CN208313780U - Salt spray test equipment - Google Patents
Salt spray test equipment Download PDFInfo
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- CN208313780U CN208313780U CN201820904943.0U CN201820904943U CN208313780U CN 208313780 U CN208313780 U CN 208313780U CN 201820904943 U CN201820904943 U CN 201820904943U CN 208313780 U CN208313780 U CN 208313780U
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Abstract
The utility model relates to a kind of salt spray test equipment, comprising: chamber, the chamber is equipped with the test cavity for accommodating measuring samples, and is additionally provided with controller in the chamber；Cooling assembly, the cooling assembly are set in the chamber and electricly connect with the controller, to regulate and control the test ambient temperature in the test cavity；And wind circulation mechanism, the wind circulation mechanism includes being opened in the circulation air path being connected in the chamber and with the test cavity and being set to the humidity regulation component in the chamber and being located in the circulation air path, and the humidity regulation component is also electricly connected with the controller.From there through the coordinated regulation of cooling assembly and humidity regulation component, environment temperature and air humidity in test cavity can flexibly be changed, the salt spray test equipment of the technical program is enabled to carry out compound salt spray test under different temperature and humidity environment, adjustability is good with uniformity, applied widely.
Description
Technical field
The utility model relates to salt mist experiment technical fields, more particularly to a kind of salt spray test equipment.
Background technique
Salt spray test be it is a kind of main using salt spray test equipment come artificial analog salt mist environmental condition with examine product or
The environmental test of metal material corrosion resistance, its purpose is to examine the resisting salt fog corrosion quality of product or metal material,
And salt spray test result judgement exactly pronounces product quality, whether its judgement result holds water, and is that correct measure produces
The key of product or metal salt fog resistance corrosion quality.Currently, carrying out correlation test usually using salt spray test chamber.
It is tried however, existing salt spray test chamber is usually only capable of under certain steady temperature and damp condition (room temperature)
It tests, temperature is non-adjustable and uniformity is poor；Meanwhile low temperature, high temperature or alternating temperature can not be carried out according to different product property or purposes
Compound (synthesis) salt spray test of environment, thus applicability is poor, experimental performance critical constraints.
Utility model content
Based on this, it is necessary to provide a kind of salt spray test equipment, can be answered under different temperature and humidity environment
Salt spray test is closed, adjustability is good with uniformity, applied widely.
Its technical solution is as follows:
A kind of salt spray test equipment, comprising:
Chamber, the chamber is equipped with the test cavity for accommodating measuring samples, and is additionally provided in the chamber
Controller；
Cooling assembly, the cooling assembly are set in the chamber and electricly connect, with the controller to adjust
Control the test ambient temperature in the test cavity；And
Wind circulation mechanism, the wind circulation mechanism include being opened in the chamber and following with what the test cavity was connected to
Ring air duct and the humidity regulation component for being set in the chamber and being located in the circulation air path, the humidity regulation group
Part is also electricly connected with the controller.
When being tested using above-mentioned salt spray test equipment, measuring samples are placed into test cavity, pass through control later
Parameter needed for device sets current test, can carry out test operation.And when the temperature and humidity parameter for needing to change experimental enviroment
When, controller can control cooling assembly and carry out heat exchange refrigeration, to precisely adjust the temperature value in test cavity；At the same time, it controls
Device processed can also synchronization modulation humidity regulation component, will fill in test cavity has the air of salt fog to be pumped into circulation air path and then to humidity
Value is completed after adjusting, and finally sends test cavity back to again.From there through the coordinated regulation of cooling assembly and humidity regulation component, Neng Gouling
It is living to change environment temperature and air humidity in test cavity, enable the salt spray test equipment of the technical program in different temperature
With compound salt spray test is carried out under humidity environment, adjustability is good with uniformity, applied widely.
The technical solution of the application is further described below:
The circulation air path includes air inlet in one of the embodiments, and the humidity regulation component includes being set to
It is driven on the inner wall of the chamber and with the actuator of controller electric connection and with the actuator close with merging
The wind driving body of the air inlet setting.
