Method of capillary nondestructive testing

FIELD: analyzing and investigating materials.

SUBSTANCE: method comprises processing the surface with a water-soluble penetrating agent, applying developer, recording defects, and washing the surface with water. Each of the washings is carried out in two baths arranged in series, with fresh water being supplied to the second bath in amount that is determined by the permissible concentration of contaminant and overflowing the water from the second bath to the first one in the direction opposite to the movement of the article.

EFFECT: improved method and reduced cost of control.

1 dwg

 

The invention relates to the field of non-destructive testing of surfaces and defects by applying a product Vodopyanova of penetrant and can be used in the transport and power engineering for products from various materials.

There is a method of nondestructive testing of surface defects with drawing on the product Vodopyanova of penetrant and then remove any excess wash water containing the emulsifier. Emerging waste water is exposed to the reagent handling electrolyte and bentonite clay and subsequent sedimentation. Purified water is returned for reuse, i.e. it reduces the consumption of washing water. The disadvantages of the method are the need for additional reagents and equipment for purification of the emerging waste water, which increases the cost method non-destructive testing, as well as the formation of toxic sludge, i.e. environmental imperfection of the method [1].

There is a method of detecting defects, which uses low logomyway penetrant that does not contain detergents. When removing excess penetrant from the surface water waste water is formed, when defending the majority of poorly soluble penetrant accumulated in the floating h is the water surface layer. In the mass of distilled wash water remains a small amount of dissolved penetrant, which is extracted using halide-hydrocarbon solvent, such as perchlorethylene, etc. Then the solvent Argonauts in the distillation column, and the dry residue of penetrant is mixed with the collected floating layer and re-used. Purified in water extractor is also submitted for re-use. The disadvantage of this method is the need for energy-intensive and bulky equipment and more expensive and toxic chemicals (solvents) to reduce water consumption for washing. The extractor and the distillation column are structurally complex technological equipment, to the same unsafe operation [2].

The closest to the essential features of the claimed technical solution is a method of nondestructive testing of surfaces and defects, which consists in applying to controlled surface Vodopyanova, but poorly soluble in water and not containing surfactant penetrant, and removing excess penetrant water. Rinsing is carried out in two stages clean heated to 38...65°With water supplied from the nozzles individually in each step of the common cut is rvoir clean water. The main part of the excess penetrant from the surface is washed off in the first stage. In the second stage leaching from the surface are removed the remaining traces of penetrant water supplied in the form of a mist. Contaminated wash water from both stages of leaching is diverted into the reservoir-sedimentation tank, where the stratification and the formation of floating on the water surface layer of penetrant corresponding original composition and therefore suitable for reuse. All of distilled water is discharged into the sewer [3].

There is a method of nondestructive testing has limited application associated with the requirement that the lack of penetrant surfactant and other components, dispersing and stabilizing colloid-dispersed particles of the components of penetrant formed in the wash water.

Also the way to its implementation requires a large consumption of water due to the use of nozzles in the two stages of leaching, i.e. the process is hygroscopic and, therefore, with a large volume of liquid waste. Low speed the settling process wastewater prior to discharge into the sewer leads to the necessity of increasing the number of tanks to provide standards for discharge. Furthermore, the method is not only water-intensive, but also energy-intensive, since all use the controls on the washing water is heated to a predetermined temperature.

The invention aims to remedy these disadvantages and environmental improvement of the technology of non-destructive control surface vodosnabzhenie penetrants, including the reduction of water consumption and the volume of liquid waste, energy process and implementation of it in a structurally simple and safe performance.

The problem is solved in that in the method of capillary non-destructive testing, including the operation of cleaning the surface of the product, the processing surface logomyway a penetrant, removing excess penetrant cleansing liquid, application developer, the registration of defects in UV light and holding washing water, according to the invention each holding washing water is carried out not less than two consecutive baths with a supply of clean water in the second in the amount determined maximum allowable concentration of contaminant in it, and the water overflow from the second bath in the first direction opposite to the movement of the product.

