JP2007206017A - Corrosion testing device and corrosion testing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a corrosion testing device capable of testing the corrosiveness of a test target under an environment near to the actual natural environment, and a corrosion testing method. <P>SOLUTION: The corrosion testing device 1 is constituted so that the test target is brought into contact with a corrosive liquid while fed by a feeder 3 and dried, brought into contact with water or frozen to test the corrosiveness of the test target. A corrosion liquid contact device 4 is constituted so as to drop or spray the corrosion liquid on the test target and a dryer 5 is constituted so as to blow hot air against the test target to dry test target. A water contact device 6 is constituted so as to drop or spray water on the test target and an irradiation device 7 irradiates the test target with light (electromagnetic wave) such as infrared lays or ultraviolet lays. A freezing device 8 cools or freezes the test target a setting device 9 is operated by the examiner when a testing condition and/or a testing time is set while a control device 11 controls respective operations so as to reproduce the same environment as the actual natural environment. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a corrosion test apparatus and a corrosion test method for testing the corrosion resistance of a test object.

FIG. 8 is a block diagram schematically showing a conventional corrosion test apparatus, FIG. 8 (A) is a block diagram of a salt spray test apparatus, and FIG. 8 (B) is a block diagram of a liquid immersion test apparatus. .
Corrosion-resistant materials must be used for the trolley wires that contact the current collectors (pantographs) of railway vehicles such as electric cars and the train wire fittings that support the trolley wires. For this reason, when developing new trolley wires, train wire fittings, etc., a salt spray test method (JIS Z 2371) using a salt spray test device or a liquid immersion test immersed in a corrosive solution (material is a copper-based material) Sometimes it is necessary to evaluate the material by a time cracking test using ammonia water or the like specified in JIS K 8085. For example, the nozzle conventional salt spray test apparatus 101 includes a container 102 for accommodating the test object (specimen) T, for spraying a tank 103 for accommodating the water L _10, salt water L ₁₀ shown in Figure 8 (A) 104, a pipe 105 for supplying the salt water L ₁₀ from the tank 103 to the nozzle 104, a pump 106 for sending the salt water L ₁₀ from the tank 103 to the nozzle 104, and the like. Further, conventional liquid immersion test apparatus 201 shown in FIG. 8 (B) is provided with a tank 202 for accommodating the test object (specimen) T and the liquid L _20. In such a conventional corrosion test, characteristics such as easy determination of corrosion, evaluation in a short time, simple equipment, and the same result as an actual field are required.

  A conventional environment reproduction system includes an environment measurement unit that measures the environment of a target location, a data storage unit that stores environment measurement data measured by the environment measurement unit, and environment measurement data that is stored in the data storage unit. An environment reproduction unit that reads and reproduces the environment of the target location is provided (for example, see Patent Document 1). In such a conventional environment reproduction system, the temperature, humidity and wind speed of the target location are measured by the temperature sensor, humidity sensor and wind speed sensor of the environment measurement unit, and the air conditioning apparatus, dehumidifying / humidifying device and fan of the environment reproduction unit are measured. The environment measured by the environment measurement unit is reproduced.

Japanese Unexamined Patent Publication No. 4-367744

  In the conventional environment reproduction system, the local natural environment can be reproduced by the environment reproduction unit, but the reproducible environment is limited to weather conditions such as temperature and humidity. For this reason, the conventional environment reproduction system has a problem that an environment close to an actual natural environment affected by corrosion or freezing cannot be reproduced with high accuracy.

  An object of the present invention is to provide a corrosion test apparatus and a corrosion test method capable of testing the corrosion resistance of a test object in an environment close to an actual natural environment.

The present invention solves the above-mentioned problems by the solving means described below.
In addition, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this embodiment.
The invention of claim 1 is a corrosion test apparatus for testing the corrosion resistance of the test object (T), the corrosive liquid contact means (4) for bringing the test object into contact with the corrosive liquid (L ₁ ), A corrosion test apparatus (1) comprising a freezing means (8) for freezing a test object and a control means (11) for controlling the operation of the corrosive liquid contact means and the operation of the freezing means.

