CN209784145U - Salt fog-salt solution corrosion test device - Google Patents
Salt fog-salt solution corrosion test device Download PDFInfo
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- CN209784145U CN209784145U CN201920167387.8U CN201920167387U CN209784145U CN 209784145 U CN209784145 U CN 209784145U CN 201920167387 U CN201920167387 U CN 201920167387U CN 209784145 U CN209784145 U CN 209784145U
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Abstract
The utility model discloses a salt spray-salt solution corrosion test device, which comprises a test barrel body, and is characterized in that a temperature and humidity sensor, a vacuum pressure gauge and a variable frequency motor are arranged at the top of the test barrel body, an air electric heater is arranged at the upper part of the test barrel body, air inlet unit and air exhaust device, the level is provided with the support that can reciprocate that is used for placing the piece of waiting to test in the experimental barrel, the lower part of experimental barrel is provided with the liquid electric heater who is used for heating the salt solution, the bottom of experimental barrel is provided with the test electrode of being connected with outside electrochemistry workstation, axial is provided with the transmission shaft of being connected with inverter motor in the experimental barrel, the upper portion of transmission shaft is provided with the last blade that is used for evenly stirring the air, the lower part of transmission shaft is provided with the lower blade that is used for evenly stirring the salt solution, the advantage can carry out high temperature simultaneously, salt fog and salt solution corrosion test and solution under the low atmospheric pressure condition are.
Description
Technical Field
The utility model relates to a salt fog-salt solution corrosion test device.
Background
Salt spray-salt solution corrosion is one of the failure modes widely existing in mechanical parts, metal materials, industrial products and electronic components. The salt spray-salt solution corrosion mechanism under different conditions is researched, particularly the salt spray-salt solution corrosion behaviors of typical metal materials such as 10# carbon steel, 15CrMo steel, dual-phase steel 2205, alloy Incoloy825 and stainless steel 316L under different temperatures and humidities can provide a basis for mechanical design material selection, corrosion life prediction, risk assessment and the like under humid and salt-containing application environments.
The existing salt solution corrosion test device mainly comprises a barrel, an electrochemical workstation, a temperature and humidity sensor, an ultrasonic atomizer, a temperature and humidity control system and the like, and can be used for carrying out the following two types of experimental researches: (1) under-scale corrosion research of salt on the surface of a metal material in different temperature and humidity environments: the temperature and humidity sensor, the controller, the ultrasonic atomizer and the heating wire are combined to meet the control requirement on the environment temperature and humidity; the method for covering ammonium salt particles on the surface of a corrosion test piece is adopted to simulate the under-scale corrosion environment: the corrosion rate of the metal material is obtained by a weight loss method, and the under-scale corrosion mechanism is researched by combining the morphology analysis of a Scanning Electron Microscope (SEM) and the energy spectrum (EDS) analysis of corrosion products. (2) Study of corrosion rules of metallic materials in salt solutions: installing an electrochemical sensor on the wall surface of the bottom of a cylinder filled with saturated salt solution, performing electrochemical test, and analyzing the corrosion electrochemical characteristics of the material in the salt solution to obtain the corrosion rate of the metal material; the method is characterized in that stirring equipment is added to simulate the dynamic corrosion behavior of a salt solution on a metal material, and a Scanning Electron Microscope (SEM) is combined to analyze the film performance and the passivation characteristic of a corrosion product of a typical material in the solution, but the method can only carry out an under-scale corrosion test or a salt solution corrosion test of the salt at normal temperature and normal pressure, and the two tests cannot be carried out simultaneously; the concentration of the salt solution in the test device is not uniform, and the test effect is influenced.
