CN111307698B - Adjustable temperature-controlled corrosion device for testing - Google Patents
Adjustable temperature-controlled corrosion device for testing Download PDFInfo
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- CN111307698B CN111307698B CN202010135781.0A CN202010135781A CN111307698B CN 111307698 B CN111307698 B CN 111307698B CN 202010135781 A CN202010135781 A CN 202010135781A CN 111307698 B CN111307698 B CN 111307698B
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- G01N17/002—Test chambers
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
- G05D23/32—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature with provision for adjustment of the effect of the auxiliary heating device, e.g. a function of time
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Abstract
本发明提供了一种试验用可调式温控腐蚀装置，属于实验设备技术领域，包括外箱、内箱、旋转螺杆以及温度控制系统，内箱安装在外箱的内部，内箱的一个侧面为可滑动箱壁板，所述旋转螺杆的一端安装在可滑动箱壁板上，旋转螺杆的另一端安装在外箱上，内箱上设置有水平刻度尺，当转动旋转螺杆时，可滑动箱壁板能够沿旋转螺杆长度的方向运动，从而实现对腐蚀长度的精确调整，本发明能够实现对不同直径、不同长度的被测试筋材的实验目标区域进行腐蚀试验，通过温度控制系统能够实现对腐蚀溶液温度的精确控制，结构灵活，试验效率高，节约试验空间，实用性强。
The invention provides an adjustable temperature-controlled corrosion device for testing, which belongs to the technical field of experimental equipment and includes an outer box, an inner box, a rotating screw and a temperature control system. The inner box is installed inside the outer box, and one side of the inner box is adjustable Sliding box wall, one end of the rotating screw is installed on the sliding box wall, the other end of the rotating screw is installed on the outer box, and the inner box is provided with a horizontal scale, when the rotating screw is rotated, the sliding box wall It can move in the direction of the length of the rotating screw, so as to realize the precise adjustment of the corrosion length. The invention can realize the corrosion test on the experimental target area of the tested bars with different diameters and different lengths, and the temperature control system can realize the corrosion solution. Precise temperature control, flexible structure, high test efficiency, saving test space, and strong practicability.
Description
Technical Field
The invention relates to the technical field of experimental equipment, in particular to an adjustable temperature control corrosion device for an experiment.
Background
In recent years, with the continuous development, manufacture and application of new materials, fiber reinforced polymer materials gradually come into the field of people and are widely applied in the engineering field. The fiber reinforced polymer rib has the excellent performances of light weight, high strength, corrosion resistance and the like. With the popularization and application of fiber-reinforced polymer bars (such as carbon fiber bars, glass fiber bars, basalt fiber bars and the like) in ocean civil engineering, scientific research personnel and engineering technical personnel are more and more concerned about the degradation condition of the working performance of the fiber-reinforced polymer bars in adverse environments (alkalinity, dry-wet circulation, sea salt, ocean current).
In order to research the mechanical property degradation rule of fiber reinforced polymer bars, novel alloy materials and the like in corrosive environments (such as marine environments, acidic environments, alkaline environments and chloride salt environments), researchers often adopt a corrosion acceleration test mode, place the bars in a prepared simulated corrosion solution, accelerate the corrosion rate in a heating mode, shorten the test period, and establish a mapping relation between the degradation rate of the materials obtained through the acceleration test and the degradation rate of the materials in actual service periods by using a scientific theory, so that a design guide is formed and engineering practice is guided.
Because two ends of the tested reinforcement are often used as clamping ends for mechanical property test research and the like; even directly applying prestress to two ends of a tested piece in the experimental process to realize load-bearing corrosion, thereby better simulating the performance degradation condition of the material in service. Therefore, in the accelerated test, the researchers usually only want to accelerate corrosion of the middle part (test section) of the tested bar, but do not want to corrode and damage the two ends of the tested bar.