A second aspect of the present invention is the corrosion test apparatus according to the first aspect, further comprising water contact means (6) for bringing the test object into contact with water (L ₂ ), wherein the control means is the water contact means. It is a corrosion test apparatus characterized by controlling the operation of

The invention of claim 3 is a corrosion test apparatus for testing the corrosion resistance of the test object (T), the corrosion liquid contact means (4) for bringing the test object into contact with the corrosion liquid (L ₁ ), Corrosion test apparatus (6) comprising a water contact means (6) for bringing the test object into contact with water (L ₂ ), and a control means (11) for controlling the operation of the corrosive liquid contact means and the operation of the water contact means. 1).

  A fourth aspect of the present invention is the corrosion test apparatus according to any one of the first to third aspects, further comprising a drying unit (5) for drying the test object, wherein the control unit includes the drying unit. It is a corrosion test apparatus characterized by controlling the operation of the means.

  The invention according to claim 5 is the corrosion test apparatus according to claim 4, wherein the drying means dries the test object at 60 to 100 ° C.

A sixth aspect of the present invention is the corrosion test apparatus according to any one of the first to fifth aspects, further comprising irradiation means (7) for irradiating the test object with light (L ₃ ), The control means is a corrosion test apparatus characterized by controlling the operation of the irradiation means.

  The invention according to claim 7 is the corrosion test apparatus according to any one of claims 1 to 6, wherein the control means controls each operation so as to reproduce the same environment as an actual natural environment. This is a corrosion test apparatus.

  According to an eighth aspect of the present invention, in the corrosion test apparatus according to the seventh aspect, the control means controls each of the operations so as to reproduce the actual natural environment for one year in a shorter time than the actual time. This is a corrosion test apparatus characterized by the above.

The invention of claim 9 is a corrosion test method for testing the corrosion resistance of the test object (T), wherein the test object and the corrosive liquid (L ₁ ) are brought into contact with a corrosive liquid contacting step (# 110, # 150). ) And a freezing step (# 160) in which the test object is frozen after the corrosive liquid contacting step (# 100).

The invention of claim 10 is the corrosion test method according to claim 9, further comprising a water contact step (# 140) for bringing the test object into contact with water (L ₂ ). is there.

The invention of claim 11 is a corrosion test method for testing the corrosion resistance of the test object (T), wherein the test object and the corrosive liquid (L ₁ ) are contacted with a corrosive liquid contacting step (# 110), It is a corrosion test method (# 100) including a water contact step (# 140) for bringing the test object into contact with water (L ₂ ) after the corrosive liquid contact step.

  The invention of claim 12 includes a drying step (# 120) of drying the test object after the step of contacting the corrosive liquid in the corrosion test method according to any one of claims 9 to 11. Is a corrosion test method characterized by

  A thirteenth aspect of the present invention is the corrosion test method according to the twelfth aspect, wherein the drying step includes a step of drying the test object at 60 to 100 ° C.

The invention of claim 14 is the corrosion test method according to claim 12 or claim 13, further comprising an irradiation step (# 130) of irradiating the test object with light (L ₃ ) after the drying step. This is a corrosion test method.

  The invention of claim 15 is the corrosion test method according to any one of claims 9 to 14, wherein each step is reproduced so as to be in the same environment as an actual natural environment. This is a corrosion test method.

  According to a sixteenth aspect of the present invention, in the corrosion test method according to the fifteenth aspect, in each step, the actual natural environment for one year is reproduced in a shorter time than the actual time. It is.

  According to this invention, the corrosion resistance of the test object can be tested in an environment close to the actual natural environment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a configuration diagram of a corrosion test apparatus according to an embodiment of the present invention. FIG. 2 is a configuration diagram schematically showing a corrosive liquid contact device of the corrosion test apparatus according to the embodiment of the present invention. FIG. 3 is a configuration diagram schematically showing a drying device of the corrosion test apparatus according to the embodiment of the present invention. FIG. 4 is a configuration diagram schematically showing a water contact device of a corrosion test apparatus according to an embodiment of the present invention. FIG. 5 is a block diagram schematically showing an irradiation apparatus of the corrosion test apparatus according to the embodiment of the present invention. FIG. 6 is a configuration diagram schematically showing a freezing device of the corrosion test apparatus according to the embodiment of the present invention.

