CN104020099A - Periodic soaking accelerated corrosion test system for metal material and metal protective coating and application thereof - Google Patents
Periodic soaking accelerated corrosion test system for metal material and metal protective coating and application thereof Download PDFInfo
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Abstract
Belonging to the field of metal corrosion and protection, the invention relates to a periodic soaking accelerated corrosion test system for metal materials and metal protective coatings and application thereof. The system is mainly for the accelerated corrosion test of metals and metal protective coatings, significantly improves test efficiency, shortens evaluation cycle of metals and the protective coatings. The system includes a working groove and a liquid storage tank. An axial flow fan, an infrared heating lamp, an infrared heating lamp hanger, a temperature sensor I, a sample, a sample holder and a double float ball liquid level sensor are arranged in the working groove; and a temperature sensor II and a heater are arranged in the liquid storage tank. An electrical control system, a chemical pump, a liquid inlet pipeline, a leakage pipe and a ball valve are arranged outside the working groove and the liquid storage tank. The invention has the advantages of simple structure, low cost, reliable performance and long service life, and can evaluate the corrosion resistance of the metals and the protective coatings in a relatively short period of time, and significantly improve the test efficiency.
Description
Technical field
The cycle that the present invention relates to a kind of metal material and metal protection coating is soaked accelerated corrosion test system and application, be mainly used in the accelerated corrosion test of metal and metal protection coating, obviously promoted test efficiency, shorten the evaluation cycle of metal and protective coating, belonged to corrosion of metal and protection field.
Background technology
The application of metal material is inseparable with our life.For the corrosion stability of certain metal of correct evaluation, alloy and metal protection coating thereof, the selection of corrosion test method is a very important problem.As everyone knows, the evaluation of certain metal and metal protection coating is needed to the quite a long time.How just can raise the efficiency, fast and accurately certain metal and metal protection coating to be made to evaluation in the short period of time, cause people's concern.Accelerated corrosion test method is exactly one and well selects.
At present, existing accelerated corrosion test equipment operating is comparatively loaded down with trivial details, and cost is higher, and exists air heat temperature uneven, and system for detecting temperature is not smart, and equipment self corrosion stability is poor, and corrosive medium solution is without many defects such as heating and temp measuring systems.The existence of these problems has caused the accuracy to metal and the evaluation of metal protection coating corrosion.
Summary of the invention
The object of this invention is to provide a kind of simple in structure, with low cost, dependable performance, the metal material of long service life and the cycle of metal protection coating soaks accelerated corrosion test system, can to the corrosion stability of metal and metal protection coating, make evaluation in the short period of time.
Technical scheme of the present invention is:
The cycle of a kind of metal and metal protection coating is soaked accelerated corrosion test system, this system comprises: work nest, reservoir, in work nest, be provided with aerofoil fan, heat lamp, heat lamp hanger, temperature sensor I, sample, specimen mounting and two float ball liquid level sensor switch, in reservoir, have temperature sensor II, well heater; Outside at work nest and reservoir, be provided with electric control system, chemical pump, input duct, and leakage pipeline and ball valve, its concrete structure is as follows:
Aerofoil fan is arranged at the upper cover bottom of work nest, heat lamp is arranged at the aerofoil fan below in work nest by heat lamp hanger, specimen mounting is arranged at the bottom in work nest with the sample that is installed on specimen mounting, leakage pipeline is installed in the bottom of work nest, work nest bottom communicates with the reservoir of its below by leakage pipeline, at leakage install pipeline ball valve, the top, side of work nest communicates with the inlet of input duct, work nest side communicates with the bottom, side of reservoir by input duct, and chemical pump is set in input duct;
Medial surface mounting temperature sensor I in work nest, two float ball liquid level sensor switch, temperature sensor I, two float ball liquid level sensor switches are positioned at the middle part of work nest medial surface; Well heater is set in reservoir, the medial surface mounting temperature sensor II in reservoir, temperature sensor II is positioned at the middle part of reservoir medial surface.
