Zinc impregnation layer salt spray test box for corrosion resistance test

Abstract

The utility model relates to the field of corrosion test boxes, and discloses a zinc impregnation layer salt spray test box for a corrosion resistance test, which comprises a main body, and the main body comprises a control system, a heating system, a temperature control system and a spraying device which are arranged in the main body; a test room is formed in the main body; the test room penetrates through the top of the main body; a sealing plate is mounted at the top of the test room; the sample rack comprises four stand columns which are fixedly connected to the bottom wall of the test room; a transverse rod is arranged between the two stand columns located on the same side. According to the utility model, the plurality of supporting rods slide in the cross rod, so that the sample rack can be adjusted according to the specification and the size of a sample, the contact area between salt mist and the sample is increased, and the situation that the cross rod and the supporting rods with smaller gaps shield the surface and the bottom of the sample, so that the salt mist cannot be uniformly sprayed to the parts is avoided; therefore, the local corrosion degree of the sample is not consistent with the actual condition, and the evaluation of the overall corrosion resistance of the zinc impregnation layer is influenced.

Description

Technical Field

[0001] This utility model relates to the field of corrosion test chambers, and in particular to a zinc-impregnated salt spray test chamber for corrosion resistance testing. Background Technology

[0002] A zinc-coated coating salt spray test chamber is a testing device primarily used to test the corrosion resistance of zinc-coated coatings and other metal protective layers. It typically uses a spray system to atomize a sodium chloride solution of a certain concentration into tiny salt spray particles, which are then evenly distributed within the test chamber to simulate marine environments or other harsh salt spray corrosion environments. By controlling parameters such as temperature, humidity, and salt spray concentration within the test chamber, the corrosion of the zinc-coated coating is accelerated, allowing for a relatively short evaluation of its corrosion resistance during long-term use.

[0003] Salt spray test chambers for zinc plating typically include sample racks for placing samples. Existing sample racks generally have fixed columns, crossbars, and supports, making them unadjustable based on sample size. Furthermore, to accommodate samples of various sizes, the gaps between the crossbars and supports are usually small. This means that when supporting larger samples, the narrow gaps may obstruct the sample surface and bottom, potentially preventing the salt spray from evenly reaching these areas. This can result in localized corrosion levels that do not match actual conditions, affecting the assessment of the overall corrosion resistance of the zinc plating layer.

[0004] Therefore, this application provides a zinc-impregnated salt spray test chamber for corrosion resistance testing to meet the requirements. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a zinc-impregnated salt spray test chamber for corrosion resistance testing, so as to solve the problem that the gap between the crossbar and support rod of the existing sample rack is too small, which makes it impossible for the salt spray to be evenly sprayed onto the sample surface.

[0006] To solve the problems mentioned above, this utility model is implemented through the following technical solution.

[0007] A zinc-coated salt spray test chamber for corrosion resistance testing, comprising:

[0008] The main body includes a control system, a heating system, a temperature control system, and a spraying device installed inside itself;

[0009] The main building houses a testing room;

[0010] The test chamber extends through the top of the main structure, and the top of the test chamber is fitted with a closed panel.

[0011] The sample rack includes a test chamber with four uprights fixedly connected to the bottom wall;

[0012] A crossbar is installed between two columns located on the same side, and the two ends of the crossbar are fixedly connected to the two columns on the same side respectively;

[0013] There shall be at least one horizontal bar along the direction of the column;

[0014] The crossbar has a cavity inside;

[0015] The same support rod is slidably connected within the cavity of two horizontal bars located on the same horizontal plane;

[0016] At least two support rods are installed in the cavity created by two horizontal bars located on the same horizontal plane.

[0017] A connecting bend is provided in the middle of the support rod, and the two ends of the connecting bend are fixedly connected to the support rods on both sides;

[0018] The connecting bend is flexible;

[0019] The support rod is located inside the cavity, and counterweights are fixedly connected to both ends.

[0020] There is a gap between the column and the inner side wall of the test chamber, and a dome is fixedly connected to the top of the column.

[0021] The cross section of the crossbar is circular.

[0022] Each of the columns is connected to only one crossbar at a time.