  A test object T shown in FIGS. 2 to 6 is a test piece to be subjected to a corrosion test, and is, for example, a trolley wire or a support fitting that supports the trolley wire. The material of the test object T is, for example, a metal such as copper or aluminum, or a synthetic resin such as plastic.

A corrosion test apparatus 1 shown in FIGS. 1 to 6 is an apparatus for testing the corrosion resistance of a test object T. The corrosion test apparatus 1 is brought into contact with the corrosive liquid L ₁ while being transported by the transport apparatus 3, and the test target T is dried, contacted with water L ₂ , or frozen to be tested. The corrosion resistance of the object T is tested. As shown in FIGS. 1 to 6, the corrosion test apparatus 1 includes a storage device 2, a transport device 3, a corrosive liquid contact device 4, a drying device 5, a water contact device 6, an irradiation device 7, and a freezing device. A device 8, a setting device 9, a storage device 10, a control device 11 and the like are provided.

The accommodation device 2 shown in FIGS. 2 to 6 is means for accommodating the test object T. The storage device 2 is a container or the like that seals and stores the test object T so that environmental influences such as external temperature and humidity do not act on the test object T or the like. As shown in FIG. 2, the storage device 2 has a discharge port 2 a that discharges the corrosive liquid L ₁ after dripping to the outside of the storage device 2, and the sprayed water L ₂ as shown in FIG. And a discharge port 2b for discharging to the outside.

The transport apparatus 3 shown in FIGS. 2 to 6 is means for transporting the test object T. As shown in FIGS. 2 to 6, in the transport device 3, the test object T is located in the corrosive liquid contact area S ₁ , the drying area S ₂ , the water contact area S ₃ , the irradiation area S ₄ , and the freezing area S _5. As described above, the test object T is intermittently conveyed to corrode the test object T. As shown in FIGS. 2 to 6, the transport device 3 includes a mounting portion 3 a, a drive portion 3 b, a position detection portion 3 c, and the like. The mounting portion 3a is a portion on which the test object T is mounted, and is a disk-shaped table that rotates around the central axis O. The drive unit 3b is a part that rotationally drives the mounting unit 3a, and is a motor that generates a driving force that rotates the mounting unit 3a around the central axis O. The position detection unit 3c is a part that detects the rotational position of the mounting unit 3a. The position detection unit 3c is an encoder that detects the rotation angle and / or rotation position of the mounting unit 3a around the central axis O, and outputs the detection result to the control device 11 as position detection information.

The corrosive liquid contact device 4 shown in FIG. 2 is means for bringing the test object T and the corrosive liquid L ₁ into contact with each other. For example, the corrosive liquid contact apparatus 4 is a dropping device that drops the corrosive liquid L ₁ on the test object T. As shown in FIG. 2, the corrosive liquid contact device 4 includes an accommodating portion 4a, a dropping portion 4b, a supply flow path 4c, an adjusting portion 4d, and the like. Accommodating portion 4a is a portion for accommodating the etchant L _1, brine, aqueous sodium hydroxide, a tank for accommodating the etchant L _1, such as copper sulfate solution or ammonia-based solution. The dripping part 4b is a part for dripping the corrosive liquid L ₁ onto the test object T, and the corrosive liquid L ₁ has a predetermined interval (for example, a dripping interval Δ shown in FIG. 2) toward the surface of the test object T. It is a discharge port (nozzle) for discharging the corrosive liquid L ₁ so as to open and fall. Supply passage 4c is a part for supplying the etchant L ₁ to the dropping portion 4b from the housing portion 4a, the dropping portion 4b of the etchant L ₁ of connects the housing portion 4a and the dropping portion 4b accommodating portion 4a It is a pipe that leads. Adjusting portion 4d is a portion that adjusts the flow of the etchant L ₁ in the supply passage 4c, the valve adjusts the opening degree of the supply passage 4c by opening and closing the supply passage 4c or supply channel 4c, This is a pump that adjusts the flow rate of the corrosive liquid L ₁ flowing through the pipe and sends the corrosive liquid L ₁ to the dropping portion 4b. Adjustment unit 4d, for example, when simulating the natural environment, such as in undersea tunnel seawater leakage, corrosion liquid etchant L ₁ drop amount of L ₁ and / or an addition interval on the surface of the variable to the test object T Is dropped from the dropping part 4b.

