CRS
CRS
6:30 PM EDT $45.08 -1.71
CRS
CRS
6:30 PM EDT $45.08 -1.71

A Clean Ti: Iron Pickup Risk in Ti powder

This week we will explore iron pickup risk in Ti powder. Part 2 in this series examined contamination risk at the top of the atomization process, when the electrode of titanium or other pre-alloyed material is heated in the crucible to reach the molten state. (Read Quality Assurance for Gas-Atomized Powders.)

We will follow titanium further into the atomizer on its journey to becoming spherical powder for use in producing 3D-printed parts. As the electrode melts in the crucible molten metal droplets fall into the atomizer tower. The droplets cool in flight and form spherical powder. Gravity pulls the powder into the atomizer. As it impinges the sides of the tower and piping, which are typically made of steel, the hot powder may strip off small amounts of steel from the atomizer. This introduces an iron pickup risk.

In the paper, "Influence of Foreign Particles on Fatigue Behavior of Ti-6Al-4V Prealloyed Powder Compounds," S.W. Schwenker, D. Eylon and F.H. Froes demonstrated the detrimental effects of iron pickup on the end component's properties.

Effect of iron pickup risk on Ti powder parts chart effect of iron pickup risk on Ti powder parts

The severity of iron pickup to finished parts' performance led Carpenter Powder Product's team of metallurgists to research ways to minimize this contamination risk. The result is a patent-pending atomizer, constructed with an all-titanium tower, cone, piping, cyclone and collection container. CPP owns the only all-titanium atomizer of this type in the world. This design eliminates any risk of iron pickup during atomization.

Be sure to inquire about iron pickup risk as you engage suppliers.

Carpenter Technology Corporation Carpenter Technology Corporation

Carpenter Technology Corporation (NYSE: CRS) is a recognized leader in high-performance specialty alloy-based materials and process solutions for critical applications in the aerospace, defense, transportation, energy, industrial, medical, and consumer electronics markets.

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