[0023] The counterweights are installed at the bottom of both ends of the support rod.

[0024] The cavity has a horizontal bar running through it near the center of the test chamber. Several positioning grooves and limiting grooves are provided on the inner walls of the upper and lower sides of the cavity. A protrusion is fixedly connected to the horizontal side wall at the bottom of the cavity.

[0025] Both sides of the support rod are fixedly connected to limit arc blocks and positioning blocks, and the support rod can rotate at a certain angle with the protrusion as the fulcrum.

[0026] The limiting arc block is always located in the limiting groove, and the positioning block can rotate with the support rod and enter the positioning groove.

[0027] The adjacent positioning slots are spaced at the same distance, and the length of the adjacent distance is much smaller than the length of the positioning slot.

[0028] When the main body is in operation, the test room is a closed environment.

[0029] This invention provides a zinc-coated salt spray test chamber for corrosion resistance testing. Compared with the prior art, it has the following advantages:

[0030] By having multiple support rods slide inside the crossbar, the sample holder can be adjusted according to the specifications and size of the sample, increasing the contact area between the salt spray and the sample. This avoids the crossbars and support rods with small gaps from obscuring the sample surface and bottom, preventing the salt spray from being sprayed evenly to these areas. This would cause the degree of localized corrosion on the sample to be inconsistent with the actual situation, affecting the assessment of the overall corrosion resistance of the zinc-infiltrated layer. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0032] Figure 2 This is a schematic diagram of the internal cross-sectional structure of this utility model.

[0033] Figure 3 This is a schematic diagram of the overall structure of the sample holder of this utility model.

[0034] Figure 4 This is a schematic diagram of the cross-sectional structure of the crossbar of this utility model.

[0035] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the support rod of this utility model.

[0036] Figure 6 This is a schematic diagram of the overall structure of the positioning groove of this utility model.

[0037] Figure 7 This is a schematic diagram of the connection structure between the support rod and the connecting bent plate of this utility model.

[0038] The attached figures are labeled as follows:

[0039] 10. Main body; 11. Test chamber; 12. Enclosure panel; 20. Column; 21. Dome; 22. Horizontal bar; 221. Cavity; 222. Positioning groove; 223. Limiting groove; 224. Protrusion; 23. Support rod; 231. Limiting arc block; 232. Positioning block; 233. Counterweight block; 24. Connecting bend plate. Detailed Implementation

[0040] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0041] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0042] Reference Figures 1-7 A zinc-coated salt spray test chamber for corrosion resistance testing, comprising:

[0043] The main body 10 includes a control system, a heating system, a temperature control system, and a spraying device installed inside itself.

[0044] The main body 10 has an experimental room 11 inside;

[0045] The test chamber 11 extends through the top of the main body 10, and a sealing plate 12 is installed on the top of the test chamber 11.

[0046] Furthermore, such as Figure 1 and Figure 2 As shown, the test chamber 11 can be enclosed by the sealing plate 12.

[0047] The sample rack includes a test chamber 11 with four uprights 20 fixedly connected to the bottom wall;

[0048] A crossbar 22 is provided between two columns 20 located on the same side, and the two ends of the crossbar 22 are fixedly connected to the two columns 20 on the same side respectively;

[0049] There shall be at least one horizontal bar 22 along the direction of the column 20;

[0050] Furthermore, such as Figure 3 As shown, multiple layers of crossbars 22 are provided to increase the amount of material that can be placed.

[0051] The crossbar 22 has a cavity 221 inside;

[0052] The same support rod 23 is slidably connected within the cavity 221 of the two horizontal bars 22 located on the same horizontal plane;

[0053] Furthermore, such as Figure 3 As shown, the support rod 23 slides within the crossbars 22 on both sides.

[0054] Not less than two support rods 23 are provided in the cavity 221 opened by the two horizontal bars 22 located on the same horizontal plane;

[0055] Furthermore, such as Figure 3 As shown, by cooperating with multiple support rods 23, different gaps can be set according to the different specifications and volumes of the sample, so as to avoid the support rods 23 being too numerous and clustered together and obscuring the sample.