The claimed invention is illustrated in the drawing, which shows the technological scheme that implements the method of non-destructive penetrant testing of defect 1, the route on which the scheme is shown by bold arrow 2. At the same time as in demiveemon use of penetrant penetrant LV-6A, containing the fluorescent yellow-green 490 RT General formula C18H10N2O in a mixture of butyl alcohol, ditolylmethane and Cintanya DC-10. As degreasing and cleaning fluid using an aqueous solution of Neonols AF 9/12 (ethoxylated limit alcohols), and as a developer - PR-1, containing white nitroamine, collodion and acetone.

The installation contains 3 bath filled with a solution of Neonols AF 9/12, the washing bath 4 and 5 are filled with heated water. Tub 5 with one side connected to a source (not shown) of pure heated water through the collector 6 with shut-off and regulating valve 7, and on the opposite side of the overflow tray 8 is connected with the tub 4. When the liquid level in the tub 5 is located above the fluid level in the tub 4 is not less than 20 mm tub 4 is equipped with a collector (9) discharge of polluted water and overflow pocket 10, United pipe 11 with a collection drive (not shown) of liquid waste. The pipe 11 has a valve 12 and the outlet 13 and a valve 14, connecting bath 4 bath 3. The installation also contains a drying Cabinet 15, the tub 16, filled with penetrant LV-6A and rinse the bath 17 and 18 filled with heated water. Bath 18 with one side connected to a source (not shown) of pure heated water through the manifold 19 with a valve 0, and on the opposite side of the overflow tray 21 is connected with the tub 17. When the liquid level in the tub 18 is located above the fluid level in the bath 17 is not less than 20 mm bath 17 is equipped with a manifold 22 discharge of contaminated water, overflow pocket 23, United pipe 24 with the collector-storage (not shown) of liquid waste. The installation also contains a tub 25 is filled with a cleaning fluid solution Neonols AF 9/12, and the washing bath 26 and 27, filled with heated water. Bath 27 on the one hand is connected to a source (not shown) of pure heated water through a manifold 28 with a valve 29, and on the opposite side of the overflow tray 30 is connected with the tub 26. When the liquid level in the tub 27 is located above the fluid level in the tub 26 is not less than 20 mm tub 26 is equipped with a manifold 31 discharge of contaminated water and overflow pocket 32 that is connected by a pipe 33 with the collector-storage of liquid wastes (not shown). The pipe 33 has a valve 34 and the outlet 35 to the valve 36, which connects the tub 26 with bath 25. The installation also has a Desk 37 for cleaning and drying of the product 1, painting chamber 38 for the application developer IV-1 and table 39 source 40 UV rays.

The method is as follows.

Article 1 subject of the capillary is non-destructive testing, immersed in a bath 3, where the heated solution Neonols AF 9/12 it clear of mechanical and grease. The purified product 1 is removed from the bath and incubated for 3 over the surface of the solution within it, for draining any excess back into the tub 3. Then the product 1 is directed along the route indicated by the arrow 2, flushing hot water from the remnants of a solution of Neonols AF 9/12 dipping first into the tub 4 which removes the major part (over 90%) of surface contamination. Then the article 1 is removed from the bath 4, stand above the liquid surface therein for draining excess back into the tub 4. The remaining impurities are removed by dipping in a bath 5, followed by exposure above the liquid surface therein for draining excess back into the tub 5. Clean heated water is fed into the tub 5 through the manifold 6 valve 7 only when reaching into the wash tub 5 maximum allowable concentration of Neonols AF 9/12 and in quantities that support the value of its maximum allowable concentration. Slightly contaminated by Neonol AF 9/12 water from the bath 5 tray 8 flows into the tub 4 with highly contaminated water is mixed with it, simultaneously diluting it. Flow slightly contaminated water is provided by the difference of liquid levels in said tanks (not less than 20 mm) and a flow of heated pure water in the tub 5. And bitok highly contaminated water from the bath 4 is discharged through the collector 9, overflow pocket 10, pipe 11 with a valve 12 (when closed valve 14) collector-storage of liquid wastes (not shown). Thus, there is a directional flow of fluid toward the movement of goods 1.

