December 04, 2018 Volume 14 Issue 45

Mechanical News & Products

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Top Tech Tip: Save space and weight with Smalley Wave Springs

Smalley Wave Springs offer the unique advantage of space savings when used to replace coil springs. By reducing spring operating height, wave springs also produce a decrease in the spring cavity. With a smaller assembly size and less material used in the manufacturing process, a cost savings is realized. Over 4,000 springs available from stock or utilize Smalley's No-Tooling-Cost™ manufacturing process on custom designs, available from .157" to 120". Samples available for testing.
Learn more.


Helpful tips for molding PEEK polymer

Are you a first-time molder of PEEK? Or maybe you've tried molding it and have run into problems? This article from Victrex presents five important considerations in the injection molding process that can help you avoid the need for troubleshooting when molding PEEK polymer. Following this advice can also help you optimize the full potential of this high-performance material.
Read the Victrex tips article.


Cool Tools: New Artec LEO 3D scanner

Exact Metrology is proud to announce the availability of its Artec LEO 3D scanner, the first scanner to offer onboard automatic processing with an integrated touch panel viewer. This frees users from being tied to a computer for data capture. The scanner has a 3D reconstruction rate of 80 frames per second, making it the fastest professional scanner on the market. With its large field of view, Artec LEO can scan and process large objects and scenes quickly and accurately, and it boasts a data acquisition rate of up to 4 million points per sec.
Learn more.


Clippard PTFE multi-channel gradient valves

NIV series gradient valves feature multiple two-way, normally closed solenoids connected around a central body. This unique design provides significant reduction in internal volume with enhanced mixing capabilities. Each actuator operates independently, allowing for flow of various media to be mixed or for one media to be split into multiple streams. These multi-channel gradient valves are useful for solvent selection, stream splitting, flushing, and other automated applications.
Learn more.


Top Product: Allite Super Magnesium

Weighing 33 percent less than aluminum, while also being stiffer and stronger pound for pound, the new Allite Super Magnesium alloy has shown its mettle in classified defense and aerospace applications. Now it's available for wider use. This material is less expensive than carbon fiber and has the lowest carbon footprint of any structural material throughout the value chain. Industry applications include home improvement, sporting goods, aerospace, automotive, biking, and beyond. Three alloy variants available to suit welding, forming/forging, or casting. These alloys feature excellent shock-absorption properties, good electromagnetic shielding performance, good heat dissipation, and recyclability. Allite is based in Dayton, OH.
Learn more.


Replace metals with hard materials

The use of sapphire, ceramics, and other hard materials has significant advantages over metal, depending on the application. The materials machined at Insaco are harder and stronger in compression than most metals. They can be electrically or thermally insulating or conducting, and in the case of sapphire, can be polished optically clear to a surface finish less than 1 micro inch. This allows for selecting a material based on the most important material property required and allows for versatility in selecting the material that makes the most sense. When a low-cost part must be frequently replaced because of a harsh environment, looking to hard materials may be the key to lowering overall cost. Learn more about metal replacement materials in this informative Insaco article.
Read the full article.


HVACR Tech Tip: How to properly clean a condenser coil

Condenser coil cleaning is one of those subjects where there is a fair amount of misdirection and misinformation being propagated by some manufacturers/distributors that has caused unfortunate confusion in the industry. Parker Hannifin provides answers to common questions to set the record straight. Why do condenser coil cleaners foam, and evaporator coils usually don't? What is the difference between the acid and non-acid condenser coil cleaners? Learn these things and more in this informative post.
Read the Parker Hannifin blog.


Vulcanized rubber spacer disks with a steel plate

The GN 438 rubber spacer disks from JW Winco provide a dampening and muffling function, protecting surfaces from damage. By stacking several spacer disks on each other, the spring rate of the package can be increased, which opens up new possibilities for use. When used as a foot disk, type A is attached using screws and can be installed on small machines, systems, or devices. Alternatively, the type B version can be adhered to all suitable and clean surfaces by means of an adhesive pad. The steel disk plate is zinc plated, with a blue passivated finish, while the black rubber underlay is vulcanized and is temperature resistant up to 248 F.
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Desktop Metal launches 316L stainless steel for 3D printing

Desktop Metal, a 3D-printer maker, has just announced the launch of 316L stainless steel for the company's Studio System, the world's first and only office-friendly metal 3D-printing system. This machine is great for prototyping and low-volume production. A fully austenitic steel known for its corrosion resistance and excellent mechanical properties at extreme temperatures, 316L is well suited for applications in the most demanding industrial environments, including salt water in marine applications, caustic cleaners found in food processing environments, and chemicals in pharmaceutical manufacturing.
Learn more.


