Metallic spacer for homogenizing aluminum alloy round bars

Abstract

The utility model provides a metal gasket strip for aluminum alloy round bar homogenization, relates to metal heat treatment processing field, including gasket strip body, gasket strip body has rectangular section, and gasket strip body inside hollow forms first rectangular space, cross rib, cross rib is constituted by two mutually perpendicular cross rib board, cross rib sets up in first rectangular space, four ends of cross rib are connected to the midpoint of four inner wall surfaces of first rectangular space respectively, to divide first rectangular space into four second rectangular spaces, the utility model discloses hollow rectangular section design, and the inside is provided with the exquisite rib structure, compared with the solid or traditional H type section, the design greatly reduces the material consumption under the premise of guaranteeing enough structural strength, and the weight of single gasket strip can be reduced to 20Kg from 33Kg of prior art, and the reduction is close to 40%, greatly reduces the labor intensity of operating personnel, reduces the risk of injury, improves the work efficiency of loading and unloading.

Description

Technical Field

[0001] This utility model relates to the field of metal heat treatment processing technology, and in particular to a metal pad for homogenizing aluminum alloy round bars. Background Technology

[0002] Before extrusion molding, aluminum and aluminum alloy bars typically undergo homogenization heat treatment to eliminate dendritic segregation in the ingot, homogenize the microstructure and composition, thereby improving their plasticity and the final product performance. During homogenization, multiple aluminum bars are stacked in a basket and fed into a homogenizing furnace for heating. To ensure that the hot airflow evenly passes over the surface of each aluminum bar, achieving uniform heating, and to prevent bending deformation of the aluminum bars due to their own weight and the pressure from the upper layers during high-temperature softening, spacers are placed between each layer of aluminum bars for support and separation.

[0003] Early homogenizing pads were generally made of steel with an I-beam cross-section. While these pads were strong, they had several inherent drawbacks. First, the high density of steel made the pads heavy, requiring frequent handling during loading and unloading, resulting in significant labor intensity. Second, at the overlapping points after homogenization, the harder steel pads could leave deep indentations on the relatively softer aluminum rod surface, affecting the product's appearance. Third, condensation could form in the material basket during cooling after homogenization, causing rust on the steel pad surface. This rust would then contaminate the aluminum rod surface, leading to product defects. To address these issues, a technical solution involves replacing the pad material with 3003 aluminum alloy, similar to the aluminum rod, while maintaining the I-beam cross-section (e.g., ...). Figure 1 (Existing technology shown). This improvement has solved the problems of indentation and surface corrosion to some extent, and due to the lower density of aluminum alloy, the weight of a single pad strip has been reduced from 50-60 kg to approximately 33 kg, alleviating some labor intensity. However, under long-term high-temperature-cooling cyclic heat load, the web and flange of the I-shaped aluminum alloy pad strip still tend to undergo thermal deformation such as twisting and warping. Deformation of the pad strip will lead to a decrease in its supporting stability for the aluminum rod, which in turn affects the uniformity of pressure on each layer of aluminum rod, and may result in poor homogenization or deformation of some aluminum rods. In addition, although the weight of a single piece is reduced to 33 kg, it is still a heavy burden for workers who need to operate at high frequency, posing a risk of muscle fatigue and work-related injuries. Therefore, there is an urgent need in the field to develop a new type of homogenizing pad strip, which should have a better lightweight design to significantly reduce the labor intensity of workers, while having excellent high-temperature deformation resistance to ensure the stability of the homogenization process and product quality, and be easy to clean and maintain, thereby improving overall work efficiency. Utility Model Content

[0004] The main objective of this invention is to provide a lightweight, high-temperature resistant homogenizing pad to solve the technical problems in the prior art where the pad is too heavy, leading to high labor intensity for workers, and is prone to deformation at high temperatures, affecting the homogenization effect. To solve the above technical problems, this invention adopts the following technical solution: A metal pad for homogenizing aluminum alloy round bars includes a pad body, the pad body having a rectangular cross section, and the pad body being hollow inside to form a first rectangular space. The cross rib is composed of two perpendicularly intersecting ribs. The cross rib is set in the first rectangular space, and the four ends of the cross rib are respectively connected to the midpoints of the four inner walls of the first rectangular space, thereby dividing the first rectangular space into four second rectangular spaces. The T-shaped rib is set within the second rectangular space, and its three ends are respectively connected to the included angles formed by the three inner walls of the second rectangular space.

[0005] Preferably, the T-shaped ribs are provided in each of the four second rectangular spaces.

[0006] Preferably, the pad strip body, cross ribs and T-ribs are integrally formed, and the pad strip body, cross ribs and T-ribs are made of aluminum alloy, specifically 3003 series aluminum alloy.

[0007] The beneficial effects of this utility model are: 1. This utility model adopts a hollow rectangular cross-section design and has an ingenious rib structure inside. Compared with solid or traditional I-shaped cross-sections, this design greatly reduces the amount of material used while ensuring sufficient structural strength. The weight of a single pad strip can be reduced from 33Kg in the prior art to 20Kg, a reduction of nearly 40%. This greatly reduces the labor intensity of operators, lowers the risk of work-related injuries, and improves the efficiency of loading and unloading.