Move items from 1 area highly contaminated liquid medium in the region of less contaminated liquid medium reduces the polarizing effect of the contamination on the surface of the product and the reinforcing effect of the diffusion of impurities from the surface into the liquid, i.e. intensifying the process of washing with 1.

To compensate solution Neonols AF 9/12 in the tub 3, connected with carrying out of solution in the surface of the product 1 and the evaporation of water from the mirror solution, close the valve 12 and the pipe 11, to open the valve 14 in the pipe 13 and serves and takes the Neonol AF 9/12 wash water from the bath 4 bath 3.

Washed from the Neonols AF 9/12 product 1 is subjected to drying in a drying Cabinet 15 and then is directed into the tub 16 to the processing of the penetrant LV-6A by dipping in his solution for filling the capillary cavity defects. After dipping and excerpts of articles 1 above the mirror solution LV-6A for draining excess penetrant back into the tub 16, the product 1 is directed along the route indicated by the arrow 2, flushing hot water from the remnants of the components of penetrant first into the tub 17, where delaetsa the main part (>90%) of surface contamination. After exposure of the product 1 above the liquid surface for draining excess back into the tub 17 product 1 is washed with hot water in the bath 18 which removes the remaining surface contamination. Clean heated water is supplied into the tub 18 through the manifold 19 with valve 20 only when reaching into the wash tub 18 maximum allowable concentration of fluorescent yellow-green 490 RT dictating the quality of capillary non-destructive testing under ultraviolet light. Clean heated water is fed in quantities that support the value of the maximum allowable concentration of phosphor in the wash water bath 18. The slightly components of penetrant wash water from the tub 18 to the tray 21 flows into the tub 17 where it is mixed with highly contaminated water, simultaneously diluting it. Flow slightly contaminated water from the bath 18 in the tub with 17 highly contaminated water is provided by the difference of the levels of the liquids in these tanks (not less than 20 mm) and a supply of clean hot water into the tub 18. An excess of highly contaminated water from the bath 17 is discharged through the manifold 22, the overflow pocket 23, the pipe 24 into the collection storage of liquid wastes (not shown). Thus, there is a directional flow of fluid towards the product 1.

To exclude the possibility of false features and to enhance the contrast defects, product 1 are immersed in a bath of 25 with heated cleaning fluid - Neonol AF 9/12, take out and stand above the surface of the solution for draining surplus back into the tub 25. The product is then washed with 1 heated water in the first tub 26, followed by exposure above the liquid surface for draining the remnants of wash water, then washed in the bath 27 is also followed by exposure above the mirror of liquid in it. In the bath 27 serves pure heated water reservoir 28 with valve 29 when reaching into the wash water maximum allowable concentration of fluorescent yellow-green 490 RT in number, supporting the value of the maximum allowable concentration of phosphor in the wash tub 27. Slightly contaminated wash water from the bath 27 flows through the tray 30 into the bath 26 where it is mixed with more contaminated water, simultaneously diluting it.

Flow slightly contaminated wash water from the bath 27 into the bath 26 more contaminated water is provided by the difference of liquid levels in these tubs and a supply of clean hot water into the tub 27. An excess of more contaminated water from the bath 26 is discharged through the manifold 31, a tray pocket 32, the pipe 33 with the valve 34 in the collection storage of liquid wastes (not shown). Thus, there is a directional flow of fluid towards the product 1./p>

To compensate solution Neonols AF 9/12 in the bath 25, connected with carrying out of solution in the surface of the product 1 and the evaporation of water from the mirror solution, close the valve 34 in the pipe 33 and open the valve 36 on the outlet 35 connecting the tub 26 with bath 25.

After washing with 1 bath 27 is transferred onto the table 37 for cleaning and drying, and then sent to the paint chamber 38, where the surface of the product 1 is applied by spraying the developer PR-1 for the formation of a pattern in the locations of the defects. Dried subsequently, the product 1 is transferred onto the table 39 to a source 40 of ultraviolet rays for registration of defects.

