In this Coherent Inc. virtual open house, join Markus Wolf, Coherent’s manager of R&D, for a 17-min.-plus conversation on developing the right recipe for successful printing using the laser-powder bed process. Wolf discusses how to develop the ideal workflow to move from 3D design file to final object, and discusses the critical parameters—layer thickness, hatch spacing, laser power, scanning speed, spot size and others. The key takeaway from this in-depth discussion: how part density is affected by laser power, hatch spacing and scanning speed.
Below, Inc., Decatur, IL, has been named a top-10 finalist at the U.S.
Air Force (USAF) Rapid Sustainment Office's (AFRSO's) Advanced
Manufacturing Olympics' material hurdles technical challenge, for
developing its cryogenic-treatment process to improve aircraft shelters
and other military-base materials. The 300 Below efforts focused on
improving aluminum alloys used in 3D-printed metal parts. In prior
testing, additive manufacturing (AM) using Type 316 stainless steel,
arguably the most utilized stainless steel by the USAF, yielded a
30-percent improvement in micro-Vickers hardness post-cryogenic
treatment, along with a 35-percent increase in residual compressive
stress, plus a 17-percent decrease in coefficient of friction, which
indicates a significant improvement abrasive-wear resistance.
reports a milestone: producing the first certified, flight-critical
engine part using AM. The part, known as the #4/5 bearing housing, is a
major structural component in the ATF3-6 turbofan engine used on the
Dassault Falcon 20G maritime patrol aircraft. It currently is in
production and installed on an in-service ATF-6.
Designed in the 1960s and certified in 1967, only about a dozen ATF3-6
engines still fly, which presents sourcing and supply chain challenges.
Additionally, according to Honeywell officials, the #4/5 bearing housing
is a complicated part to manufacture, making it costly for operators to
replace due to the low quantity of orders placed. And, high costs for
casting helped make this part a good AM candidate--the parts can be
printed much more quickly and in smaller quantities without the need for