[0008] 2. The internal cross ribs form the main load-bearing framework, evenly distributing stress throughout the entire pad body. More importantly, T-shaped ribs are innovatively added within the quadrants separated by the cross ribs. These T-shaped ribs act like corner braces, providing strong triangular stability support to the corner areas of the pad, effectively resisting possible torsion, warping, and other deformations of the pad cross-section under high-temperature cycling. This ensures the straightness and support stability of the pad, thereby ensuring uniform stress on each layer of aluminum rods during the homogenization process. 3. Although the weight of this utility model is significantly reduced, the synergistic effect of the cross ribs and T-ribs forms a multi-chamber composite support structure, which ensures the overall bending and compressive stiffness of the pad strip and fully meets the load-bearing requirements of the homogenization process. The use of 3003 aluminum alloy, which is similar to the material of the aluminum rod, maintains good thermal conductivity and avoids scratches and rust contamination on the surface of the aluminum rod, thus ensuring the appearance quality of the final product. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of an existing metal spacer strip; Figure 2 A schematic diagram of the structure of a metal pad for homogenizing an aluminum alloy round bar; Reference numerals: 1. Pad strip body; 2. Cross rib; 3. T-rib. Detailed Implementation

[0010] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0011] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0012] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0013] Example 1 This embodiment proposes a metal pad for homogenizing aluminum alloy round bars. Structurally, the pad includes a pad body 1, cross ribs 2 disposed inside the pad body 1, and four T-shaped ribs 3. Specifically, the pad body 1 has a rectangular cross-section and is hollow, forming a first rectangular space inside. This hollow rectangular structure is the basis for achieving lightweight design. Inside the first rectangular space, cross ribs 2 are provided. Each cross rib 2 consists of a horizontal rib and a vertical rib that intersect perpendicularly at their center points. The two ends of the horizontal rib are connected to the midpoints of the left and right inner walls of the first rectangular space, respectively, and the two ends of the vertical rib are connected to the midpoints of the upper and lower inner walls of the first rectangular space, respectively. Through the cross ribs 2, the large first rectangular space is evenly divided into four smaller second rectangular spaces of the same size. Each second rectangular space uses the rectangular cross ribs 2 as the main internal support framework, effectively improving the overall compressive and bending resistance of the pad. To further resist torsional deformation under high temperature, especially in the corner area, this embodiment provides a T-shaped rib 3 in each second rectangular space. The three ends of the T-shaped rib 3 are respectively connected to the included angle formed by the three inner wall surfaces of the second rectangular space.

[0014] In this embodiment, the pad body 1, cross rib 2, and T-rib 3 are manufactured using an integral molding process. This manufacturing method ensures the connection strength between the parts and the overall structural integrity, eliminating stress concentration points such as welds and resulting in high production efficiency. For material selection, this embodiment uses 3003 series aluminum alloy. This grade of aluminum alloy has good rust resistance, formability, and moderate strength. Its thermophysical properties match those of the aluminum rod to be processed, avoiding additional stress caused by excessive differences in thermal expansion coefficients, and preventing contamination or hard indentations on the aluminum rod surface. Through the above structural design and material selection, a weight reduction of nearly 40% is achieved compared to the previous 33kg I-shaped aluminum alloy pad. The labor intensity of operators during stacking and handling operations is significantly reduced. In practical applications, after multiple production cycles of high-temperature homogenization and cooling cycle testing, the pad did not exhibit any visible bending or twisting deformation, proving its excellent high-temperature structural stability and ensuring the reliability of the homogenization process and the final quality of the aluminum rod product.

[0015] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0016] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A metal spacer for use in homogenizing aluminum alloy round bars, characterized by, Includes a pad strip body, the pad strip body has a rectangular cross section, and the interior of the pad strip body is hollow to form a first rectangular space; The cross rib is composed of two perpendicularly intersecting ribs. The cross rib is set in the first rectangular space, and the four ends of the cross rib are respectively connected to the midpoints of the four inner walls of the first rectangular space, thereby dividing the first rectangular space into four second rectangular spaces. The T-shaped rib is set within the second rectangular space, and its three ends are respectively connected to the included angles formed by the three inner walls of the second rectangular space.

2. A metal spacer strip for use in homogenizing aluminum alloy round bars as defined in claim 1, characterized in that: The T-shaped ribs are provided in each of the four second rectangular spaces.

3. The metal spacer strip for homogenizing aluminum alloy round bars according to claim 1, characterized in that: The pad strip body, cross ribs, and T-ribs are integrally molded structures.

4. The metal spacer strip for homogenizing aluminum alloy round bars according to claim 1, characterized in that: The pad body, cross ribs, and T-ribs are made of aluminum alloy.

5. The metal pad for homogenizing aluminum alloy round bars according to claim 4, characterized in that: The aluminum alloy is a 3003 series aluminum alloy.

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