Consider the experimental examples of embodiment of the invention on a pilot production line control drives penetrant fluorescent penetrant inspection of the highest class of sensitivity (the minimum size of the defects of less than 1 μm).

Were used in the experiments baths displacement of 380 DM3each, CDs and reference samples with a total area of 1.57 m2of heat-resistant alloys with roughness Rz20, in which the defects had a width of disclosure 1 μm or more, i.e. provided a sensitivity close to the level of sensitivity of the method. When the variation of process parameters on the standards assessed quality control. Experiments were started after the pre is satisfactory water pollution in the wash baths relevant solutions: degreasing solution a solution of penetrant and cleansing fluid. When the second washing tubs in the direction of movement of the disks and reference samples, the concentration of pollutants has reached the limit value (Cp), opened the filing them in clean hot water.

Example 1

Disks and reference samples, fat-free in the tub 3 for 5 min with a solution containing 30 g/DM3The neonols AF 9/12 and having a temperature of 50...60°C, kept for 30 with over bath and then sent to the washing water heated to 35...40°C. First product was immersed for 2 min in a bath 4, withstood 30 with over the bath, and then transferred into the bath 5, which is applied through the manifold 6 clean heated to 35...40°With water in an amount corresponding to the specific flow rate of 0.60 DM3/m2. Rinsing of the articles in the bath 5 was carried out by immersion for 2 min with exposure over the bath 5 in for 30 s at the same time the excess water from the bath 5 tray 8 flowed into the tub 4, and from 4 baths was given through the header 9, overflow pocket 10 and, when closed, the valve 14 and open the valve 12, through the pipeline 11 is discharged into the collection drive (not shown).

Immediately after lifting drive and reference samples from the bath 5 was collected a water sample for analysis to determine the content of Neonols AF 9/12 in the wash water. According to the analysis, the working concentration of Neonols AF 9/12 amounted To n p=235 mg/DM3that was close to the maximum permissible valuenn=250 mg/DM3but less of it.

Washed disks and reference samples were dried in a drying Cabinet 15 for 1 h at a temperature of 120°C. the Dried disks and reference samples were processed in the tub 16 penetrant LV-6A, containing in the composition of 8.7 g/DM3fluorescent yellow-green 490 RT for 3 min, then raised and kept for 30 with over the bath 16, and then immersed for 2 min in wash tub 17 filled heated to 35...40°wash With water, followed by exposure for 30 with over the bath 17. The product was then washed in the tub 18, also filled with wash water through the collector 19 filed heated to 35...40°With pure water in an amount corresponding to the specific consumption 0,63 DM3/m2. The leaching was carried out by dipping in a bath 18 for 2 min, followed by exposure to them over the bath 18 for 30 sec. Excess water from the bath 18 to the tray 21 is flowed into the tub 17, where through the manifold 22, the overflow pocket 23 and the pipe 24 is discharged into the collection storage of liquid wastes (not shown).

Immediately after lifting drive and reference samples from the bath 18, a sample was taken of wash water for analysis to determine the content of the fluorescent yellow-green 490 RT. According to the analysis of RA is OCA concentration of the phosphor was With LFp=225 mg/DM3that was close to the maximum permissible valueLFp=240 mg/DM, but less of it.

Washed disks and reference samples were subjected to treatment with a cleansing liquid containing 30 g/DM3The neonols AF 9/12 and having a temperature of 30°C. For this product is immersed in a bath 25 for 2 min and then 30 s was passed over the bath 25. Then the product was washed by immersion for 2 min in a bath 26 with water at a temperature of 35...40°followed by exposure over the bath 26 for 30 sec. After the product was washed by immersion for 2 min in a bath 27 filled with water with a temperature of 35...40°C, followed by exposure over the bath 27 within 30 seconds of Pure heated to 35...40°water was supplied into the tub 27 in the manifold 28 with a valve 29 in the number corresponding to the specific flow rate of 0.60 DM3/m2. At the same time the excess water from the bath 27 in the tray 30 is flowed into the bath 26, and then it was given through the manifold 31, a tray pocket 32 and a closed valve 36 and open valve 34 in the pipe 33 is discharged into the collection storage of liquid wastes (not shown).

