A metal corrosion specimen test carrier

Abstract

The utility model belongs to metal corrosion test technical field especially relates to a kind of metal corrosion sample test bracket, it is characterized in that, it is square stool shape frame body, including board surface and four columns, the board surface is hollow screen, the lower surface of screen is equipped with several hooks, the top of four columns is equipped with a clamping groove, the shape of clamping groove is matched with the shape of the bottom end of column, and multiple brackets are stacked upward by clamping groove.Compared with prior art, the beneficial effects of the utility model are as follows: by adopting general building block type bracket unit structure, multiple bracket units can be freely matched and combined, each bracket unit is provided with a board surface and a hook, and each bracket unit is combined and disassembled conveniently; the bracket of the utility model is suitable for both immersion test and salt spray test, has strong versatility, and different tests do not need to replace the bracket, especially suitable for metal corrosion test with a large number of samples, and the test efficiency is effectively guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of metal corrosion testing technology, and in particular relates to a metal corrosion sample test holder. Background Technology

[0002] Metal corrosion testing methods are a set of techniques for testing the corrosion resistance of metallic materials in different environments. They are mainly used to evaluate the applicability of material protection measures, analyze the causes of failure, and verify the adaptability to actual environments. Their classification covers laboratory simulation accelerated testing, field exposure testing, and electrochemical methods, corresponding to different needs such as rapid screening and mechanism research.

[0003] Chemical immersion testing involves preparing metal samples of specific shapes and sizes and immersing them in a selected medium for a certain period. After removal, the corrosion behavior of the metal material is evaluated through methods such as weighing, visual inspection, measuring pitting depth, examining mechanical properties, or analyzing solution composition. This test is also known as the immersion test. Based on the relative position of the sample and the solution, it is divided into three types: full immersion test, partial immersion test, and intermittent immersion test. Chemical immersion testing can be used to evaluate both general and localized corrosion behavior. For evaluating localized corrosion, pitting corrosion samples, crevice corrosion samples, or stress corrosion samples under constant deformation loading can be used for immersion testing.

[0004] Salt spray testing is a corrosion test that uses spray to accelerate corrosion. In a specially designed salt spray chamber, a salt solution saturated with air is continuously or intermittently sprayed as a mist. The salt mist settles onto the sample, forming an extremely thin liquid film. The continuous arrival of new salt mist accelerates the corrosion process. The sample should be supported or suspended so that its main surface forms a 15° to 30° angle with the vertical plane, or is parallel to the main direction of the mist flow. The sample should be positioned to allow the salt mist to settle freely onto all parts of the sample.

[0005] Chinese utility model patent application number 201320326164.4 discloses a passivation device for galvanizing workpieces, used for passivation treatment after galvanizing to enhance their corrosion resistance. It includes a rack with a mounting bracket, an electroplating tank and a passivation tank at the bottom of the rack, an overflow port on the passivation tank, and a recovery tank at the bottom of the passivation tank. The recovery tank is opposite the overflow port, and the electroplating tank and passivation tank are not connected to each other.

[0006] Existing test racks are generally simple support structures, allowing for a small number of samples to be processed at the same time. Furthermore, racks for immersion tests and salt spray tests are not interchangeable. These shortcomings affect the operational efficiency of metal corrosion tests and hinder the coordinated scheduling of multiple tests. Utility Model Content

[0007] The purpose of this utility model is to provide a metal corrosion sample test bracket that overcomes the shortcomings of the prior art. It adopts a universal modular bracket structure, and multiple bracket units can be freely stacked and combined as needed. Each bracket unit is equipped with a plate and hooks, which is suitable for both immersion tests and salt spray tests. It is easy to assemble and disassemble and is suitable for metal corrosion tests of a large number of samples.

[0008] To achieve the above objectives, this utility model provides the following technical solution: A metal corrosion test specimen holder is a square stool-shaped frame, including a plate and four columns. The plate is a perforated mesh plate with several hooks on the lower surface. Each of the four columns has a slot at the top, the shape of which matches the shape of the bottom of the column. Multiple holders are stacked upwards through the slots.

[0009] Furthermore, the slot is L-shaped or straight.

[0010] Furthermore, the perforations in the mesh plate are square, triangular, or rectangular.

