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Damping elements, stoppers, and rubber buffers

JW Winco provides a wealth of variants to serve every application when it comes to vibration damping elements for alternating tensile and compressive loads. JW Winco has 40 standard parts covering several hundred article numbers in its selection -- from simple rubber buffers like GN 353 to more complex designs such as GN 148.3 that can take up to 17,600 newtons of compression. These elements have a core of natural rubber, because this still offers the best damping values, unmatched by synthetic elastomers or silicone materials.
See the full line that JW Winco offers.

Stratasys moves beyond polymers: Metal 3D printing

Stratasys, the global leader in polymer additive manufacturing, is getting into metals by investing in industrial metal 3D-printing company Tritone Technologies. The agreement brings cutting-edge, production-grade metal and ceramic technology to Stratasys' service portfolio. At the core of Tritone's offering is its MoldJet^® technology, the only powder-free AM technology that enables the high-throughput production of metal and ceramic parts at industrial scale and speed that overcomes previous challenges.
Learn more about this exciting development.

TS0501: Pushing the limits of aerospace machining

Seco has launched TS0501, a Duratomic^® finishing grade engineered for exceptional performance in turning modern high-hardness superalloys as well as traditional materials such as Inconel 718. Designed for lights-out machining, TS0501 delivers unmatched tool life, surface finish, and reliability in demanding aerospace and energy applications. The insert's wear resistance and thermal stability make it ideal for industries where component integrity is critical.
Read the Seco article.

Most powerful heatsink: Extreme CPU cooling

Learn how 3D Systems played a crucial part in developing "the world's most powerful AI-designed and metal 3D-printed liquid nitrogen (LN2) heatsink for extreme CPU cooling." The heatsink was created using 3D Systems' Direct Metal Printing tech utilizing certified oxygen-free copper for superior thermal conductivity. An eccentric application that pushes the boundaries of thermal management.
Read the 3D Systems blog.

When metals can't survive: Machined ceramics as an alternative

Technical Ceramics are so hard and wear resistant that they cannot be machined with conventional tools -- but they can outlast and outperform other materials in demanding or harsh applications. INSACO's proprietary diamond grinding process and specialized techniques developed over many decades allow the company to produce and document parts to exacting specifications consistently. Learn all about the alternatives you have when metals just can't take it.
Read the INSACO article.

Build-to-order knobs and hand hardware

Rogan Corp.'s innovative use of two-shot plastic injection and insert molding has been providing customers with high-quality plastic clamping knobs, levers, and control knobs for more than 90 years. Rogan offers concurrent engineering, product design, and assistance in material selection to ensure customer satisfaction for standard or customized parts, with a focus on cost optimization and on-time delivery. Custom colors, markings, decorative inlays, or engineered materials to meet special requirements, such as adding extra strength or utilizing a flame-retardant material, are all offered.
Learn more.

Why switch from weld fasteners to clinch fasteners?

According to the experts at Penn-Engineering, engineers usually make the switch from weld fasteners to self-clinching fasteners due to two key motivators: environmental impact and cosmetic appeal. Additional benefits often materialize, though, that have positive effects on time, costs, and end-product quality. Find out how.
Read this PennEngineering PEM blog with real-world examples.

Tech Tip: How to create high-quality STL files for 3D prints

Have you ever 3D printed a part that had flat spots or faceted surfaces where smooth curves were supposed to be? You are not alone, and it's not your 3D printer's fault. According to Markforged, the culprit is likely a lack of resolution in the STL file used to create the part.
Read this detailed and informative Markforged blog.

Metal 3D printing: Right at your desktop

From prototyping to tooling or batch production of end-use parts, the Studio System 2 from Desktop Metal brings metal 3D printing to any office, studio, or lab setting. This powder- and laser-free system consists of an easy-to-adopt two-step process: print using pre-bound metal rod feedstock and then sinter. It requires minimal training and operator intervention. Combined with next-gen Separable Supports and a software-controlled workflow, the Studio System makes metal 3D printing simpler than ever. This platform offers more materials than any other metal extrusion 3D-printing system on the market. They include Inconel 625, titanium (Ti64), copper, tool steels, and stainless steels.
View the video and learn more.

What is laser peening for metal components?

According to Curtiss-Wright, laser peening (also called laser shock peening) "drives deep plastic strain into a part that creates a high-magnitude residual compressive stress from 1 to 10 mm below the surface." This process involves hitting a part surface with a laser repeatedly through a stream of water, offering designers the ability "to surgically engineer residual compressive stress into key areas of components." Benefits include enhancements to fatigue strength, durability, damage tolerance, and resistance to stress corrosion cracking of critical metallic components.
Read the extensive Curtiss-Wright article.

Full-color 3D-printing Design Guide from Xometry

With Xometry's PolyJet 3D-printing service, you can order full-color 3D prints easily. Their no-cost design guide will help you learn about different aspects of 3D printing colorful parts, how to create and add color to your models, and best practices to keep in mind when printing in full color. Learn how to take full advantage of the 600,000 unique colors available in this flexible additive process.
Get the Xometry guide.

