JP3438885B1 - Salt spray test equipment - Google Patents

Abstract

Abstract: [PROBLEMS] To measure spray amount, minimize fluctuations in test conditions due to interruption of operation, shorten spray time collection time, drastically reduce spray amount adjustment time and shipping inspection time, and reduce spray amount variation in the test tank. Accurate grasp, variation control of spray amount,
Provided is a salt spray test apparatus capable of accurately grasping the history of each corrosion factor such as the spray amount on each test piece, shortening the test time in multiple spray amounts, and improving workability. Kind Code: A1 A means for fitting a shaft to a spray tower, centering on the spray tower.
An arm extending radially from the shaft fitting means as a shaft; and
And the spray amount with the spray amount collecting device arranged on each arm
Collecting means supporting means, having a spray collecting means, and
The spray amount collector is arranged for each sample piece adjacent to each sample piece.
It is arranged, for each sample piece in each spray amount collector
Spray volume can be collected individually and sprayed into the test tank
A means to change the degree of distribution by giving directionality to the spray distribution
Have.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the salt water in the mist sprayed, salt spray test instrumentation to examine the corrosion resistance of various materials
About the installation . More specifically, it relates to the spray amount, which is one of the test conditions, and includes a means for easily confirming the spray amount in a short time, a means for arbitrarily shifting the spray amount distribution, and a correlation between the spray amount and corrosion. One of the means to accurately grasp in a short time
Or a combination of a plurality.

[0002]

2. Description of the Related Art In a salt spray test apparatus and a salt spray test method, improvements in pH, spray amount, and the like have been conventionally made. The problem of pH is described in Patent 2 of the present applicant.
No. 61655 or the like. Regarding the amount of spray, the distribution of spray has been made uniform.

[0003] In the conventional salt spray test apparatus, as shown in JIS Z 2371: 2000, the spray liquid collecting container is generally placed at two positions, a position near the spray tower and a position far from the spray tower. Was. The collected spray was collected through a long tube attached to the collector. Furthermore, in the conventional salt spray test method,
The degree of corrosion of the sample was measured in units of spraying time.

[0004] Conventional methods for adjusting the amount of salt spray are described in JI.
During the standard tests such as S, ISO, and ASTM, there are regulations along with the test temperature, salt concentration, specific gravity, pH, etc. of the spray liquid. Regarding the spray amount of salt water, JIS Z 2371: 200
According to No. 0, "After operating for 24 hours in a state where the spray chamber is filled with test pieces of a predetermined size and shape, the amount of spray liquid collected is an average per hour for each horizontal sampling area of 80 cm ² . 1.5 ± 0.5 mL. " The ASTM defines the average spray amount during the operation for 16 hours, and the ISO defines the average spray amount as 24 hours. In addition, it is required for the accuracy of the test apparatus that the spray amount vary little depending on the collection position in the test tank.

[0005]

As described above, in collecting such a spray amount, the specified time is defined as a long time of 16 hours or 24 hours. For this reason, when the spray amount per unit time does not fall within the specified range, an inefficient state has arisen in which the spray amount must be measured again over 16 hours and 24 hours. originally,
The reason why such a long time must be taken is that the spray in the salt spray test needs to naturally drop from above in the test tank and pour down onto the sample surface, and the temperature in the test tank is usually 35 ± Must be kept at 3 ° C,
Therefore, it is required that the test or the spray state is stable from the viewpoint of the reproducibility of the test, so that the time as long as it is possible to cancel a slight change in the test condition is set, and the average value per unit time is set. It is considered that the spray amount is specified. However, whether a salt spray test is performed or a device is manufactured, spending a long time for checking the spray amount cannot be confirmed from the viewpoint of labor reduction (labor saving) and economic rationality. There was a problem. In particular, in recent years in which a speed-up is required, it has been a serious problem that excessive adjustment time is required at a production site or a test site.

[0006] Further, in the conventional spray amount collecting device, the spray liquid is collected in the measuring cylinder through a long pipe provided at the lower part, so that water droplets adhere to the measuring cylinder and reach the measuring cylinder. Or not
There is a problem that the liquid is in the form of water droplets and the portion in contact with the air is large, so that the water evaporates and the spray amount cannot be accurately known.

[0007] Further, it is required that the spray amount has little variation depending on the collecting position in the test tank as an accuracy of the test apparatus. This is because, in the evaluation of the corrosion test, the corrosion state of the individual sample is greatly affected by the amount of spray. Even if a spray test is performed for the same test time with a spray amount within a specified range of 1 to ² mL / hour / 80 cm ² , variation may occur in corrosion. Therefore, when accuracy is required, the total spray amount per area received by the test piece is more important than the spray time. When performing a combined cycle test, it takes time for the conditions such as spraying and drying to stabilize at each stage, so that the variation in the test tank is further increased. Therefore, the reproducibility of the test results was poor.

