The latest flat-rolled steels from AK Steel have it in for bacteria and mold spores. Thanks to an ionic-silver and ceramic coating from AgION Technologies (Wakefield, MA), the steels meet the Environmental Protection Agency standards for an antimicrobial agent, according to AK applications engineer Eric Welte. AK can apply the AgION material to both carbon and stainless steels, using either a liquid or a powder coating process. The thickness of the coating varies from 0.2 to 2 mils, depending on abrasion requirements. "You can still see the polish of stainless steel through the thinnest of the coatings," Welte notes. The new steels target HVAC, appliance, food equipment, and medical applications. AK is even building a concept house from the material to show how it keeps mold at bay. What's more, Electrolux's Fridgidaire brand will use the antimicrobial steels in a new line of stainless steel consumer appliances. AK Steel : Enter 515
Stainless beefs up solenoids
The latest stainless steel alloy from Carpenter Technology goes into corrosive operating environments that can spell trouble for solenoids. Carpenter Chrome Core 29 Solenoid Quality Stainless stacks up favorably against Type 430FR stainless. The two materials have similar magnetic properties—including high resistivity—but Chrome Core 29 outshines Type 430FR when it comes to corrosion resistance. In corrosion tests (ASTM G150), Chrome Core 29 exhibited a critical pitting temperature of 14.8C, compared to 5C for Type 430FR. As for magnetic properties, the new alloy offers a saturation flux density of 13.2 kG, coercive field strength of 1.26 Oe, residual induction of 5.20 kG, and a maximum permeability of 1,624. In its annealed condition, Chrome Core 29 has a tensile strength of 586 MPa, a yield strength of 379 MPa, and a Rockwell B hardness of 85. Carpenter Technology Corp. : Enter 516
Say good-bye to beryllium in mold making
For mold-making applications that can benefit from the cooling power of copper, but can do without beryllium, Ampco Metal Inc. has developed a new copper alloy. Called MoldMATE 90, the material features a high thermal conductivity of 90 Btu/ft/hr/°F, better than the 60 Btu/ft/hr/°F offered by a beryllium copper grade (2% Be) commonly used in mold making. At the same time, MoldMATE 90 has enough nickel in it to meet the hardness and mechanical properties that tooling components require. Ampco Metal Inc. : Enter 517
The engineers and inventors of the post WWII period turned their attention to advancements in electronics, communication, and entertainment. Breakthrough inventions range from LEGOs and computer gaming to the integrated circuit and Ethernet -- a range of advancements that have little in common except they changed our lives.
The age of touch could soon come to an end. From smartphones and smartwatches, to home devices, to in-car infotainment systems, touch is no longer the primary user interface. Technology market leaders are driving a migration from touch to voice as a user interface.
Soft starter technology has become a way to mitigate startup stressors by moderating a motor’s voltage supply during the machine start-up phase, slowly ramping it up and effectively adjusting the machine’s load behavior to protect mechanical components.
A new report from the National Institute of Standards and Technology (NIST) makes a start on developing control schemes, process measurements, and modeling and simulation methods for powder bed fusion additive manufacturing.
If you’re developing a product with lots of sensors and no access to the power grid, then you’ll want to take note of a Design News Continuing Education Center class, “Designing Low Power Systems Using Battery and Energy Harvesting Energy Sources."
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.