The next generation of North American-built diesel engines, scheduled for introduction during the 2009 to 2011 timeframe, is a bright spot for an otherwise weak powder metal industry. New PM applications include cam gear drives, idler gears, timing system sprockets, and fuel injector gears. Powder-forged connecting rods and PM bearing caps are currently being tested and the outlook is good. General Motors put $69 million into its DMAX diesel engine plant in Moraine, OH to manufacture a new Duramax 6.6-liter V-8 turbo diesel engine that will meet 2010 emissions standards. DMAX Limited is a joint venture between GM and Isuzu Motors Limited and was established as a diesel engine company in 1998. About half of new cars in Europe feature diesel engines, which are more energy efficient than cars with spark ignition systems.
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.
Although plastics make up only about 11% of all US municipal solid waste, many are actually more energy-dense than coal. Converting these non-recycled plastics into energy with existing technologies could reduce US coal consumption, as well as boost domestic energy reserves, says a new study.
This year's Dupont-sponsored WardsAuto survey of automotive designers and other engineers shows lightweighting dominates the discussion. But which materials will help them meet the 2025 CAFE standards are not entirely clear.
Artificially created metamaterials are already appearing in niche applications like electronics, communications, and defense, says a new report from Lux Research. How quickly they become mainstream depends on cost-effective manufacturing methods, which will include additive manufacturing.
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