Further, among new materials developed in recent years, the relationship between the spray amount and the corrosion weight loss is not linear or curved, and there is a material that suddenly corrodes at a certain spray amount.
In a sample subjected to such a corrosion method, a small difference in spray amount particularly causes a large corrosion difference. However, conventionally, as described above, the collection positions of the spray liquid are two positions, that is, a position close to the spray tower and a position far from the spray tower, and each of the collected spray amounts is within the specified range of 1 to 2 mL / hour. For example, the test results were considered qualitatively, not quantitatively, assuming that all the samples received the average value of the spray amount at the two locations evenly. Therefore, there was a problem that a more accurate spray amount received by each sample could not be known, and a quantitative test could not be performed. Particularly, in a sample in which a slight difference in spray amount causes a large corrosion difference, it is a serious problem that the individual spray amount received by each sample cannot be known. After all, if you try to get quantitative data to determine the amount of spray that will start to corrode abruptly, you will have to perform a long spray test several times, and more than 10 times if more. It was a major problem in today's test sites, which are very inefficient and require speed.

[0009] In order to solve these problems, there has been a limit to the improvement that has been conventionally performed to make the spray amount distribution uniform. Therefore, the present inventors change the viewpoint from uniform distribution to conversely bias distribution and individualization of the spray amount, and impart a bias to the distribution of the spray amount or individually collect the viewpoint. I changed my mind.

The present invention has been made in view of such a problem. Accordingly, it is an object of the present invention to minimize fluctuations in test conditions due to interruption of operation, reduce the time required to collect the spray amount, and measure the spray amount when measuring the spray amount. Dramatically shorten the amount adjustment time and shipping inspection time, accurately grasp the variation of the spray amount in the test tank, control the variation of the spray amount, and also accurately grasp the history of each corrosion factor such as the spray amount on each test piece It is another object of the present invention to provide a salt water spray test apparatus capable of shortening a test time and improving workability at a plurality of spray amounts. We have:
In order to achieve the above object, the present inventors have conducted intensive studies with different viewpoints, and as a result, completed the present invention after trial and error.

[0011]

Means for Solving the Problems To achieve the above object, a salt water spray test apparatus according to the present invention comprises: a salt water spray test apparatus having a spray tower in a test tank; Fitting means, (b) one or more arms extending radially from the shaft fitting means with the spray tower as a central axis, and (c) a spray amount collecting device disposed on each of the arms.
Or one or more spray collecting means having a plurality of spray amount collecting means supporting means , and the spray amount collecting means is provided for each sample.
Each sample piece is arranged adjacent to the sample and the spray amount
The sampler can collect the spray amount for each sample individually.
The direction of the spray distribution sprayed into the test tank
It is characterized by having means for changing the degree of cloth .

In the salt spray test apparatus according to the present invention, preferably, the arm is extensible.

[0013] In the salt spray test apparatus of the present invention, it is preferable that the spray tower has a level check device, and that each spray collecting position member is kept horizontal.

[0014] In the salt spray test apparatus of the present invention, the spray amount collecting device may be a funnel having a measuring cylinder portion having an air bleeding device at a lower portion, and having cocks with holes at upper and lower portions of the measuring cylinder portion. preferable.

[0015] In the salt spray test apparatus of the present invention, it is more preferable that each of the spray amount collectors further includes a temperature sensor and a level checking device.

In the salt spray test apparatus of the present invention, it is preferable that the means for giving a direction to the spray distribution and changing the degree of distribution is an air-side spray nozzle notched such that its tip is inclined.

Further , in the salt spray test apparatus of the present invention, the means for giving a direction to the spray distribution and changing the distribution degree is provided at the tip of the air-side spray nozzle, the top of the head is pointed, and It is preferable that the cap is notched so that air is conducted.

Furthermore, salt spray test apparatus of the present invention, it cut that is broken away of the cap is not horizontal is more preferable.

In the salt spray test apparatus of the present invention, it is preferable that the means for giving a direction to the spray distribution and changing the degree of distribution is that an opening of a cylindrical portion of the spray tower is inclined.

Further, in the salt spray test apparatus of the present invention, the means for giving a direction to the spray distribution and changing the degree of distribution is provided at an upper portion of the cylindrical portion of the spray tower, the opening at the top is inclined. It is preferably a circular tube.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings.

[0022] <salt spray test device> (Embodiment 1) FIG. 1 is a perspective view of a first embodiment of the salt spray test apparatus of the present invention. In the salt spray test apparatus (1) according to the first embodiment of the present invention shown in FIG. 1, a spray tower (3) is mounted at the center of a test tank (2), and a liquid side stored in the spray tower (3). A mist is generated through the spray nozzle (4) and the air-side spray nozzle (5), the mist is diffused from the upper end of the spray tower (3) into the test tank (2), and falls onto the sample piece on the sample holder. A spray collecting position determining member (8) is provided as a spray amount collecting means.