At present, most of common corrosion boxes are closed, and only the whole tested piece can be immersed into corrosion or sprayed for corrosion. If the test piece length is great, then corresponding corruption case volume also increases thereupon, both can't realize the local directional corrosion of being surveyed the muscle material, and it is great to occupy the test site simultaneously, and the cost is higher.
Patent document CN107063986A discloses a corrosion box and corrosion test device, belongs to the test equipment field, and the corrosion box includes box, atomizer and salt fog collection device, and atomizer and box are connected, and salt fog collection device and box are connected. Corrosion test device, including test piece strutting arrangement and corruption case, test piece strutting arrangement sets up the inside in the accommodation space of corruption case, and test piece strutting arrangement includes two at least support piece, and two at least support piece all set up to the bar, have the connecting portion that are used for connecting the test piece on the test piece support piece, and connecting portion adopt inert material to make, but this project organization can not be adjusted in a flexible way to the tested muscle material of different lengths, and space utilization is low, and the structure is unreasonable.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an adjustable temperature control corrosion device for a test.
The invention provides an adjustable temperature control corrosion device for a test, which comprises an outer box 1, an inner box 2, a rotary screw 7 and a temperature control system;
the inner box 2 is arranged inside the outer box 1;
one side surface of the inner box 2 is a slidable box wall plate 25, one end of the rotary screw 7 is mounted on the slidable box wall plate 25, the other end of the rotary screw 7 is mounted on the outer box 1, and when the rotary screw 7 is rotated, the slidable box wall plate 25 can move along the length direction of the rotary screw 7;
the temperature control system can control the constancy of the temperature of the liquid in the inner box 2 according to the target temperature, when the temperature of the liquid in the inner box 2 is lower than the target temperature, the temperature control system automatically heats the liquid in the inner box 2, and when the temperature of the liquid in the inner box 2 reaches the target temperature, the temperature control system automatically stops heating the liquid in the inner box 2.
Preferably, the slidable box wall plate 25 is provided with a plurality of first through holes 23, and the other side surface of the inner box 2 opposite to the slidable box wall plate 25 is provided with a plurality of second through holes 24;
the plurality of first through holes 23 includes one or more rows, and the plurality of second through holes 24 includes one or more rows;
the plurality of first through holes 23 are in one-to-one correspondence with the plurality of second through holes 24, wherein the corresponding first through holes 23 and the corresponding second through holes 24 are symmetrically arranged on the inner box 2.
Preferably, the first through hole 23 and the second through hole 24 are respectively provided with a leakage-proof adapter 6;
during the test, the two ends of the tested rib material 8 are mounted on the corresponding first through hole 23 and second through hole 24 through the leakproof adapter 6, wherein the plugging screw caps 14 are mounted on the first through hole 23 and the second through hole 24 which are not provided with the tested rib material 8.
Preferably, the leakproof adapter 6 comprises a packing head 18, a conical rubber clamping ring 19, an adapter body 20, a rubber gasket 21 and a fastening nut 22;
one end of the conversion joint main body 20 extends into the inner box 2 through the first through hole 23 or the second through hole 24 and is sequentially provided with a rubber gasket 21 and a fastening nut 22 along the extending direction, and the other end of the conversion joint main body 20 is arranged outside the inner box 2 and is provided with a packing head 18;
the cone rubber clamping ring 19 is disposed between the packing head 18 and the adapter body 20.
Preferably, the temperature control system comprises a control unit, a resistive heating rod 9 and a temperature sensor 10;
the control unit is arranged outside the outer box 1;
the resistance-type heating rod 9 and the temperature sensor 10 are both arranged in the inner box 2;
the temperature sensor 10 can transmit detected temperature information to the control unit, and the control unit selects to start the resistance heating rod 9 or stop the resistance heating rod 9 to heat according to the received temperature information.
Preferably, a control box is arranged outside the outer box 1;
the control box is sequentially provided with a temperature display screen 5, a temperature controller button 4 and an electric control switch 3 from top to bottom;
the control unit is arranged in the control box;
the electric control switch 3 respectively controls the power-on or power-off of the temperature controller button 4 and the temperature display screen 5;
the target temperature can be set by operating the temperature controller button 4, and the temperature display screen 5 can display the target temperature or the fluid temperature value in the inner box 2.
