Micro MIM Japan succeeds in production of 0.03 mm diameter micro nozzle by MIM

July 23, 2019

Micro MIM Japan succeeds in production of 0.03 mm diameter micro nozzle by MIM
A micro nozzle with a hole diameter of 0.03 mm, produced by Micro MIM Japan (Courtesy Micro MIM Japan Holdings Inc.)

Micro MIM Japan Holdings Inc., a division of Tasei Kogyo Co., Ltd., based in Osaka, Japan, reports that it has succeeded in the mass production of a micro nozzle with a hole diameter of 0.03 mm and an aspect ratio of 5 using Metal Injection Moulding. 

Using conventional technology, i.e. machining, it is currently not possible to produce a hole with a diameter smaller than 0.05 mm. By using MIM with very fine metal powder and its µ-MIM technology, Micro MIM Japan was able to realise a 0.03 mm diameter nozzle with a dense and smooth surface and roughness of Ra=0.3, without post-processing.

In the microfabrication of a nozzle, it is difficult to achieve this surface quality even using Laser Powder Bed Fusion (L-PBF) Additive Manufacturing, due to the problem of dross deposits or residual thermal stress. By using micro Metal Injection Moulding, it is possible for Micro MIM Japan to produce ultra-small nozzles with complicated flow paths and good surface quality.


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