The cycle of described metal and metal protection coating is soaked accelerated corrosion test system, the output terminal of electric control system connects respectively: aerofoil fan, heat lamp, chemical pump, well heater, and the input end of electric control system connects respectively: temperature sensor I, temperature sensor II, two float ball liquid level sensor switch; Electric control system is controlled the start and stop of whole system, electric control system is controlled respectively aerofoil fan, heat lamp, temperature sensor I and the two float ball liquid level sensor switch in work nest, and temperature sensor II and well heater in reservoir, and outside chemical pump.
The cycle of described metal and metal protection coating is soaked accelerated corrosion test system, it is 8～12mm heatproof and corrosion-resistant PVC material that work nest and reservoir all adopt thickness, and is connected to become a solution recycle system by outside chemical pump, input duct, leakage pipeline and ball valve; The liquid inventory of inlet is controlled by chemical pump, and the flow of leakage pipeline is controlled by ball valve, and the two is coordinated mutually, guarantees to make at the appointed time the liquid level of solution to arrive the high float place of two float ball liquid level sensor switches.
The cycle of described metal and metal protection coating is soaked accelerated corrosion test system, and the inclination of 3～6 ° is arranged to centre from surrounding at the bottom of work nest, makes solution can flow back to faster reservoir.
The cycle of described metal and metal protection coating is soaked accelerated corrosion test system, and temperature sensor I, temperature sensor II, well heater all adopt the good titanium alloy material of corrosion stability, significantly improve serviceable life, and dependable performance; Wherein, temperature sensor I detects the air themperature that heat lamp offers work nest, and temperature sensor II detects the solution temperature that well heater offers reservoir.
Cycle of described metal and metal protection coating is soaked accelerated corrosion test system, and two float ball liquid level sensor switches adopt heatproof corrosion-resistant PVC materials, accurately control liquid level, and reduces etchant solution it is affected.
The cycle of described metal and metal protection coating is soaked accelerated corrosion test system, and work nest Axial-Flow fan and heat lamp, at a distance of 5～10cm, prevent that air heat is uneven; Liquid level, at a distance of 3～6cm, is accurately detected in two float ball liquid level sensor switches and sample top, guarantees the immersion completely of sample.
The cycle of described metal and metal protection coating is soaked accelerated corrosion test system, specimen mounting adopts the nylon rod that antiseptic property is good, intensity is high that diameter is 8～12mm, and the PVC case off that is 10～30mm with diameter between sample, prevents the impact of other corrosion factors except self corrosion of metal material and protective coating.
The cycle of described metal and metal protection coating is soaked the application of accelerated corrosion test system, and the using method of this system is as follows:
During use, be divided into two stages, the one, impregnation stage, another is drying stage; During on-test, the well heater that electric control system is controlled in reservoir is started working, and temperature sensor II detects solution temperature, and when solution is heated to preset temperature, well heater stops heating; When temperature sensor II detects solution temperature lower than preset value, electric control system again control heater is started working, and so forth; Then enter impregnation stage: chemical pump extracts solution and is injected in work nest in reservoir, the liquid inventory of inlet is controlled by chemical pump, the flow of leakage pipeline is controlled by ball valve, the two is coordinated mutually, guarantee to make at the appointed time solution to arrive the high float place of two float ball liquid level sensor switches, when liquid level arrives the high float of two float ball liquid level sensor switches, chemical pump quits work; Because leakage pipeline is always in seepage, so the liquid level in work nest can decline, until liquid level, during lower than the low float of two float ball liquid level sensor switches, chemical pump is started working, and so forth;
When sample was dipped into after the stipulated time, impregnation stage finishes; Drying stage starts thereupon: after treating that solution seepage in work nest completely, heat lamp and aerofoil fan are started working, until temperature sensor I detects air themperature in work nest while reaching preset value, heat lamp and aerofoil fan quit work, air themperature in work nest is during lower than preset value, heat lamp and aerofoil fan are started working again, and so forth; When sample was dried to after the stipulated time, drying stage finishes, and impregnation stage restarts again.