Immediately after lifting drive and reference samples from the bath 27 took a water sample for analysis to determine the content of phosphor in the wash water bath 27. According to the analysis, the working concentration lumino the ora was less than the maximum allowable values

Washed disks and reference samples were wiped with a napkin and dried air having a temperature of 20...24°C, for 15 min on the table 37. After drying, the product was placed in a spray chamber 38, where it is evenly applied the developer PR-1 from the spray gun (not shown) with a flow rate of 200 g/m2surface. After 30 min after application developer IV-1 reference samples were transferred to table 39 with a source of ultraviolet rays 40 and carried out the inspection surface, in order to identify known in advance of a reference group of defects. The survey revealed the 76 defects of the 81 known, i.e., obtained a good result.

Total specific consumption of clean water for rinsing after all operations amounted to 1.83 DM3/m2without taking into account water consumption for natural losses (removal of the product surface, evaporation from the bath and so on).

Example 2

The experiment was performed when indicated in example 1, the conditions and parameters. The difference consisted in the reduction of specific consumption of clean hot water in the wash tub 18 during the flushing of the penetrant. Water was supplied in an amount corresponding to the specific flow rate of 0.39 DM3/m2that is significantly lower than the values in example 1 (0,63 DM3/m2).

Immediately after recovery disks and this is ment samples from the bath 18, a sample was taken of wash water for analysis to determine the content of the phosphor is a yellow-green 490 RT. According to the analysis, the working concentration of the phosphor is increased toabove the maximum permissible values of

In the future, after processing products cleaning solution of Neonols AF 9/12 contaminated phosphor, the product was washed in baths 26 and 27 with a specific consumption of clean hot water 0,60 DM3/m2as in example 1. However, analysis of water samples from the wash bath 27 showed that the working concentration of the phosphor wasand this is noticeably higher than the maximum allowable concentration of phosphor

After processing the dried product developer PR-1 and examination of their surface on the table 39 under a source of ultraviolet rays 40 in order to detect defects was found to intense glowing background, i.e. the result of the experiment was unsatisfactory due to the reduction of specific consumption of clean water for leaching and increase the concentration of the phosphor in the tub 18.

Total specific consumption of clean water for all washing amounted to 1.59 DM3/m2.

Example 3

The experiment was performed when indicated in example 1, the conditions and parameters. The difference was the change in the specific consumption of clean hot water in the wash tub 27 after machining the cleaning fluid, slightly contaminated with penetrant. The specific consumption of clean hot water amounted to 0.80 DM3/m2that is higher than the value in example 1 (0,60 DM3/m2). Immediately after lifting drive and reference samples from the bath 27 a sample was taken of wash water for analysis to determine the content of the phosphor is a yellow-green 490 RT. According to the analysis, the working concentration of the phosphor wasthat is about two times lower than the maximum permissible

After processing the dried product developer PR-1 and the inspection surface on the table 39 in order to detect defects in ultraviolet light was detected 74 defect 81, i.e., obtained a good result.

Total specific water consumption for all wash was 2,03 DM3/m2.

Example 4

In current industrial practice of capillary non-destructive testing using Vodopyanova of penetrant process of leaching is carried dushirovanie through a nozzle.

Let's see the results of the conventional calculation of specific consumption of water by a two-stage leaching using a standard nozzles in the same experimental baths.

If the length of the wash baths 1 m in accordance with the production practices required by 5 nozzles on both sides of the bath. Produces lnost one typical nozzle is 0.12 DM 3/s operation Time of the injector 12 C. Therefore, the consumption of water injectors will be:

Q=n×ff×τ=10×0,12×12=14.4 DM3,

where n is the number of the nozzles;

ffperformance standard nozzles;

τ - time of the injectors.

When the area of leached product 1.57 m2and two-stage washing system specific consumption of clean water washing after each operation will be:

Given that there are three inter-operational leaching, the total specific consumption of water will make 54,9 DM3/m2.