The circulation air path further includes return air inlet in one of the embodiments, and the humidity regulation component further includes setting
The evaporator for being placed on the inner wall of the chamber and being electrically connected with the controller, the evaporator are set to the wind and drive
Between kinetoplast and the return air inlet.
The wind circulation mechanism further includes that intake adjusts component in one of the embodiments, and the intake is adjusted
Component is set on the inner wall of the chamber, the openings of sizes to adjust the air inlet.
In one of the embodiments, the intake adjust component include cylinder, be set to the interior of the chamber
Guide rail on wall and door, the air quantity adjusting are adjusted with the air quantity of guide rail guiding cooperation with merging with cylinder driving
Openings of sizes of the door to adjust the air inlet.
In one of the embodiments, further include heat insulation element, the tank wall of the chamber offers thermal insulation cavity, it is described every
Warm part is filled in the thermal insulation cavity.
It in one of the embodiments, further include angle adjustment device, the angle adjustment device is described including being set to
The overturning actuator electricly connected in chamber and with the controller and the overturning peace with the overturning actuator driving cooperation
It shelves, the overturning mounting rack is used to adjust the tilt angle of the measuring samples.
It in one of the embodiments, further include salt spray generator, the salt spray generator includes salt water proportioner
Part, the salt water connected with salt water proportion device pipeline pump part and pump that part pipeline is connected with the salt water and be used for
It is the jet member of salt fog by saline water conversion；The salt water proportion device and salt water pumping part electrically connect with the controller
It connects.
The jet member is atomizer in one of the embodiments,.
The salt spray generator further includes the salt being set on the inner wall of the chamber in one of the embodiments,
Mist concentration sensor, the concentration of saline fog sensor are also communicated to connect with the controller.
Detailed description of the invention
Fig. 1 is the perspective structure schematic diagram of salt spray test equipment described in an embodiment of the present invention；
Fig. 2 is the side structure schematic view of equipment described in Fig. 1.
Description of symbols:
100, chamber, 110, test cavity, 120, controller, 200, cooling assembly, 300, wind circulation mechanism, 310, circulation
Air duct, 311, air inlet, 312, return air inlet, 320, humidity regulation component, 321, actuator, 322, wind driving body, 323, evaporation
Device, 400, heat insulation element, 500, angle adjustment device.
Specific embodiment
It is below in conjunction with attached drawing and specifically real for the purpose of this utility model, technical solution and advantage is more clearly understood
Mode is applied, the utility model is described in further detail.It should be understood that the specific embodiments described herein
Only to explain the utility model, the protection scope of the utility model is not limited.
It should be noted that when element is referred to as " being fixedly arranged on ", " being set to " or " install in " another element, it can be with
Directly on the other element or there may also be elements placed in the middle.When an element is considered as " connection " another yuan
Part, it can be directly to another element or may be simultaneously present centering elements；One element and another element
The concrete mode being fixedly connected can be achieved by the prior art, and details are not described herein, it is preferred to use the fixation side of threaded connection
Formula.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
" first " described in the utility model, " second " do not represent specific quantity and sequence, are only used for title
It distinguishes.
Through inquiry relevant criterion it is found that the principal element for influencing salt spray test result includes: test temperature and humidity, salting liquid
Concentration, sample placed angle, the pH value of salting liquid, salt fog settling amount and spray pattern etc..
1) temperature and humidity is tested.Temperature and relative humidity influence the corrosiveness of salt fog.The critical relative moisture of metal erosion
About 70%.When relative humidity meets or exceeds this critical humidity, deliquescence is formed the good electricity of electric conductivity by salt
Solve liquid.When relative humidity reduces, concentration of salt solution will be increased up precipitation crystal salt, and corrosion rate accordingly reduces.Test temperature
Higher salt fog corrosion rate is faster.International Electrotechnical Commission IEC60355:1971 " AN APPRAISAL OF THE PROBLEMS
OF ACCELERATED TESTING FOR ATMOSPHERIC CORROSION " standard points out: " temperature is every to increase 10 DEG C, rotten
It loses speed and improves 2~3 times, the conductivity of electrolyte increases by 10~20% ".This is because temperature increases, molecular motion aggravation is changed
Learn the result that reaction speed is accelerated.For neutral salt spray test, Most scholars think that test temperature is selected in 35 DEG C more appropriately.
