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JPS5654977

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DESCRIPTION JPS5654977
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a metal plate equipped
ultrasonic transducer according to the present invention, and FIG. 2 is a schematic view of an
ultrasonic water tank experiment using the transducer according to the present invention. In the
figure, 1: oscillator, 2: metal plate, 3: solder material, 4: ultrasonic water tank, 5: water, 6: rubber
packing, 7: high frequency power meter, 8: ultrasonic oscillator.
DETAILED DESCRIPTION OF THE INVENTION In the present invention, a base material
containing a high temperature active metal such as titanium is inserted between a
magnetostrictive vibrator or an electrostrictive vibrator and a metal plate of iron or titanium and
melted in a high temperature electric furnace The present invention relates to a bonded metal
plate-equipped ultrasonic transducer. In an ultrasonic transducer used in an ultrasonic cleaner or
ultrasonic processing machine, energy is transmitted to, for example, an ultrasonic water tank
through attaching a metal plate to the transducer. Wear a metal ultrasonic horn to effectively
transmit the vibration. Conventionally, epoxy-based organic adhesives have been used in ceramic
vibrators such as ferrite vibrators. But is this kind of adhesive made of organic polymers (1)?
Because the absorption of the ultrasonic force at the bonded part is significant, and the vibrator
itself generates heat when an electrical input is applied to the vibrator, the bonded part also
becomes extremely hot, causing deterioration of the adhesive itself, Also with adhesive and metal
material. □よ。 41. Workman. えいえmtj&−+2M! 'S Beast It may fall out. Therefore,
the electrical input applied to the vibrator is less than the mechanical strength of the vibrator by
the value of “K” (T :, kJ & “4”, 6 °, 7 °). In order to eliminate the conventional defects,
when bonding the vibrator to the metal plate at -1 °, no epoxy adhesive is used. Using a brazing
material containing a high temperature active metal. The present invention will be described with
reference to FIG. 1 by bonding a ferrite vibrator 1 and a metal plate 2 having a thermal
expansion coefficient close to that of a vibrator such as pure iron or titanium with a brazing
material 3 containing an active metal. The base material 3 used here is one containing a high-
04-05-2019
1
temperature active metal such as titanium in an appropriate ratio, and heated to flow in an
electric furnace to flow and bond. The power test of the vibrator of the present invention was
carried out on an apparatus as shown in FIG. 2 by bonding the metal plate 2 to the (2) ferrite
vibrator 1 of 0 resonance frequency 28 kHz using the brazing material 3 of the present invention
The vibrator metal plate 2 is screwed to the ultrasonic water tank 4 through the rubber backing
6. Put water in the water tank 3 oscillators 8. An electrical input was supplied to the vibrator 1
through the high frequency power meter 7. As a result, no mechanical and thermal abnormalities
were observed even with 100 W of electric power under the condition of an area of 8 cm on the
single sided number emitting surface. The metal plate may be metal foil. In addition to iron and
titanium, metals such as iron and nickel alloys are used. As described above, the vibrator of the
present invention in which a metal plate or metal foil is bonded using a brazing material
containing a high-temperature active metal does not break or drop off even when a large power
is supplied, and an efficient ultrasonic output There is an advantage that can be obtained.
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