comprising a pyrophyllite frame with a hollow interior and an annular lining body structure with columnar through holes; the annular lining body structure is embedded on the inner wall of the pyrophyllite frame; the inner side of the annular lining body structure and the inner walls of the pyrophyllite frames at the two ends of the annular lining body structure form cylindrical through holes; the two ends of the annular lining body structure are thick, the middle of the annular lining body structure is thin, and the outer side surface of the annular lining body structure is of a hyperboloid structure.

2. The composite pyrophyllite block of claim 1, wherein the height of the annular liner structure is smaller than that of the pyrophyllite frame, and cylindrical through holes are formed between inner walls of the pyrophyllite frame, which exceed two ends of the annular liner structure, and the inner sides of the annular liner structure.

3. The composite pyrophyllite block of claim 1, wherein the diameter ratio of the diameter of the end part to the diameter of the waist part in the hyperboloid structure of the annular lining body structure is (1.1-2): 1.