If test temperature is excessively high, salt air corrosion mechanism and actual conditions difference are larger.
2) concentration of salting liquid.Influence of the concentration of salting liquid to corrosion rate is related with the type of material and coating.
Steel when concentration is below 5%, nickel, brass corrosion rate increase with the increase of concentration；When concentration is greater than 5%, these gold
The corrosion rate of category but declines with the increase of concentration.Above-mentioned this phenomenon can explain with the oxygen content in salting liquid,
Oxygen content in salting liquid is related with the concentration of salt, and in the low concentration range, oxygen content increases with the increase of salinity, but
It is that, when salinity increases to 5%, oxygen content reaches opposite saturation, if salinity continues growing, under corresponding if oxygen content
Drop.Oxygen content decline, the depolarising ability of oxygen also decline, i.e., corrosiveness weakens.But for the metals such as zinc, cadmium, copper, corrosion speed
Degree but increases with the increase of concentration of salt solution always.
3) sample placed angle.The placed angle of sample has a significant effect to the result of salt spray test.The sedimentation side of salt fog
To being close to vertical direction, when sample levels are placed, its projected area is maximum, and the salt fog amount that sample surfaces are born is also most
It is more, therefore corrode most serious.Result of study shows: when steel plate and horizontal line are at 45 degree of angles, every square metre of corrosion weight loss amount is
When 250g, steel plain and vertical lines run parallel, corrosion weight loss amount is every square metre of 140g.GB/T2423.17-93 standard regulation
" the laying method of tabular sample, it should make tested face with a vertical 30 degree of angles."
A number of factors that salt spray test result impacts may be considered based on above-mentioned, as depicted in figs. 1 and 2, for this
Apply show a kind of embodiment salt spray test equipment, comprising: chamber 100, the chamber 100 be equipped with for accommodate to
Controller 120 is additionally provided in the test cavities 110 of sample product and the chamber 100；Cooling assembly 200, the cooling assembly
200 are set in the chamber 100 and electricly connect with the controller 120, to regulate and control the examination in the test cavity 110
Test environment temperature；And wind circulation mechanism 300, the wind circulation mechanism 300 include be opened in the chamber 100 and with it is described
The circulation air path 310 and be set in the chamber 100 and be located at wet in the circulation air path 310 that test cavity 110 is connected to
Degree adjusts component 320, and the humidity regulation component 320 is also electricly connected with the controller 120.
When being tested using above-mentioned salt spray test equipment, measuring samples are placed into test cavity 110, pass through control later
Parameter needed for device 120 processed sets current test, can carry out test operation.And when the temperature and humidity for needing to change experimental enviroment
When parameter, controller 120 can control cooling assembly 200 and carry out heat exchange refrigeration, to precisely adjust the temperature in test cavity 110
Value；At the same time, controller 120 can also synchronization modulation humidity regulation component 320, will fill in test cavity 110 has the sky of salt fog
Gas is pumped into circulation air path 310 and then completes after adjusting to humidity value, test cavity 110 is finally sent back to again, from there through cooling assembly
200 and humidity regulation component 320 coordinated regulation, can flexibly change environment temperature and air humidity in test cavity 110 so that
The salt spray test equipment of the technical program can carry out compound salt spray test under different temperature and humidity environment, adjustability with
Uniformity is good, applied widely.
In the above-described embodiments, chamber 100 be rectangular metal cabinet, equipped with inlet/outlet, be easily installed or take out to
Sample product；And when carrying out testing inspection, it shall be guaranteed that the excellent sealing of test cavity 110, it is ensured that temperature in test cavity 110, wet
Degree keeps stablizing, Pass Test demand.
The structure and working principle of cooling assembly 200 can there are many, such as can be the refrigeration unit in air conditioner, can
Selection is realized in the prior art, is no longer elaborated herein.