FIG . 2 is a perspective view of the spray collecting position determining member of the first embodiment of the salt spray test apparatus of the present invention. In Example 1 of the salt water spray test apparatus of the present invention, the spray collecting positioning member (8) is a spray tower (3) that is pivotally supported and fitted to the spray tower (3). It has a body support (9) fitted into the upper cylinder (13) of 3). The body support (9) is rotatably fitted to the spray tower (3).
In addition, there is an arm (10) extending radially from the solid support (9) extending around the spray tower (3) as a central axis. Then, the spray amount collector (1) arranged at the tip of the arm (10)
6) Further, it has a spray amount collector support (11) for supporting the spray amount collector (16). The body support (9) has a ring shape and is located at the center of the spray collection position body (8).

[0024] Spray collected positioning of Example 1 of the salt spray test apparatus of the present invention (8), without fixing the spray tower (3),
It is provided detachably. Spray collection positioning body (8)
Has a mechanism that can be supported around the spray tower (3). The number of arms (10) extending radially in the horizontal direction is four in Example 1 of the salt spray test apparatus of the present invention.
Or you may combine two or more. In the first embodiment of the salt spray test apparatus of the present invention, the arm (10) extended from the solid support (9) is positioned at the position of the spray amount collector support (11) as shown in FIG. Adjustment, that is, a nesting mechanism (1) capable of position adjustment so as to match a predetermined spray amount collection position.
4) is provided.

The spray tower (3) is provided with a level checking device (19). Spray tower leveling device (1
9) The leveling device (19a) for the foot of the spray tower adjusts the height of each foot, and the level checking device (1) at the top of the spray tower.
In 9b), the level is checked. By the operation of the leveling device (19), the horizontal position of the spray collection positioning member (8) fitted to the spray tower is maintained.

In the first embodiment of the salt spray test apparatus of the present invention, the spray collecting position determining member (8) can be rotatably fitted to the upper cylinder (13) of the spray tower (3).
Spray amount collector (1)
The position of 6) can be freely changed in the circumferential direction of the spray tower (3), and the spray amount at an arbitrary position at a certain distance from the spray tower (3) can be measured. Therefore, according to the first embodiment of the salt spray test apparatus of the present invention, it is possible to accurately know the variation of the spray amount in the test tank. In addition, in Example 1 of the salt spray test apparatus of this invention, although the number of the spray collecting position determination body (8) is one, you may combine two or more.

Further, since it is easy to remove the spray collecting position determining member (8) from the spray tower (3), the operation is simple. Therefore, according to Example 1 of the salt spray test apparatus of the present invention, workability can be improved.

The spray amount collector (16) is attached to the spray amount collector support (11) in advance, and the test tank (2) is installed.
The lid (24) is opened and the spray volume collector (16)
Since the spray collecting positioning body (8) with the attached (1) can be attached to the spray tower (3), the opening time of the test tank (2) can be extremely short. Therefore, the test tank (2)
The return to the stable spray state in the inside becomes short, and the time for collecting the spray amount can be greatly reduced. Therefore, according to the first embodiment of the salt spray test apparatus of the present invention, it is possible to minimize the fluctuation of the test conditions due to the interruption of the test apparatus operation, and to collect the spray amount in a short time. The amount adjustment time and shipping inspection time can be greatly reduced.

In the first embodiment of the salt spray test apparatus of the present invention, a funnel (12) having a measuring cylinder (15) attached to the lower part is used as the spray amount collector (16). The amount of spray is measured by measuring the amount of water accumulated in the measuring cylinder section (15) by reading the scale of the measuring cylinder.

[0030] Therefore, according to the first embodiment of the salt spray test apparatus of the present invention, unlike the conventional, will stick becomes water droplets in the tube, or not reach the graduated cylinder unit, air waterdrop shape There is no problem that the amount of spray cannot be accurately known due to evaporation of water due to the large portion in contact with the mist, and the amount of spray can be accurately known at each sampling location. Thus, it is possible to accurately know the variation in the spray amount in the test tank.

Further , as the spray amount collecting device (16), a funnel (1) having a measuring cylinder portion (15) attached to the lower portion is used.
Filter paper may be used instead of 2). When a filter paper is used, the amount of water poured onto the filter paper is calculated by measuring the weight of the filter paper and subtracting the weight of the filter paper before the test that has been measured in advance. Particularly, when a very small amount of spray is measured, the simplicity and accuracy are high.

