High-temperature molten aluminum corrosion resistance ultrasonic horn and production method thereof

An ultrasonic horn, high temperature resistance technology, applied in the ultrasonic field, can solve the problems of vibration frequency shift, emission efficiency decline, short service life, etc., achieve the effect of small kinetic energy and impact force, improve compactness, and enhance high temperature resistance

Inactive Publication Date: 2013-02-20
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention overcomes the defects in the prior art, solves the technical problems that the original ultrasonic horn will be corroded rapidly in the aluminum liquid, which will cause the vibration frequency to shift, the emission efficien

Method used

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Experimental program
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Embodiment Construction

[0023] 1. Configure Ni-Cr-Al alloy powder 100g, wherein the weight of Al powder is 6g, the weight of Cr powder is 17g, the remainder of Ni powder, and the particle size is 200 mesh.

[0024] 2. Configure A1 2 o 3 with TiO 2 A mixture of particles with a particle size of 250 mesh, of which TiO 2 The mass percentage content of Al is 15%, Al 2 o 3 The content is 85%.

[0025] 3. No. 30 carbon steel has been quenched and tempered, and processed into a stepped shape on a lathe.

[0026] 4. Soak the sample in NaOH solution with a concentration of 60g / L for 30 minutes to remove the oil and other pollutants left on the surface of the substrate after grinding.

[0027] 5. After cleaning and drying, use 80-mesh mixed sand for sandblasting.

[0028] 6. Wash the substrate with water and acetone in turn and dry to keep the sample surface clean.

[0029] 7. Preheat the substrate with plasma flame, and then spray Ni-17Cr-6Al with a thickness of 0.7mm. The process parameters of plas...

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Abstract

The invention aims at providing a molten aluminum corrosion resistance ultrasonic horn which is made of No.30 carbon steel. After heat treatment tempering, an Al2O3 and TiO2 composite ceramic coating is warped on the outer surface of the horn in plasma spraying method, wherein TiO2 occupies 10-25% according to proportion, and the thickness of the coating is 2-6mm. Compared with the traditional horn, the ultrasonic horn has excellent chemical stability and corrosion resistance, and the practical problem that the Al2O3 ceramic layer is crisp and brittle is solved by adding TiO2 particles, vibration frequency stability of the ultrasonic horn is ensured, and the ultrasonic horn is offset, is improved in emission efficiency and prolonged in service life. The molten aluminum corrosion resistance ultrasonic horn is made of inexpensive carbon steel instead of expansive titanium alloy materials, effectively reduces cost and has good economic benefit.

Description

technical field [0001] The invention belongs to the field of ultrasonic technology, and in particular relates to a high-temperature-resistant and corrosion-resistant ultrasonic horn suitable for use in molten aluminum. Background technique [0002] The main function of the ultrasonic horn is to gather energy, and it can also be used as a mechanical impedance converter to perform impedance matching between the transducer and the acoustic load, so that the ultrasonic energy can be transmitted from the transducer to the load more effectively. When the ultrasonic wave propagates in the molten aluminum, it can improve the structure of the molten aluminum through the cavitation effect, refine the grains, and improve the mechanical properties and wear resistance of the molten aluminum. However, molten aluminum is equivalent to a strong metal corrosive agent, which corrodes the horn very quickly. Traditional ultrasonic horns often have corrosion holes of different sizes due to the ...

Claims

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Application Information

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IPC IPC(8): B32B15/04B32B18/00C23C4/14C23C4/08C23C4/10C23C4/073C23C4/11C23C4/134
Inventor 焦雷赵玉涛李惠尚华张忠忠夏天福
Owner JIANGSU UNIV
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