Preferably, the water circulation system also comprises a water drainage pipe 15, a water inlet pipe 16 and a water circulation pump;
the inlet and the outlet of the circulating water pump are respectively connected with one end of a water inlet pipe 16 and one end of a water discharge pipe 15;
the other end of the water inlet pipe 16 and the other end of the water outlet pipe 15 are respectively connected with the inner box 2.
Preferably, the bottom surface and both side surfaces of the slidable box wall panel 25 are provided with arc-shaped grooves;
and a silica gel strip is arranged in the arc-shaped groove.
Preferably, the bottom of the outer box 1 is provided with a support leg 17, and the top of the outer box 1 is provided with a box cover 13;
the lateral wall of outer container 1 is provided with fixed revolving stage 26, the other end of rotatory screw rod 7 is installed on outer container 1 through fixed revolving stage 26.
Preferably, a vertical scale 11 and a horizontal scale 12 are provided on the inner box 2.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can realize the accurate control of the temperature of the corrosive solution, can also carry out the directional corrosion on the middle part of the target bar without influencing other areas, and can simultaneously adjust the corrosion length by rotating the screw 7 according to the requirement, thereby realizing the accurate control of the corrosion length.
2. Through add the water pump between inlet tube 16 and drain pipe 15, can realize the circulation flow of inner box 2 solution, the simulation environment that flows to study the performance degradation law of surveyed muscle material under the ocean current environment.
3. The invention can realize the directional corrosion to the target area under the premise that other parts are not influenced, can realize the batch and large-scale corrosion loading to the test piece with larger length, and can also realize the special requirements of load-bearing corrosion and the like.
4. The structure is flexible, the test space is saved, the cost is low, and the practicability is high.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of the present invention when a cover 13 is installed;
FIG. 2 is a schematic structural view of the present invention without the cover 13;
FIG. 3 is a top view of the present invention without the lid 13 installed;
FIG. 4 is a top view of the present invention with the lid 13 installed;
FIG. 5 is a front view of the present invention;
FIG. 6 is a left side view of the present invention;
FIG. 7 is a rear view of the present invention;
FIG. 8 is an exploded view of the construction of the leak proof crossover joint 6;
fig. 9 is a top view of the slidable box wall plate 25 and the silicone strip.
The figures show that:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention provides an adjustable temperature control corrosion device for a test, which comprises an outer box 1, an inner box 2, a rotary screw 7 and a temperature control system, wherein the outer box 1 is connected with the inner box 2 through a temperature control device; the inner box 2 is used for containing a required corrosive solution or a simulation solution, the inner box 2 is arranged inside the outer box 1, and the outer box 1 mainly plays a role in protecting the inner box 2 and supporting; one side surface of the inner box 2 is a slidable box wall plate 25, the rotary screw 7 is mounted on the slidable box wall plate 25, the other end of the rotary screw 7 is mounted on the outer box 1 and extends to the outside of the outer box 1, and an operation end is arranged, when the rotary screw 7 is rotated through the operation end, the slidable box wall plate 25 can move along the length direction of the rotary screw 7; in an optimization, a fixed rotating table 26 is arranged on the side wall of the outer box 1, the fixed rotating table 26 is provided with an internal threaded through hole, the fixed rotating table 26 is installed on the outer box 1, an external thread is arranged on the rotating screw 7, one end of the rotating screw 7 with the external thread is installed in the internal threaded through hole on the fixed rotating table 26 in a matching mode, a vertical scale 11 and a horizontal scale 12 are arranged on the inner box 2, according to the actual requirements of the test, the corrosion section length of the tested rib is adjusted and controlled through screwing in and out of the rotating screw 7, in addition, the rotating screw 7 is fixed through a nut, the corrosion section length is guaranteed not to slide under the influence of solution pressure in the corrosion process, and the corrosion test on the experimental target area of the tested rib 8 with different diameters and lengths can be realized.