[0032] Incidentally, FIG. 3 is a plan view showing a spray amount harvester position of a conventional salt spray test device. In the conventional salt spray test apparatus, the spray amount collecting positions are fixed at two positions, near and far from the spray tower, with the spray tower interposed therebetween. In such a conventional salt water spray test apparatus, it is impossible to accurately know the variation of the spray amount in the test tank, and it is not possible to accurately know the history of each corrosion factor such as the spray amount on each test piece. Had the problem of.

[0033] Using the salt spray test apparatus of the present invention,
The amount of salt spray can be adjusted with time. Fig. 9 shows the collection of spray amount
It is a test tank plan schematic diagram which shows the example 1 of a position. In FIG. 9, the square
The frame indicates the test tank, the black circle indicates the position of the spray tower,
The circle indicates the measurement position, and the number in the circle indicates the measurement point number.
You.

[0034] Table 1 shows the implementation of the salt spray test apparatus of the present invention.
Collected at each collection point by collection time in Example 1
It shows the relationship with the amount of salt water. Each collection point is shown in FIG.
It corresponds to the measurement point number. Salt spray time and sampling time
There is a linear relationship with the amount of salt water collected, 16 hours or 2
4 hours later, the amount of collection at each collection point and its variation
In predicting the salt spray time is 10 minutes,
No, but it turns out that 20 to 30 minutes is enough
Was.

[0035]

[Table 1]

[0036] The conventional salt spray test equipment is
The collector has a funnel at a predetermined position
Was. Therefore, the conventional measurement of the spray amount is
After placing the individual collectors in place, test
The operation is started with the lid of the tank closed.
After 24 hours, stop operation, open the lid and separate the funnel
It is necessary to take out and measure the spray amount
Was. However, in Example 1 of the salt spray test apparatus of the present invention,
Changes in the test conditions in the test chamber
The movement is minimized and the return time can be shortened.

[0037] At the time of shipping inspection of the salt spray test equipment, or
When adjusting the salt spray test equipment, use the specified spray amount collection method.
Run for at least 16 hours or 24 hours according to law
Spray volume collected by the volume collector is 1-2 mL / hour / 80
cm ² The amount of salt spray must be adjusted to
No. Usually, adjustment is not completed in one time, 6
Each time, adjustment and measurement are repeated. Conventional salt spray
In the volume adjustment method, always use a salt spray test for at least 24 hours.
Operation of the test equipment, measure the spray amount, and
If it exceeds the limit, investigate the cause and restart the device.
Repeat that. Therefore, the 6th pass
At least 7 days from the start date of adjustment to the pass date
Will do. On the other hand, using the salt spray test apparatus of the present invention
If the test is completed every 20 minutes,
The time is 1/72 of that of the conventional method, which is performed 24 hours at a time.
Yes. That is, if the value falls within the specified range at the sixth time,
Even if the final 24-hour operation check is performed,
It takes only two days from the date of acceptance to the passing date, and the time for adjusting the amount of salt spray is large.
This is a significant reduction. This effect can be obtained by adjusting the salt spray test equipment.
The greater the number of adjustments, the greater.

[0038] Therefore, the salt spray test apparatus of the present invention
If used, the time required for adjusting the amount of salt spray and shipping inspection time will be
The work efficiency and labor saving effect are extremely large.
It becomes a thing.

(Embodiment 2) FIG. 4 is a perspective view of a spray amount collector positioning member of Embodiment 2 of the salt spray test apparatus of the present invention. In Example 2 of the salt spray test apparatus of the present invention, the arm (10) extended from the support (9) is positioned at the position of the support (11) of the spray amount collector as shown in FIG. Adjustment, that is, a nesting mechanism (1) capable of position adjustment so as to match a predetermined spray amount collection position.
4) is provided. Further, in Example 1 of the salt spray test apparatus of the present invention, as shown in FIG. 2, four spray amount collector supporters (11) are provided. In the second embodiment, as shown in FIG. 4, the set supporter (9) further includes a spray amount collector support (11) for measuring the spray amount collection positions at a plurality of locations. A mounting groove (18) is provided. With this structure, the spray amount collector support (11) can be moved in the horizontal direction. Therefore, the spray amount collector support (11) can be arranged at any different distance from the spray tower and at any position.

Therefore, according to the second embodiment of the salt spray test apparatus of the present invention, variation in test conditions due to interruption of operation is minimized, spray time collection time is shortened, spray time adjustment time and shipping inspection time are significantly shortened, The workability can be improved, and the variation of the spray amount in the test tank can be more accurately grasped.

Incidentally, the sample size of the sample piece (7) to be subjected to the salt spray test is not always uniform. In Example 2 of the salt spray test apparatus of the present invention, the upper cylinder (1) of the spray tower was used.
Since the spray collecting position determining member (8) is fitted and mounted at an arbitrary height position of 3), it is also effective for adjusting the height of the spray amount collecting position according to the sample mounting position. is there.

