CN112697811A - Surface inspection method for low-magnetic anchor chain - Google Patents
Surface inspection method for low-magnetic anchor chain Download PDFInfo
- Publication number
- CN112697811A CN112697811A CN202011220831.1A CN202011220831A CN112697811A CN 112697811 A CN112697811 A CN 112697811A CN 202011220831 A CN202011220831 A CN 202011220831A CN 112697811 A CN112697811 A CN 112697811A
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- China
- Prior art keywords
- penetrant
- low
- anchor chain
- detection surface
- magnetic anchor
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000007689 inspection Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 238000004140 cleaning Methods 0.000 claims abstract description 18
- 230000007547 defect Effects 0.000 claims abstract description 16
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 238000005498 polishing Methods 0.000 claims abstract description 10
- 230000035945 sensitivity Effects 0.000 claims abstract description 7
- 230000035515 penetration Effects 0.000 claims abstract description 5
- 239000012459 cleaning agent Substances 0.000 claims abstract description 4
- 238000004381 surface treatment Methods 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 239000012466 permeate Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract 1
- 230000005389 magnetism Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a low-magnetic anchor chain surface inspection method, which comprises the following steps: (1) performing surface treatment on the low-magnetic anchor chain; (2) cleaning the detection surface of the low-magnetic anchor chain by using a cleaning agent; (3) carrying out sensitivity test on the penetrant by using a penetration contrast block, and enabling the penetrant to meet the requirement; (4) spraying a penetrant on the cleaned low-magnetic anchor chain detection surface; (5) cleaning redundant penetrant on the detection surface; (6) spraying a developer on the detection surface for cleaning the penetrant; (7) observing the detection surface within 2-5 minutes after the developer is sprayed, wherein if micro cracks or cracks exist on the detection surface, the size and length of the cracks can show stripes; if no stripe appears, the detection surface has no microcrack or crack; (8) and (5) polishing, marking cracks on the detection surface of the low-magnetic anchor chain, and polishing. The invention has convenient operation, is convenient for finding the defects of the surface of the low-magnetic-flux chain ring and the opening of the welding line, ensures the quality of products and improves the safety performance.
Description
Technical Field
The invention relates to the field of ship and ocean engineering, in particular to a surface inspection method for a low-magnetic anchor chain.
Background
The traditional anchor chain material is carbon steel or low alloy steel, has the characteristics of high strength and good toughness, but is often seriously corroded in seawater to influence the service life, so that the anchor chain made of other materials is needed under specific conditions. The austenitic steel has low magnetism or no magnetism, good corrosion resistance and low temperature toughness, and good application value. However, austenitic steel has no magnetism, and the surface quality of a low-magnetic anchor chain cannot be checked by using a traditional magnetic powder inspection method.
Disclosure of Invention
The present invention is to solve the above-described problems, and an object of the present invention is to provide a surface inspection method for a low-magnetic anchor chain.
In order to achieve the technical purpose and achieve the technical requirements, the invention adopts the technical scheme that: a low-magnetic anchor chain surface inspection method is characterized by comprising the following steps: the method comprises the following steps:
(1) performing surface treatment on the low-magnetic anchor chain, and polishing away surface scale of the low-magnetic anchor chain to form a detection surface so as to meet the detection requirement of a detected area;
(2) cleaning, namely flattening the low-magnetic anchor chain on the ground, loosening the contact part between the rings, and cleaning the detection surface of the low-magnetic anchor chain by using a cleaning agent;
(3) sensitivity test, namely using a penetration contrast block to carry out sensitivity test on the penetrating agent and enabling the penetrating agent to meet the requirement;
(4) spraying a penetrant; spraying a penetrant on the cleaned low-magnetic anchor chain detection surface, waiting for the penetrant to permeate for 15-30 min, and if the detection surface has micro cracks or cracks, permeating the penetrant into the depth of the micro cracks or cracks by using a capillary phenomenon principle;
(5) cleaning the penetrant, cleaning the detection surface sprayed with the penetrant, and removing the redundant penetrant on the surface;
(6) spraying a developer, namely spraying the developer on the detection surface for cleaning the penetrant;
(7) identifying defects, observing the detected surface within 2-5 minutes after the developer is sprayed, and if micro cracks or cracks exist on the detected surface, the size and length of the cracks can show stripes; if no stripe appears, the detection surface has no microcrack or crack;
(8) and (5) polishing, marking cracks on the detection surface of the low-magnetic anchor chain, and polishing.