The cycle of described metal and metal protection coating is soaked the application of accelerated corrosion test system, electric control system comprises ebullator, water heating part, gas heating part, PLC and sensor, ebullator, water heating part, gas heating part and PLC power supply are all obtained from indoor three-phase/two-phase electricity, and probe power is obtained by Switching Power Supply;
During on-test, PLC output signal is started working water heating part, and PLC detects the temperature of water in real time by temperature sensor, and when water temp. heating arrives preset temperature, PLC stops water heating automatically; PLC controlled circulation pump operation after said process completes, and by two liquid level sensors, detect in real time high liquid level and the low liquid level position of the water surface, when water level arrives high liquid level, the normally opened contact that PLC detects two position sensor is all closed, and PLC stops pump operating cycle automatically; When water level is during lower than low liquid level, the normally opened contact that PLC detects two position sensor all disconnects, the PLC pump operation that resets automatically, and so forth;
After said process completes, water heating and pump quit work automatically; PLC automatically starts air heat and starts working, and after air heat 1-10 minute, PLC starts fan work automatically; PLC detects air themperature in real time by temperature sensor, and when air heat arrives preset temperature, PLC stops air heat automatically; In default air heat, in the time, if current air themperature is less than the startup heating-up temperature of setting, PLC starts air heat automatically, if when current air themperature is greater than the startup heating-up temperature of setting, PLC stops air heat automatically, and so forth; When this process operation is to the setting-up time of system air bringing-up section, PLC stops air heat and fan operation automatically;
All processes complete after default cycle index above, or during certain process there is mistake, the bright and PLC of system failure pilot lamp stops whole system automatically.
Advantage of the present invention and beneficial effect are:
1, the present invention is simple in structure, dismounting and easy to maintenance, and with low cost.
2, the heat lamp in work nest of the present invention and aerofoil fan cooperating, the convection current that can produce hot-air in work nest, improves the too high problem of air heat local temperature.
3, in reservoir of the present invention, well heater heats corrosive medium, can set according to requirement of experiment temperature requiredly, has improved the problem that corrosive medium can not heat.
4, reservoir of the present invention and work nest adopt split-type design, are convenient to reservoir and change or add corrosive medium.
5, whole system of the present invention is all to be made by the good material of corrosion resisting property, and dependable performance, has improved serviceable life greatly.
6, the present invention can be at one time, multiple print corrode and accelerates to test in same corrosive medium, can to the corrosion stability of metal and protective coating, make accurate evaluation in the short period of time, significantly improve test efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Reference numeral in figure: 1 electric control system; 2 work nests; 3 aerofoil fans; 4 heat lamps; 5 heat lamp hangers; 6 inlets; 7 temperature sensor I; 8 input duct; 9 temperature sensor II; 10 chemical pumps; 11 ball valves; 12 leakage pipelines; 13 well heaters; 14 reservoirs; 15 specimen mountings; 16 samples; 17 pairs of float ball liquid level sensor switches.
Fig. 2-Fig. 3 is electric control system circuit theory diagrams of the present invention.Wherein, Fig. 2 is power unit; Fig. 3 is PLC control section.
Fig. 4 is for adopting maximum pit depth of the present invention and time curve.
Fig. 5 is for adopting the average spot corrosion number of the present invention and time curve.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described further.
As shown in Figure 1, the structure that the cycle of metal material of the present invention and metal protection coating is soaked accelerated corrosion test system mainly comprises: electric control system 1, work nest 2, aerofoil fan 3, heat lamp 4, heat lamp hanger 5, inlet 6, temperature sensor I 7, input duct 8, temperature sensor II 9, chemical pump 10, ball valve 11, leakage pipeline 12, well heater 13, reservoir 14, specimen mounting 15, sample 16, two float ball liquid level sensor switches 17 etc., in work nest 2, be provided with aerofoil fan 3, heat lamp 4, heat lamp hanger 5, temperature sensor I 7, sample 16, specimen mounting 15 and two float ball liquid level sensor switch 17, in reservoir 14, there is temperature sensor II 9, well heater 13.In work nest 2 and reservoir 14 outsides, be provided with electric control system 1, chemical pump 10, input duct 8, and leakage pipeline 12 and ball valve 11.Its concrete structure is as follows:
Aerofoil fan 3 is arranged at the upper cover bottom of work nest 2, heat lamp 4 is arranged at aerofoil fan 3 belows in work nest 2 by heat lamp hanger 5, specimen mounting 15 is arranged at the bottom in work nest 2 with the sample 16 that is installed on specimen mounting 15, leakage pipeline 12 is installed in the bottom of work nest 2, work nest 2 bottoms communicate with the reservoir 14 of its below by leakage pipeline 12, at leakage pipeline 12, ball valve 11 is set, the top, side of work nest 2 communicates with the inlet 6 of input duct 8, work nest 2 sides communicate with the bottom, side of reservoir 14 by input duct 8, chemical pump 10 is set in input duct 8.