FIG. 5 is an enlarged view of the spray amount collector of the second embodiment of the salt spray test apparatus of the present invention. Embodiment 2 of the present invention
The spray amount collector (16) has a cock (21) with holes at the upper and lower parts of the measuring cylinder (15), like the spray amount collector of Example 1 of the present invention. The point that the spray amount collector (16) according to the second embodiment of the present invention is different from the spray amount collector according to the first embodiment of the present invention is that an upwardly directed tube (22) is provided as an air bleeding unit in the measuring cylinder part (15). ). Therefore, according to the second embodiment of the salt spray test apparatus of the present invention, the spray liquid can be more smoothly collected in the measuring cylinder (15). When collecting the spray amount, the lower cock (21b) is closed and the upper cock (21a) is opened to collect the spray liquid in the measuring cylinder (15). By closing (21a) also, it is possible to prevent evaporation of the spray liquid, and after measuring the scale of the graduated cylinder part, open the cock (21b) with a hole at the bottom to discharge the accumulated spray liquid. Further, workability can be improved.

(Embodiment 3) FIG. 6 is a perspective view of a spray collecting position determining member of Embodiment 3 of the salt spray test apparatus of the present invention. In the third embodiment of the salt spray test apparatus of the present invention, the arm (10) has the nesting mechanism (1).
4) Not provided. On the other hand, the spray amount collector (16) is provided with a temperature sensor (25) and a level check device (19c). It is desirable that one such temperature sensor (25) and one level checking device (19c) be provided for each spray amount collector (16). Each spray amount collector (16) by the horizontal confirmation device (19c)
Is kept horizontal. In addition, temperature sensor (25)
By reading and accumulating the signals from, the temperature history as well as the spray amount at each collection location can be determined accurately.

Therefore, according to the third embodiment of the salt water spray test apparatus of the present invention, it is possible to minimize the fluctuation of the test conditions due to the interruption of the operation of the test apparatus and to collect the spray amount in a short time. This significantly reduces the time required to adjust the spray amount and the time required for shipping inspections.It also allows the operator to accurately know the variation in the spray amount and temperature in the test tank, and improves workability. In addition, there is an effect that it is possible to accurately know the history of each corrosion factor including the temperature as well as the spray amount on the test piece.

(Embodiment 4) FIG. 7 is an enlarged perspective view in a test tank of Embodiment 4 of the salt spray test apparatus of the present invention. In the figure, the upper lid and the like of the test tank are omitted, and only the main part is shown. Further, in Example 4 of the salt spray test apparatus of the present invention, one spray amount collector (16) is provided for each sample piece (7). A measuring cylinder part (15) is provided at the lower part of each spray amount collector (16). In addition,
Although not shown in FIG. 7, in the fourth embodiment of the salt spray test apparatus of the present invention, similarly to the third embodiment of the salt spray test apparatus of the present invention shown in FIG. A temperature sensor (25) and a level checking device (19c) are provided. In addition, when the spray amount per hour is 1-2 mL / 80 cm ² , if the capacity of the graduated cylinder part (15) is set to 48 mL or more with a funnel (12) having a diameter of 10 cm, for example, 1
The total amount of spray liquid for the entire test time of 6 hours or 24 hours can be stored. Therefore, according to the fourth embodiment of the salt spray test apparatus of the present invention, it is possible to know the exact spray amount received by each sample. In addition, a horizontal confirmation device (19
c) ensures that each spray volume collector (16) is level. In addition, by reading and accumulating the signal from the temperature sensor (25), not only the spray amount at each collection place but also an accurate temperature history can be determined.

[0046] Using Example 4 of the salt spray test apparatus of the present invention
For example, at the same time as removing the specimen after
At the same time, remove the spray volume collector adjacent to the sample
A water spray test can be performed. Also, the adjacent spray amount
Is the amount of liquid collected in the sampler an arbitrary spray amount?
It is also possible to take out the test after finishing the test in order.

[0047] Therefore, the salt spray test apparatus of the present invention
According to the fourth embodiment, the test conditions due to the interruption of the test device operation
Minimizing fluctuations and collecting the spray amount in a short time
The time required for spray volume adjustment and shipping inspection.
It can greatly reduce the amount of spray and temperature in the test chamber.
You can know the accuracy of the cracks and improve workability.
Not only the amount sprayed on each test piece, but also the temperature
Accurately know the history of each corrosion factor
You.

[0048] In addition, the test time in the spray amount of multiple stages
Enables a shortened salt spray test. Especially the slight spray
In a sample where the difference in the amount produces a large corrosion difference
Can also determine the amount of individual spray received by each sample.
Is effective in In addition, corrosion is reduced logarithmically with respect to the spray amount.
Even for samples with varying volumes, the rate of change
You can see the amount of spray.