[0056] A connecting bend plate 24 is provided in the middle of the support rod 23, and the two ends of the connecting bend plate 24 are fixedly connected to the support rods 23 on both sides;

[0057] The connecting bend 24 is flexible;

[0058] Furthermore, as shown in the figure, when the support rods 23 connected to both ends of the connecting bend plate 24 rotate, the connecting bend plate 24 bends at the corresponding angle to adapt.

[0059] The support rod 23 has a counterweight 233 fixedly connected to both ends inside the cavity 221.

[0060] Furthermore, such as Figure 4 and Figure 5 As shown, the center of gravity of support rod 23 is changed.

[0061] There is a gap between the column 20 and the inner side wall of the test chamber 11, and a dome 21 is fixedly connected to the top of the column 20.

[0062] Furthermore, such as Figure 2 As shown, this is to prevent salt spray inside the test chamber 11 from gradually accumulating between the sample rack and the side wall of the test chamber 11, which would affect the movement of the support rod 23 and the accuracy of the test.

[0063] The vertical cross section of the horizontal bar 22 is circular.

[0064] Furthermore, such as Figure 4 As shown, this is to prevent salt spray from accumulating at the top of crossbar 22.

[0065] Each column 20 is connected to only one horizontal bar 22 at a time.

[0066] Furthermore, such as Figure 3 As shown, while not affecting the basic function of the sample holder, the number of objects that may cause obstruction in the test room 11 is reduced.

[0067] The counterweight 233 is installed at the bottom of both ends of the support rod 23.

[0068] Furthermore, such as Figure 5 As shown, the center of gravity of the support rod 23 is brought close to one end of the counterweight block 233, and the support rod 23 is rotated upward at a certain angle towards the side of the connecting bending plate 24. At this time, the positioning block 232 is located in the positioning groove 222 and cannot move, and the support rod 23, which is fixedly connected to the positioning block 232, also cannot move.

[0069] The cavity 221 has a horizontal bar 22 extending through it near the center of the test chamber 11. Several positioning grooves 222 and limiting grooves 223 are provided on the inner walls of the upper and lower sides of the cavity 221. A protrusion 224 is fixedly connected to the horizontal side wall at the bottom of the cavity 221.

[0070] Furthermore, such as Figure 4 As shown, this facilitates the sliding of the support rod 23 within the crossbar 22.

[0071] Limiting arc blocks 231 and positioning blocks 232 are fixedly connected to both sides of the support rod 23. The support rod 23 can rotate at a certain angle with the protrusion 224 as the fulcrum.

[0072] Furthermore, such as Figure 4 As shown, the contact between the protrusion 224 and the support rod 23 provides a fulcrum for the rotation of the support rod 23.

[0073] The limiting arc block 231 is always located in the limiting groove 223, and the positioning block 232 can rotate with the support rod 23 and enter the positioning groove 222.

[0074] Furthermore, such as Figure 4 As shown, a limiting arc block 231 is provided inside the limiting groove 223 to limit the rotation range of the support rod 23.

[0075] The adjacent positioning slots 222 are spaced at the same distance, and the length of the adjacent distance is much smaller than the length of the positioning slot 222.

[0076] Furthermore, such as Figure 6 As shown, when the support rod 23 rotates up or down, the positioning block 232 can smoothly enter the positioning groove 222, and fix the positioning block 232 in the positioning groove 222 and the support rod 23 fixedly connected to the positioning block 232.

[0077] When the main body 10 is working, the test room 11 is a closed environment.

[0078] Furthermore, such as Figure 1 and Figure 2 As shown, this ensures the normal progress of the experiment.

