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Pre-stress applying process of ceramic balls

A ceramic ball and prestressing technology, which is applied in the field of transducers, can solve the problems that ceramic balls cannot be applied with prestressing, and achieve the effect of improving reliability and stability and improving voltage resistance performance

Active Publication Date: 2019-06-25
HAIYING ENTERPRISE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a ceramic ball prestressing process to solve the problem that the ceramic ball cannot be prestressed at present

Method used

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  • Pre-stress applying process of ceramic balls
  • Pre-stress applying process of ceramic balls
  • Pre-stress applying process of ceramic balls

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Embodiment 1

[0023] The invention provides a ceramic ball prestressing process, the process steps are as follows: image 3 shown. The application process of the ceramic ball prestressing force comprises the following steps:

[0024] Step S11, cutting the FRP into a spherically expanded shape;

[0025] Step S12, soaking the FRP with epoxy glue;

[0026] Step S13, coating the glass fiber reinforced plastic on the surface of the ceramic ball.

[0027] Specifically, the fiberglass is cut into such as Figure 4 The unfolded shape of the spherical surface is shown; wherein, the shape of the FRP is adapted to the size of the ceramic ball so as to fit the ceramic ball better. Soak the cut glass ball in epoxy glue, take it out and apply it on the surface of the ceramic ball, and finally tighten the ceramic ball and the glass fiber reinforced plastic together through a net bag, as shown in Figure 5 shown.

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Abstract

The invention discloses a process for applying pre-stress to a ceramic ball, and belongs to the technical field of transducers. The process comprises the following steps: firstly, cutting glass fiberreinforced plastic into an unfolded shape of the surface of the ceramic ball; impregnating the glass fiber reinforced plastic with epoxy glue; covering the surface of the ceramic ball with the glass fiber reinforced plastic; and finally, tightening the ceramic ball and the glass fiber reinforced plastic together by using a net bag. According to the process, the problem that the ceramic ball exertspre-stress is solved, the voltage resistance of the ceramic ball is improved, and the reliability and the stability of the ball type piezoelectric transducer are greatly improved.

Description

technical field [0001] The invention relates to the technical field of transducers, in particular to a ceramic ball prestress application process. Background technique [0002] At present, most underwater acoustic transducers use piezoelectric ceramics as the active material, and a variety of piezoelectric transducers are formed by combining piezoelectric ceramics with different shapes and structural parts. The piezoelectric transducer mainly excites the internal piezoelectric ceramics through voltage, causing the piezoelectric ceramics to expand and contract, thereby realizing the emission of sound waves. However, the tensile stress of piezoelectric ceramics is much smaller than the compressive stress, which will lead to cracking of piezoelectric ceramics under the action of strong voltage. Therefore, when making piezoelectric transducers, precompressive stress is usually applied to piezoelectric ceramics to make them Tensile stress does not appear in the work. [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/81
Inventor 苏彬
Owner HAIYING ENTERPRISE GROUP