Hot inlaying device

Abstract

The utility model provides a hot inlaying device. The hot inlaying device comprises a mold assembly and a demolding assembly, the die assembly comprises a male die and a female die provided with a stepped through hole, and the stepped through hole is composed of a die cavity part and a forming cavity part which are coaxially communicated. The inner wall of the die cavity part is in clearance fit with the male die; the radial size of the forming cavity part is larger than that of the die cavity part for accommodating inlay materials; the demolding assembly comprises a limiting cylinder and a demolding rod which are coaxially arranged in a sleeved mode. The limiting cylinder is provided with a matching cavity part in clearance fit with the outer wall of the female die; the lower portion of the limiting cylinder is provided with a demolding cavity with the radial size larger than that of the forming cavity. The male die is used for compacting the inlay material in the forming cavity part; the demolding rod is in clearance fit with the mold cavity part and used for pushing the male mold to guide the embedded sample into the demolding cavity part. The device can be used for inlaying samples with different sizes and shapes, especially inlaying small-size samples, and can meet the requirement that the small-size samples need to be placed in tests such as electron backscatter diffraction. The use amount of mounting powder can be effectively reduced, and the experiment cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of hot-mounting molds, specifically a hot-mounting device. Background Technology

[0002] In materials science, sample preparation is a crucial step in microstructure analysis. Thermal mounting, a commonly used technique in metallographic, scanning electron microscopy (SEM), and electron backscattering diffraction (ESD) sample preparation, is primarily used to embed metal samples that are difficult to polish by hand into mounting materials for better polishing and microstructural observation. However, existing metallographic thermal mounting machines produce samples with fixed diameters, making it impossible to adjust their size and shape. In ESD testing, due to space limitations in the sample chamber, larger samples can easily damage the probe; therefore, the size of existing mounted samples often fails to meet testing requirements, necessitating the development of thermal mounting techniques with adjustable size and shape. On the other hand, for smaller samples, existing mounting methods result in excessively large mounted samples, leading to wasted mounting powder and increased experimental costs. Utility Model Content

[0003] To achieve adjustable size and shape of hot-mounted specimens, this invention provides a hot-mounting device that is low in cost, simple in design principle, and easy to manufacture.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is to provide a hot-mounting device, including a mold assembly and a demolding assembly;

[0005] The mold assembly includes a punch and a die with a stepped through hole, the stepped through hole being formed by a mold cavity and a forming cavity that are coaxially connected; the inner wall of the mold cavity is clearance-fitted with the punch; the radial dimension of the forming cavity is larger than that of the mold cavity to accommodate the insert material;

[0006] The demolding assembly includes a coaxially sleeved limiting cylinder and a demolding rod; the limiting cylinder is provided with a mating cavity that is clearance-fitted with the outer wall of the die; the lower part of the limiting cylinder is provided with a demolding cavity with a radial dimension larger than that of the forming cavity; the punch is used to press the inlaid material into the forming cavity; the demolding rod is clearance-fitted with the die cavity and is used to push the punch to guide the inlaid sample into the demolding cavity.

[0007] In some possible embodiments, both the demolding rod and the punch are configured as solid rod structures.

[0008] In some possible embodiments, the radial dimension of the ejector rod is smaller than the radial dimension of the punch, and the length of the ejector rod is not less than the axial length of the limiting cylinder.

[0009] In some possible embodiments, the length of the punch is greater than the height of the cavity.

[0010] In some possible embodiments, the mold assembly and the demolding assembly are made of 12Cr material.

[0011] The beneficial effects of this utility model are:

[0012] (1) The design principle is simple and the manufacturing process is easy to implement; (2) It can mount samples of different sizes and shapes, especially small-sized samples, which can meet the needs of small-sized samples in tests such as electron backscatter diffraction (EBSD); (3) It can effectively reduce the amount of mounting powder and reduce experimental costs; (4) After the hot mounting is completed, the adhesion between the mounted sample and the mounting mold is small and the demolding is easy. Attached Figure Description

[0013] Figure 1 This is a cross-sectional schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a cross-sectional view of the concave mold of this utility model.

[0015] Figure 3 This is a cross-sectional view of the limiting cylinder of this utility model.

[0016] Figure 4 This is a schematic diagram of the disassembled three-dimensional structure of this utility model.

[0017] The text labels in the figure represent: 1. Demolding rod; 2. Punch; 3. Die; 31. Mold cavity; 32. Molding cavity; 4. Limiting sleeve; 41. Mating cavity; 42. Demolding cavity. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0019] This embodiment provides a hot-mounting device, including a mold assembly and a demolding assembly.