All the experimental and calculated data are given in examples 1-4 are summarized in the table.

As can be seen from the table, a good result of capillary non-destructive testing using Vodopyanova fluorescent penetrant was obtained in examples 1 and 3, when the concentration of phosphor - main contaminant - second wash bath was below the limit value, i.eless. While the total specific consumption of washing water was 1.8 to 2.0 DM3/m2that is almost 30 times less than in the current industrial practice of washing dushirovanie nozzles (example 4).

The invention allows the process of capillary nerazzuri the corresponding control not only with a minimum consumption of clean water for all in-process washing, but with the formation of the minimum volumes of liquid wastes enriched with organic pollutants that increase their caloric content and make it more real, for example, the use of thermal methods for their disposal.

The accumulation of this pollutant, i.e. components degreasing and cleaning fluid in the first direction of travel products wash tub, allows the use of water from the first bath as a make-up liquid bath filled with a degreasing and cleaning fluids to compensate for natural losses instead of using additional reagents that ensures their savings.

Because the shop leaching requires not only clean, but also heated to a predetermined temperature water, reduction of water consumption of the process is energy-saving effect.

Thus, the invention makes the process of capillary non-destructive testing resource - and energy-saving, low-waste and environmentally more perfect. The proposed technology can be used for non-destructive testing using any vagomimetic of penetrants, and it is implemented in a structurally simple and safe performance.

Sources of information

1. U.S. patent No. 3528284, CL 73-104. Published 15.09.1970,

2. U.S. patent No. 3926044, CL 73-104. SDA is published 16.12.1975,

3. U.S. patent No. 3949601, CL 73-104. Published 13.04.1976,

The method of capillary non-destructive testing, including the operation of cleaning the surface of the product, the processing surface logomyway a penetrant, removing excess penetrant cleansing liquid, application developer, recording defects and holding washing water, characterized in that each shop leaching is carried out not less than two consecutive baths with a supply of clean water in the second in the amount determined maximum allowable concentration of contaminant in it, and the water overflow from the second bath in the first direction opposite to the movement of the product.



 

Same patents:

FIELD: nondestructive inspection.

SUBSTANCE: color chemical reaction between penetrant and developer is used for defect indication. Penetrant has surface-active substance (SAS), ethyl alcohol, water, boric acid. Developer has glycerin, kaolin, SAS, ethyl alcohol, bromine-thymol blue indicator and PH regulator for achieving initial blue-green color.

EFFECT: improved reliability.

FIELD: measuring processes and devices.

SUBSTANCE: penetrating agent used for detecting on oleophilic surface flaws with opening until l0.5 micrometers contains "main crimson" dyeing agent of fireproofing compounds with quinoid group and in addition it contains fatty acid and benzyl benzoate. Said ingredients are taken in relation (mass %): dyeing agent, 3.0 - 5.0; non-ionogenic surface active matter, 0.5 -1.0; fatty acid, 10.0 - 15.0; benzyl benzoate, 5.0 -10.0; hydrocarbon base - up to 100.

EFFECT: enhance accuracy and responsibility of measurements.

3 cl, 2 tbl

FIELD: analytical chemistry.

SUBSTANCE: for the purpose to detect defects at opening about 1 mcm at coarse surface a penetrating agent contains "the main raspberry" dyestuff of antipyrinic group with quinoid group and non-ionogenic SAS and it, additionally, contains acidic supplement , moreover, these ingredients should be taken at the following ratio (weight%): the main raspberry dyestuff 3.0-5.0, non-ionogenic SAS 0.5-1.0, acid - at the quantity from low acidic to approximately neutral pH, water - the rest.

EFFECT: higher sensitivity.

