A storage device for the heat treatment process of impact specimens

Abstract

This utility model relates to a storage device for the heat treatment process of impact specimens, belonging to the technical field of metal specimen heat treatment equipment in the metallurgical industry. The technical solution is as follows: the stainless steel grid (2) is welded from stainless steel steel bars, and its horizontal grid consists of multiple rows of five bars each. The size of the grid matches the impact specimen (5). The stainless steel steel bars at the four corners of the stainless steel grid (2) extend downward and are welded to a stainless steel support base plate (4) respectively. The four stainless steel support base plates (4) are welded together. The extraction hook (1) is fixed on the top of the stainless steel grid (2), and the stainless steel mesh (3) is fixed on the bottom layer of the stainless steel grid (2). The beneficial effects of this utility model are: it can reliably distinguish different groups of impact specimens in each stage of heating and cooling during the heat treatment process, ensuring relatively uniform heating and cooling conditions for each impact specimen, and improving the efficiency and detection accuracy of heat treatment of multiple groups of impact specimens at the same time.

Description

Technical Field

[0001] This utility model relates to a storage device for the heat treatment process of impact specimens, belonging to the technical field of metal specimen heat treatment equipment in the metallurgical industry. Background Technology

[0002] Generally, five impact test specimens are taken from each batch of material for impact performance testing. With multiple batches, the number of impact test specimens required is even greater. To expedite and facilitate impact testing and avoid confusion between specimens from different batches, the five impact test specimens from each batch are typically bundled together with wire. Then, specimens from different batches are simultaneously placed in a quenching furnace for heat treatment, removed, cooled in a cooling medium, and subjected to multiple tempering cycles. The inconsistent heat transfer rates of the five wire-bundled specimens after quenching and tempering lead to variations in cooling rate and uneven hardness, thus affecting the impact energy test value of each specimen. Furthermore, binding the specimens with wire increases the risk of specimen scattering during high-temperature heating, clamping, cooling, and multiple tempering processes, causing confusion. Even with pre-marking of each specimen, the varying degrees of surface oxidation during the high-temperature quenching process can easily lead to obfuscation and confusion. Utility Model Content

[0003] The purpose of this invention is to provide a storage device for the heat treatment process of impact specimens, which can reliably distinguish different groups of impact specimens during the heating and cooling stages of the heat treatment process, ensure relatively uniform heating and cooling conditions for each impact specimen, improve the efficiency and detection accuracy of heat treatment of multiple groups of impact specimens at the same time, and solve the problems existing in the background art.

[0004] The technical solution of this utility model is:

[0005] An impact specimen heat treatment storage device includes an extraction hook, a stainless steel grid, a stainless steel mesh, and a stainless steel support base plate. The stainless steel grid is welded from stainless steel bars, with multiple rows of five horizontal grids. The size of the grid matches the impact specimen. The stainless steel bars at the four corners of the stainless steel grid extend downwards and are welded to a stainless steel support base plate. The four stainless steel support base plates are welded together. The extraction hook is fixed to the top of the stainless steel grid, and the stainless steel mesh is fixed to the bottom layer of the stainless steel grid.

[0006] The stainless steel grid has eight rows of horizontal grids, with five grids in each row, for a total of forty grids.

[0007] The stainless steel mesh has a mesh size of Φ3-Φ5mm.

[0008] The stainless steel mesh is located on top of the stainless steel support base plate.

[0009] The extraction hook is U-shaped.

[0010] The advantages of this invention are: it allows for the relative fixation of impact specimens during each stage of heat treatment, including heating and cooling, reliably distinguishing different groups of impact specimens and preventing sample mixing during the process. Multiple groups of impact specimens can be heat-treated in a single heat treatment process, improving testing efficiency.

[0011] This invention has a simple structure and is easy to use. It ensures relatively uniform heating and cooling conditions for each impact specimen, improves the detection accuracy of multiple impact specimens undergoing heat treatment simultaneously, and is convenient to operate and maintain, and safe and reliable to use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure and installation of this utility model;

[0013] In the figure: 1. Extraction hook; 2. Stainless steel grid; 3. Stainless steel mesh; 4. Stainless steel support base plate; 5. Impact specimen. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and examples.