  The drying device 5 shown in FIG. 3 is means for drying the test object T. For example, the drying apparatus 5 is a hot air dryer that blows hot air on the test object T to dry the test object T at 60 to 100 ° C. As shown in FIG. 3, the drying device 5 includes a blower 5a, a heater 5b, a rectifier 5c, a temperature detector 5d, and the like. The air blower 5 a is a part that sends out gas, and is a blower such as a blower, a compressor, or a fan that takes in air from the outside of the housing device 2 and discharges it into the housing device 2. The heating part 5b is a part that heats the gas, and is a heater that heats the air while allowing the air sent from the blower part 5a to pass therethrough. The rectifying unit 5c is a part that adjusts the flow of gas, and is a rectifying plate that adjusts the direction of the flow of air heated by the heating unit 5b so that hot air uniformly strikes the test object T. The temperature detector 5d is a part that detects the temperature of the test object T. The temperature detection unit 5d is a temperature sensor that detects the surface temperature of the test object T, and outputs the detection result to the control device 11 as temperature information.

The water contact device 6 shown in FIG. 4 is a means for bringing the test object T and the water L ₂ into contact with each other. For example, the water contact device 6 is a spray device that sprays the water L ₂ onto the test object T. As shown in FIG. 4, the water contact device 6 includes an accommodating portion 6a, a nozzle portion 6b, a supply flow path 6c, a delivery portion 6d, and the like. Housing part 6a is a portion for accommodating the water L _2, a tank containing fresh water, water L _2, such as rain water or water. The nozzle portion 6 b is a portion that discharges the water L ₂ to the test target T, and is a discharge port that sprays the water L ₂ toward the surface of the test target T. Supply passage 6c is a portion to be supplied to the nozzle portion 6b water L ₂ from the accommodating portion 6a, housing portion connects 6a and the nozzle portion 6b, guides the water L ₂ in the housing part 6a to the nozzle portion 6b It is piping. Sending part 6d, from the housing portion 6a to the nozzle portion 6b is a part for sending the water L _2, pump water L ₂ on the upstream side supply passage 6c of compressed discharged to the supply passage 6c downstream It is. Sending unit 6d, for example, when simulating the natural environment exposed to rain water, so the amount of sprayed water L ₂ on the surface of the variable to the test object T is spraying water L ₂ from the nozzle portion 6b.

The irradiation device 7 shown in FIG. 5 is a means for irradiating the test object T with the light L ₃ , for example, a light irradiation device for irradiating light (electromagnetic waves) L ₃ such as infrared rays or ultraviolet rays. As shown in FIG. 5, the irradiation apparatus 7 includes a light emitting unit 7a, a reflecting unit 7b, a driving unit 7c, a light detecting unit 7d, and the like. Emitting portion 7a is a portion for emitting light L _3, which is a light source such as ultraviolet irradiation discharge lamp emitting ultraviolet rays. Reflecting portion 7b is a portion for reflecting the light L ₃ to the test object T from the light emitting portion 7a, and the like reflector disposed equidistantly from the light-emitting unit 7a. The drive part 7c is a part which drives the light emission part 7a and the reflection part 7b. The driving unit 7c is a motor or the like that drives the light emitting unit 7a and the reflecting unit 7b, and the light L that irradiates the test target T with variable distances between the light emitting units 7a and the reflecting unit 7b and the test target T. Adjust the emission intensity of ₃ . The light detection unit 7d is an illuminance sensor that detects the illuminance on the surface of the test object T, and outputs the detection result to the control device 11 as illuminance information.