Medial surface mounting temperature sensor I 7 in work nest 2, two float ball liquid level sensor switch 17, temperature sensor I 7, two float ball liquid level sensor switches 17 are positioned at the middle part of work nest 2 medial surfaces.Well heater 13 is set in reservoir 14, the medial surface mounting temperature sensor II 9 in reservoir 14, temperature sensor II 9 is positioned at the middle part of reservoir 14 medial surfaces.
Electric control system 1 is controlled the start and stop of whole system, electric control system 1 is controlled respectively: the aerofoil fan 3 in work nest 2, heat lamp 4, temperature sensor I 7 and two float ball liquid level sensor switch 17, and the temperature sensor II 9 in reservoir 14, well heater 13, and outside chemical pump 10.The output terminal of electric control system 1 connects respectively: aerofoil fan 3, heat lamp 4, chemical pump 10, well heater 13, the input end of electric control system 1 connects respectively: temperature sensor I 7, temperature sensor II 9, two float ball liquid level sensor switch 17.The robotization that adopts electric-control system can realize test is controlled, and easy and simple to handle.
It is 10mm heatproof and corrosion-resistant PVC material that work nest 2 and reservoir 14 all adopt thickness, and is connected to become a solution recycle system by outside chemical pump 10, input duct 8, leakage pipeline 12 and ball valve 11.The liquid inventory of inlet 6 is controlled by chemical pump 10, and the flow of leakage pipeline 12 is controlled by ball valve 11, and the two is coordinated mutually, guarantees to make at the appointed time the liquid level of solution to arrive the high float place of two float ball liquid level sensor switches 17.The inclination of 5 ° is arranged to centre from surrounding at the bottom of work nest 2, makes solution can flow back to faster reservoir 14, reduces the loss of solution as far as possible.
Temperature sensor I 7, temperature sensor II 9, well heater 13 all adopt the good titanium alloy material of corrosion stability, have significantly improved serviceable life, and dependable performance.Wherein temperature sensor I 7 detects the air themperature that heat lamp 4 offers work nest 2, and temperature sensor II 9 detects the solution temperature that well heater 13 offers reservoir 14.Two float ball liquid level sensor switches 17 adopt heatproof corrosion-resistant PVC materials, can accurately control liquid level, and reduce etchant solution it is affected.
Work nest 2 Axial-Flow fans 3 at a distance of 8cm, solve the problem of air heat inequality with heat lamp 4.Two float ball liquid level sensor switches 17 at a distance of 5cm, accurately detect liquid level with sample 16 tops, guarantee the immersion completely of sample 16.
Specimen mounting 15 adopts the nylon rod that antiseptic property is good, intensity is high that diameters are 10mm, and the PVC case off that is 20mm with diameter between sample 16, has effectively prevented the impact of other corrosion factors except self the corroding of metal material and protective coating.
As shown in Fig. 2-Fig. 3, electric control system principle of the present invention is as follows:
As shown in Figure 2, electric control system comprises ebullator, water heating part, gas heating part, PLC and sensor, ebullator, water heating part, gas heating part and PLC power supply are all obtained from indoor three-phase/two-phase electricity, and probe power is obtained by Switching Power Supply.
As shown in Figure 3, during on-test, PLC output signal is started working water heating part, and PLC detects the temperature of water in real time by temperature sensor, and when water temp. heating arrives preset temperature, PLC stops water heating automatically.PLC controlled circulation pump operation after said process completes, and by two liquid level sensors, detect in real time high liquid level and the low liquid level position of the water surface, when water level arrives high liquid level, the normally opened contact that PLC detects two position sensor is all closed, and PLC stops pump operating cycle automatically; When water level is during lower than low liquid level, the normally opened contact that PLC detects two position sensor all disconnects, the PLC pump operation that resets automatically, and so forth.
