CN1296268A - Fluorescent magnetic powder making technology for fault detection - Google Patents
Fluorescent magnetic powder making technology for fault detection Download PDFInfo
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- CN1296268A CN1296268A CN 00127592 CN00127592A CN1296268A CN 1296268 A CN1296268 A CN 1296268A CN 00127592 CN00127592 CN 00127592 CN 00127592 A CN00127592 A CN 00127592A CN 1296268 A CN1296268 A CN 1296268A
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- gelatin
- magnetic powder
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- fluorescent material
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- Manufacturing Of Micro-Capsules (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The production process of fluorescent magnetic powder for detection of defects includes the following steps: mixing black magnetic powder and fluorescent powder and stirring them, adding them into the solution composed of dichloromethane solution containing polystyrene and aqueous solution containing gelatin, high-speed stirring to implement coating process, then continuously stirring in gelatin-containing water at 37 deg.C, filtering, cleaning and drying so as to obtain the invented product. Said invention adopts microcapsule technology and utilizes the control of stirring speed, time and dose of gelatin and solvent dichloromethane to implement the control of product grain size and reduce the requirements for fluorescent material. It features easily available raw material, simple process and less pollution to environment.
Description
The present invention relates to a kind of fluorescent magnetic powder making technology, relate in particular to a kind of fluorescent magnetic powder making technology that is used for the steel and iron parts flaw detection, belong to technical field of function materials.
Flaw detection is meant in common flaw detection with fluorescentmagnetic particle(powder) uses the black particle surface, by resin fluorescent material is coated on its surface, observes steel and iron parts surface and inner when damaged under black light lamp, can improve the sensitivity of its detection.In the prior art, United States Patent (USP) and Japan Patent all are described the preparation of fluorescent material, wherein produce the product that obtains and all have the fluorescent material peeling phenomenon, after the fluorescent material after peeling off is adsorbed on the surface of measured piece, easily cause flase drop and omission according to the patent before the U.S..Introduce as United States Patent (USP) 4724094, the pre-mixed magnetic and the mixture of fluorescent material are joined in the solution of being made up of the resin of volatile water-soluble solvent, plasticizer, water sedimentation film forming, at last water or water sedimentation resin are joined in the above-mentioned solution, this resin as binding agent with magnetic and fluorescent material bonding and coat them.Obtained good covered effect by this technology, but introduced the nitrite anticorrisive agent in this technology, environment is had certain influence, the fluorescentmagnetic particle(powder) particle diameter of this prepared is bigger in addition, in use for trickle damaged, the sensitivity of its detection does not reach requirement.The clear 63-304153 of Japan Patent has adopted Mechanico-chemical reactor to realize preparation process, magnetic is mixed in certain proportion with resin, by a Mechanico-chemical reactor with the surface of resin-coating at magnetic, and then above-mentioned powder mixed with fluorescent material, by Mechanico-chemical reactor fluorescent material is embedded in above-mentioned powder, thereby finishes the preparation of fluorescentmagnetic particle(powder).Its shortcoming is that selected nanometer and sub-micron resin is difficult to obtain and cost an arm and a leg, and meanwhile the input of equipment is bigger, produces to be difficult to popularize.
The objective of the invention is to above-mentioned deficiency, a kind of new fluorescent magnetic powder making technology for fault detection is provided, make it need not spend too big cost at prior art, and the fluorescentmagnetic particle(powder) particle diameter of gained is less, good fluorescence intensity is arranged, can improve detection sensitivity, effect is better.
For realizing such purpose, the present invention has adopted the process thought of microcapsules technology in technical scheme, mixing speed, mixing time, the consumption of emulsifying agent gelatin and the amount of methylene chloride during by the control microencapsulation realize the control to product cut size.As long as select suitable raw material particle size, just can realize that difference requires the preparation of fluorescentmagnetic particle(powder) under the particle diameter.
Concrete scheme of the present invention is as follows:
1, gets flaw detection with 300 orders～5～50 parts of 500 purpose black particles (weight wt), add the fluorescent material of 2～40 parts of particle diameters, both are fully mixed through stirring at 0.2～0.5 μ m.
2, get 1～10 part of the dichloromethane solution (wt) of 10% (wt) polystyrene, join 1～12 part (wt) and contain in the aqueous solution of 8% (wt) gelatin.