[0049] Example 4 of the salt spray test apparatus of the present invention
Can measure the total spray amount of each sample piece.
Sprays collected in the spray volume collector for each sample piece
Remove the sample from which the amount of fog has reached the desired amount,
A test for calculating the relationship between the spray amount and corrosion can be performed for each piece.

[0050] Salt spray test equipment is continuously tested
In, the amount of the spray liquid collected in the spray amount collector is, for example,
1mL, 5mL, 10mL, 24mL, 48mL
One or more specimens and sprays adjacent to them
Remove the mass collector. Then, the degree of corrosion of each specimen is
Measure and remove the relationship between the amount of spray taken out and the amount collected in the collector.
Calculate by plotting.

[0051] That is, the implementation of the salt spray test apparatus of the present invention
Using Example 4, only necessary sample pieces and spray volume collector
Since it only needs to be taken out, it can be used in multiple stages of spray amount in a short time.
Test.

[0052] (Example 5 and Example 6) FIG. 8 is a schematic sectional view showing a spray nozzle portions of the fifth embodiment of the salt spray test apparatus of the present invention. In Example 5,
The tip of the air-side spray nozzle (5) is notched diagonally.
Since the cut at the tip of the nozzle has an inclination, the spray amount distribution in the test tank is biased. When the direction of the liquid-side spray nozzle (4) is set to be higher as shown in FIG. 8, the spray amount distribution in the test tank can be smaller in one direction of the liquid-side nozzle and larger on the opposite side. As the inclination angle, for example,
Can take 10 degrees. Fig. 9 shows an example of the spray volume collection position
1 is a schematic plan view of a test tank, for example, when the measurement point 1 is tilted so that the direction of the measurement point 1 is high and the direction of the measurement point 4 is low, 200 mL / hour / 80 at the measurement point 1.
cm ² , the amount of spray was 30 at measurement point 2 and measurement point 3.
0 mL / hour / 80 cm ² , 400 at measurement point 4
mL / hour / 80 cm ² . Increasing the inclination angle increases the spray distribution difference at the measurement point. Conversely, decreasing the inclination angle decreases the spray distribution difference at the measurement point. Can be

[0053] Example 6 of the salt spray test apparatus of the present invention,
No spray tower is provided, and a nozzle mounting table is disposed in the center of the salt water spray test apparatus of the present invention so that the spray nozzle is directly sprayed into the test tank from the spray nozzle of Example 5 of the present invention.

[0054] Thus, according to Example 5 or Example 6 of the salt spray test apparatus of the present invention, it is possible to make any nebulization weight distribution in the test chamber. Therefore, the variation of the spray amount in the test tank can be controlled, and the history of each corrosion factor such as the spray amount on each test piece can be accurately known. Further, the spray test can be performed in a plurality of stages at one time, so that the test with the spray amount in the plurality of stages can be performed in a short time, and the workability is improved.

[0055] (Examples 7 and 8, Example 9) FIG. 10 is a schematic sectional view showing a spray nozzle portion of Example 7 of the salt spray test apparatus of the present invention. FIG. 11 is a schematic cross-sectional view showing a spray nozzle portion of Embodiment 8 of the salt spray test apparatus of the present invention. FIG. 12 is a schematic cross-sectional view showing a spray nozzle portion of Embodiment 9 of the salt spray test apparatus of the present invention. In the seventh, eighth, and ninth embodiments, a cap (20) having a pointed top and a cutout at the tip of the air-side spray nozzle (5) so as to allow air to flow therethrough is provided. Have. In the seventh embodiment, the cut end is a liquid side spray nozzle (4).
Direction is lower. As the inclination angle, for example, 1
0 degrees can be taken. Therefore, the spray amount distribution in the test tank increases in one direction of the liquid-side spray nozzle (4), and decreases in the opposite side. In the eighth embodiment, the direction of the liquid-side spray nozzle (4) is higher in the cut end. The inclination angle can be, for example, 10 degrees. Therefore, the spray amount distribution in the test tank decreases in one direction of the liquid side spray nozzle and increases in the opposite side. In the ninth embodiment, the cut is horizontal. Therefore, the spray amount distribution in the test tank becomes uniform.

[0056] Thus, Example 7 or Example 8 of salt spray testing apparatus of the present invention, according to Example 9, it is possible to make any nebulization weight distribution in the test chamber. In addition, by changing the direction of the cap, the amount of the spray amount distribution in any direction can be changed in any direction, and the inclination of the spray amount distribution can be changed by arbitrarily changing the height difference of the cut end. it can. In addition, since it is only necessary to put a cap having an arbitrary inclination, it is more convenient to obtain various spray distributions.

