What Is Titanium alloy powder injection molding?

Titanium alloy powder, MIM titanium parts in intelligent wear, 3C electronics, medical devices and other aspects of the product application.




MIM titanium alloy foreground


Titanium and titanium alloys are widely used in aerospace and medical devices because of their high specific strength, high corrosion resistance and excellent biocompatibility. However, they are limited by the low efficiency, large waste and poor performance when they are processed by traditional machining methods. Metal injection molding (MIM) is a new near-net forming technology, which is considered as an ideal process for preparing titanium and titanium alloys because it can produce complex structures, high dimensions and high precision parts at a lower cost. At present, the mainstream titanium MIM process is to first mix titanium alloy powder and binder to obtain a uniform and stable feed, and then obtain the green blank that meets the requirements through injection molding. Then, according to different binder systems, the binder in the green blank is removed, and the required parts are obtained through sintering and post-treatment.


Technical difficulties of MIM titanium alloy


At present, the research of MIM titanium and titanium alloy has made some progress, but there are still some difficulties in large-scale industrial application. The main points are as follows:

1. Low oxygen spherical titanium and titanium alloy powder is expensive; Although the domestic manufacturers of spherical titanium and titanium alloy powder have developed rapidly in recent years, there is still a certain gap between them and the world’s leading technology.

2. Selection of binder and degreasing removal process; The selection of binder determines the size of powder filling, which has a direct effect on the density, shrinkage and surface roughness of sintered products. The efficient degreasing removal process helps to reduce the influence of impurity elements, such as C and O, and improve the product performance.

Post time: Feb-09-2023