CN113340912A - Permeation detection method - Google Patents
Permeation detection method Download PDFInfo
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- CN113340912A CN113340912A CN202110598258.6A CN202110598258A CN113340912A CN 113340912 A CN113340912 A CN 113340912A CN 202110598258 A CN202110598258 A CN 202110598258A CN 113340912 A CN113340912 A CN 113340912A
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- piece
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- penetrating agent
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a penetration detection method, which comprises the following steps: (1) pretreating the surface of a piece to be detected; (2) applying a penetrating agent on the surface of the piece to be detected; (3) placing the piece to be tested into a vibrating device of a high-pressure chamber, and starting the vibrating device to vibrate the piece to be tested under high pressure; (4) cleaning the surface of the piece to be detected; (5) applying a developer to the surface of the piece to be detected, and placing the piece to be detected at a certain temperature for developing; (6) and observing and judging the detection result. The penetration detection method can finish the flaw detection of the surface of the piece to be detected within 5-10 minutes, can effectively shorten the detection time and quickly display the detection result.
Description
Technical Field
The invention belongs to the technical field of nondestructive testing, and particularly relates to a penetration testing method.
Background
The penetration detection is a nondestructive detection method for detecting the surface opening defect of a piece to be detected based on the capillary action principle. The penetration detection can be used for detecting the surface opening defects of metal and nonmetal workpieces and is not influenced by the structure, chemical components and defect shapes of the workpieces to be detected. The method has the advantage of simple operation, but the detection time is long in practical application, and the detection result cannot be displayed quickly.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a penetration detection method which can effectively shorten the detection time and quickly display the detection result.
The technical purpose of the invention is realized by the following technical scheme:
a method of permeation detection comprising the steps of: (1) pretreating the surface of a piece to be detected; (2) applying a penetrating agent on the surface of the piece to be detected; (3) placing the piece to be tested into a vibrating device of a high-pressure chamber, and starting the vibrating device to vibrate the piece to be tested under high pressure; (4) cleaning the surface of the piece to be detected; (5) applying a developer to the surface of the piece to be detected, and placing the piece to be detected at a certain temperature for developing; (6) and observing and judging the detection result.
Preferably, the high pressure in step (3) is 200kPa to 500 kPa.
It is further preferred that the elevated pressure in step (3) is 300 kPa.
Preferably, the vibration frequency of the vibration device in the step (3) is 30-50 Hz.
Further preferably, the vibration frequency of the vibration device in the step (3) is 40 Hz.
Preferably, the vibration mode in step (3) is periodic vibration, wherein each vibration period is 2-5 seconds of vibration and 10-20 seconds of rest, and the steps are repeated.
Further preferably, the vibration mode in step (3) is periodic vibration, wherein each vibration period is 3 seconds of vibration and 15 seconds of rest, and the steps are repeated.
Preferably, the temperature in step (5) is 30-50 ℃.
Further preferably, the temperature in step (5) is 40 ℃.
Preferably, the penetrant is applied in step (2) by one of spraying, brushing, pouring and dipping.
Preferably, the penetrant in step (2) is one of a coloring penetrant, a fluorescent penetrant and a fluorescent coloring penetrant.