Further, the number of the rotary screws 7 is one or more, and when a plurality of rotary screws 7 are used for operation, the synchronicity of the sliding of the slidable box wall plate 25 is mainly operated.
Specifically, the tested bars 8 include fiber polymer bars and various common metal bars, wherein the fiber reinforced polymer bars include carbon fiber bars, glass fiber bars, basalt fiber bars, and the like.
Further, as shown in fig. 9, the bottom surface and two side surfaces of the slidable box wall plate 25 are provided with arc-shaped grooves, silica gel strips are arranged in the arc-shaped grooves, edges and corners can be eliminated through the matching of the arc-shaped grooves and the silica gel strips, and meanwhile, the sealing performance is good, so that the solution is prevented from leaking outside.
Specifically, the temperature control system can control the temperature of the liquid in the inner box 2 to be constant according to the target temperature, when the temperature of the liquid in the inner box 2 is lower than the target temperature, the temperature control system automatically heats the liquid in the inner box 2, and when the temperature of the liquid in the inner box 2 reaches the target temperature, the temperature control system automatically stops heating the liquid in the inner box 2. In a preferred example, the temperature control system comprises a control unit, a resistance heating rod 9 and a temperature sensor 10; the control unit is arranged outside the outer box 1; the resistance-type heating rod 9 and the temperature sensor 10 are both arranged in the inner box 2; the temperature sensor 10 can transmit detected temperature information to the control unit, and the control unit selects to start the resistance heating rod 9 or stop the resistance heating rod 9 to heat according to the received temperature information.
Specifically, as shown in fig. 1, the slidable box wall plate 25 is provided with a plurality of first through holes 23, and the other side surface of the inner box 2 opposite to the slidable box wall plate 25 is provided with a plurality of second through holes 24; the plurality of first through holes 23 includes one or more rows, and the plurality of second through holes 24 includes one or more rows; the plurality of first through holes 23 are in one-to-one correspondence with the plurality of second through holes 24 respectively, the circle centers of the corresponding first through holes 23 and the corresponding second through holes 24 are kept on the same horizontal line, wherein the corresponding first through holes 23 and the corresponding second through holes 24 are symmetrically arranged on the inner box 2, and the plurality of first through holes 23 and the plurality of second through holes 24 are arranged to improve the space utilization rate of the box body
Specifically, as shown in fig. 1, the first through hole 23 and the second through hole 24 are respectively provided with a leakage-proof adapter 6; during testing, two ends of the tested rib 8 are mounted on the corresponding first through hole 23 and second through hole 24 through the anti-leakage adapter 6, wherein the first through hole 23 and the second through hole 24 without the tested rib 8 are both provided with the plugging screw cap 14, and in a preferred example, the anti-leakage adapter 6 comprises a fastening head 18, a conical rubber clamping ring 19, an adapter body 20, a rubber gasket 21 and a fastening screw cap 22; one end of the conversion joint main body 20 extends into the inner box 2 through the first through hole 23 or the second through hole 24 and is sequentially provided with a rubber gasket 21 and a fastening nut 22 along the extending direction, and the other end of the conversion joint main body 20 is arranged outside the inner box 2 and is provided with a packing head 18; the cone rubber clamping ring 19 is disposed between the packing head 18 and the adapter body 20. The cone rubber clamping ring 19 is thin in head and thick in tail, the adapter main body 20 is made of PVC material, the front claw is thin in head, and when the tightening head 18 is screwed clockwise, the cone rubber clamping ring 19 and the claw head of the adapter main body 20 can be tightly attached to each other, so that liquid leakage is prevented.
Further, in order to realize the leakage of the corrosive solution in order to prevent the corrosion material from being tightly attached, in the test process, the gap between the tested rib material 8 and the cone rubber clamping ring 19 can be eliminated by screwing the tightening head 18 on the leakage-proof adapter 6, so that the leakage of the solution of the inner box 2 is prevented. For the through hole which is not needed temporarily in the test, a plugging nut 14 is screwed on the port of the anti-leakage adapter 6 close to the inner box 2, so as to plug the inner hole of the anti-leakage interface.
