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Preparation method of special coupling agent for ultrasonic flaw detection on rough surface

An ultrasonic flaw detection and rough surface technology, which is applied in the direction of material analysis, measuring device and instrument using sonic/ultrasonic/infrasonic waves, can solve the problems of easily polluted workpiece surface, difficulty in cleaning and recycling, etc., to improve construction conditions and simplify construction Process, easy-to-use effects

Active Publication Date: 2017-05-31
JIANGSU SANHE SOUND SOURCE ULTRASONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the invention is: aiming at the problem that the coupling agent used in traditional rough surface ultrasonic flaw detection is easy to pollute the surface of the workpiece after use, and it is difficult to clean and recycle. Method of dry powder special couplant for ultrasonic flaw detection on rough surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Weigh 800g of wheat straw, soak it in 3L biogas liquid for 20min, spread it evenly in a light-proof and ventilated place, and store it for 5 days, spray 80mL of water on the surface of wheat straw every 4h, then transfer the wheat straw into an oven , and dried at 80°C for 2 hours to obtain activated wheat straw; weigh 400g of quicklime, pour it into a beaker filled with 2L of clear water, stir and mix with a glass rod for 10min, then weigh 600g of the above-mentioned activated wheat straw, and pass through a guillotine Cut into short stalks with a length of 10 cm, rinse the short stalks with water three times, pour the washed short stalks into the above-mentioned beaker, stir and mix with a glass rod for 20 minutes, and then let stand and soak for 45 minutes; after soaking, put the short stalks Take out the stalks, wrap them with gauze, put them in a steamer, and cook them at 90°C for 6 hours. After cooling down to room temperature naturally, take out the short stalks w...

example 2

[0021] Weigh 900g of wheat straw, soak it in 4L biogas liquid for 25 minutes, spread it evenly in a dark and ventilated place, and store it for 6 days, spray 100mL of water on the surface of the wheat straw every 5 hours, and then transfer the wheat straw to the oven , and dried at 85°C for 3 hours to obtain activated wheat straw; weigh 450g of quicklime, pour it into a beaker filled with 2L of water, stir and mix it with a glass rod for 12min, then weigh 700g of the above-mentioned activated wheat straw, and pass through a guillotine Cut into short stalks with a length of 12 cm, rinse the short stalks with water for 4 times, pour the washed short stalks into the above beaker, stir and mix with a glass rod for 25 minutes, then let stand and soak for 55 minutes; after soaking, put the short stalks Take out the stalks, wrap them with gauze, put them in a steamer, and cook them at 92°C for 7 hours. After cooling down to room temperature naturally, take out the short stalks wrapped...

example 3

[0024] Weigh 1000g of wheat straw, soak it in 5L biogas liquid for 30min, spread it evenly in a light-proof and ventilated place, store it for 7 days, spray 120mL of water on the surface of the wheat straw every 6h, and then transfer the wheat straw into the oven , dried for 4 hours at a temperature of 90°C to obtain activated wheat straw; weigh 500g of quicklime, pour it into a beaker filled with 3L of water, stir and mix it with a glass rod for 15min, then weigh 800g of the above-mentioned activated wheat straw, and pass through a guillotine Cut into short stalks with a length of 15 cm, rinse the short stalks with water for 5 times, pour the washed short stalks into the above-mentioned beaker, stir and mix with a glass rod for 30 minutes, and then let stand and soak for 60 minutes; after soaking, put the short stalks Take out the stalks, wrap them with gauze, put them in a steamer, cook them at 95°C for 8 hours, wait for them to cool down to room temperature naturally, take o...

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Abstract

The invention discloses a preparation method of a special coupling agent for ultrasonic flaw detection on a rough surface, belonging to the technical field of preparation of coupling agents. The preparation method comprises the following steps: firstly, soaking wheat straws in biogas broth to initially degrade and activate wheat straw fibers; secondly, cutting the straws, soaking the straws in lime water, digesting the straws, then putting the straws in a stone mortar, beating the straws, then putting short straws in a sodium hydroxide solution, and dissolving lignin in the straw fibers by using microwave heating combined with high-pressure heating treatment; and finally, mixing filter cakes with chloroacetic acid, performing centrifugal separation after heating reaction, and drying a precipitate into powder, thereby obtaining the special coupling agent for ultrasonic flaw detection on the rough surface. According to the preparation method provided by the invention, the wheat straws, which are low in price and easy to obtain, are used as a raw material, the obtained product only needs to be confected to be with different viscosities for direct use, the product is green and nontoxic, the surface of a workpiece can be washed directly with water after completion of flaw detection, and soil and water are not polluted. By use of the coupling agent, the problems that a conventional coupling agent for ultrasonic flaw detection on the rough surface pollutes a workpiece after use and is difficult to clean and recover are effectively solved.

Description

technical field [0001] The invention discloses a method for preparing a special coupling agent for ultrasonic flaw detection on rough surfaces, and belongs to the technical field of coupling agent preparation. Background technique [0002] When ultrasonic waves are incident on the interface between two different media, the greater the antagonism between the two, the less sound energy will pass through the interface into another medium. If the ultrasonic probe is in direct contact with the surface of the workpiece, the ultrasonic waves emitted cannot reach and enter the interior of the workpiece because of the presence of air. Therefore, the coupling agent for ultrasonic flaw detection came into being and is applied between the probe and the surface of the workpiece to be tested. , can play the role of isolating the air, so that the ultrasonic wave can spread smoothly. [0003] In conventional ultrasonic testing, a coupling medium must be filled between the probe sound sourc...

Claims

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Application Information

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IPC IPC(8): G01N29/28
CPCG01N29/28
Inventor 张静马俊杰
Owner JIANGSU SANHE SOUND SOURCE ULTRASONIC TECH
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