A free guide to welding stainless steels has been put out by the Lincoln Electric Company (www.lincoln-electric.com). Aptly titled Stainless Steels—How to Weld Them—Where to Use Them, the guide discusses the weldability of various stainless steels and offers advice on how to pair each type of stainless steel with the appropriate filler metals. It also includes information on arc welding processes, weld preparation, and operator techniques.
Producing high-quality end-production metal parts with additive manufacturing for applications like aerospace and medical requires very tightly controlled processes and materials. New standards and guidelines for machines and processes, materials, and printed parts are underway from bodies such as ASTM International.
Engineers at the University of San Diego’s Jacobs School of Engineering have designed biobatteries on commercial tattoo paper, with an anode and cathode screen-printed on and modified to harvest energy from lactate in a person’s sweat.
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