After said process completes, water heating and pump quit work automatically.PLC automatically starts air heat and starts working, and after air heat 1-10 minute, PLC starts fan work automatically.PLC detects air themperature in real time by temperature sensor, and when air heat arrives preset temperature, PLC stops air heat automatically.In default air heat, in the time, if current air themperature is less than the startup heating-up temperature of setting, PLC starts air heat automatically, if when current air themperature is greater than the startup heating-up temperature of setting, PLC stops air heat automatically, and so forth.When this process operation is to the setting-up time of system air bringing-up section, PLC stops air heat and fan operation automatically.
All processes complete after default cycle index above, or during certain process there is mistake, the bright and PLC of system failure pilot lamp stops whole system automatically.
Using method of the present invention is as follows:
While soaking the use of accelerated corrosion test system in the cycle of the present invention, be divided into two stages, the one, impregnation stage, another is drying stage.During on-test, the well heater 13 that electric control system 1 is controlled in reservoir 14 is started working, and temperature sensor II 9 detects solution temperature, and when solution is heated to preset temperature, well heater 13 stops heating.When temperature sensor II 9 detects solution temperature lower than preset value, electric control system 1 again control heater 13 is started working, and so forth.Then enter impregnation stage: chemical pump 10 extracts solution and is injected in work nest 2 in reservoir 14, the liquid inventory of inlet 6 is controlled by chemical pump 10, the flow of leakage pipeline 12 is controlled by ball valve 11, the two is coordinated mutually, guarantee to make at the appointed time solution to arrive the high float place of two float ball liquid level sensor switches 17, when liquid level arrives the high float of two float ball liquid level sensor switches 17, chemical pump 10 quits work.Because leakage pipeline 12 is always in seepage, so the liquid level in work nest 2 can decline, until liquid level, during lower than the low float of two float ball liquid level sensor switches 17, chemical pump 10 is started working, and so forth.
When sample 16 was dipped into after the stipulated time, impregnation stage finishes.Drying stage starts thereupon: after treating that solution seepage in work nest 2 completely, heat lamp 4 is started working with aerofoil fan 3, until temperature sensor I 7 detects air themperature in work nest 2 while reaching preset value, heat lamp 4 quits work with aerofoil fan 3, air themperature in work nest 2 is during lower than preset value, heat lamp 4 is started working with aerofoil fan 3 again, and so forth.When sample 16 was dried to after the stipulated time, drying stage finishes.Impregnation stage restarts again.
Embodiment:
Choose two kinds of aluminium alloys 5083 and 6061,10, every kind of parallel sample of aluminium alloy, print specification: 200mm * 100mm * 5mm, through SiC waterproof abrasive paper, polish step by step to 2000#, then with mechanical buffing to without obvious cut, after use use after deionized water rinsing 10 minutes, it is residual that hair dryer dries up surperficial drop.
The sample that pre-treatment is complete packs specimen mounting into, puts into test flume.Corrosive medium solution adopts 3.5wt%NaCl solution.
Process of the test: by the PLC setting data of programming, 30 ± 2 ℃ of corrosive medium solution temperatures, print soak time 10 minutes, 2 minutes corrosive medium seepage time, 48 minutes drying times of print, 55 ± 2 ℃ of baking temperatures.It is that air heat started after 1 minute that print starts dry, starting fan work.During on-test, PLC output signal starts working water heater to be corrosive medium solution to start heating, and PLC detects the temperature of corrosive medium solution in real time by temperature sensor, and to be heated during to 30 ± 2 ℃, PLC stops the heating of corrosive medium solution automatically.PLC controlled circulation pump operation detect in real time high liquid level and the low liquid level position of the water surface by two liquid level sensors after said process completes, when water level arrives high liquid level, the normally opened contact that PLC detects two position sensor is all closed, and PLC stops pump operating cycle automatically; When water level is during lower than low liquid level, the normally opened contact that PLC detects two position sensor all disconnects, and the PLC pump operation that resets automatically, continues 10 minutes and so forth.