Benefits of using military-grade adhesives in your applications

Some epoxy compounds successfully meet thermal stability testing standard ASTM D3850-12 per MIL-STD-883J Section 3.5.2 and 3.8.5 for military applications, however these systems can also be used across many other industries where thermal stability is an important requirement. Some common non-military applications that benefit from compounds that pass MIL-STD-883J include downhole oil equipment, lasers, satellite systems, electronics, power tools, and various automotive applications.
Learn more from Master Bond.


How a camera auto-focus lens uses a special spring

Ultrasonic motors are small motors, some measured in millimeters, that are being used in a variety of applications including the auto-focus feature on a camera lens, side mirrors, surgical equipment, and robots. Learn how a single-turn closed wave spring is used to maintain the necessary pressure against the motor stator in a camera, and why it is a better choice in this application over coil or washer-type springs.
Read the Rotor Clip application note.


How electronic flow sensors help spread road salt

Salt spreading trucks use a pre-wetting system when ice needs to be removed from roads and the temperatures are too low for direct salt spreading to work. The system sprays salt water onto the road salt as it is being spread to "jump start" the melting process. But how do you monitor the amount of pre-wet salt used?
Read this short, informative blog from Gems Sensors & Controls.


Top Tech Tip: Save space and weight with Crest-to-Crest® Wave Springs

Crest-to-Crest® Wave Springs can take up to 50% less space than a traditional coil spring. Formed using flat wire, this results in a more compact spring that takes less material to produce and can reduce the overall weight of the spring and assembly.
Learn more.


SOLIDWORKS add-in for Xometry turbocharges part outsourcing

The Xometry Add-In for SOLIDWORKS v4.0 is a powerful tool that integrates directly with Xometry's Instant Quoting Engine, allowing engineers to simultaneously design parts and weigh considerations of cost and lead time in a single CAD environment. Machine learning algorithms give you an instant price by analyzing the part's geometry and factor in manufacturing requirements such as the process, material, features, finish, and inspection type. Then, the add-in provides lead time, cost, and manufacturability (DFM) feedback in seconds. Includes CNC machining, 3D printing, sheet metal, urethane castings, and other manufacturing methods.
Learn more.


Springs made of high-performance, engineered plastic

Lee Spring's LeeP plastic composite compression springs molded from Ultem resins provide critical advantages over traditional metal alloy springs. They feature high strength-to-weight ratio, no magnetic interference, high corrosion resistance, and dielectric insulation for non-conductive applications. They are stocked in a variety of standard sizes, each available in a "rainbow" of strengths formulated from different Ultem resins. They were designed to meet a wide range of spring applications where non-corroding, non-metallic, inert materials are preferred.
Learn more.


Researchers find intrinsic 'fingerprints' that could detect tampered steel parts

David Mascarenas, a research and development engineer at Los Alamos National Laboratory, used Barkhausen noise to find unique-looking "fingerprints" in steel that could help to verify weapons treaties and reduce the use of counterfeit bolts in the construction industry.

 

 

 

 

Researchers using magnetic signals have found unique "fingerprints" on steel that could help to verify weapons treaties and reduce the use of counterfeit bolts in the construction industry.

"Magnetic signals provide a wide range of possible national security applications," said David Mascareñas, a research and development engineer at Los Alamos National Laboratory and lead author of the study published recently in the journal Smart Materials and Structures. "It's a promising phenomenon that we hope to leverage to uniquely identify different pieces of artillery."

In the research, funded by the U.S Department of State, researchers applied Barkhausen noise, a magnetic phenomenon, to two types of steel -- conventional steel and an abrasive-resistant type of steel used in mining equipment. A sensor measured electromagnetic signals by repeatedly scanning the different kinds of steel over a period of time. Researchers compared the signals from those two sets of scanned images and found signatures that were instrinsic to each type of steel.

The variations that occur from the production of various kinds of steel are reflected as distinct fingerprints. "They seem to be repeatable," said Mascareñas.

That intrinsic signature could help to discover counterfeit or low-grade steel parts in construction by looking for differences in the electromagnetic signatures. "It could also help solve that big problem in that industry," said Mascareñas.

Future research could involve studying other types of steel and developing a handheld sensor for treaty verification.

Publication: "Barkhausen noise as an intrinsic fingerprint for ferromagnetic components, in Smart Materials and Structures. Authors: David Mascareñas, Michelle Lockhart, Thomas Lienert.

Source: DOE/Los Alamos National Laboratory

Published December 2018

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