The invention has the beneficial effects that: the penetration detection method of the invention can effectively accelerate the penetration of the penetrant into the gaps on the surface of the piece to be detected by applying the penetrant on the surface of the piece to be detected and then placing the piece to be detected in a high-pressure environment for periodic vibration under a specific vibration frequency, after penetration, cleaning the surface of the piece to be detected, then applying the developer and placing the piece to be detected at a specific temperature for development, and at the temperature, the penetrant in the gaps can be rapidly diffused to the developer layer, thereby realizing rapid color development, completing the flaw detection on the surface of the piece to be detected within 5-10 minutes, effectively shortening the detection time and rapidly displaying the detection result.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1:
a method of permeation detection comprising the steps of:
(1) cleaning the surface of the piece to be detected, removing stains on the surface of the piece to be detected, and drying;
(2) spraying a penetrating agent on the surface of the piece to be detected, wherein the penetrating agent is one of a coloring penetrating agent, a fluorescent penetrating agent and a fluorescent coloring penetrating agent, the spraying range of the penetrating agent is 25mm of the detection area and two sides of the piece to be detected respectively, the distance between a nozzle and the detected surface is preferably 20-30mm, the spraying direction and the detection part form an included angle of 30-40 degrees, and the detection part is completely covered by the penetrating agent;
(3) placing a to-be-tested piece into a vibrating device of a high-pressure chamber, starting the vibrating device to vibrate the to-be-tested piece under the high pressure of 200kPa, wherein the vibration frequency of the vibrating device is 30Hz, the vibration mode is periodic vibration, each vibration period is 2 seconds of vibration, the vibrating device is static for 10 seconds, and the steps are repeated and are vibrated for 10 periods;
(4) cleaning the surface of the piece to be detected;
(5) applying a developer to the surface of the piece to be detected, and placing the piece to be detected at 30 ℃ for development;
(6) after 3 minutes, the test results were observed and judged.
Example 2:
a method of permeation detection comprising the steps of:
(1) cleaning the surface of the piece to be detected, removing stains on the surface of the piece to be detected, and drying;
(2) spraying a penetrating agent on the surface of the piece to be detected, wherein the penetrating agent is one of a coloring penetrating agent, a fluorescent penetrating agent and a fluorescent coloring penetrating agent, the spraying range of the penetrating agent is 25mm of the detection area and two sides of the piece to be detected respectively, the distance between a nozzle and the detected surface is preferably 20-30mm, the spraying direction and the detection part form an included angle of 30-40 degrees, and the detection part is completely covered by the penetrating agent;
(3) placing a to-be-tested piece into a vibrating device of a high-pressure chamber, starting the vibrating device to vibrate the to-be-tested piece at a high pressure of 300kPa, wherein the vibration frequency of the vibrating device is 40Hz, the vibration mode is periodic vibration, each vibration period is 3 seconds of vibration, the vibrating device is static for 15 seconds, and the steps are repeated and are vibrated for 5 periods;
(4) cleaning the surface of the piece to be detected;
(5) applying a developer to the surface of the piece to be detected, and placing the piece to be detected at 40 ℃ for development;
(6) after 3 minutes, the test results were observed and judged.
Example 3:
a method of permeation detection comprising the steps of:
(1) cleaning the surface of the piece to be detected, removing stains on the surface of the piece to be detected, and drying;
(2) spraying a penetrating agent on the surface of the piece to be detected, wherein the penetrating agent is one of a coloring penetrating agent, a fluorescent penetrating agent and a fluorescent coloring penetrating agent, the spraying range of the penetrating agent is 25mm of the detection area and two sides of the piece to be detected respectively, the distance between a nozzle and the detected surface is preferably 20-30mm, the spraying direction and the detection part form an included angle of 30-40 degrees, and the detection part is completely covered by the penetrating agent;
(3) placing a to-be-tested piece into a vibrating device of a high-pressure chamber, starting the vibrating device to vibrate the to-be-tested piece under the high pressure of 500kPa, wherein the vibration frequency of the vibrating device is 50Hz, the vibration mode is periodic vibration, each vibration period is 5 seconds of vibration, the vibrating device is static for 20 seconds, and the vibration is repeated for 5 periods;
(4) cleaning the surface of the piece to be detected;
(5) applying a developer to the surface of the piece to be detected, and placing the piece to be detected at 50 ℃ for development;
(6) after 3 minutes, the test results were observed and judged.
Example 4:
a method of permeation detection comprising the steps of:
(1) cleaning the surface of the piece to be detected, removing stains on the surface of the piece to be detected, and drying;
(2) coating a penetrating agent on the surface of the to-be-detected piece, wherein the penetrating agent is one of a coloring penetrating agent, a fluorescent penetrating agent and a fluorescent coloring penetrating agent, the coating range of the penetrating agent is 25mm for the detection area and two sides of the to-be-detected piece respectively, and the detection part is completely covered by the penetrating agent;
(3) placing a to-be-tested piece into a vibrating device of a high-pressure chamber, starting the vibrating device to vibrate the to-be-tested piece at a high pressure of 300kPa, wherein the vibration frequency of the vibrating device is 40Hz, the vibration mode is periodic vibration, each vibration period is 3 seconds of vibration, the vibrating device is static for 15 seconds, and the steps are repeated and are vibrated for 5 periods;
(4) cleaning the surface of the piece to be detected;
(5) applying a developer to the surface of the piece to be detected, and placing the piece to be detected at 40 ℃ for development;
(6) after 3 minutes, the test results were observed and judged.