3, in the solution of pouring pre-mixed magnetic in the step 1 and fluorescent material into step 2, stirring under the rotating speed more than the 4500rpm about 5 minutes, make it to finish coating with homogenizer.
4, above-mentioned covering liquid is slowly poured in the big water gaging that contains 1% (wt) gelatin, kept water temperature, continue stirring about 5 hours near 37 ℃ (can not above 37 ℃).
5, with above-mentioned solution suction filtration, clean, put into baking oven taking-up after under 80 ℃ dry 10～14 hours and be product.
Product can be observed its fluorescence intensity with the black light lamp of 3650 wavelength, and surveys its particle size distribution with particle size analyzer.It is little to find that product has a particle diameter, the advantage that fluorescence intensity is good.
The microcapsules that the present invention adopts prepare the technology of fluorescentmagnetic particle(powder), can be according to the surface characteristic of fluorescent material, the design microcapsules possess water-wet behavior or oil-wet behavior, thereby reduced requirement to fluorescent material, only contain the gelatin composition in the last waste water, environment can not damaged and influence.Characteristics such as the present invention has overcome the big problem of the input in the Japan Patent, has raw material and is easy to get, and technology is simple, and environmental pollution is little have broad application prospects.
Below by specific embodiment technical scheme of the present invention is described in further detail.
Embodiment 1
1, the fluorescent material of getting 10 parts (wt) 300 purpose black particles and 4 parts of (wt) 0.2 μ m mixes.
2, get 2 parts of the dichloromethane solutions (wt) that contain 10% (wt) polystyrene, join 1 part (wt) and contain in the aqueous solution of 8% (wt) gelatin.
3, pre-mixed magnetic and fluorescent material is poured in the above-mentioned solution, under 5000rpm, stirred 5 minutes with mixer.
4, above-mentioned solution is slowly poured in the big water gaging that contains 1% (wt) gelatin, kept water temperature, continue to stir 5 hours near 37 ℃.
5, with above-mentioned solution suction filtration, put into after the washing for several times baking oven 80 ℃ dry 12 hours down, take out the back and observe its fluorescence intensity with the black light lamp of 3650 wavelength, survey its particle size distribution simultaneously.
The fluorescent material that obtains from above-mentioned technology has good fluorescence intensity, and the particle diameter of particle is between 5～60 μ m.
Embodiment 2
1, the fluorescent material 6.5 parts (wt) of getting 10 parts (wt) 500 purpose black particles and 0.2 μ m mixes.
4 parts of the dichloromethane solutions (wt) that 2, will contain 10% (wt) polystyrene join 1.5 parts (wt) and contain in the aqueous solution of 8% (wt) gelatin.
3, pre-mixed magnetic and fluorescent material is poured in the above-mentioned solution, under the rotating speed of 6000rpm, stirred 6 minutes with mixer.
4, all the other steps are with embodiment 1.
The fluorescent material that obtains has good fluorescence intensity, and the particle diameter of particle is between 1～55 μ m.
Embodiment 3
1, the fluorescent material 30 parts (wt) of getting 40 parts (wt) 300 purpose black particles and 0.5 μ m mixes.
8 parts of the dichloromethane solutions (wt) that 2, will contain 10% (wt) polystyrene join 1.8 parts (wt) and contain in the aqueous solution of 8% (wt) gelatin.
3, pre-mixed magnetic and fluorescent material is poured in the above-mentioned solution, under the rotating speed of 4500rpm, stirred 5 minutes with mixer.
4, all the other steps are with embodiment 1.
The fluorescent material that obtains has good fluorescence intensity, and the particle diameter of particle is between 10～70 μ m.