Disclosure of Invention
The utility model aims to solve the technical problem that a salt fog-salt solution corrosion test device that salt fog and salt solution corrosion test and concentration are even under the high temperature, the low pressure condition can be carried out simultaneously is provided.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a salt fog-salt solution corrosion test device, includes experimental barrel, the top of experimental barrel be provided with temperature and humidity sensor, vacuum pressure meter and inverter motor, the upper portion of experimental barrel be provided with air electric heater, air inlet unit and air exhaust device, the internal level of experimental barrel be provided with the support that can reciprocate that is used for placing the piece of waiting to test, the lower part of experimental barrel be provided with the liquid electric heater who is used for heating the salt solution, the bottom of experimental barrel be provided with the test electrode of being connected with outside electrochemistry workstation, experimental barrel in axially be provided with inverter motor connect the transmission shaft, the upper portion of transmission shaft be provided with the last blade that is used for evenly stirring the air, the lower part of transmission shaft be provided with the lower blade that is used for evenly stirring the salt solution.
The air electric heater and the liquid electric heater are respectively connected with an industrial controller.
The air inlet device comprises an air compressor, a flow regulating valve and an expansion nozzle which are sequentially connected, and the expansion nozzle is connected with the test cylinder body.
The air exhaust device comprises a vacuum pump and a stop valve which are connected in sequence, and the stop valve is connected with the test cylinder.
And a liquid heat-insulating layer is arranged on the outer wall of the lower part of the test cylinder.
The top in the test cylinder body is provided with a horizontal isolation baffle plate for preventing salt mist from condensing on the top of the test cylinder body.
Compared with the prior art, the utility model has the advantages of: the salt spray-salt solution corrosion test device of the utility model places the salt solution in the test cylinder body, and can simultaneously carry out salt spray and salt solution corrosion tests under the conditions of high temperature (less than or equal to 90 ℃) and low air pressure (vacuum degree less than or equal to 90 kPa); the rotating speed is adjusted through the variable frequency motor, and the salt mist concentration of the gas phase region of the upper half part of the test cylinder body and the salt solution concentration of the liquid phase region of the lower half part of the test cylinder body can be more uniform by matching the upper blade, the lower blade and the isolation baffle; meanwhile, the corrosion of the salt spray solution can be tested at different rotating speeds (0-3000 r/min).
Drawings
FIG. 1 is a schematic structural diagram of the salt spray-salt solution corrosion test device of the present invention; the figures are labeled as follows: 1-an electrochemical workstation; 2-an industrial controller; 3-an air compressor; 4-vacuum pump; 5-flow regulating valve; 6-a stop valve; 7-expanding the nozzle; 8-an air electric heater; 9-liquid electric heater; 10-a temperature and humidity sensor; 11-vacuum pressure gauge; 12-a variable frequency motor; 13-upper leaf; 14-lower blade; 15-test piece; 16-a test electrode; 17-a drive shaft; 18-a scaffold; 19-liquid insulating layer; 20-test cylinder; 21-horizontal isolation barrier.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
A salt spray-salt solution corrosion test device is shown in figure 1, and comprises a test cylinder 20, a temperature and humidity sensor 10, a vacuum pressure gauge 11 and a variable frequency motor 12 are arranged at the top of the test cylinder 20, an air electric heater 8 is arranged at the upper part of the test cylinder 20, air inlet unit and air exhaust device, the level is provided with the support 18 that can reciprocate that is used for placing the piece 15 of waiting to test in the experimental barrel 20 (the height of support 18 can be adjusted according to the height of liquid level), the lower part of experimental barrel 20 is provided with the liquid electric heater 9 that is used for heating the salt solution, the bottom of experimental barrel 20 is provided with the test electrode 16 of being connected with outside electrochemistry workstation 1, the axial is provided with the transmission shaft 17 of being connected with inverter motor in experimental barrel 20, the upper portion of transmission shaft 17 is provided with the last blade 13 that is used for evenly stirring the air, the lower part of transmission shaft 17 is provided with the lower blade 14 that is used for evenly stirring the salt solution.
In this embodiment, an electric air heater 8 and an electric liquid heater 9 are connected to the industrial controller 2, respectively. The air inlet device comprises an air compressor 3, a flow regulating valve 5 and an expansion nozzle 7 which are sequentially connected, and the expansion nozzle is connected with the test cylinder 20. The air extractor comprises a vacuum pump 4 and a stop valve 6 which are connected in sequence, and the stop valve 6 is connected with the test cylinder 20. The outer wall of the lower part of the test cylinder body 20 is provided with a liquid heat-insulating layer 19. The top inside the test cylinder 20 is provided with a horizontal isolation baffle 21 for preventing salt spray from condensing on the top of the test cylinder 20.
