Method for measuring effective propagation distance of ultrosonic in metal melt and its special device

A technology of propagation distance and metal melt, which is used in the analysis of solids using sonic/ultrasonic/infrasonic waves, and can solve problems such as the inability to determine the effective propagation distance of ultrasonic waves, corrosion effects, etc.

Inactive Publication Date: 2006-11-29
SHANGHAI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, due to the high temperature of the metal melt, the material composition changes during the cooling process of the melt, and some melts will have a strong corrosion effect on the probe, so the traditional method cannot be used to directly measure the attenuation strength of ultrasonic waves in the metal melt , it is impossible to determine the effective propagation distance of ultrasonic waves in the metal melt

Method used

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  • Method for measuring effective propagation distance of ultrosonic in metal melt and its special device
  • Method for measuring effective propagation distance of ultrosonic in metal melt and its special device
  • Method for measuring effective propagation distance of ultrosonic in metal melt and its special device

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Embodiment 1

[0021] Put an appropriate amount of Sn-10% Sb binary alloy into the crucible 4, the upper bottom surface of the crucible is a corrosion-resistant metal surface with a surface roughness less than 0.8 μm, cover the heat preservation cover 7, and heat the metal until the temperature exceeds the liquid temperature of the alloy. When the phase line is 257°C, stop heating. Adjust the lifting handle 6, slowly move the guide rod 3 into the liquid metal melt, and turn the leveling nut 10 to make the upper bottom surface of the crucible perpendicular to the guide rod. The distance between the bottom end of the guide rod and the upper bottom surface of the crucible is adjusted to 20mm by the lifting handle 6 and the scale 9. The water cooling device 2 is turned on, the ultrasonic transmitting and receiving device 11 is turned on, and the ultrasonic wave is indirectly introduced into the liquid metal through the ultrasonic probe 1 . As the metal melt cools in crucible 4 , the temperature...

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Abstract

The invention relates to a method and special device for measuring effective propagation length of ultrasonic wave in metal melt, and the method uses probe ultrasonic transceiver, indirectly guides ultrasonic wave through guide rod into metal melt, measures attenuation values of ultrasonic wave at different propagation lengths, adopts MATLAB software to make data fitting and calculates the effective propagation length of ultrasonic wave in metal melt. And the method can measure attenuation of ultrasonic wave in low temperature, medium temperature, high temperature and corrosive melt melts, and has low cost and high probe service life. And the device has a main character of comprising ultrasonic wave propagation length regulating system and temperature collecting system.

Description

technical field [0001] The invention relates to a method for measuring the effective propagation distance of ultrasonic waves in molten metal and a special device thereof. The invention belongs to the technical field of metal material processing. Background technique [0002] With the in-depth study of ultrasonic characteristics, its application range is expanding. Especially in recent years, the use of high-power ultrasonic waves to treat the solidification process of metals has achieved remarkable results. However, due to the serious attenuation phenomenon of ultrasonic waves in the metal melt, the treatment effects near the ultrasonic tool head and far away from the tool head are very different (see figure 1 ), which limits the application of this technology to large castings. In order to make the performance of large castings meet the design requirements, it is necessary to quantitatively determine the effective propagation distance of ultrasonic waves in molten metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/11
Inventor 翟启杰刘清梅张勇龚永勇戚飞鹏
Owner SHANGHAI UNIV
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