In addition, the setting of wind circulation mechanism 300, which is appreciated that, to be installed additional in the structure basis of existing salt spray test chamber 100
One piece of functional structure specifically includes the shell being connected with 100 lateral end seal of chamber, and shell is interior to be separated out circulated air by wind deflector
Road 310, the structure of circulation air path 310 can be U-shaped, Z-type, S type etc.；The present embodiment specifically uses analog-U shaped structure.
Please continue to refer to Fig. 1, in an alternative embodiment, the circulation air path 310 includes air inlet 311, the humidity
Adjusting component 320 includes the actuator for being set on the inner wall of the chamber 100 and being electrically connected with the controller 120
321 and with the actuator 321 driving with merges close to the air inlet 311 be arranged wind driving body 322.In this way, when test
When the humidity to the air in test cavity 110 being needed to be adjusted in the process, 120 output order of controller is transported to actuator 321
Turn, rotated immediately by 321 synchronous drive wind driving body 322 of actuator, so as to which the air in test cavity 110 is introduced circulation
In air duct 310, so as to quick response so that air is contacted and is had an effect with humidity regulation component 320, complete humidity tune
Save operation.
Specifically, it is motor, such as stepper motor, servo motor etc. that actuator 321 is optional；Wind driving body 322 is optional to be
Centrifugal impeller has good air inducing effect when rotation, thus can fast implement the circulation of air in test cavity 110.
Please continue to refer to Fig. 1, further, the circulation air path 310 further includes return air inlet 312, the humidity regulation group
Part 320 further includes the evaporator 323 for being set on the inner wall of the chamber 100 and being electrically connected with the controller 120, institute
Evaporator 323 is stated to be set between the wind driving body 322 and the return air inlet 312.Thus pass through the setting of evaporator 323,
Enable the air introduced in circulation air path 310 to come into full contact with, react with evaporator 323, is effectively embedded in adjusting air
Moisture content, it is ensured that keep the air humidity for leading back test cavity 110 suitable, meet experimental condition requirement.
It should be noted that the water content (humidity) for adjusting air using evaporator 323 is only the one of the technical program
Other function component can also be used not to the limitation of the application protection scope in kind embodiment in other embodiments,
As long as can play the role of adjusting the humidity in (increasing or decreasing) test cavity 110 in air.
In another alternative embodiment, the wind circulation mechanism 300 further includes that intake adjusts component, the intake tune
Section component be set on the inner wall of the chamber 100, the openings of sizes to adjust the air inlet 311.In this way, by into
Air quantity adjusts the openings of sizes of component flexibly changing air inlet 311, i.e., introduces in circulation air path 310 in the adjusting unit time
The flow of salt fog air, namely the humidity size of salt fog air in the unit time is adjusted, and then co-evaporation device 323 together can
More preferably, the humidity environment in chamber 100 is more precisely adjusted, meets different tests requirement so as to simulate.
Specific in the present embodiment, the intake adjusts component (not shown) and includes cylinder and be set to described
Guide rail on the inner wall of chamber 100 and with cylinder driving with the air quantity adjusting door merged with guide rail guiding cooperation,
The air quantity adjusts openings of sizes of the door to adjust the air inlet 311.Thus control electric appliance can output signal to cylinder,
And then the stroke of the piston rod of cylinder is controlled, final regulation and control air quantity adjusts the masking amount size of door and air inlet 311, so that into
The aperture adjustability in air port 311 is good, controllability is high, easy to implement；The setting of the guide rail further makes air quantity adjust the reciprocal of door
Movement is more steady.
In view of environment temperature is affected to test result in test cavity 110, this requires chambers 100 to have
Standby preferable thermal insulation property, thus based on any of the above embodiments, salt spray test equipment further includes heat insulation element 400, institute
The tank wall for stating chamber 100 offers thermal insulation cavity, and the heat insulation element 400 is filled in the thermal insulation cavity.Specifically, it tests
Case 100 uses double layer box wall construction, the setting of two layers tank wall interval thus can form thermal insulation cavity, more preferably, the thermal insulation cavity
For vacuum chamber, thus it is arranged to the cavity structure of vacuum, has preferable thermal insulation effect；It of courses, thermal insulation cavity can not also
It is vacuum property.On this basis, the technical program is filled with heat insulation element 400 in thermal insulation cavity, can further be promoted
The heat insulation effect of chamber 100 effectively mitigates the temperature drop in test cavity 110 to the adverse effect of test result.Optionally, thermal insulation
Part 400 can be cystosepiment, heat-preservation cotton, Silica hydrogel etc..