Specifically, as shown in fig. 1, a control box is arranged outside the outer box 1; the control box is sequentially provided with a temperature display screen 5, a temperature controller button 4 and an electric control switch 3 from top to bottom; the control unit is arranged in the control box; the electric control switch 3 respectively controls the power-on or power-off of the temperature controller button 4 and the temperature display screen 5; the target temperature can be set by operating the temperature controller button 4, and the temperature display screen 5 can display the target temperature or the fluid temperature value in the inner box 2.
Specifically, as shown in fig. 1, the water circulation system further comprises a water drainage pipe 15, a water inlet pipe 16 and a water circulation pump; the inlet and the outlet of the circulating water pump are respectively connected with one end of a water inlet pipe 16 and one end of a water discharge pipe 15; the other end of the water inlet pipe 16 and the other end of the water discharge pipe 15 are respectively connected with the inner box 2, so that solution can be conveniently added into and discharged from the inner box 2, the two water pipes are externally connected with water pumps, the circulating flow of the solution in the inner box 2 is realized through the water pumps in the test process, and the circulating speed is controlled and the flowing environment of the tested rib material in service is simulated.
Specifically, as shown in fig. 1, the bottom of the outer box 1 is provided with a support leg 17 for supporting the entire outer box, and the top of the outer box 1 is provided with a box cover 13 for protecting the outer box.
The working principle of the invention is as follows:
firstly, the distance between the slidable box wall plate 25 and the opposite side plate is adjusted by rotating the rotary screw 7 according to the size of a target test area of the tested rib material 8, the horizontal graduated scale 12 is used for observing until the slidable box wall plate 25 reaches a required position, and the movement of the slidable box wall plate 25 is accurately controlled, so that the control of the corrosion width is realized. Installing the tested reinforcement 8, fixing the tested reinforcement 8 through the leakage-proof adapter 6, and installing the plugging screw caps 14 on the first through hole 23 and the second through hole 24 which are not provided with the tested reinforcement 8 for plugging; secondly, adding the prepared simulated corrosion solution into the inner box 2 through a water inlet pipe 16, observing the vertical graduated scale 11 until the required liquid level is reached, then turning on the electric control switch 3, setting the target temperature through a temperature controller button 4, starting the resistance type heating rod 9 under the control of the control unit, electrically connecting the temperature controller button 4 with the temperature sensor 10, and displaying the temperature of the solution in the inner box 2 on the temperature display screen 5 in real time. When the target temperature is reached, the resistance heating rod 9 stops heating and switches to a heat preservation mode. The temperature control system realizes the control of the temperature of the solution through the cooperative work of the temperature controller button 4, the temperature sensor 10 and the resistance-type heating rod 9.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (9)
1. An adjustable temperature control corrosion device for a test is characterized by comprising an outer box (1), an inner box (2), a rotary screw (7) and a temperature control system;
the inner box (2) is arranged inside the outer box (1);
one side surface of the inner box (2) is provided with a slidable box wall plate (25), one end of the rotary screw (7) is mounted on the slidable box wall plate (25), the other end of the rotary screw (7) is mounted on the outer box (1), and when the rotary screw (7) is rotated, the slidable box wall plate (25) can move along the length direction of the rotary screw (7);
the temperature control system can control the temperature of the liquid in the inner box (2) to be constant according to the target temperature, when the temperature of the liquid in the inner box (2) is lower than the target temperature, the temperature control system automatically heats the liquid in the inner box (2), and when the temperature of the liquid in the inner box (2) reaches the target temperature, the temperature control system automatically stops heating the liquid in the inner box (2);
the bottom surface and two side surfaces of the slidable box wall plate (25) are provided with arc-shaped grooves;
a silica gel strip is arranged in the arc-shaped groove;
the lateral wall of outer container (1) is provided with fixed revolving stage (26), the other end of rotatory screw rod (7) is installed on outer container (1) through fixed revolving stage (26).
