VIDEO: Process Parameter Development for Laser Powder Bed Fusion

September 2, 2020

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Coherent video
VIDEO: Process Parameter Development for Laser Powder Bed Fusion
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.

Cryogenic Processing of Printed Stainless-Steel Parts Earns 300 Below U.S. Air Force Recognition
300 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.

Honeywell Achieves FAA Certification for AM Flight-Critical Engine Part
Honeywell 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 expensive tools.

Industry News
Bassetti Webinar Covers AM Material and Build Monitoring and Management
Desktop Metal Going Public, Using Funds for Product Development and Growth
Link3D Tapped for Digital Upgrade of 3D Systems On-Demand Manufacturing
Post-Processing Sustainability Opportunities in AM

Summer 2020
In This Issue
Manufacturing Aluminum Alloys With 3D Printing
Researchers have successfully 3D printed 6061 and 7075 aluminum alloys by adding nanoparticle grain refiners to the metal powders prior to processing.

Mastering Workflow for Part Qualification
Follow the advice offered here when stepping through the development of an additive manufacturing workflow for part, machine and process qualification.

Coming in 3DMP's Fall 2020 Issue
  • Software for Metal AM
  • Laser DED
  • Quality Control
  • Machine Learning for 3D Printing

Industry-Related Terms: Alloys, Bed, LASER, Stainless Steel, Thickness
View Glossary of Metalforming Terms



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