Stratasys has announced its new H Series family of Selective Absorption Fusion (SAF) 3D Printers, designed for mass production using a process developed in partnership with printhead experts Xaar.
SAF technology is used to jet ‘high energy-absorption’ fluid onto selected areas of each layer of powder in a single, full-width pass.
The industrial piezoelectric print heads jet single or multiple drops of the fluid to produce either fine detail or large areas, without compromising throughput, while infrared energy is radiated to fuse the selected areas and the underlying particles.
Stratasys says its H Series will support “unique, high-specialty, functional fluids to process a broad range of powders”, and suggests that the H Series’ thermal control has been fettled to avoid common binder jetting problems such as warping, quality fall-out, and helps to reduce the necessary peak temperatures required in the bed, making SAF technology ideal for long stint production.
Stratasys H Series technology includes the proprietary Big Wave powder management system to ensure the necessary powder is distributed across the whole print bed, maintaining a large, thermally stable wave of powder.
Any overflow powder is quickly recirculated, minimising powder thermal exposure and reducing powder ageing. Stratasys says that the result is less fresh powder required and lower operational costs.
Little has yet been mentioned about what powders will be available at launch, although the sample parts shown are reported as PA11, while Stratasys states that like other powder-bed fusion technologies, SAF is able to process a wide variety of polyamides and elastomers.
“Representing the culmination of more than 10 years of research and development, SAF-based 3D printers can deliver a competitive cost per part at production level throughput and with the part quality, consistency and reliability that ensures satisfaction and high production yield,” said a Stratasys spokesperson.
SAF 3D Printing has been in the pipeline publicly since Xaar 3D and Stratasys partnered in summer 2018 to leverage Xaar’s industrial piezo inkjet printheads, taking aim at HP’s MultiJet Fusion binder jetting technology, which has grown at a rapid rate.
Initially billed as ‘High Speed Sintering’, it remains to be seen how the Stratasys SAF matches up to the latest line of HP MJF production units, which have stolen a march in terms of large scale installs (including Stratasys’ own online manufacturing portal Stratasys Direct), as well as complementary industry partnerships, such as those with Dyndrite, DyeMansion and AMFG.