Claims (1)
1, a kind of fluorescent magnetic powder making technology for fault detection, it is characterized in that getting and detect a flaw with 300 orders～5～50 parts of 500 purpose black particles (wt), add the fluorescent material of 2～40 parts of particle diameters at 0.2～0.5 μ m, joining 1～10 part (wt) after mixing contains in the solution of dichloromethane solution of 10% (wt) polystyrene and the aqueous solution composition that 1～12 part (wt) contains 8% (wt) gelatin, finished coating in about 5 minutes with mixer in stirring under the rotating speed more than the 4500rpm, covering liquid is slowly poured in the big water gaging that contains 1% (wt) gelatin, keep water temperature near 37 ℃, continue to stir after 5 hours, with the solution suction filtration, clean, 80 ℃ of drying taking-ups after 10～14 hours down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00127592 CN1128357C (en) | 2000-11-28 | 2000-11-28 | Fluorescent magnetic powder making technology for fault detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00127592 CN1128357C (en) | 2000-11-28 | 2000-11-28 | Fluorescent magnetic powder making technology for fault detection |
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| Publication Number | Publication Date |
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| CN1296268A true CN1296268A (en) | 2001-05-23 |
| CN1128357C CN1128357C (en) | 2003-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00127592 Expired - Fee Related CN1128357C (en) | 2000-11-28 | 2000-11-28 | Fluorescent magnetic powder making technology for fault detection |
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| CN (1) | CN1128357C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374856C (en) * | 2004-12-02 | 2008-03-12 | 内蒙古第一机械制造（集团）有限公司 | Water-based magnetic suspending liquid adjusting agent for wet magnetic powder defect detection |
| CN102925140A (en) * | 2012-11-23 | 2013-02-13 | 兰州大学 | Visible light excited fluorescent magnetic powder and preparation method thereof |
| CN106226386A (en) * | 2016-07-04 | 2016-12-14 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of processing method of performance test composite fluorescence magnetic powder |
| CN106867538A (en) * | 2017-01-19 | 2017-06-20 | 安徽铖友汽车零部件制造有限公司 | A kind of magnetic powder inspection antirust fluorescer |
| CN107844064A (en) * | 2017-10-26 | 2018-03-27 | 宁夏共享集团股份有限公司 | Magnetic flaw detection ink automatically configures equipment |
| CN109777396A (en) * | 2019-03-06 | 2019-05-21 | 安徽省特种设备检测院 | A kind of phosphorescence magnetic powder and preparation method thereof and a kind of phosphorescence Magnetic testing liquid |
| US10800638B2 (en) | 2014-12-23 | 2020-10-13 | Otis Elevator Company | Elevator system with ventilation system |
| CN112300780A (en) * | 2019-08-02 | 2021-02-02 | 上海全凯新材料科技有限公司 | Anti-stripping fluorescent magnetic powder, preparation method thereof and composite fluorescent magnetic powder |
-
2000
- 2000-11-28 CN CN 00127592 patent/CN1128357C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374856C (en) * | 2004-12-02 | 2008-03-12 | 内蒙古第一机械制造（集团）有限公司 | Water-based magnetic suspending liquid adjusting agent for wet magnetic powder defect detection |
| CN102925140A (en) * | 2012-11-23 | 2013-02-13 | 兰州大学 | Visible light excited fluorescent magnetic powder and preparation method thereof |
| CN102925140B (en) * | 2012-11-23 | 2014-06-25 | 兰州大学 | Visible light excited fluorescent magnetic powder and preparation method thereof |
| US10800638B2 (en) | 2014-12-23 | 2020-10-13 | Otis Elevator Company | Elevator system with ventilation system |
| CN106226386A (en) * | 2016-07-04 | 2016-12-14 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of processing method of performance test composite fluorescence magnetic powder |
| CN106226386B (en) * | 2016-07-04 | 2019-05-10 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of processing method of performance test composite fluorescence magnetic powder |
| CN106867538A (en) * | 2017-01-19 | 2017-06-20 | 安徽铖友汽车零部件制造有限公司 | A kind of magnetic powder inspection antirust fluorescer |
| CN107844064A (en) * | 2017-10-26 | 2018-03-27 | 宁夏共享集团股份有限公司 | Magnetic flaw detection ink automatically configures equipment |
| CN109777396A (en) * | 2019-03-06 | 2019-05-21 | 安徽省特种设备检测院 | A kind of phosphorescence magnetic powder and preparation method thereof and a kind of phosphorescence Magnetic testing liquid |
| CN109777396B (en) * | 2019-03-06 | 2022-05-31 | 安徽省特种设备检测院 | Phosphorescent magnetic powder, preparation method thereof and phosphorescent magnetic powder detection liquid |
| CN112300780A (en) * | 2019-08-02 | 2021-02-02 | 上海全凯新材料科技有限公司 | Anti-stripping fluorescent magnetic powder, preparation method thereof and composite fluorescent magnetic powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1128357C (en) | 2003-11-19 |
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