[0057] Thus, Example 7 or Example 8 of salt spray testing apparatus of the present invention, according to Example 9, more conveniently, can control the variation in the spray quantity of the test tank, spray into each specimen It is possible to accurately know the history of each corrosion factor such as the amount, and it is possible to perform a test in a plurality of spray amounts in a short time. Therefore, workability is further improved.

[0058] (Examples 10 and 11) FIG. 13 is a structural view of a spray tower portion of Example 10 of the salt spray test apparatus of the present invention. FIG. 14 is a structural diagram of a spray tower part of Embodiment 11 of the salt water spray test apparatus of the present invention. In Example 10 of the salt spray test apparatus of the present invention, the opening of the upper cylinder (13) of the spray tower (3) is inclined.
Further, in Embodiment 11 of the salt spray test apparatus of the present invention, a circular pipe (23) having an inclined top opening is provided above the upper cylindrical body (13). As the inclination angle, for example, 1
0 degrees can be taken. The circular tube (23) is removable.

In the eleventh embodiment of the salt spray test apparatus according to the present invention, the operator only needs to cover the circular pipe (23) having an arbitrary inclination, so that it is more convenient when various spray distributions are desired. .

[0060] Thus, according to Example 10 or Example 11 of salt spray testing apparatus of the present invention, it is possible to make any nebulization weight distribution in the test chamber.

[0061] Thus, according to Example 10 or Example 11 of salt spray testing apparatus of the present invention, can control the variation in the spray quantity of the test tank, and the workability is improved, also, a plurality of steps in a short time A test can be performed on the spray amount.

[0062] Example 10 of the salt spray test apparatus of the present invention
According to this, the distribution of the spray amount in the test tank was biased,
It can measure the degree of corrosion of the sample for multiple levels of spraying
You. Example 4 of the salt spray test apparatus of the invention, and further Example
The combination of Examples 5 to 11 is one by one
The total spray amount can be measured and the spray amount distribution in the test tank can be measured.
Not even , You can control the amount of spray at any place
It is a salt spray test apparatus, for example, the salt spray test of the present invention.
Example 4 is a combination of Example 4 and Example 10 of the test apparatus.
Can be tested as follows.

[0063] The cross section of the opening of the upper cylinder of the spray tower is inclined.
At the measurement point 1 shown in FIG. 200mL / hr
Between / 80cm ² Spray at measurement points 2 and 3
300mL / hour / 80cm ² At measurement point 4
Is 400mL / hour / 80cm ² Adjust as follows. Jet
Set one fog collector on each sample piece. And
For example, after one hour, remove all spray volume collectors and specimens.
Take out. And the spray amount of each spray amount collector
Is measured. Also, the degree of corrosion of each sample piece is measured.
From the results, the total amount of spray was reduced to 200 mL to 400 mL.
The degree of corrosion of the sample for three levels of spraying volume
I do.

[0064] Conventionally, the spray volume distribution in the test tank was adjusted uniformly.
The test was performed after adjusting the spray amount in multiple stages.
In order to measure the degree of corrosion of the material
Must be performed, it takes time for testing, and the work efficiency is poor.
And costly. Moreover, for each test piece
Spray volume and degree of corrosion
Although the exact relationship with the salt spray was not clear,
In the case of combining Example 4 with Example 4 of the test apparatus,
These disadvantages can be overcome.

[0065] According to this device, cost performance
And the performance of each corrosion factor such as the amount of spray on each test piece.
You can know the history accurately. For example, a three-stage test
To perform, according to the present invention, the test time is three minutes less than the conventional one.
1 or less.

[0066] FIG. 15 shows a spray amount collection position example 2.
It is a schematic plan view of a test tank. The salt spray test apparatus of the present invention
Conventionally at the four corners of the test tank in addition to the spray amount collection position in Example 1.
And the amount of salt water in the four corner funnels
Collect 16 or 24 hours after the start of the fog. Other structures
The composition is the same as that of Example 1 of the salt spray test apparatus of the present invention.
You. According to this device, there is no variation in the amount of salt spray
After confirming that the spraying started within 20 to 30 minutes,
Check that the specified amount of salt water is sprayed at the specified time
it can. Therefore, the time required to adjust the amount of salt spray is reduced.
And the number of days for the entire test is reduced,
Also, accuracy is satisfied.

[0067]

The salt spray test apparatus of the present invention is as described above, and therefore, when measuring the spray amount, it minimizes fluctuations in test conditions due to interruption of operation, shortens the time for collecting the spray amount,
Dramatically shorten spray time adjustment time and shipping inspection time, accurately grasp the spray amount variation in the test tank, control the spray amount variation, and accurately record the history of each corrosion factor such as spray amount on each test piece. It is possible to grasp, shorten the test time and improve the workability of the spray amount in multiple stages.

