John DeLalio is the director of new business development at EB Industries, LLC, 631-293-8565, Fax: 631-752-7866, 90 Carolyn Boulevard, Farmingdale, NY 11735, www.ebindustries.com.
The 3D metal printing process is prone to capture microscopic inclusions and voids in the material. When these parts are welded, these micro voids coagulate into large bubbles of porosity that weaken the weld due to stress concentration in the area of the porosity. John DeLalio of EB Industries explains how electron beam welding can be used to address this issue.