  The freezing apparatus 8 shown in FIG. 6 is a means for freezing the test object T, and is, for example, a refrigeration apparatus that cools or freezes the test object T. As shown in FIG. 6, the freezing device 8 includes a compression unit 8a, a condensation unit 8b, an expansion unit 8c, an evaporation unit 8d, a flow path 8e, a temperature detection unit 8f, and the like. The compression part 8a is a part which compresses a refrigerant | coolant, and is a compressor etc. which compress and discharge | emit the low voltage | pressure refrigerant | coolant which flows through the flow path 8e. The condensing unit 8b is a part that condenses the refrigerant, and is a condenser or the like that condenses the vaporized refrigerant discharged from the compressing unit 8a to the liquefied refrigerant by exchanging heat with the air outside the storage device 2. The expansion part 8c is a part that expands the refrigerant, and is an expansion valve that expands the liquefied refrigerant discharged from the condensing part 8b into a vaporized refrigerant. The evaporating unit 8d is a part that evaporates the refrigerant, and is an evaporator or the like that heats the refrigerant that has passed through the expansion unit 8c with the air inside the accommodating device 2 to cool the inside of the accommodating device 2. The flow path 8e is a part through which the refrigerant flows, and is connected so that the refrigerant flows in one cycle from the compression part 8a through the condensing part 8b, the expansion part 8c and the evaporation part 8d to return to the compression part 8a. ing. The temperature detection unit 8 f is a part that detects the temperature of the test object T. The temperature detection unit 8f is a temperature sensor or the like that detects the surface temperature of the test object T, and outputs the detection result to the control device 11 as temperature information.

  A setting device 9 shown in FIG. 1 is a means for setting various operations of the corrosion test apparatus 1. The setting device 9 is an operation panel or the like operated by a tester when setting test conditions for a corrosion test. The setting device 9 sets test conditions based on, for example, meteorological data such as actual coastal areas, mountainous areas, snowy areas, or heavy snowfall areas on which railway vehicles are traveling, and time in which these areas are shortened for one year. To do. The setting device 9 arbitrarily selects and combines the corrosive liquid contact process, the drying process, the water contact process, the irradiation process, or the freezing process, or sets these processes in an arbitrary order. For example, the setting device 9 sets the same environment as the actual natural environment for one year at the site where the actual object is placed as the test condition. The setting device 9 outputs the test conditions after setting to the control device 11 as test condition information.

  The storage device 10 is means for storing the test conditions of the corrosion test set by the setting device 9. The storage device 10 includes test condition information such as test conditions such as a corrosive liquid contact process, a drying process, a water contact process, an irradiation process or a freezing process, a drying process or a freezing process temperature, and an irradiation process emission intensity. Is stored as a memory.

  The control device 11 shown in FIGS. 1 to 6 is means for controlling various operations of the corrosion test apparatus 1. The control device 11 controls the operations of the transport device 3, the corrosive liquid contact device 4, the drying device 5, the water contact device 6, the irradiation device 7 and the freezing device 8, or reproduces the same environment as the actual natural environment. Control each action. The control device 11 controls, for example, the operation of the mounting portion 3a based on the position detection information output from the position detection portion 3c of the transfer device 3 shown in FIGS. 2 to 6, or the corrosive liquid contact device 4 shown in FIG. The operation of the adjustment unit 4d is controlled, and the amount of air sent from the blower unit 5a and the heating temperature of the heating unit 5b of the drying device 5 shown in FIG. 3 are controlled based on the temperature information output by the temperature detection unit 5d. The amount of light emitted from the light emitting portion 7a and the drive portion 7c are controlled based on the illuminance information output from the light detecting portion 7d of the irradiation device 7 shown in FIG. The driving amount is controlled, and the operation of the compression unit 8a is controlled based on the temperature information output from the temperature detection unit 8f of the freezing device 8 shown in FIG. Moreover, the control apparatus 11 controls each operation | movement so that the actual natural environment for one year of the field where an actual target object is arrange | positioned may be reproduced in shorter time than actual time, for example.

Next, a corrosion test method according to an embodiment of the present invention will be described.
FIG. 7 is a process diagram showing, as an example, a corrosion test method according to an embodiment of the present invention. In the following, a case where a one-year cycle (spring, summer, autumn and winter) of a certain site is reproduced will be described as an example.
The corrosion test method # 100 shown in FIG. 7 is a method for testing the corrosion resistance of the test object T shown in FIGS. 2 to 6, and includes a corrosion liquid contact step # 110, a drying step # 120, and an irradiation step # 130. , A water contact step # 130, a corrosive liquid contact step # 140, a freezing step # 150, a corrosive liquid contact step # 160, and the like.

