Pressureless sintering mold

Abstract

The utility model discloses a pressureless sintering mould which comprises a mould body, an upper cushion block and a lower cushion block, mould cavities are arranged on the mould body in a matrix shape, each mould cavity corresponds to a station, the lower cushion block, a sample and the upper cushion block are sequentially arranged in each station from bottom to top, and the lower cushion block, the sample and the upper cushion block are arranged on the mould body. The lower cushion block, the die cavity, the upper cushion block and a sample are the same in shape and size. The pressureless sintering mold disclosed by the utility model can sinter a plurality of samples at one time, has a fixing and forming effect on the samples through the upper and lower cushion blocks, and improves the qualification rate of the samples.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and particularly relates to a pressureless sintering mold. Background Art

[0002] Patent CN117512376A, a method for preparing diamond particle reinforced metal matrix composite by pressureless sintering, proposes a method for preparing diamond particle reinforced metal matrix composite. By subjecting diamond to surface metallization treatment, a diamond-carbide-metal multi-layer interfacial layer structure is formed to promote the densification of the heterogeneous interface. At the same time, alloying elements that can form a low-melting-point alloy phase with the matrix are added to the matrix metal powder, and powder granulation is carried out to form a core-shell structure, so that a low-melting-point alloy phase is locally formed on the surface of the powder at the sintering temperature, promoting the densification of the metal matrix powder. Content of the Utility Model

[0003] In order to better implement the above method for preparing pressureless sintered materials, the utility model provides a pressureless sintering mold, which includes a mold body, an upper cushion block and a lower cushion block. A mold cavity is formed on the mold body, and the mold cavities are arranged in a matrix shape on the mold body.

[0004] Preferably: Each mold cavity corresponds to a working station, and a lower cushion block, a sample and an upper cushion block are sequentially loaded into each working station from bottom to top.

[0005] Preferably: The upper cushion block is located above the sample, and the shape of the upper cushion block is adapted to the shape of the mold cavity.

[0006] Preferably: The size of the upper cushion block is the same as the size of the sample.

[0007] Preferably: The lower end surface of the upper cushion block is attached to the upper end surface of the sample.

[0008] Preferably: The lower cushion block is located below the sample, and the shape of the lower cushion block is adapted to the shape of the mold cavity.

[0009] Preferably: The upper end surface of the lower cushion block is attached to the lower end surface of the sample.

[0010] Technical Effects and Advantages of the Utility Model

[0011] In the utility model, through the cooperation of the mold body and the upper and lower cushion blocks, the sample has a fixed forming effect, which is beneficial to the pressureless sintering near the liquid phase and improves the qualified rate of the sample. Multiple working stations are arranged in a matrix on one mold, and multiple samples can be sintered at one time, improving the efficiency. Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of the pressureless sintering mold provided by the embodiment of the present application Figure 1 ;

[0013] Figure 2 It is a schematic structure of the pressureless sintering die provided by the embodiment of the present application Figure 2 ;

[0014] Figure 3 It is a schematic structural diagram of the die body in the pressureless sintering die provided by the embodiment of the present application

[0015] In the figure: 1. Die body; 11. Mold cavity; 12. Sample; 2. Upper cushion block; 3. Lower cushion block Specific embodiments

[0016] The following further describes the present utility model in detail with reference to the drawings and specific embodiments. The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes

[0017] Please refer to Figures 1 - 3 , in this embodiment, a pressureless sintering die is provided, including a die body 1. A mold cavity 11 is formed on the die body 1. The mold cavities 11 are arranged in a matrix shape on the die body 1. The shape of the mold cavity 11 can be rectangular, circular, oval, polygonal or irregular, and is the same as the shape of the sample 12 required for actual processing

[0018] Furthermore, the mold cavity 11 is used to place the powder compact sample 12

[0019] Furthermore, it further includes an upper cushion block 2 and a lower cushion block 3. The upper cushion block 2 is located above the sample 12. The shape of the upper cushion block 2 is adapted to the shape of the mold cavity 11, and the size of the upper cushion block 2 is the same as the size of the sample 12. The upper cushion block 2, the die body 1 and the lower cushion block 3 are arranged axially, and the edges of the upper cushion block 2, the sample 12 and the lower cushion block 3 are aligned

[0020] Furthermore, the lower cushion block 3 is located below the sample 12. The shape of the lower cushion block 3 is adapted to the shape of the mold cavity 11, and the size of the lower cushion block 3 is the same as the size of the sample 12

[0021] At the sintering temperature, a low-melting-point alloy phase is locally formed on the surface of the metal powder to promote densification. The upper cushion block 2 prevents the sample 12 from deforming due to the instantaneous liquid phase generated under its own gravity

[0022] The working principle of the present utility model is

[0023] By means of the cooperation of the mold body 1 with the upper cushion block 2 and the lower cushion block 3, it has a fixing and forming effect on the sample 12, which is beneficial to the pressureless sintering near the liquid phase and improves the qualification rate of the sample 12. A plurality of stations are arranged in a matrix on a mold, and a plurality of samples 12 can be sintered at one time, improving the efficiency.

[0024] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. A pressureless sintering mold, characterized in that: The mold body (1) comprises a mold body (1), an upper pad (2) and a lower pad (3); the mold body (1) is provided with a mold cavity (11); the mold cavity (11) is arranged in a matrix shape on the mold body (1).

2. A pressureless sintering mold according to claim 1, characterized in that: Each of the mold cavities (11) corresponds to a work station, and each of the work stations is loaded with a lower cushion block (3), a sample (12) and an upper cushion block (2) in sequence from bottom to top.

3. The pressureless sintering mold according to claim 1, characterized in that: The size of the upper pad (2) matches the mold cavity.

4. A pressureless sintering mold according to claim 3, characterized in that: The size of the upper pad (2) is the same as the size of the sample (12).

5. The pressureless sintering mold according to claim 4, characterized in that: The lower end surface of the upper pad (2) is fitted onto the upper end surface of the sample (12).

6. The pressureless sintering mold according to claim 1, characterized in that: The lower pad (3) is located below the sample (12), and the shape of the lower pad (3) is compatible with the shape of the mold cavity (11).

7. The pressureless sintering mold according to claim 6, characterized in that: The upper end surface of the lower pad (3) is attached to the lower end surface of the sample (12).

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