Test example:
the fractured crankshaft is used as a piece to be detected, the permeation detection method of the embodiment 1-4 is respectively used for performing permeation detection on the fractured surface of the crankshaft, the result can detect microcracks on the fractured surface of the crankshaft, and the development has high definition, so that the permeation detection method can finish flaw detection on the surface of the piece to be detected within 5-10 minutes, effectively shorten the detection time and quickly display the detection result.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (7)
1. A method of permeation detection, comprising the steps of:
(1) pretreating the surface of a piece to be detected;
(2) applying a penetrating agent on the surface of the piece to be detected;
(3) placing the piece to be tested into a vibrating device of a high-pressure chamber, and starting the vibrating device to vibrate the piece to be tested under high pressure;
(4) cleaning the surface of the piece to be detected;
(5) applying a developer to the surface of the piece to be detected, and placing the piece to be detected at a certain temperature for developing;
(6) and observing and judging the detection result.
2. A penetrant testing method according to claim 1, wherein: the high pressure in the step (3) is 200-500 kPa.
3. A penetrant testing method according to claim 1, wherein: and (4) the vibration frequency of the vibration device in the step (3) is 30-50 Hz.
4. A penetration test method according to claim 3, wherein: and (4) the vibration mode in the step (3) is periodic vibration, wherein each vibration period is 2-5 seconds of vibration, the vibration is kept still for 10-20 seconds, and the steps are repeated.
5. A penetrant testing method according to claim 1, wherein: the temperature in the step (5) is 30-50 ℃.
6. A penetrant testing method according to claim 1, wherein: the application mode of the penetrating agent in the step (2) is one of spraying, brushing, pouring and dipping.
7. A penetrant testing method according to claim 1, wherein: the penetrant in the step (2) is one of a coloring penetrant, a fluorescent penetrant and a fluorescent coloring penetrant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110598258.6A CN113340912A (en) | 2021-05-31 | 2021-05-31 | Permeation detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110598258.6A CN113340912A (en) | 2021-05-31 | 2021-05-31 | Permeation detection method |
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| Publication Number | Publication Date |
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| CN113340912A true CN113340912A (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110598258.6A Pending CN113340912A (en) | 2021-05-31 | 2021-05-31 | Permeation detection method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466644A (en) * | 2010-11-19 | 2012-05-23 | 江苏瑞特回转支承有限公司 | Penetrant testing method of opening defect on surface of workpiece |
| CN103424342A (en) * | 2013-08-09 | 2013-12-04 | 国家电网公司 | IIC-d penetration detection method for tower material under low-temperature condition |
| CN105717134A (en) * | 2014-12-04 | 2016-06-29 | 重庆旭新悦数控机械有限公司 | Penetrant testing process |
| CN110261275A (en) * | 2019-06-12 | 2019-09-20 | 北京航灜精诚检测技术有限公司 | Penetrant detecting method and equipment |
-
2021
- 2021-05-31 CN CN202110598258.6A patent/CN113340912A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466644A (en) * | 2010-11-19 | 2012-05-23 | 江苏瑞特回转支承有限公司 | Penetrant testing method of opening defect on surface of workpiece |
| CN103424342A (en) * | 2013-08-09 | 2013-12-04 | 国家电网公司 | IIC-d penetration detection method for tower material under low-temperature condition |
| CN105717134A (en) * | 2014-12-04 | 2016-06-29 | 重庆旭新悦数控机械有限公司 | Penetrant testing process |
| CN110261275A (en) * | 2019-06-12 | 2019-09-20 | 北京航灜精诚检测技术有限公司 | Penetrant detecting method and equipment |
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Application publication date: 20210903 |