3 cl, 2 tbl

The invention relates to the oil industry, and in particular to processes for the preparation of oil, gas and water, in particular, at a late stage of oil field development

The invention relates to liquid penetrant inspection, and in particular to compositions of colored penetrants used for color control products responsible destination
The invention relates to an indicator penetrants used in penetrant methods of inspection of the various parts, and can be used in automotive, aviation, aerospace industries
The invention relates to an indicator penetrants used in penetrant methods of inspection of various parts, components and assemblies, and can be used in automotive, aviation, aerospace and other industries

The invention relates to an indicator penetrants used in penetrant methods of inspection of various parts, components and assemblies, and can be used in automotive, aviation, aerospace and other industries
The invention relates to the field of nondestructive testing of materials and products
The invention relates to non-destructive methods of control of materials and products

FIELD: analytical chemistry.

SUBSTANCE: for the purpose to detect defects at opening about 1 mcm at coarse surface a penetrating agent contains "the main raspberry" dyestuff of antipyrinic group with quinoid group and non-ionogenic SAS and it, additionally, contains acidic supplement , moreover, these ingredients should be taken at the following ratio (weight%): the main raspberry dyestuff 3.0-5.0, non-ionogenic SAS 0.5-1.0, acid - at the quantity from low acidic to approximately neutral pH, water - the rest.

EFFECT: higher sensitivity.

3 cl, 2 tbl

FIELD: measuring processes and devices.

SUBSTANCE: penetrating agent used for detecting on oleophilic surface flaws with opening until l0.5 micrometers contains "main crimson" dyeing agent of fireproofing compounds with quinoid group and in addition it contains fatty acid and benzyl benzoate. Said ingredients are taken in relation (mass %): dyeing agent, 3.0 - 5.0; non-ionogenic surface active matter, 0.5 -1.0; fatty acid, 10.0 - 15.0; benzyl benzoate, 5.0 -10.0; hydrocarbon base - up to 100.

EFFECT: enhance accuracy and responsibility of measurements.

3 cl, 2 tbl

FIELD: nondestructive inspection.

SUBSTANCE: color chemical reaction between penetrant and developer is used for defect indication. Penetrant has surface-active substance (SAS), ethyl alcohol, water, boric acid. Developer has glycerin, kaolin, SAS, ethyl alcohol, bromine-thymol blue indicator and PH regulator for achieving initial blue-green color.

EFFECT: improved reliability.

FIELD: analyzing and investigating materials.

SUBSTANCE: method comprises processing the surface with a water-soluble penetrating agent, applying developer, recording defects, and washing the surface with water. Each of the washings is carried out in two baths arranged in series, with fresh water being supplied to the second bath in amount that is determined by the permissible concentration of contaminant and overflowing the water from the second bath to the first one in the direction opposite to the movement of the article.

EFFECT: improved method and reduced cost of control.

1 dwg

FIELD: capillary defectoscopy; compositions of the color penetrants.

SUBSTANCE: the invention is pertaining to the color capillary defectoscopy, in particular, to the compositions of the color penetrants applied to the color control over the items of the high-duty. The penetrant contains the mixture of the following composition: xanthene dyes of the yellow-orange fluoresceine and red-dark blue rhodamine of 3-6 %, the surfactant of 10-40 %, the rest - the dissolvent. The ratio of the mixture of the yellow-orange and the dark blue - red dyes compounds 1:2, as the surfactant use neonol or syntanol. The technical result of the invention is creation of the color penetrant of the lowered volatility, the reduced flammability, the extra-high sensitivity ensuring detection of the minimal flaw with the opening width of 0.5-1 microns and the improved reliability and stability of the monitoring of the items in conditions of repairs and operation.

EFFECT: the invention ensures detection of the minimal flaw with the opening width of about 1 micron, improved reliability and stability of the monitoring of the items in conditions of repairs and operation.

1 tbl

FIELD: flaw detection technologies, non-destructive control methods.

SUBSTANCE: method for controlling products by means of luminescent magneto-powder or capillary flaw detection includes observing images of defects in products produced during flaw detection and following analysis of these images. In accordance to method, product surface being controlled is irradiated firstly with light, causing luminescence of agent used during magneto-powder or capillary flaw detection, and light, not causing luminescence of aforementioned agent. To detect flaws, comparison of produced images is performed using computing device. Received images are recorded by means of at least one video camera. As computing device, computer connected to video camera is used.