In addition, it is contemplated that sample placed angle also can cause to significantly affect to test result, in any of the above-described embodiment
On the basis of, salt spray test equipment further includes angle adjustment device 500, and the angle adjustment device 500 includes being set to the examination
The overturning actuator 321 that is electricly connected in tryoff 100 and with the controller 120 and match with the overturning actuator 321 driving
The overturning mounting rack of conjunction, the overturning mounting rack are used to adjust the tilt angle of the measuring samples.Thus pass through controller 120
Regulation and control instruction is exported, so that the slow of speech enough driving overturning mounting racks of overturning actuator 321 are rotated, and then can precisely be adjusted to be checked
The placed angle of sample, to meet test requirements document, it is ensured that higher stringency of test.Specifically, overturning actuator 321 can be with
It is the device of the outputting rotary powers such as motor, oil cylinder, the structure and shape for overturning mounting rack can be multiplicity, as long as can fill
Clamping to determine measuring samples and driven synchronous rotary, technical scheme does not limit it specifically.
In another alternative embodiment, salt spray test equipment further includes salt spray generator (not shown), the salt
Mist generation device include salt water proportion device, with the salt water proportion device pipeline connect salt water pumping part and with the salt
Water pump send the jet member connection of part pipeline and for by saline water conversion being salt fog；The salt water proportion device and the brine pump
Part is sent to be electrically connected with the controller 120.In this way, the good salt water of pre-coordination is pumped by salt water in salt water proportion device
The power of part can be by pipeline reliable delivery to jet member at, finally by jet member by saline water conversion be salt fog (i.e. mist-like salt
Water) be ejected into test cavity 110, can build out good salt spray test environment, for test normal development provide it is good, must
The environmental basis wanted；Also, by the duration and rate of control injection, can also in flexible modulation test cavity 110 salt fog concentration,
To be suitable for the test demand of different measuring samples or experimental condition, versatility is good, applied widely.Specific to the present embodiment
In, the jet member is atomizer.With good atomizing effect, so that it is salt fog separation even particle size, appropriate, in turn
It can come into full contact with, merge, react with measuring samples, it is ensured that test mass.
In real work, need the concentration of saline fog in test cavity 110 constant when carrying out the test of certain measuring samples
When a certain numerical value, it is necessary to carry out dynamic regulation to the salt fog flow of injection.It is described in further carrying out example based on this
Salt spray generator further includes the concentration of saline fog sensor being set on the inner wall of the chamber 100, and the concentration of saline fog passes
Sensor is also communicated to connect with the controller 120.Thus concentration of saline fog sensor can be to the concentration of saline fog value in test cavity 110
It is monitored in real time and feedback data is to controller 120, filled so that controller 120 is enable to respond quickly and adjusts salt fog
The salt fog pump output set keeps the concentration of saline fog value in test cavity 110 accurately constant in required numerical value, meets test and want
It asks.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of salt spray test equipment characterized by comprising
Chamber, the chamber is equipped with the test cavity for accommodating measuring samples, and control is additionally provided in the chamber
Device；
Cooling assembly, the cooling assembly are set in the chamber and electricly connect, with the controller to regulate and control
State the test ambient temperature in test cavity；And
Wind circulation mechanism, the wind circulation mechanism include being opened in the circulated air being connected in the chamber and with the test cavity
Road and the humidity regulation component for being set in the chamber and being located in the circulation air path, the humidity regulation component is also
It is electricly connected with the controller.
2. salt spray test equipment according to claim 1, which is characterized in that the circulation air path includes air inlet, described
Humidity regulation component include be set on the inner wall of the chamber and with the controller be electrically connected actuator and with institute
Actuator driving is stated with the wind driving body merged close to air inlet setting.