[0015] See attached document Figure 1 An impact specimen heat treatment storage device includes an extraction hook 1, a stainless steel grid 2, a stainless steel mesh 3, and a stainless steel support base plate 4. The stainless steel grid 2 is welded from stainless steel bars, and its horizontal grid consists of multiple rows of five bars each. The size of the grid matches the impact specimen 5. The stainless steel bars at the four corners of the stainless steel grid 2 extend downward and are welded to a stainless steel support base plate 4 respectively. The four stainless steel support base plates 4 are welded together. The extraction hook 1 is fixed on the top of the stainless steel grid 2, and the stainless steel mesh 3 is fixed on the bottom layer of the stainless steel grid 2.

[0016] In this embodiment, refer to the appendix Figure 1 The storage device, used for the quenching and tempering process of impact specimens, includes an extraction hook 1, a stainless steel grid 2, a stainless steel mesh 3, and a stainless steel support base plate 4, wherein:

[0017] The extraction hook 1 has a U-shaped structure and is welded to the stainless steel grid 2, which can be easily gripped with pliers.

[0018] The stainless steel grid 2 is about 40mm high and is made of 3 layers of Φ5mm stainless steel steel bars welded together. There are 5*8=40 horizontal grids. The size of the grid is 2-5mm larger than the rough machining size of the impact specimen, which makes it easy for the impact specimen to be slightly shaken in the cooling medium after high temperature heating, so as to achieve a uniform cooling effect. It can hold 40 impact specimens at the same time. The impact specimens protrude about 15mm from the upper surface of the stainless steel grid 2, which is convenient for the storage and retrieval of the impact specimens.

[0019] The steel bars at the four corners of the stainless steel grating 2 extend downwards by approximately 20mm and are welded to the stainless steel support base plate 4. The stainless steel support base plate 4 is 10mm wide and 5mm thick, consisting of four pieces welded together to ensure the stability of the entire stainless steel grating.

[0020] The stainless steel mesh 3 has a aperture of Φ3-Φ5mm and a thickness of approximately 5mm. It is fixed to the bottom layer of the stainless steel grid 2 and can withstand the weight of the impact sample at high temperatures, facilitating the dripping of cooling medium. The distance between the stainless steel mesh 3 and the stainless steel support base plate 4 is approximately 20mm, which ensures uniform heating and cooling processes at the bottom of the impact sample.

[0021] All the above components are made of austenitic stainless steel, and the frame structure is welded with stainless steel welding rods, ensuring robustness and reliability, and preventing material oxidation and deformation under high-temperature heating and cooling conditions. The stainless steel mesh 3 and stainless steel grid 2 ensure uniform heating and cooling of the impact specimen during quenching and cooling processes, preventing the accumulation of cooling medium and ensuring high operational safety. After high-temperature heating, the extraction hook 1 can be clamped with pliers, and the entire specimen can be placed in the cooling medium. After cooling, it can be removed as a whole and placed in the heating furnace for tempering. The entire process does not require individual movement of the impact specimen, making operation simple.

Claims

1. An impact specimen heat treatment process storage device characterized by: The device includes an extraction hook (1), a stainless steel grid (2), a stainless steel mesh (3), and a stainless steel support base plate (4). The stainless steel grid (2) is welded from stainless steel bars. Its horizontal grid consists of multiple rows of five bars each. The size of the grid matches the impact test specimen (5). The stainless steel bars at the four corners of the stainless steel grid (2) extend downward and are welded to a stainless steel support base plate (4) respectively. The four stainless steel support base plates (4) are welded together. The extraction hook (1) is fixed on the top of the stainless steel grid (2), and the stainless steel mesh (3) is fixed on the bottom layer of the stainless steel grid (2).

2. A storage device for an impact specimen heat treatment process according to claim 1, wherein: The stainless steel grid (2) has eight rows of horizontal grids, with five grids in each row, for a total of forty grids.

3. The apparatus of claim 1 wherein: The aperture of the stainless steel mesh (3) is Φ3-Φ5mm.

4. The apparatus of claim 1 wherein: The stainless steel mesh (3) is located on top of the stainless steel support base plate (4).

5. The apparatus of claim 1 wherein: The extraction hook (1) is U-shaped.

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