Preferably: the penetrant is red, and the developer is white to generate obvious color difference.
The invention has the beneficial effects that:
1. by using dye penetrant inspection, the problem that the low-magnetic anchor chain has no magnetism and can not detect surface defects by using magnetic powder detection is solved, the product quality is ensured, and the safety performance is improved
2. In addition, the scheme is also suitable for detecting fatigue cracks generated by long-term use of the in-service chain ring under the condition that the in-service chain ring has no power supply.
Detailed Description
The present invention is further described below.
A low-magnetic anchor chain surface inspection method is characterized by comprising the following steps: the method comprises the following steps:
(1) performing surface treatment on the low-magnetic anchor chain, and polishing away surface scale of the low-magnetic anchor chain to form a detection surface so as to meet the detection requirement of a detected area;
(2) cleaning, namely flattening the low-magnetic anchor chain on the ground, loosening the contact part between the rings, and cleaning the detection surface of the low-magnetic anchor chain by using a cleaning agent;
(3) sensitivity test, namely using a penetration contrast block to carry out sensitivity test on the penetrating agent and enabling the penetrating agent to meet the requirement;
(4) spraying a penetrant; spraying a penetrant on the cleaned low-magnetic anchor chain detection surface, waiting for the penetrant to permeate for 15-30 min, and if the detection surface has micro cracks or cracks, permeating the penetrant into the depth of the micro cracks or cracks by using a capillary phenomenon principle;
(5) cleaning the penetrant, cleaning the detection surface sprayed with the penetrant, and removing the redundant penetrant on the surface;
(6) spraying a developer, namely spraying the developer on the detection surface for cleaning the penetrant;
(7) identifying defects, observing the detected surface within 2-5 minutes after the developer is sprayed, and if micro cracks or cracks exist on the detected surface, the size and length of the cracks can show stripes; if no stripe appears, the detection surface has no microcrack or crack;
(8) and (5) polishing, marking cracks on the detection surface of the low-magnetic anchor chain, and polishing.
In the preferred embodiment, the penetrant is red, and the developer is white to produce a significant color difference.
The permeation principle of the invention is as follows: the penetrating agent permeates into the surface opening defect under the capillary action, and after the redundant penetrating agent on the surface of the workpiece is removed, the penetrating agent in the defect is adsorbed to the surface of the workpiece through the capillary action of the developer to form a developing image so as to display the existence of the defect. The defect depth is related to the penetration development width, the larger the width displayed during development is, the larger the cross section area of the defect is, the more penetrant is penetrated into the defect, and the liquid can fill the inside of the defect, so the liquid is penetrated into the surface opening defect such as a crack and the like without being limited by the narrow size of the defect and the multiple bending, and the width of the defect is increased along with the increase of the defect depth.
The above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, but not intended to limit the scope of the present invention, and all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (2)
1. A low-magnetic anchor chain surface inspection method is characterized by comprising the following steps: the method comprises the following steps:
(1) performing surface treatment on the low-magnetic anchor chain to meet the detection requirement of a detected area;
(2) cleaning, namely flattening the low-magnetic anchor chain on the ground, loosening the contact part between the rings, and cleaning the detection surface of the low-magnetic anchor chain by using a cleaning agent;
(3) sensitivity test, namely using a penetration contrast block to carry out sensitivity test on the penetrating agent and enabling the penetrating agent to meet the requirement;
(4) spraying a penetrant; spraying a penetrant on the cleaned low-magnetic anchor chain detection surface, waiting for the penetrant to permeate for 15-30 min, and if the detection surface has micro cracks or cracks, permeating the penetrant into the depth of the micro cracks or cracks by using a capillary phenomenon principle;
(5) cleaning the penetrant, cleaning the detection surface sprayed with the penetrant, and removing the redundant penetrant on the surface;
(6) spraying a developer, namely spraying the developer on the detection surface for cleaning the penetrant;
(7) identifying defects, observing the detected surface within 2-5 minutes after the developer is sprayed, and if micro cracks or cracks exist on the detected surface, the size and length of the cracks can show stripes; if no stripe appears, the detection surface has no microcrack or crack;
(8) and (5) polishing, marking cracks on the detection surface of the low-magnetic anchor chain, and polishing.