As shown in FIG. 2, the corrosive liquid contact process # 110 is a process of bringing the test object T and the corrosive liquid L ₁ into contact with each other. When the tester sets the test conditions such as the dropping amount and / or the dropping interval of the corrosive liquid L ₁ by the setting device 9, these test conditions are output from the setting device 9 to the control device 11 as test operation information, and the control device 11 stores the test operation information in the storage device 10. The control device 11 reads the test operation information from the storage device 10 and the control device 11 executes a series of corrosion test operations. When the test object T is mounted on the mounting portion 3a shown in FIG. 2, the control device 11 controls the rotation amount of the driving unit 3b of the transport device 3 so that the test object T is in the corrosive liquid contact region S _1. The drive unit 3b is instructed to rotate the mounting unit 3a until it is positioned at. When the test object T is located in the corrosive liquid contact region S ₁ , the control device 11 controls the operation of the adjusting unit 4 d of the corrosive liquid contact device 4 to corrode the container 4 a at a predetermined drop amount and / or drop interval. The liquid L ₁ falls from the dropping part 4b to the surface of the test object T, and the test object T and the corrosive liquid L ₁ come into contact with each other.

The drying step # 120 shown in FIG. 7 is a step of drying the test object T. After the corrosive liquid L ₁ is discharged to the test object T in the corrosive liquid contact process # 110 for a predetermined time, the controller 11 controls the rotation amount of the drive unit 3b shown in FIG. until it positioned in dry region S ₂ for commanding the rotation of the mounting portion 3a to the driving unit 3b. Next, the control device 11 controls the operation of the air blowing unit 5a and the heating unit 5b of the drying device 5, and the surface of the test object T is heated and dried by hot air having a high temperature of about 60 to 100 ° C.

Irradiation step # 130 shown in FIG. 7 is a step of irradiating the light L ₃ to the test object T. After the test object T is hot air drying for a predetermined time in the drying step # 120, the amount of rotation of the drive portion 3b shown in FIG. 5 the control unit 11 operates the control, positioned in the irradiation region S ₄ test object T The drive unit 3b is instructed to rotate the mounting unit 3a until it is done. Next, the control device 11 controls the operation of the light emitting unit 7a and the driving unit 7c of the irradiation device 7, and the surface of the test object T is irradiated with ultraviolet rays.

The water contact step # 140 shown in FIG. 7 is a step for bringing the test object T and the water L ₂ into contact with each other. After the test object T is irradiated with ultraviolet rays for a predetermined time in the irradiation step # 150, the controller 11 controls the rotation amount of the drive unit 3b shown in FIG. 4 so that the test object T is in the water contact region S _3. The drive unit 3b is instructed to rotate the mounting unit 3a until it is positioned at. Next, the transmission portion 6d of the water contacting device 6 control unit 11 operates the control, water L ₂ is injected to the surface of the test object T from the nozzle portion 6b of the housing portion 6a, a test object T Contact with water L ₂ .

The corrosive liquid contact process # 150 shown in FIG. 7 is the same process as the corrosive liquid contact process # 110. After water L ₂ is sprayed for a predetermined time the test object T in the water contact step # 140, the test object T as shown in FIG. 2 is again conveyed to the corrosive liquid contacting area S _1, etchant L ₁ Drops from the dripping portion 4b onto the surface of the test object T, and the test object T and the corrosive liquid L ₁ come into contact with each other.

The freezing step # 160 shown in FIG. 7 is a step of freezing the test object T. After the corrosive liquid L ₁ is discharged to the test object T for a predetermined time in the corrosive liquid contact process # 150, the control device 11 controls the rotation amount of the drive unit 3b shown in FIG. until positioned in frozen areas S ₅ commanding the rotation of the mounting portion 3a to the driving unit 3b. Next, the control device 11 controls the operation of the compression unit 8 a of the freezing device 8 to cool the inside of the storage device 2 and freeze the test object T.

The corrosive liquid contact process # 170 shown in FIG. 7 is the same process as the corrosive liquid contact processes # 110 and 150. After the test object T is frozen for a predetermined time in the freezing process # 160, the test object T is transported again to the corrosive liquid contact region S ₁ as shown in FIG. 2, and the corrosive liquid L ₁ is discharged from the dropping part 4b. The test object T falls on the surface of the test object T, the test object T and the corrosive liquid L ₁ come into contact, and a series of corrosion tests are completed.