After said process completes, PLC controls water heating automatically and pump quits work automatically.Then corrosive medium seepage is after 2 minutes, and it is drying stage that PLC starts that air heat starts working automatically, and in air heat, after 1 minute, PLC starts fan work automatically.PLC detects air themperature in real time by temperature sensor, and when air heat to 55 ± 2 ℃, PLC stops air heat automatically.In drying stage, if current air themperature is less than 55 ± 2 ℃, PLC starts air heat automatically, if when current air themperature is greater than 55 ± 2 ℃, PLC stops air heat automatically, and so forth.After this process operation to 48 minute, PLC stops air heat and fan operation automatically.
Be more than a circulation of the present embodiment test, this time test moves 2160 hours altogether.
Test figure is referring to Fig. 4 (maximum pit depth and time curve) and Fig. 5 (average spot corrosion number and time curve), test findings: by the test figure of the present embodiment, can significantly find out that the maximum pit depth of 6061 aluminium alloys in 3.5wt%NaCl corrosive medium solution and the average spot corrosion number of every square meter are obviously greater than 5083 aluminium alloys.
Embodiment result shows, the present invention is simple in structure, with low cost, dependable performance, and long service life, can make evaluation to the corrosion stability of metal and protective coating in the short period of time, significantly improves test efficiency.
Claims (10)
1. the cycle of a metal and metal protection coating is soaked accelerated corrosion test system, it is characterized in that, this system comprises: work nest (2), reservoir (14), in work nest (2), be provided with aerofoil fan (3), heat lamp (4), heat lamp hanger (5), temperature sensor I (7), sample (16), specimen mounting (15) and two float ball liquid level sensor switch (17), in reservoir (14), have temperature sensor II (9), well heater (13); In work nest (2) and reservoir (14) outside, be provided with electric control system (1), chemical pump (10), input duct (8), and leakage pipeline (12) and ball valve (11), its concrete structure is as follows:
Aerofoil fan (3) is arranged at the upper cover bottom of work nest (2), heat lamp (4) is arranged at aerofoil fan (3) below in work nest (2) by heat lamp hanger (5), specimen mounting (15) and the sample (16) that is installed on specimen mounting (15) are arranged at the bottom in work nest (2), leakage pipeline (12) is installed in the bottom of work nest (2), work nest (2) bottom communicates with the reservoir (14) of its below by leakage pipeline (12), at leakage pipeline (12), ball valve (11) is set, the top, side of work nest (2) communicates with the inlet (6) of input duct (8), work nest (2) side communicates with the bottom, side of reservoir (14) by input duct (8), chemical pump (10) is set in input duct (8),
Medial surface mounting temperature sensor I (7) in work nest (2), two float ball liquid level sensor switch (17), temperature sensor I (7), two float ball liquid level sensor switch (17) are positioned at the middle part of work nest (2) medial surface; Well heater (13) is set in reservoir (14), the medial surface mounting temperature sensor II (9) in reservoir (14), temperature sensor II (9) is positioned at the middle part of reservoir (14) medial surface.
2. according to the cycle of metal claimed in claim 1 and metal protection coating, soak accelerated corrosion test system, it is characterized in that, the output terminal of electric control system (1) connects respectively: aerofoil fan (3), heat lamp (4), chemical pump (10), well heater (13), and the input end of electric control system (1) connects respectively: temperature sensor I (7), temperature sensor II (9), two float ball liquid level sensor switch (17); Electric control system (1) is controlled the start and stop of whole system, electric control system (1) is controlled respectively aerofoil fan (3), heat lamp (4), temperature sensor I (7) and the two float ball liquid level sensor switch (17) in work nest (2), and the temperature sensor II (9) in reservoir (14) and well heater (13), and outside chemical pump (10).
3. according to the cycle of metal claimed in claim 1 and metal protection coating, soak accelerated corrosion test system, it is characterized in that, it is 8～12mm heatproof and corrosion-resistant PVC material that work nest (2) and reservoir (14) all adopt thickness, and is connected to become a solution recycle system by outside chemical pump (10), input duct (8), leakage pipeline (12) and ball valve (11); The liquid inventory of inlet (6) is controlled by chemical pump (10), the flow of leakage pipeline (12) is controlled by ball valve (11), the two is coordinated mutually, guarantees to make at the appointed time the liquid level of solution to arrive the high float place of two float ball liquid level sensor switches (17).
