Manufacturing process of small-sized thin buzzer piece

A manufacturing process and small size technology, applied in the manufacture/assembly of piezoelectric/electrostrictive devices, electrical components, piezoelectric/electrostrictive/magnetostrictive devices, etc., can solve waste, small size and thin buzzer Problems such as low pass rate of film production

Active Publication Date: 2017-12-15
HUNAN JIAYEDA ELECTRONICS
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a small-sized thin buzzer production process to solve th...

Method used

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  • Manufacturing process of small-sized thin buzzer piece
  • Manufacturing process of small-sized thin buzzer piece
  • Manufacturing process of small-sized thin buzzer piece

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Embodiment Construction

[0039] see figure 1 , is a flow chart of the manufacturing process of the small-sized thin buzzer chip provided by the embodiment of the present invention.

[0040] S100: put the raw materials for making the buzzer sheet into a ball mill for mixed grinding, discharge and dry after 24 hours.

[0041] Specifically, the main raw material for making piezoelectric ceramic buzzers is Pb 3 o 4 、TiO 2 , ZrO 2 , SrCO 3 , the excipient is Nb 2 o 5 , Sb 2 o 3 , MnO 2 、Ni 2 o 3 , When selecting raw materials, attention should be paid to purity, fineness and activity. The principle of purity is not to introduce harmful impurities. Alkaline earth metal oxides are more likely to absorb moisture, and the oxides generated by the decomposition of carbonates during pre-calcination are highly active, which is related to the entire preparation. Process and final product performance. After the raw materials are selected, pre-treatment is carried out to remove impurities and moisture, a...

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Abstract

The application discloses a manufacturing process of a small-sized thin buzzer piece. The manufacturing process comprises the following steps: throwing raw materials for manufacturing the buzzer piece into a ball mill to be mixed and milled, and performing discharging and drying after 24 h; pre-burning the mixed and milled raw materials at 1,040 DEG C for 2 h, and finely grinding pre-burned powder; performing mixed barreling on the finely ground powder, a binder and an organic solvent, and making the obtained slurry into a green body through a casting machine and a sheet-punching machine; sequentially performing rubber discharging, sintering and fragmenting treatment on the green body; brushing segmented products with a silver paste, and performing silver ink firing treatment; adhering the products subjected to silver ink firing to a metal sheet, and performing drying and curing; and polarizing the cured product to obtain a piezoelectric ceramics buzzer piece. According to the manufacturing process provided by the application, the technological order of polarization and adhesion in a conventional process are reversed, the manufactured piezoelectric ceramics buzzer piece is thicker than a buzzer piece manufactured by the conventional process, the product reliability is not influenced, the technological difficulty in producing the small-sized thin buzzer piece is reduced, the qualification rate is greatly improved, and waste is avoided.

Description

technical field [0001] The invention relates to the technical field of buzzer chip production, in particular to a manufacturing process of a small-sized thin buzzer chip. Background technique [0002] The piezoelectric buzzer is a piezoelectric element that uses the piezoelectric effect to excite bending vibration under the action of an electrical signal, also known as a piezoelectric vibration plate, because it has low power consumption, high reliability, and harsh work Environmental protection, not susceptible to electromagnetic interference and other advantages, so it is widely used in household appliances, machinery and equipment, vehicle anti-theft, home security and other work fields. [0003] The common piezoelectric ceramic buzzer is a piezoelectric ceramic (PZT) made of oxides of zirconium, titanium, and lead and then sintered. At present, the process of making a PZT piezoelectric ceramic buzzer is: ingredients—ball milling (mixing Grinding - pre-burning - fine gri...

Claims

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Application Information

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IPC IPC(8): C04B41/88C04B35/64C04B35/626H01L41/257H01L41/33H01L41/339
CPCC04B35/6261C04B35/64C04B41/5116C04B41/88C04B2235/661H10N30/045H10N30/08H10N30/089
Inventor 白春锋施小罗刘志潜何龙
Owner HUNAN JIAYEDA ELECTRONICS
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