[0011] Furthermore, the spacing between adjacent hooks is 30mm-120mm.

[0012] Furthermore, the cross-section of the ribs of the mesh plate is a triangle with sharp corners pointing upwards.

[0013] Furthermore, the frame is made of carbon fiber reinforced plastic or glass fiber reinforced plastic and is integrally molded.

[0014] Furthermore, the hook is L-shaped and integrally formed with the mesh plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are: By adopting a universal modular bracket unit structure, multiple bracket units can be freely matched and plugged together. Each bracket unit is equipped with a plate and hooks, making it very convenient to assemble and disassemble the bracket units. This utility model bracket is suitable for both immersion tests and salt spray tests, making it highly versatile. Different tests do not require changing the bracket, making it particularly suitable for metal corrosion tests with a large number of samples, effectively ensuring test efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 for Figure 1 The left view; Figure 3 for Figure 1 Top view; Figure 4 for Figure 3 Sectional view along line AA; Figure 5 This is a schematic diagram of the combined state of an embodiment of the present utility model; In the figure: 1-plate surface, 2-column, 3-hook, 4-slot, 5-rib, 6-flat specimen, 7-suspended specimen. Detailed Implementation

[0017] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in many different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model.

[0019] See Figure 1-5 This is a schematic diagram of an embodiment of a metal corrosion sample test bracket of the present invention. It is a square stool-shaped frame, including a plate 1 and four columns 2. The plate 1 is a hollow mesh plate, and the lower surface of the mesh plate is provided with several hooks 3. Each of the four columns 2 has a slot 4 at the top. The shape of the slot 4 matches the shape of the bottom end of the column 2. Multiple brackets are stacked upward through the slots 4. The bottom end of the column 2 is fixed in the slot 4 to ensure the stability after stacking.

[0020] The slot 4 can be L-shaped or straight, and it can be adapted to the column 2.

[0021] In this embodiment, the perforations in the mesh are square, but triangular or rectangular perforations can also be used, as long as they are permeable and do not affect the flow of salt spray or soaking solution.

[0022] The spacing between adjacent hooks 3 is 30mm-120mm, which facilitates hanging the suspended sample 7 upwards. Sufficient spacing facilitates operation and prevents scratches and falling off.

[0023] The cross-section of the reinforcing bar 5 of the mesh plate is a triangle with the sharp corner pointing upwards to prevent water from accumulating at the bottom of the flat sample 6 and avoid adverse effects on the test results.

[0024] In this embodiment of the invention, the frame is made of carbon fiber reinforced plastic (CFRP) or glass fiber reinforced plastic (GFRP) and is integrally molded. The hook 3 is L-shaped and integrally molded with the mesh panel. Carbon fiber reinforced plastic (CFRP) or glass fiber reinforced plastic (GFRP) are composite materials. The composite material bracket combines the advantages of multiple materials, possessing both good mechanical properties and corrosion resistance, while maintaining lightweight. The integral molding helps ensure the consistency and standardization of structural dimensions and facilitates combined use.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal corrosion sample test holder, characterized in that, It is a square stool-shaped frame, including a panel and four uprights. The panel is a perforated mesh panel with several hooks on the lower surface. Each of the four uprights has a slot at the top, and the shape of the slot matches the shape of the bottom of the upright. Multiple brackets are stacked upwards through the slots.

2. The metal corrosion sample test holder according to claim 1, characterized in that, The slot is L-shaped or straight.

3. The metal corrosion sample test holder according to claim 1, characterized in that, The perforations in the mesh panel are square, triangular, or rectangular.

4. The metal corrosion sample test holder according to claim 1, characterized in that, The spacing between adjacent hooks is 30mm-120mm.

5. A metal corrosion sample test holder according to claim 1, characterized in that, The cross-section of the ribs in the mesh plate is a triangle with the sharp corner pointing upwards.

6. The metal corrosion sample test holder according to claim 1, characterized in that, The frame is made of carbon fiber reinforced plastic or glass fiber reinforced plastic and is integrally molded.

7. A metal corrosion sample test holder according to claim 1, characterized in that, The hook is L-shaped and integrally formed with the mesh panel.

Images