4. according to the cycle of metal claimed in claim 1 and metal protection coating, soak accelerated corrosion test system, it is characterized in that, the inclination of 3～6 ° is arranged to centre from surrounding at the bottom of work nest (2), makes solution can flow back to faster reservoir (14).
5. according to the cycle of metal claimed in claim 1 and metal protection coating, soak accelerated corrosion test system, it is characterized in that, temperature sensor I (7), temperature sensor II (9), well heater (13) all adopt the good titanium alloy material of corrosion stability, significantly improve serviceable life, and dependable performance; Wherein, temperature sensor I (7) detects the air themperature that heat lamp (4) offers work nest (2), and temperature sensor II (9) detects the solution temperature that well heater (13) offers reservoir (14).
6. according to the cycle of metal claimed in claim 1 and metal protection coating, soak accelerated corrosion test system, it is characterized in that, two float ball liquid level sensor switches (17) adopt heatproof corrosion-resistant PVC material, accurately control liquid level, and reduce etchant solution it is affected.
7. according to the cycle of metal claimed in claim 1 and metal protection coating, soak accelerated corrosion test system, it is characterized in that, work nest (2) Axial-Flow fan (3) at a distance of 5～10cm, prevents that air heat is uneven with heat lamp (4); Two float ball liquid level sensor switches (17) at a distance of 3～6cm, accurately detect liquid level with sample (16) top, guarantee the immersion completely of sample (16).
8. according to the cycle of metal claimed in claim 1 and metal protection coating, soak accelerated corrosion test system, it is characterized in that, specimen mounting (15) adopts the nylon rod that antiseptic property is good, intensity is high that diameter is 8～12mm, and the PVC case off that is 10～30mm with diameter between sample (16), prevents the impact of other corrosion factors except self corrosion of metal material and protective coating.
9. the cycle of metal claimed in claim 1 and metal protection coating is soaked an application for accelerated corrosion test system, it is characterized in that, the using method of this system is as follows:
During use, be divided into two stages, the one, impregnation stage, another is drying stage; During on-test, the well heater (13) that electric control system (1) is controlled in reservoir (14) is started working, and temperature sensor II (9) detects solution temperature, and when solution is heated to preset temperature, well heater (13) stops heating; When temperature sensor II (9) detects solution temperature lower than preset value, electric control system (1) again control heater (13) is started working, and so forth; Then enter impregnation stage: chemical pump (10) extracts solution and is injected in work nest (2) in reservoir (14), the liquid inventory of inlet (6) is controlled by chemical pump (10), the flow of leakage pipeline (12) is controlled by ball valve (11), the two is coordinated mutually, guarantee to make at the appointed time solution to arrive the high float place of two float ball liquid level sensor switches (17), when liquid level arrives the high float of two float ball liquid level sensor switches (17), chemical pump (10) quits work; Because leakage pipeline (12) is always in seepage, so the liquid level in work nest (2) can decline, until liquid level, during lower than the low float of two float ball liquid level sensor switches (17), chemical pump (10) is started working, and so forth;
When sample (16) was dipped into after the stipulated time, impregnation stage finishes; Drying stage starts thereupon: after treating that solution seepage in work nest (2) completely, heat lamp (4) is started working with aerofoil fan (3), until temperature sensor I (7) detects air themperature in work nest (2) while reaching preset value, heat lamp (4) quits work with aerofoil fan (3), air themperature in work nest (2) is during lower than preset value, heat lamp (4) is started working with aerofoil fan (3) again, and so forth; When sample (16) was dried to after the stipulated time, drying stage finishes, and impregnation stage restarts again.