[0079] Working process and principle: When a sample needs to be tested, the sealing plate 12 is opened. At this time, the positioning block 232 is located inside the positioning groove 222, and the support rod 23 cannot slide within the crossbar 22. After pressing down the connecting bending plate 24 to bring the connecting bending plate 24 and the support rod 23 to the same horizontal plane, the positioning block 232 is dislodged from the positioning groove 222, and the support rod 23 can slide. At this time, the position of the support rod 23 on the crossbar 22 can be adjusted according to the specifications and size of the sample. When the sample is large, the distance between the support rods 23 is increased; when the sample is small, the distance between the support rods 23 is decreased. After the support rod 23 is adjusted, the sample is placed on top of the support rod 23. The support rod 23 is subjected to a downward force and rotates downward, causing the positioning block 232 at the top of the support rod 23 to enter the positioning groove 222 at the top. The support rod 23 is fixed, preventing displacement caused by external forces. At this point, due to its own weight, the sample tilts downwards on both sides of the support rods 23, causing most of the sample's bottom area to no longer be in contact with the support rods 23. This allows the sample to better contact with the salt spray, improving the accuracy of the test. The test chamber 11 is enclosed by a sealing plate 12, and the control system controls the heating system, temperature control system, and spray system to conduct the test on the sample. After the test, the sealing plate 12 is opened, and the sample is removed.

[0080] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A zinc-coated salt spray test chamber for corrosion resistance testing, characterized in that, include: The main body (10) includes a control system, a heating system, a temperature control system and a spraying device installed inside itself; The main body (10) has an experimental room (11) inside; The test chamber (11) extends through the top of the main body (10), and a closed panel (12) is installed on the top of the test chamber (11); The sample rack includes a test chamber (11) with four uprights (20) fixedly connected to the bottom wall; A crossbar (22) is provided between two columns (20) located on the same side, and the two ends of the crossbar (22) are fixedly connected to the two columns (20) on the same side respectively; There shall be at least one horizontal bar (22) along the direction of the column (20); The crossbar (22) has a cavity (221) inside; The same support rod (23) is slidably connected in the cavity (221) of the two horizontal bars (22) located on the same horizontal plane; Two crossbars (22) located on the same horizontal plane have a cavity (221) with at least two support rods (23) installed inside; A connecting bend plate (24) is provided in the middle of the support rod (23), and the two ends of the connecting bend plate (24) are fixedly connected to the support rods (23) on both sides; The connecting bend (24) is flexible; The support rod (23) is located inside the cavity (221) and both ends are fixedly connected to counterweights (233).

2. The zinc-coated salt spray test chamber for corrosion resistance testing according to claim 1, characterized in that, There is a gap between the column (20) and the inner side wall of the test chamber (11), and a dome (21) is fixedly connected to the top of the column (20).

3. The zinc-coated salt spray test chamber for corrosion resistance testing according to claim 1, characterized in that, The cross section of the horizontal bar (22) is circular.

4. The zinc-coated salt spray test chamber for corrosion resistance testing according to claim 1, characterized in that, Each of the columns (20) is connected to only one crossbar (22) at a time.

5. A zinc-coated salt spray test chamber for corrosion resistance testing according to claim 1, characterized in that, The counterweight (233) is installed at the bottom of both ends of the support rod (23).

6. A zinc-coated salt spray test chamber for corrosion resistance testing according to claim 1, characterized in that, The cavity (221) is transversely connected to the crossbar (22) near the center of the test chamber (11). Several positioning grooves (222) and limiting grooves (223) are provided on the inner walls of the upper and lower sides of the cavity (221). A protrusion (224) is fixedly connected to the transverse side wall at the bottom of the cavity (221).

7. A zinc-coated salt spray test chamber for corrosion resistance testing according to claim 1, characterized in that, The support rod (23) is fixedly connected to both sides by a limiting arc block (231) and a positioning block (232), and the support rod (23) can rotate at a certain angle with the protrusion (224) as the fulcrum.

8. A zinc-coated salt spray test chamber for corrosion resistance testing according to claim 7, characterized in that, The limiting arc block (231) is always located in the limiting groove (223), and the positioning block (232) can rotate with the support rod (23) and enter the positioning groove (222).

9. A zinc-coated salt spray test chamber for corrosion resistance testing according to claim 6, characterized in that, The adjacent positioning slots (222) are spaced at the same distance, and the length of the adjacent distance is much smaller than the length of the positioning slot (222).

10. A zinc-coated salt spray test chamber for corrosion resistance testing according to claim 1, characterized in that, When the main body (10) is working, the test room (11) is a closed environment.

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