Manufacturing method of mobile phone oscillator

Abstract

The invention relates to a manufacturing method of a mobile phone oscillator, which is characterized in comprising the following steps: (1) mixing tungsten-based alloy powder and water-soluble adhesive at the temperature range of 165-180 DEG C to obtain a mixture; (2) forming a blank of the mobile phone oscillator through compression molding; (3) performing degreasing on the obtained blank of the mobile phone oscillator to remove the adhesive; and (4) performing microwave sintering under the protection of nitrogen to obtain the mobile phone oscillator. Compared with the prior art, the manufacturing method provided by the invention has the following advantages: the water-soluble adhesive is adopted to reduce the degreasing temperature, so as to reduce the holding time during the degreasing; the microwave sintering is adopted to reduce the sintering temperature, so as to shorten the holding time; therefore, the time for realizing the technology is finally shortened above 50%, and the energy consumption is reduced by above 50%.

Description

technical field [0001] The invention relates to a method for preparing parts made of tungsten-based alloy materials. Background technique [0002] The mobile phone vibrator is usually produced by powder compaction molding process, that is, the tungsten-based alloy powder is put into the mold, formed under a certain pressure to form a compact, and then the compact is sintered at a high temperature to obtain a mobile phone vibrator. However, due to the large aspect ratio of the mobile phone vibrator, it is not easy to obtain a compact with uniform density, and the size may be distorted after sintering shrinkage, and the shape and precision of the product are difficult to control. Moreover, the mobile phone vibrator also has complex structures such as steps, and usually requires subsequent machining, with many and complicated processes. [0003] For this reason, the researchers have made technical improvements, see the Chinese invention patent "A Method for Manufacturing Mobil...

AI Technical Summary

Problems solved by technology

However, due to the large aspect ratio of the mobile phone vibrator, it is not easy to obtain a compact with uniform density, and the size may be distorted after sintering shrinkage, and the shape and precision of the product are difficult to control

Moreover, the vibrator of the mobile phone also has a complex structure such as steps, which usually requires subsequent machining, and the process is many and complicated.

[0003] For this reason, the researchers have made technical improvements, see the Chinese invention patent "A Method for Manufacturing Mobile Phone Vibrator" with the patent number ZL200710154684.0 (the authorized announcement number is CN101396734B), the patent is formed once, and the processing accuracy is also high. The process steps are greatly reduced, but the overall process cycle is still long, and the energy consumption is high, mainly due to the complex degreasing and sintering process, high temperature, high energy consumption of the sintering furnace, and long holding time

At the same time, the patent uses toxic organic solvents such as trichlorethylene to degrease, which is not friendly to the environment. In order to increase the fluidity of the feed material in the abrasive mold, more adhesives need to be added for injection molding. After degreasing, the shape is maintained The consistency of property and dimensional shrinkage is not good, which will affect the dimensional accuracy after sintering