Vibrator material for mobile phone vibrating motor and preparation

Abstract

The invention relates to a vibrator material used for a vibration motor of a mobile phone and a preparation method thereof; wherein, a tungsten-nickel-copper alloy with the purity of equal to or more than 99.9 wt percent is adopted as the vibrator material with the contents of 95 to 97 wt percent of tungsten, 2-3 wt percent of nickel and 1 to 2 wt percent of copper. The preparation method of the vibrator includes the procedures of material mixing, adhesive mixing in, alloy powder granulating, particle screening of alloy powder, pressure casting and forming, sintering, postprocessing and the like. Compared with the prior art, the invention has the advantages that the vibrator of the vibration motor of the mobile phone is produced by using the tungsten-nickel-copper alloy material with highspecific gravity and is characterized by high gravity, intensity and rigidity, small expansion coefficient and good corrosion and oxidation resistance; nicer vibration quality, running stability and service life can be acquired; simultaneously, the invention can effectively decrease the volume of the vibration motor of the mobile phone and reduce the cost. The preparation method is high in industrial automation degree and production efficiency, simple in technological operation and good in property of prepared finished product.

Description

technical field [0001] The invention relates to mobile phone spare parts, in particular to vibrator materials and preparation methods for mobile phone vibration motors. Background technique [0002] As we all know, the vibration of the mobile phone is realized by vibrating the vibrator of the vibration motor arranged in the mobile phone. As an inertial motion element, the vibrator is required to have high specific gravity, high strength and high hardness, as well as small expansion coefficient, good corrosion resistance and oxidation resistance; in order to achieve good vibration quality, operation stability and service life of the mobile phone. [0003] Such as the utility model patent of Chinese Patent Application No. 200520072099.2 "New Mobile Phone Vibration Motor Vibration Structure Improvement", it includes a rotor and a stator, and the rotor coil is fixedly provided with a load block, and the load block is an iron bar; due to the small proportion of the iron bar, The...

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Problems solved by technology

[0006] However, the existing high specific gravity tungsten alloy still needs to be improved in terms of strength and hardness due to its imperfect alloy composition and process method; the prepared vibration motor has a large volume and high cost

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