The corrosion test apparatus and the corrosion test method according to the embodiment of the present invention have the following effects.
(1) In this embodiment, the test liquid T is brought into contact with the test object T and the corrosive liquid L _1, and the test apparatus T is frozen by the freezing apparatus 8. The control device 11 controls the operation of the freezing device 8. For this reason, for example, the corrosion resistance of a material placed in a natural environment where salt water is bathed in spring or summer and the sea water freezes in winter can be tested. In addition, when a crack occurs in the test object T after corrosion and the corrosive liquid or water enters the crack, whether or not the corrosive liquid or water expands after freezing and the test object T is destroyed. Can be confirmed.

(2) In this embodiment, the test object T and the water L ₂ are brought into contact with the water contact device 6, and the operation of the water contact device 6 is controlled by the control device 11. For this reason, for example, the corrosion resistance of a material arranged in a natural environment where it rains not only in salt water but also in summer can be tested.

(3) In this embodiment, the test object T and the corrosive liquid L ₁ are brought into contact with the corrosive liquid contact device 4, and the test target object T and the water L ₂ are brought into contact with the water contact device 6, so that the corrosive liquid The controller 11 controls the operation of the contact device 4 and the operation of the water contact device 6. For this reason, for example, the corrosion resistance of a material placed in a natural environment such as near the coast where salt water is bathed in spring or summer and rain water is bathed in summer can be tested.

(4) In this embodiment, the test object T is dried by the drying device 5, and the operation of the drying device 5 is controlled by the control device 11. For this reason, for example, it is possible to test the corrosion resistance of materials placed in a natural environment with strong sunlight in summer as well as being bathed in salt water or rainwater. Moreover, in this embodiment, since the drying apparatus 5 dries the test object T at 60 to 100 ° C., the corrosion resistance can be tested by easily reproducing the situation under the hot sun.

(5) In this embodiment, the irradiation device 7 irradiates the test object T with the light L ₃ , and the control device 11 controls the operation of the irradiation device 7. For this reason, for example, it is possible to test the corrosion resistance of a material placed in a natural environment with strong sunlight in summer and to test the weather resistance of a material exposed to ultraviolet rays or infrared rays.

(6) In this embodiment, the control device 11 controls each operation so as to reproduce the same environment as the actual natural environment. For this reason, the corrosion resistance of the material arrange | positioned in the vicinity of a shore, a submarine tunnel, etc. can be evaluated according to an actual natural environment.

(7) In this embodiment, the control device 11 controls each operation so that the actual natural environment for one year is reproduced in a shorter time than the actual time. For this reason, a corrosion test simulating an actual natural environment can be efficiently performed in a short time.

The present invention is not limited to the embodiment described above, and various modifications or changes can be made as described below, and these are also within the scope of the present invention.
(1) In this embodiment, the case where the corrosive liquid contact device 4 is a dropping device has been described as an example. However, the spraying device for spraying the corrosive liquid L ₁ on the test object T or the test object T is corroded. The present invention can also be applied to the case of an immersion apparatus immersed in the liquid L ₁ . Similarly, although the case where the water contact device 6 is a spray device has been described as an example, a drip device that drops water L ₂ on the test object T, or an immersion device that immerses the test object T in water L _2. The present invention can also be applied to cases where Furthermore, in this embodiment, the case of reproducing a one-year cycle (spring, summer, autumn and winter) of a certain site as shown in FIG. 7 has been described as an example. However, each process is arbitrarily set according to the situation of each site. Corrosion tests can also be performed in combination.

(2) In this embodiment, the case of testing the corrosion resistance of one test object T has been described as an example. However, a reference test piece serving as a reference for evaluation of corrosion resistance and an evaluation test piece for evaluating corrosion resistance It is also possible to determine the degree of corrosion of the evaluation test piece relative to the reference test piece by comparing the reference test piece with the evaluation test piece. In this embodiment, the case where the transport device 3 has a rotary table shape has been described as an example. However, the present invention can also be applied to a case where the transport device has a conveyor shape. Furthermore, in this embodiment, salt water or the like has been described as an example of the corrosive liquid L _1. However, when the test period is shortened, any corrosive corrosive liquid L ₁ other than salt water can be selected.