3. salt spray test equipment according to claim 2, which is characterized in that the circulation air path further includes return air inlet, institute
Stating humidity regulation component further includes the evaporator for being set on the inner wall of the chamber and being electrically connected with the controller, institute
Evaporator is stated to be set between the wind driving body and the return air inlet.
4. salt spray test equipment according to claim 2, which is characterized in that the wind circulation mechanism further includes intake tune
Component is saved, the intake adjusting component is set on the inner wall of the chamber, the opening to adjust the air inlet is big
It is small.
5. salt spray test equipment according to claim 4, which is characterized in that the intake adjust component include cylinder,
With the guide rail on the inner wall for being set to the chamber and with cylinder driving with the wind merged with guide rail guiding cooperation
Amount adjusts door, and the air quantity adjusts openings of sizes of the door to adjust the air inlet.
6. salt spray test equipment according to any one of claims 1 to 5, which is characterized in that it further include heat insulation element, the examination
The tank wall of tryoff offers thermal insulation cavity, and the heat insulation element is filled in the thermal insulation cavity.
7. salt spray test equipment according to claim 6, which is characterized in that it further include angle adjustment device, the angle
Regulating device include be set in the chamber and the overturning actuator that is electricly connected with the controller and with the overturning
The overturning mounting rack of actuator driving cooperation, the overturning mounting rack are used to adjust the tilt angle of the measuring samples.
8. salt spray test equipment according to claim 7, which is characterized in that it further include salt spray generator, the salt fog
Generating device include salt water proportion device, with the salt water proportion device pipeline connect salt water pumping part and with the salt water
Pump jet member that part pipeline is connected and for by saline water conversion being salt fog；The salt water proportion device and salt water pumping
Part is electrically connected with the controller.
9. salt spray test equipment according to claim 8, which is characterized in that the jet member is atomizer.
10. salt spray test equipment according to claim 8, which is characterized in that the salt spray generator further includes setting
In the concentration of saline fog sensor on the inner wall of the chamber, the concentration of saline fog sensor also with the controller communication link
It connects.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820904943.0U CN208313780U (en) | 2018-06-11 | 2018-06-11 | Salt spray test equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820904943.0U CN208313780U (en) | 2018-06-11 | 2018-06-11 | Salt spray test equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488893A (en) * | 2019-07-10 | 2019-11-22 | 日立楼宇技术（广州）有限公司 | Salting liquid device for formulating prepares control method, device and computer equipment |
| CN113092743A (en) * | 2021-04-02 | 2021-07-09 | 中国建材检验认证集团北京天誉有限公司 | Cement product whiskering test equipment and whiskering degree detection method |
| CN113515157A (en) * | 2021-09-13 | 2021-10-19 | 中国电器科学研究院股份有限公司 | Environmental test equipment for salt spray concentration and relative humidity cooperative control |
-
2018
- 2018-06-11 CN CN201820904943.0U patent/CN208313780U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488893A (en) * | 2019-07-10 | 2019-11-22 | 日立楼宇技术（广州）有限公司 | Salting liquid device for formulating prepares control method, device and computer equipment |
| CN113092743A (en) * | 2021-04-02 | 2021-07-09 | 中国建材检验认证集团北京天誉有限公司 | Cement product whiskering test equipment and whiskering degree detection method |
| CN113092743B (en) * | 2021-04-02 | 2023-10-20 | 中国建材检验认证集团北京天誉有限公司 | Cement product whiskering test equipment and whiskering degree detection method |
| CN113515157A (en) * | 2021-09-13 | 2021-10-19 | 中国电器科学研究院股份有限公司 | Environmental test equipment for salt spray concentration and relative humidity cooperative control |
| CN113515157B (en) * | 2021-09-13 | 2021-11-30 | 中国电器科学研究院股份有限公司 | Environmental test equipment for salt spray concentration and relative humidity cooperative control |
| WO2023035410A1 (en) * | 2021-09-13 | 2023-03-16 | 中国电器科学研究院股份有限公司 | Environmental test equipment for collaborative control of salt spray concentration and relative humidity |
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