[Brief description of the drawings]

FIG. 1 is a perspective view of a salt spray test apparatus according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a spray collecting position determining member of Embodiment 1 of the salt spray test apparatus of the present invention.

FIG. 3 is a plan view showing a position of a spray amount collector of a conventional salt spray test apparatus.

FIG. 4 is a perspective view of a spray amount collecting device positioning member according to a second embodiment of the salt spray test apparatus of the present invention.

FIG. 5 is an enlarged view of a spray amount collector according to a second embodiment of the salt spray test apparatus of the present invention.

FIG. 6 is a perspective view of a spray collecting position determining member of Embodiment 3 of the salt spray test apparatus of the present invention.

FIG. 7 is an enlarged perspective view of the inside of a test tank of Example 4 of the salt spray test apparatus of the present invention.

FIG. 8 is a schematic sectional view showing a spray nozzle portion of a salt spray test apparatus according to a fifth embodiment of the present invention.

FIG. 9 is a schematic plan view of a test tank showing a spray amount collecting position example 1 ;

FIG. 10 is a schematic sectional view showing a spray nozzle portion of a salt water spray test apparatus according to a seventh embodiment of the present invention.

FIG. 11 is a schematic cross-sectional view showing a spray nozzle portion of Embodiment 8 of the salt spray test apparatus of the present invention.

FIG. 12 is a schematic sectional view showing a spray nozzle portion of a ninth embodiment of the salt spray test apparatus of the present invention.

FIG. 13 is a structural diagram of a spray tower portion of Embodiment 10 of the salt spray test apparatus of the present invention.

FIG. 14 is a structural view of a spray tower part of Embodiment 11 of the salt spray test apparatus of the present invention.

FIG. 15 is a schematic plan view of a test tank showing a spray amount collecting position example 2 ;

[Explanation of symbols]

1 Salt spray test equipment 2 Test tank 3 Spray tower 4 Liquid side spray nozzle 5 Air side spray nozzle 6 Sample holder 7 Sample pieces 8 Positioning of spray collection 9 support 10 arms 11 Spray volume collector support 12 funnels 13 Upper cylinder 14 Nesting mechanism 15 Measuring cylinder 16 Spray volume collector 17 Collector 18 Mounting groove 19 Level check device 20 caps 21 cock with hole 22 tubes 23 circular tube 24 lid 25 Temperature sensor

────────────────────────────────────────────────── ─── Continued on the front page (56) References JIS Z 2371: 2000 (58) Fields investigated (Int. Cl. ⁷ , DB name) G01N 17/00 JICST file (JOIS)

Claims (10)

(57) [Claims] 1. A salt water spray test apparatus having a spray tower in a test tank, comprising: (a) means for pivotally fitting to the spray tower; (b) radially from said pivotally fitting means with the spray tower as a center axis. And (c) a spray amount collecting device disposed on each of the arms.
Or one or more spray collecting means having a plurality of spray amount collecting device supporting means , and the spray amount collecting device is provided for each sample piece adjacent to each sample piece.
It is arranged, for each sample piece in each spray amount collector
Spray volume can be collected individually and sprayed into the test tank
A means to change the degree of distribution by giving directionality to the spray distribution
A salt spray test device having: 2. The salt spray test apparatus according to claim 1, wherein the arm is extendable and retractable. 3. The salt spray test apparatus according to claim 1, wherein the spray tower has a level checking device, and the spray collecting position determining member is kept horizontal. 4. The spray amount collecting device is a funnel having a graduated cylinder portion having an air bleeding device at a lower portion thereof, and having a cock with holes at an upper portion and a lower portion of the graduated cylinder portion. The salt spray test device according to claim 3. Wherein said spray amount harvester each further salt spray test device as claimed in any one of claims 4, characterized in that it comprises a temperature sensor and a horizontal check device. 6. The air-side spray nozzle, wherein the means for imparting directionality to the spray distribution and changing the degree of distribution is an air-side spray nozzle notched so that its tip is inclined.
The salt spray test apparatus according to any one of claims 1 to 5. 7. A means for giving directionality to the spray distribution and changing the degree of distribution is provided at the tip of the air-side spray nozzle, the top of the head is pointed, and the notch is provided so as to conduct air. The salt spray test device according to any one of claims 1 to 5 , wherein the cap is a cap. 8. The salt spray test apparatus according to claim 7, wherein the cutout of the cap is not horizontal. 9. The means for imparting directionality to the spray distribution and changing the degree of distribution is a circular pipe provided at the top of a cylindrical part of the spray tower, the top opening of which is inclined. The salt spray test apparatus according to any one of claims 1 to 5 , wherein 10. The spraying apparatus according to claim 1, wherein the means for giving directionality to the spray distribution and changing the degree of distribution has an opening of a cylindrical portion of the spray tower inclined .
The salt spray test apparatus according to any one of the above.