[0020] The mold assembly includes a punch 2 and a die 3 with a stepped through hole. The stepped through hole is formed by a mold cavity 31 and a forming cavity 32 that are coaxially connected. The inner wall of the mold cavity 31 is clearance-fitted with the punch 2, which can move up and down within the mold cavity 31. The working end of the punch 2 can extend into the forming cavity 32.

[0021] In practical use, the insert material is placed inside the molding cavity 32. First, the punch 2 should be placed inside the cavity, with its working end in contact with the insert material. Then, the punch 2 is pressed down using an extrusion tool to firmly press the insert material into the molding cavity 32. Here, the radial dimension of the molding cavity is larger than that of the mold cavity 31. This is to alleviate the adhesion between the sample and the mold after inserting, and to prevent the powder from being squeezed and embedded in the gap between the solid pressure bar and the inner side of the die during hot inserting, which would make it difficult to remove the solid pressure bar after inserting.

[0022] In some possible embodiments, the size and shape of the holes in the die 3 and the punch 2 can be customized as needed to insert samples of different sizes and shapes. For example, the mold cavity 31 can be designed with square holes, and the corresponding punch 2 can be designed with a square rod structure. The shape and size of the molding cavity 32 can also be set to the required shape as needed.

[0023] To facilitate demolding of the compacted inlay material, the demolding assembly further includes a coaxially fitted limiting cylinder 4 and a demolding rod 1. The limiting cylinder 4 has a mating cavity 41 that fits with the outer wall of the die cavity with a clearance. The lower part of the limiting cylinder 4 has a demolding cavity 42 with a radial dimension larger than that of the forming cavity 32. The demolding rod 1 fits with the die cavity 31 with a clearance and is used to push the punch 2 to guide the inlay sample into the demolding cavity 42. Here, the inner diameter of the mating cavity 41 of the limiting cylinder 4 is slightly larger than the outer diameter of the die cavity 3, and the height of the mating cavity 41 is approximately equal to the height of the die cavity 3, facilitating the insertion and limiting of the die cavity 3. The inner diameter of the demolding cavity 42 is slightly larger than the maximum linear dimension of the cross-section of the inlayed sample, and the height of the demolding cavity 42 is slightly larger than the height of the inlayed sample, facilitating the removal of the inlayed sample. The cross-sectional dimension of the demolding rod 1 is the same as that of the punch 2, and the length of the demolding rod 1 is greater than or equal to the height of the limiting cylinder 4, facilitating the removal of the inlayed sample.

[0024] In some possible embodiments, both the demolding rod 1 and the punch 2 are configured as solid rod structures.

[0025] In practical application of this embodiment, before the inlay process begins, the punch 2 and die 3 of the mold assembly are in a separated state. During the inlay process, after the sample and inlay powder are placed in, the punch 2 is placed inside the cavity 31 of the die 3. Under the action of inlay pressure and high temperature, the punch 2 gradually compacts the molten inlay powder. The outer layer of inlay powder that contacts the forming cavity 32 at the bottom of the die 3 is not directly subjected to the pressure of the punch 2, resulting in a relatively low adhesion force between it and the die 3. After the inlay is completed, the mold assembly and the adhered hot-inlay sample are placed together in the upper part of the limiting cylinder 4. Then, the release rod 1 is placed inside the cavity 31 above the punch 2 of the die 3, and external force is applied along the length of the release rod 1 to remove the inlaid sample.

[0026] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this utility model, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A damascene apparatus, characterized by, The mold assembly and the demolding assembly are provided; The mold assembly comprises a punch and a die provided with a stepped through hole composed of a mold cavity part and a forming cavity part in coaxial communication; the inner wall of the mold cavity part is in clearance fit with the punch; the radial dimension of the forming cavity part is greater than that of the mold cavity part to accommodate the inlaid material; The demolding assembly comprises a limiting cylinder and a demolding rod in coaxial sleeve; the limiting cylinder is provided with a fit cavity part in clearance fit with the outer wall of the die; the lower part of the limiting cylinder is provided with a demolding cavity part with a radial dimension greater than that of the forming cavity part; the punch is used to press the inlaid material in the forming cavity part; the demolding rod is in clearance fit with the mold cavity part and is used to push the punch to guide the inlaid sample into the demolding cavity part.

2. The hot damascene device of claim 1, wherein, Both the demolding rod and the punch are provided as solid rod structures.

3. The hot damascene apparatus of claim 1, wherein, The radial dimension of the demolding rod is smaller than that of the punch, and the length of the demolding rod is not less than the axial length of the limiting cylinder.

4. The hot damascene apparatus of claim 1, wherein, The length dimension of the punch is greater than the height dimension of the mold cavity part.

5. A hot-embedment device according to any one of claims 1-4, characterized in that The materials of the mold assembly and the demolding assembly are 12Cr.

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