2. The method for inspecting the surface of a low-magnetic anchor chain according to the claim, characterized in that: the penetrant is red, and the developer is white to generate obvious color difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011220831.1A CN112697811A (en) | 2020-11-05 | 2020-11-05 | Surface inspection method for low-magnetic anchor chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011220831.1A CN112697811A (en) | 2020-11-05 | 2020-11-05 | Surface inspection method for low-magnetic anchor chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112697811A true CN112697811A (en) | 2021-04-23 |
Family
ID=75505895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011220831.1A Pending CN112697811A (en) | 2020-11-05 | 2020-11-05 | Surface inspection method for low-magnetic anchor chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112697811A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447354A (en) * | 2021-06-30 | 2021-09-28 | 张家港宏昌钢板有限公司 | Inspection method for surface cracks of hot-rolled strip steel |
| CN113664166A (en) * | 2021-06-30 | 2021-11-19 | 武汉钢铁有限公司 | Method for measuring depth of vibration mark |
| CN114324381A (en) * | 2021-12-26 | 2022-04-12 | 宝鼎重工有限公司 | Method for detecting surface quality of long-shaft deep hole by utilizing capillary action principle |
| CN115950892A (en) * | 2023-03-14 | 2023-04-11 | 江阴市华昌不锈钢管有限公司 | Automatic spray detection device for micro cracks on outer surface of stainless steel pipe based on image recognition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103604753A (en) * | 2013-10-22 | 2014-02-26 | 内蒙古包钢钢联股份有限公司 | Method for detecting subsurface crack of casting blank |
| CN104677917A (en) * | 2015-01-23 | 2015-06-03 | 苏州新美达探伤器材有限公司 | Environment-friendly solvent type coloring and flaw-detecting penetrant and preparation method thereof |
| CN105758866A (en) * | 2014-12-15 | 2016-07-13 | 重庆迅升机车配件有限公司 | Penetration flaw detection process |
-
2020
- 2020-11-05 CN CN202011220831.1A patent/CN112697811A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103604753A (en) * | 2013-10-22 | 2014-02-26 | 内蒙古包钢钢联股份有限公司 | Method for detecting subsurface crack of casting blank |
| CN105758866A (en) * | 2014-12-15 | 2016-07-13 | 重庆迅升机车配件有限公司 | Penetration flaw detection process |
| CN104677917A (en) * | 2015-01-23 | 2015-06-03 | 苏州新美达探伤器材有限公司 | Environment-friendly solvent type coloring and flaw-detecting penetrant and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447354A (en) * | 2021-06-30 | 2021-09-28 | 张家港宏昌钢板有限公司 | Inspection method for surface cracks of hot-rolled strip steel |
| CN113664166A (en) * | 2021-06-30 | 2021-11-19 | 武汉钢铁有限公司 | Method for measuring depth of vibration mark |
| CN114324381A (en) * | 2021-12-26 | 2022-04-12 | 宝鼎重工有限公司 | Method for detecting surface quality of long-shaft deep hole by utilizing capillary action principle |
| CN114324381B (en) * | 2021-12-26 | 2024-02-06 | 宝鼎重工有限公司 | Method for detecting surface quality of long-axis deep hole by utilizing capillary action principle |
| CN115950892A (en) * | 2023-03-14 | 2023-04-11 | 江阴市华昌不锈钢管有限公司 | Automatic spray detection device for micro cracks on outer surface of stainless steel pipe based on image recognition |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210423 |
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| RJ01 | Rejection of invention patent application after publication |