10. according to the cycle of metal claimed in claim 9 and metal protection coating, soak the application of accelerated corrosion test system, it is characterized in that, electric control system comprises ebullator, water heating part, gas heating part, PLC and sensor, ebullator, water heating part, gas heating part and PLC power supply are all obtained from indoor three-phase/two-phase electricity, and probe power is obtained by Switching Power Supply;
During on-test, PLC output signal is started working water heating part, and PLC detects the temperature of water in real time by temperature sensor, and when water temp. heating arrives preset temperature, PLC stops water heating automatically; PLC controlled circulation pump operation after said process completes, and by two liquid level sensors, detect in real time high liquid level and the low liquid level position of the water surface, when water level arrives high liquid level, the normally opened contact that PLC detects two position sensor is all closed, and PLC stops pump operating cycle automatically; When water level is during lower than low liquid level, the normally opened contact that PLC detects two position sensor all disconnects, the PLC pump operation that resets automatically, and so forth;
After said process completes, water heating and pump quit work automatically; PLC automatically starts air heat and starts working, and after air heat 1-10 minute, PLC starts fan work automatically; PLC detects air themperature in real time by temperature sensor, and when air heat arrives preset temperature, PLC stops air heat automatically; In default air heat, in the time, if current air themperature is less than the startup heating-up temperature of setting, PLC starts air heat automatically, if when current air themperature is greater than the startup heating-up temperature of setting, PLC stops air heat automatically, and so forth; When this process operation is to the setting-up time of system air bringing-up section, PLC stops air heat and fan operation automatically;
All processes complete after default cycle index above, or during certain process there is mistake, the bright and PLC of system failure pilot lamp stops whole system automatically.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104460743A (en) * | 2014-11-11 | 2015-03-25 | 南京钢铁股份有限公司 | Lifting type periodic dipping/drying circulation corrosion experimental temperature uniformity control method |
| CN104865180A (en) * | 2015-05-04 | 2015-08-26 | 徐州工程学院 | Concrete structure durability research test device and method in corrosive environment |
| CN106018252A (en) * | 2016-06-30 | 2016-10-12 | 中国航空工业标准件制造有限责任公司 | Multifunctional numerical-control stress corrosion instrument |
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| CN104865180A (en) * | 2015-05-04 | 2015-08-26 | 徐州工程学院 | Concrete structure durability research test device and method in corrosive environment |
| JP2017194377A (en) * | 2016-04-21 | 2017-10-26 | 日本電信電話株式会社 | Corrosion test method and corrosion test device |
| CN106018252A (en) * | 2016-06-30 | 2016-10-12 | 中国航空工业标准件制造有限责任公司 | Multifunctional numerical-control stress corrosion instrument |
| CN107815687A (en) * | 2017-10-17 | 2018-03-20 | 江苏沪运制版有限公司 | Copper chloride corrosive liquid regenerating unit |
| CN107741370A (en) * | 2017-11-15 | 2018-02-27 | 中国科学院金属研究所 | A kind of constant temperature and humidity circulation solution week leaching experimental rig and its application method |
| CN108051278A (en) * | 2017-11-28 | 2018-05-18 | 上海航天精密机械研究所 | Steel curved beam etching pit device |
| CN108169110A (en) * | 2017-12-22 | 2018-06-15 | 重庆瑜煌电力设备制造有限公司 | A kind of period soaking corrosion circulation testing machine and its period soaking corrosion cyclic test method |
| CN109100297A (en) * | 2018-08-10 | 2018-12-28 | 西南交通大学 | The corrosive liquid temperature control equipment and control method of liner structure accelerated corrosion test |
| CN109323980A (en) * | 2018-09-20 | 2019-02-12 | 河海大学 | A kind of bathtub test device of the alternation temperature difference |
| CN109323980B (en) * | 2018-09-20 | 2021-02-12 | 河海大学 | Water bath test device of reversal difference in temperature |
| CN109298062A (en) * | 2018-11-02 | 2019-02-01 | 山东建筑大学 | A kind of material sound state of paddling impregnates the detection device and method of water test |
| CN109298062B (en) * | 2018-11-02 | 2024-06-07 | 山东建筑大学 | Detection device and method for dynamic and static soaking water test of wading material |
| CN109540776A (en) * | 2018-12-29 | 2019-03-29 | 天津大学 | A kind of high temperature accelerated corrosion test device and method |
| CN110779856A (en) * | 2019-11-20 | 2020-02-11 | 中国核动力研究设计院 | Sample installation device and method for lead-bismuth alloy melt corrosion test |
| CN110779856B (en) * | 2019-11-20 | 2022-05-20 | 中国核动力研究设计院 | Sample installation device and method for lead-bismuth alloy melt corrosion test |
| CN113073365A (en) * | 2021-03-25 | 2021-07-06 | 北京冬曦既驾科技咨询有限公司 | High-corrosion-resistance magnesium alloy electroplated layer and preparation method thereof |
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