Next generation sand printer for production applications utilizing flexible printer settings to optimize and reduce the volume of sand required, minimizing production time and cost.
This project seeks to develop and demonstrate fast 3D sand printing technology hardware that would be affordable to small and medium-sized enterprises while developing a knowledge-base of design rules to enable design optimization in metal casting to reduce overall manufacturing costs.
Two key barriers to the adoption of AM sand printing in the metal casting industry are costs (both capital and consumables) and process speed. 3D sand printing can enable new casting designs with reduced mass, part consolidation, and complex fluid flow channels. Mass manufactured vehicle optimization efforts, including improved fuel economy and lower emissions, would benefit from AM sand printing, but slow process speeds and high cost limit integration into production operations. Cast assemblies are often a barrier to vehicle platform innovation due to long lead times and affiliated cost to develop hard tooling. Critical cast assemblies required to maintain readiness for military platforms represent supply chain vulnerability due to lost tooling and reduced participation from small and medium-sized enterprises (SMEs) in the defense casting supply chain.
The objective of this project is to accelerate and drive industry commercialization efforts involving utilization of sand printing for production of lighter castings which would result in vehicle platform innovation while increasing U.S. manufacturing efficiency. The project seeks to demonstrate fast printing technology hardware that is affordable to the domestic metal casting supply chain; develop knowledge-based design rules to enable a culture change and break the cycle of designing AM parts like cast or machined parts; and execute industry-valued workforce outputs to accelerate widespread technology applications and support regional manufacturing systems integration.
Tinker Omega continues to evolve a next generation binder jetting of sand approach to facilitate SMEs utilization of multiple open-source bonding resins and aggregates meeting both regulatory requirements and casting process needs. These new printer systems promise to be more affordable both at initial purchase as well as during operation via an open source approach to consumables utilization. The University of Northern Iowa (UNI) is assessing Tinker’s molds against industry standards and sand molds/cores produced by Viridis3D. UNI and Pennsylvania State University are advancing the initial development of knowledge-based rules for casting design optimization.
The American Foundry Society (AFS) is developing e-learning modules and instructor led training to facilitate education of new workers in this space. The material covers the basics of 3D printed mold concepts and applications. Northeastern Iowa Community College (NICC) is working on a curriculum for a two-day printer operator class to augment OEM printer operator training. This curriculum to be utilized by community colleges, trade schools, or SMEs focuses on the basics of manufacturing and introduces the concepts of AFS mold quality inspection and basic casting processes to build the operator’s knowledge of how the molds produced by fast printers must meet quality specifications, possess robust qualities to facilitate shipping, and ultimately produce a quality casting.
Other Project Participants
- Tinker Omega Manufacturing LLC
- Youngstown State University
- American Foundry Society
- Humtown Products
- Ford Motor Company
- Product Development & Analysis, LLC (PDA, LLC)
- University of Northern Iowa
- North East Iowa Community College
- U.S. Department of Defense
- National Science Foundation
- U.S. Department of Energy
Updated: November 8, 2018