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If you’re looking for constant quality titanium powder on your additive manufacturing process, the issue will not be with the powder itself, however with the method used to produce it.
In our sequence, «A Clear Ti,» we’ll look at key sources of contamination for titanium and other pre-alloyed, gas atomized, spherical powders. Make no mistake: clear matters. Cross-contamination disrupts components production in two key ways:
1. Performance — If an element is going to fail it’s going to at all times be at the point where contamination is present.2. Process Predictability — Even more importantly, suppliers must anticipate and alleviate contamination on the source or the powder supply can grow to be unpredictable which can value you money and smoore time, and doubtlessly clients.
Step one in understanding powder contamination risks is understanding the process used to supply it. We’ve made it as simple as potential on this brief primer.
4 Steps in Gasoline Atomization
Gasoline atomization is a robust know-how for creating pure, free-flowing, pre-alloyed steel powder particles including titanium powders. First, the raw materials is prepared for atomization in a plasma arc melter. This unit melts the powder into lengthy bars or electrodes so they are often fed into the atomizer.
The electrode is placed in the atomizer and heated till molten metallic drips off the tip of the electrode till all but the end of the electrode is consumed. Because the molten metallic drips into the atomizer tower it is met by a stream of excessive-strain, inert gasoline, sometimes argon or nitrogen.
The collision breaks the stream into into spherical powder particles that solidify in flight. The particles have the same chemistry as the molten stream, hence the time period pre-alloyed.
Four Advantages of Gasoline Atomization
While it is vital to grasp and manage contamination danger in order to make sure consistent powder high quality, gas atomization presents some important advantages over different pre-alloyed particle manufacturing:
1. Chemistry Management: Gasoline atomization produces very pure powders that support extremely tight chemistry tolerances. Which means they can be custom-made to fulfill stringent application requirements. 2. Powder Morphology: Gas atomized powders are spherically shaped. 3. Extensive Particle Dimension Distribution (PSD): A wide PSD allows for prime packing density, which maximizes the quantity of powder in a given volume. Because they are free flowing they are perfect for additive manufacturing applications where powder move is essential. 4. Highly Versatile Capability: Gas atomizers can produce a few pounds to a number of tons in a single heat with equal ease.