EFFECT: expanded arsenal of technical means, used for flaw detection, creation of method for non-destructive control of products of any configuration, providing for automatic finding and analysis of defects in products.

3 cl

FIELD: analysis of materials.

SUBSTANCE: dependence of weight and diameter of particles is determined on diameter of the particles' prints onto substrate. Fixing indicator substrate is scanned together with particles of applied aerosol to get contrast image and computer system is used to process of video images of fixing indicator substrates with particles of aerosol applied onto it. To register video images, digital cameras are used with variable discrete resolution which allows widening of range of sizes of aerosol particles.

EFFECT: improved precision; improved truth of results.

2 cl, 5 tbl

FIELD: capillary luminescent flaw detection, possible use in aviation, automobile, shipbuilding and other branches of mechanical engineering, and also power engineering, chemical and nuclear industries for detection of surface defects, cracks, pores, foliating, abscesses, inter-crystallite corrosion and other defects of material discontinuity flaw type, primarily with small dimensions, in case of especially precise control of products.

SUBSTANCE: penetration agent includes organic phosphor, non-ionic surfactant and solvent, while as organic phosphor a mixture of phosphors from the class of coumarin colorants is used - mixture of donor-coumarin and acceptor-coumarin, as nonionic surfactant a specially defined substance is used, and as solvent a mixture of dibutyl phthalate and propylene carbonate is used with mass ratio ranging from 1:1,5 to 1:0,8. As donor-coumarin, 4-methyl-7-dethyl amine coumarin (K-47) may be used, and as coumarin-acceptor, at least one coumarin of yellow-green luminescence, with mass ratio ranging from 1,1:1 to 1,8:1.

EFFECT: increased sensitivity and reliability of flaw detection, while simultaneously reducing fire hazard and toxicity of used composition.

1 ex, 1 tbl

FIELD: the invention refers to the field of an indestructible control.

SUBSTANCE: the magneto-luminescent method is in that the controlled article is magnetized, suspension with magneto-luminescent powder or dried powder is put on its surface. The controlled surface is irradiated with ultra-violet light and on points of luminescence of the powder availability of defects in the article is defined. An optical spectrometer whose entrance slit receives light information about its condition with the aid of light pipe is used in quality of automatic arrangement for registration of the indicative image of defects on the controlled surface. Scanning the area of the controlled surface is executed by displacement of an entrance face of the light pipe or by displacement of the object itself relatively to the light pipe.

EFFECT: increases reliability of the results of control.

FIELD: printing industry; other industries; method and the device used for marking and control of the technological parameter of the paper sheet strip of the output paper roll.

SUBSTANCE: the invention is pertaining to the field of printing industry and may be used for control over the length of the paper sheet strip of the output paper roll. The special feature of the method of the marking and control over the technological parameter of the paper sheet strip of the output paper roll is that in the capacity of the controlled parameter select the length of the paper sheet strip(1) of the output paper roll (2). In the capacity of the control marks (3) use the digital code with the element indicating the direction of reading-out. The spacing (4) between the control marks (3) take of the preset value. The received data are stored in the memory unit of the computer (8). The special feature of the system used for marking and control over the technological parameter of the paper sheet strip of the output roll is that it additionally contains in series located between the marking tool (10) and the unit of the optical-electronic devices of the control and registration(5) there is the speed sensor (11) and the cutting apparatus (13). The speed sensor (11) and the marking tools are switch-connected with the computer (8). The software the computer (8) is formed with the capability of application by tools of marking (10) of the control marks (3) by the method of printing on the field of the paper sheet strip (1) along the whole length of the roll (2) with the spacing (4) of the preset value, registration of the spacing value (4) between the control marks (3), memorizing of the observed and transformed readings in the memory unit of the computer (8) with provision of saving of the information and the capability of its delivery to the appropriate information carriers. The invention ensures the increased accuracy of the control over the paper sheet strip length.

EFFECT: the invention ensures the increased accuracy of the control over the paper sheet strip length.

7 cl, 5 dwg

Up!