The above embodiments are further illustrative of the present invention, but the scope of the present invention is subject to the claims.
Claims (6)
1. The utility model provides a salt fog-salt solution corrosion test device, includes experimental barrel, its characterized in that: the top of experimental barrel be provided with temperature and humidity sensor, vacuum pressure meter and inverter motor, the upper portion of experimental barrel be provided with air electric heater, air inlet unit and air exhaust device, the internal level of experimental barrel be provided with the support that can reciprocate that is used for placing the piece of waiting to test, the lower part of experimental barrel be provided with the liquid electric heater who is used for heating the salt solution, the bottom of experimental barrel be provided with the test electrode of being connected with outside electrochemistry workstation, experimental barrel in axially be provided with inverter motor the transmission shaft of connecting, the upper portion of transmission shaft be provided with the last blade that is used for evenly stirring the air, the lower part of transmission shaft be provided with the lower blade that is used for evenly stirring the salt solution.
2. The salt spray-salt solution corrosion test device of claim 1, wherein: the air electric heater and the liquid electric heater are respectively connected with an industrial controller.
3. The salt spray-salt solution corrosion test device of claim 1, wherein: the air inlet device comprises an air compressor, a flow regulating valve and an expansion nozzle which are sequentially connected, and the expansion nozzle is connected with the test cylinder body.
4. The salt spray-salt solution corrosion test device of claim 1, wherein: the air exhaust device comprises a vacuum pump and a stop valve which are connected in sequence, and the stop valve is connected with the test cylinder.
5. The salt spray-salt solution corrosion test device of claim 1, wherein: and a liquid heat-insulating layer is arranged on the outer wall of the lower part of the test cylinder.
6. The salt spray-salt solution corrosion test device of claim 1, wherein: the top in the test cylinder body is provided with a horizontal isolation baffle plate for preventing salt mist from condensing on the top of the test cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167387.8U CN209784145U (en) | 2019-01-31 | 2019-01-31 | Salt fog-salt solution corrosion test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167387.8U CN209784145U (en) | 2019-01-31 | 2019-01-31 | Salt fog-salt solution corrosion test device |
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| Publication Number | Publication Date |
|---|---|
| CN209784145U true CN209784145U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920167387.8U Expired - Fee Related CN209784145U (en) | 2019-01-31 | 2019-01-31 | Salt fog-salt solution corrosion test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323364A (en) * | 2020-04-21 | 2020-06-23 | 中国航发沈阳发动机研究所 | Thermal corrosion test device and method for homogenized deposited salt |
| CN112903573A (en) * | 2021-03-26 | 2021-06-04 | 中国第一汽车股份有限公司 | Bolt corrosion test fixing device |
| CN116221165A (en) * | 2023-03-13 | 2023-06-06 | 四川大学 | Test device for strong-corrosion airflow erosion test of centrifugal blower |
-
2019
- 2019-01-31 CN CN201920167387.8U patent/CN209784145U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323364A (en) * | 2020-04-21 | 2020-06-23 | 中国航发沈阳发动机研究所 | Thermal corrosion test device and method for homogenized deposited salt |
| CN112903573A (en) * | 2021-03-26 | 2021-06-04 | 中国第一汽车股份有限公司 | Bolt corrosion test fixing device |
| CN116221165A (en) * | 2023-03-13 | 2023-06-06 | 四川大学 | Test device for strong-corrosion airflow erosion test of centrifugal blower |
| CN116221165B (en) * | 2023-03-13 | 2024-03-15 | 四川大学 | Test device for strong-corrosion airflow erosion test of centrifugal blower |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 Termination date: 20210131 |
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| CF01 | Termination of patent right due to non-payment of annual fee |