Cold spray is a technique that is commonly used for metal coatings or repairs. It involves metal powder fed at high pressure through a nozzle and into a heated nitrogen or helium gas stream, where it’s fired at the surface of the part to be coated or repaired. The pressure and the gas give supersonic qualities to the particles, which embed themselves into the surface of the substrate as soon as they hit it. Now Australia’s Commonwealth Scientific and Industrial Research Organization (CSIRO) has adapted that process to create a new additive manufacturing technique.
CSIRO worked with Force Industries to develop the process, which it then patented. Now the technology is being commercialized by a company called Titomic, which is preparing to enter the Australian Stock Exchange later this month. Called Titomic Kinetic Fusion, the technology uses a process similar to cold spray to build up titanium parts layer by layer, rather than simply coating a surface. According to Titomic, it’s like no other additive manufacturing technology. For one thing, it has no limits in terms of shape and size.
said Jeffrey Lang, Titomic CEO and CTO. “The facility we are building at the moment will have a metal 3D printer that’s 9m by 3m by 1.5m…so we are talking about additive manufacturing in a scale that no one can comprehend at this stage. We build things at a lot quicker volume. We can currently deposit 45kg of material per hour. The average 3D printer does about 1kg in 24 hours.”“Not all 3D printing is the same. When people think about 3D printing they think about small, precise parts, but our focus is industrial scale and size is no limitation for us,”
The advantages of Titomic Kinetic Fusion over traditional manufacturing are the same as most other additive manufacturing processes: it’s faster, production costs are lower, and strong, complex parts can be created in one piece without additional tooling, welding or other processing. Better materials can be used, as well, because powders can be created with blended metals and alloys. But in terms of speed and scale, it outshines other forms of 3D printing, says Titomic. There’s also no risk of warping as the powder instantaneously bonds to the surface. It can be used with a wide range of metals, as well as ceramic, glass, stone and plastic.Titomic’s facility is scheduled to be operational in December of this year, and trials will begin in the first quarter of 2018. The company plans to begin putting the technology to the test by 3D printing seamless bicycle frames in one piece – one every 25 minutes. According to Lang, this technology has the potential to provide a huge boost to Australia’s manufacturing industry.
“This whole process started with a focus on Australia’s sovereign capabilities,” he said. “We have lots of mineral sands that hold titanium but the titanium industry is controlled by the Russians. By using Australian resources, we become more cost competitive and we can become a global hub of additive technology.”
Titomic will be debuting on the ASX on September 21. The company is currently valued at $22 million, having raised $6.5 million from investors. Titomic offers a number of services, including design to engineering, rapid prototyping, product testing and validation, material lab services, manufacturing modeling, and finishing.
Discuss this story and other 3D printing topics at 3DPrintBoard.com, or share your comments below.[Source: The Australian]
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