It is a block diagram of the corrosion test apparatus which concerns on embodiment of this invention. It is a block diagram which shows roughly the corrosive liquid contact apparatus of the corrosion test apparatus which concerns on embodiment of this invention. It is a block diagram which shows roughly the drying apparatus of the corrosion test apparatus which concerns on embodiment of this invention. It is a block diagram which shows roughly the water contact apparatus of the corrosion test apparatus which concerns on embodiment of this invention. It is a block diagram which shows roughly the irradiation apparatus of the corrosion test apparatus which concerns on embodiment of this invention. It is a block diagram which shows roughly the freezing apparatus of the corrosion test apparatus which concerns on embodiment of this invention. It is process drawing which shows the corrosion test method which concerns on embodiment of this invention as an example. It is a block diagram which shows the conventional corrosion test apparatus schematically, (A) is a block diagram of a salt spray test apparatus, (B) is a block diagram of a liquid immersion test apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Corrosion test apparatus 2 Containment apparatus 3 Conveyance apparatus 4 Corrosion liquid contact apparatus 5 Drying apparatus 6 Water contact apparatus 7 Irradiation apparatus 8 Freezing apparatus 9 Setting apparatus 10 Storage apparatus 11 Control apparatus T Test object L ₁ Corrosion liquid L ₂ Water L ₃ light

Claims (16)

A corrosion test apparatus for testing the corrosion resistance of a test object,
A corrosive liquid contact means for bringing the test object into contact with the corrosive liquid;
Freezing means for freezing the test object;
Control means for controlling the operation of the corrosive liquid contact means and the operation of the freezing means;
Corrosion test equipment comprising. The corrosion test apparatus according to claim 1,
Water contact means for bringing the test object into contact with water;
The control means controls the operation of the water contact means;
Corrosion test equipment characterized by. A corrosion test apparatus for testing the corrosion resistance of a test object,
A corrosive liquid contact means for bringing the test object into contact with the corrosive liquid;
Water contact means for bringing the test object into contact with water;
Control means for controlling the operation of the corrosive liquid contact means and the water contact means;
Corrosion test equipment comprising. In the corrosion test apparatus according to any one of claims 1 to 3,
A drying means for drying the test object;
The control means controls the operation of the drying means;
Corrosion test equipment characterized by. The corrosion test apparatus according to claim 4,
The drying means is for drying the test object at 60 to 100 ° C;
Corrosion test equipment characterized by. In the corrosion test apparatus according to any one of claims 1 to 5,
An irradiation means for irradiating the test object with light;
The control means controls the operation of the irradiation means;
Corrosion test equipment characterized by. In the corrosion test apparatus according to any one of claims 1 to 6,
The control means controls each operation so as to reproduce the same environment as an actual natural environment;
Corrosion test equipment characterized by. The corrosion test apparatus according to claim 7,
The control means controls each operation so as to reproduce the actual natural environment of the year in a shorter time than the actual time;
Corrosion test equipment characterized by. A corrosion test method for testing the corrosion resistance of a test object,
A corrosive liquid contact step of bringing the test object into contact with the corrosive liquid;
A freezing step of freezing the test object after the corrosive liquid contact step;
Corrosion test method including. The corrosion test method according to claim 9,
Including a water contact step of bringing the test object into contact with water;
Corrosion test method characterized by A corrosion test method for testing the corrosion resistance of a test object,
A corrosive liquid contact step of bringing the test object into contact with the corrosive liquid;
A water contact step of bringing the test object into contact with water after the corrosive liquid contact step;
Corrosion test method including. In the corrosion test method according to any one of claims 9 to 11,
Including a drying step of drying the test object after the corrosive liquid contact step;
Corrosion test method characterized by The corrosion test method according to claim 12,
The drying step includes a step of drying the test object at 60 to 100 ° C .;
Corrosion test method characterized by In the corrosion test method according to claim 12 or 13,
Including an irradiation step of irradiating the test object with light after the drying step;
Corrosion test method characterized by In the corrosion test method according to any one of claims 9 to 14,
Each process is reproduced so as to be the same environment as the actual natural environment,
Corrosion test method characterized by The corrosion test method according to claim 15,
In each of the steps, the actual natural environment for one year is reproduced in a shorter time than the actual time.
Corrosion test method characterized by

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