2. The adjustable temperature-controlled corrosion device for testing according to claim 1, wherein a plurality of first through holes (23) are provided on the slidable box wall plate (25), and a plurality of second through holes (24) are provided on the other side surface of the inner box (2) opposite to the slidable box wall plate (25);
the plurality of first through holes (23) includes one or more rows, and the plurality of second through holes (24) includes one or more rows;
the first through holes (23) are in one-to-one correspondence with the second through holes (24), wherein the corresponding first through holes (23) and the corresponding second through holes (24) are symmetrically arranged on the inner box (2).
3. The adjustable temperature-controlled corrosion device for the test according to claim 2, wherein the first through hole (23) and the second through hole (24) are respectively provided with a leakage-proof adapter (6);
during the test, the two ends of the tested rib (8) are arranged on the corresponding first through hole (23) and the second through hole (24) through the leakproof adapter (6), wherein the first through hole (23) and the second through hole (24) which are not provided with the tested rib (8) are provided with the plugging screw cap (14).
4. The adjustable temperature-controlled corrosion device for testing as claimed in claim 3, wherein said leak-proof adapter (6) comprises a packing head (18), a conical rubber clamping ring (19), an adapter body (20), a rubber washer (21) and a fastening nut (22);
one end of the conversion joint main body (20) penetrates through the first through hole (23) or the second through hole (24) to extend into the inner box (2) and is sequentially provided with a rubber gasket (21) and a fastening nut (22) along the extending direction, and the other end of the conversion joint main body (20) is arranged outside the inner box (2) and is provided with a packing head (18);
the cone rubber clamping ring (19) is arranged between the tightening head (18) and the conversion joint body (20).
5. The adjustable temperature-controlled corrosion device for testing as claimed in claim 1, wherein said temperature control system comprises a control unit, a resistance heating rod (9) and a temperature sensor (10);
the control unit is arranged outside the outer box (1);
the resistance-type heating rod (9) and the temperature sensor (10) are both arranged in the inner box (2);
the temperature sensor (10) can transmit detected temperature information to the control unit, and the control unit selects to start the resistance heating rod (9) to heat or stop the resistance heating rod (9) to heat according to the received temperature information.
6. The adjustable temperature-controlled corrosion device for tests according to claim 5, wherein a control box is arranged outside the outer box (1);
the control box is sequentially provided with a temperature display screen (5), a temperature controller button (4) and an electric control switch (3) from top to bottom;
the control unit is arranged in the control box;
the electric control switch (3) respectively controls the power-on or power-off of the temperature controller button (4) and the temperature display screen (5);
the temperature controller button (4) can be operated to set the target temperature, and the temperature display screen (5) can display the target temperature or the fluid temperature value in the inner box (2).
7. The adjustable temperature-controlled corrosion device for testing according to claim 1, further comprising a water discharge pipe (15), a water inlet pipe (16) and a circulating water pump;
the inlet and the outlet of the circulating water pump are respectively connected with one end of a water inlet pipe (16) and one end of a water discharge pipe (15);
the other end of the water inlet pipe (16) and the other end of the water outlet pipe (15) are respectively connected with the inner box (2).
8. The adjustable temperature-controlled corrosion device for tests according to claim 1, wherein the bottom of the outer box (1) is provided with a support leg (17), and the top of the outer box (1) is provided with a box cover (13).
9. The adjustable temperature-controlled corrosion device for tests according to claim 1, wherein a vertical scale (11) and a horizontal scale (12) are arranged on the inner box (2).
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| CN111707603B (en) * | 2020-06-29 | 2021-09-07 | 浙江天能电池(江苏)有限公司 | Power storage battery plastic shell corrosion resistance testing device and method thereof |
| CN117092301B (en) * | 2023-10-20 | 2023-12-26 | 江苏联卓光电材料有限公司 | Etching capability detection device and detection method for etching solution |
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