New lightweight compound for structural car parts

Following four years of collaboration with the University of Toronto, Axiom is proud to announce the creation of AX Gratek PP40 -- a groundbreaking lightweight, high-strength alternative to heavy glass-filled 40-60% PP components. This hybrid composite features graphene nanoplatelets with glass fibers. Patent pending, this material has achieved up to 20% improvement in tensile strength while achieving an impressive 18% weight reduction compared to commercial PPGF60% parts.
Learn more.

Quickparts making big moves for part making

Quickparts has expanded its Seattle HQ to create an Aerospace & Defense Center of Excellence, strengthening the company's long-standing expertise in high-fidelity casting patterns and advanced stereolithography (SLA). Simultaneously, the company is launching its Quick Mold solution across North America, bringing production-quality molded parts to market in as little as five days.
Read the full article.

Print parts in M300 tool steel: Starter kit

Take your 3D printing to the next level with M300 Tool Steel Filamet™ -- a high-strength and wear-resistant material. Virtual Foundry has released a brand-new M300 Tool Steel Kit packed with everything you need to get started, including: 0.5-kg starter filament spool, Filawarmer, 1 kg of steel blend, 0.5 kg of sintering carbon, and an alumina crucible. From the company that brought us 3D-printable lunar regolith simulant.
Learn more, including print instructions.

Tank cleaning: 360° corrosion-resistant option

For processes requiring efficient tank washing, BETE's HydroWhirl Poseidon offers a unique solution that cleans effectively in tanks containing harsh chemicals or stubborn substances. This slow-spinning tank cleaning nozzle provides complete 360° coverage with longer dwell time on target surfaces; ideal for use in corrosive chemical environments, chemical processing tanks, food and beverage processes, IBC Totes, and more. The unit's bearing-free design delivers a slow, deliberate spray that provides a more effective washdown than conventional rotating designs.
Learn more. Available from EXAIR.

Is your metal too 'gummy' to cut? Draw on it with a Sharpie or glue stick

Your everyday permanent markers, glue sticks, and packing tape may offer a surprisingly low-tech solution to a long-standing nuisance in the manufacturing industry: Making soft and ductile, or so-called "gummy" metals, easier to cut.

What makes inks and adhesives effective isn't their chemical content, but their stickiness to the surface of any gummy metal such as nickel, aluminum, stainless steels, or copper. Such was the finding of researchers at Purdue University and the University of West Florida in a study recently published in Physical Review Applied.

These adhesives help achieve a smoother, cleaner, and faster cut than current machining processes, impacting applications ranging from the manufacturing of orthopedic implants and surgical instruments to aerospace components.

"A wide range of products rely on the machining of gummy metals. These could be something we use every day, such as the valve in a sink faucet, or something more critical like a compressor part in the jet engine of an airplane," said James Mann, assistant professor of mechanical engineering at the University of West Florida and Purdue alumnus.

If a significant improvement can be made to the "machinability" of gummy metals or alloys -- which is how well they cut, drill, or grind -- then there is potential to lower the cost of products, improve their performance, or enable new and improved designs.

"Gummy metals characteristically deform in a very wiggly manner," said Srinivasan Chandrasekar, Purdue professor of industrial engineering. "This wiggly flow involves significant energy consumption, which means that these metals require more force to machine than even some hard metals. We needed to find a way to suppress this wiggly flow."

Getting rid of the wiggles means that the metal now tends to act more like a brittle ceramic or glass in the spot where it needs to be cut.

Purdue researchers have discovered a simple solution for cutting soft gummy metals (left) just as cleanly and easily as hard metals (right). [Credit: Purdue University image/Anirudh Udupa]

 

 

 

 

One well-known way to make the gummy metal brittle is by coating it with a suitable liquid metal, such as gallium in the case of aluminum. Liquid metals like these, however, tend to work too well; diffusing through the surface and causing the whole metal to crumble into a powder.

"This makes the metal being machined unusable," Chandrasekar said.

Other attempts met with limited success tended to be either toxic or result in tears and cracks on the machined surface. The researchers then began to explore other benign chemical media that would cut cleaner.

Marking with ink or attaching any adhesive on the metal's surface dramatically reduced the force of cutting without the whole metal falling apart, leaving a clean cut in seconds. The quality of the machined surface also greatly improved.

Stickiness didn't initially stand out as a solution that permanent markers, glue sticks, and tape have in common.

"We looked at the chemical ingredients of the permanent ink, isolated each of those on the metal's surface, and there was no noticeable effect," said Anirudh Udupa, lead author on the study and a postdoctoral researcher in Purdue's School of Industrial Engineering. "So we realized that it's not a particular chemical but the ink itself sticking to the metal through a physical adsorption mechanism."

The Sharpie and adhesives also appeared to work on many gummy metals, regardless of the cutting tool.

"In hindsight, we can tell you why certain things weren't successful in previous work. It all comes back to the existence of this wiggly flow," said Koushik Viswanathan, Purdue postdoctoral researcher in industrial engineering. "Some people might have been trying to cut copper, for example, that was in the hard state rather than in the soft state."

To the researchers' knowledge, using permanent markers, glues, or tape to make gummy metals easier to machine does not pose any environmental hazards.

Next, Chandrasekar's group will be assessing the degree of stickiness that works best for cutting gummy metals and exploring ways to advance the application of this technology into industrial practice.

This research is supported by the U.S. Army Research Office, the National Science Foundation, and the U.S. Department of Energy.

Source: Purdue University

Published August 2018

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