Design engineers are fuming mad about the lack of decent options for cadmium as a plating material. A couple made comments in a recent study conducted by the Reed Business Information Research Department for Design News. “We need an environmentally friendly replacement with decent cost and performance,” says an engineer who designs equipment for in house use. ”These days, cadmium is effectively banned for environmental reasons, but none of the possible replacements meet all the performance requirements.” Cadmium has been widely used as a plating material because it offers good corrosion resistance, cathodic protection of steel, galvanic compatibility with aluminum, as well as excellent lubricity. Cadmium can be dyed to many colors and can be used as a final finish or a paint base. Inhalation of cadmium-containing fumes can result in chemical pneumonitis, pulmonary edema, and death. Human exposures to environmental cadmium are primarily the result of the burning of fossil fuels and municipal wastes It’s one of six substances banned by the European Union’s Restriction on Hazardous Substances (RoHS) directive.
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Last week, the bill for reforming chemical regulation, the TSCA Modernization Act of 2015, passed the House. If it or a similar bill becomes law, the effects on cost and availability of adhesives and plastics incorporating these substances are not yet clear.
The latest crop of coating and sealant materials and devices has impressive credentials. Many are designed for tough environments with broad operating temperature ranges, and they often cure faster, require fewer process steps, and produce less waste.
A new program has been proposed for testing and certify 3D printing filaments for emissions safety. To engineers who've used 3D printers at home this is a no-brainer. It's from a consumer on Kickstarter, and targets use in homes and schools.
For the last 50 years, the Metal Powder Industries Federation (MPIF) has sponsored an awards competition for creative solutions to designing and fabricating near-net-shape parts using powder metal (PM) technologies. Here are the seven Grand Prize winners of the 2015 contest.
Graphene 3D Lab has added graphene to 3DP PLA filament to strengthen the material and add conductivity to prints made with it. The material can be used to 3D print conductive traces embedded in 3D-printed parts for electronics, as well as capacitive touch sensors.
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