November 07, 2017 Volume 13 Issue 41

Mechanical News & Products

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SKF launches re-engineered mounted ball bearing units

SKF has launched a newly re-engineered product line of mounted ball bearing units with industry-standard inch series cast iron housings in several designs, high-performance SKF inch or metric insert bearings, and several shaft-locking methods. These mounted bearing units will suit a wide range of light- and medium-duty industrial applications, including conveyor systems, fans and air-handling equipment, and similar machinery across industries.
Click here to learn more.

Extremely fine stainless steel MicroEtch screens

Fine stainless steel MicroEtch Screens are manufactured by Tech-Etch using photo etching technology enabling hole sizes from .003 in. and up. Photo etching enables designers to specify a straight hole or a tapered hole, which facilitates liquid filtration and back-flow cleaning. Unlike stamping, photo etching yields a burr-free product resulting in cleaner, more efficient screens with greater material integrity. MicroEtch screens feature a tighter tolerance on hole sizes and greater dimensional stability than woven wire mesh, making them ideal in applications requiring frequent cleaning or in devices where there is mechanical contact.
Click here to learn more.

Mike Likes: C-Solder joins carbon materials

Wow, you can probably file this under, “I really haven’t heard of that before!” Materials specialist Goodfellow has just released a new tin-based, flux-free soldering alloy called C-Solder that enables the joining of carbon materials in both carbon-carbon and carbon-metal combinations. Using a classic soldering iron, heat gun, or torch, the resulting bond is both mechanically strong and electrically conductive. But what can you do with it? With C-Solder you can join carbon materials, including carbon fibers or carbon nanotube fibers in carbon-carbon arrangements; carbon to metals (e.g., copper aluminum, titanium, stainless steel), ceramics, and glass materials; and aluminum to aluminum without using flux. This lead-free product has excellent flow, does not leave a residue, and is not flammable.
Learn more about this truly unique product.

Totally New: Smallest wave springs on the market

Smalley has expanded the Crest-to-Crest® Wave Spring Series. Smalley's popular C (imperial) and CM (metric) Series have been expanded; standard sizes are now available from stock down to .188 in. and 5 mm in diameter. Smalley Wave Springs can replace conventional coil springs while occupying only half the space and providing the same force and deflection. Request complimentary samples today!
Click here to learn more.

Fasteners: Self-clinching free-running locknuts with modified threads

New PEM S-RT self-clinching free-running locknuts from Penn-Engineering feature a modified thread angle enabling easier tightening of mating screws and superior vibration-resistant locking performance in thin metal assemblies. The modified thread formation allows mating screws to spin freely during the attachment process until clamp load is induced during the screw-tightening process. The applied clamp load then engages the locknut’s vibration-resistant locking feature, which securely and reliably locks the screw in place. Compared with traditional locknuts, excellent joint clamp load remains consistent, even after many on/off cycles.
Click here to learn more.

High-deflection isolation mounts for diesel engines and low-frequency applications

Tech Products Corporation, a leader in vibration and shock isolation solutions, has released its latest line of fail-safe vibration mounts called the Bell Mount Series. This line of vibration isolators includes global industry standard sizes of common diesel engine mounts. Typical applications include generator sets, compressors, pumps, off-highway, and construction equipment. Zinc-plated steel protects the high-strength natural rubber from fuel, oil, and weather. The rugged design incorporates interlocking metal components that make these some of the most durable mounts on the market.
Click here to learn more.

DIY graphene: Graphene oxide available in 3 forms

Goodfellow has announced the availability of graphene oxide for use in a wide range of applications. The chemical reduction of graphene oxide is the most suitable method of mass production of graphene. Graphene oxide is easily dispersed in water, other organic solvents, and different matrices; can be embedded in different ceramic or polymeric matrices to improve electrical, thermal, and mechanical properties; and is adaptable for many applications through functionalization. Goodfellow offers this versatile product dispersed in water, reduced, or in a film.
Click here to learn more.

3D-printing materials program for large manufacturers

Carbon, a Silicon Valley-based 3D manufacturing company, has announced a materials program that will offer some of its 3D-printing polymer resins via bulk packaging, enabling a 40 percent price reduction for high-volume manufacturers. The first material to be offered will be RPU (rigid polyurethane) 70, which Carbon will initially sell for $150/liter, down from $250/liter. Working with its network of global supply-chain partners and integrating novel approaches for dispensing and distributing resins to a fleet of printers, Carbon expects to further reduce the price to less than $100/liter over the next year. Ford and adidas are among the first companies to take advantage of these new production offerings.
Click here to learn more.

Sciaky 3D metal printing wins aerospace award

Metal additive manufacturing solutions provider Sciaky has won the TCT Aerospace Application Award, along with Lockheed Martin, for the successful production of titanium propellant tanks using Sciaky’s industry-leading Electron Beam Additive Manufacturing (EBAM®) technology. The TCT Awards celebrate the innovators, technology, and collaborators behind the best examples of 3D technology use across the globe. For this particular application, Lockheed Martin Space Systems reduced costs by 55%, material waste by 75%, and production time by 80% using Sciaky’s EBAM metal 3D-printing solution over traditional forging methods. The EBAM system excels at producing large-scale, high-value metal parts.
Learn more about the Sciaky EBAM process.

Completely updated new full-line catalog of fasteners

Micro Plastics introduces its new 300-page catalog #41 containing thousands of fastening solutions for engineers and product designers. Find hundreds of new problem-solving products, including Spacers, Washers, Clips, Clamps, Ties, Bushings, Screws, Nuts, Rivets, and Plugs. Micro Plastics specializes in Nylon threaded fasteners, but the company also offers extensive product lines for wire management and circuit board hardware. FREE samples are available upon request.
Check out the new online catalog.

Great Resources: Urethane casting tips and tricks

Xometry's team of engineering experts has created a no-cost design guide to help you optimize your urethane casting designs. Urethane casting creates rigid or flexible end-use parts that are highly durable. This process is optimal for low- to mid-volume production runs, and little to no finishing is required because desired textures and finishes are applied to the master pattern. This design guide focuses on how to save time and money on your next casting project.
Get the urethane casting design guide.

Smalley’s New Medical Capacity

Medical devices are shrinking, and the need for smaller medical rings and medical springs has grown. Smalley continues to push the boundaries of coiling technology, producing the smallest wave springs and retaining rings on the market. As the preferred supplier to the medical industry, Smalley’s Spirolox® Retaining Rings and Wave Springs are found in medical devices from surgical instruments to implantables, imaging equipment to dental tools, and more. From prototypes to production volumes, Smalley is able to scale production to meet your manufacturing schedule. Medical-grade alloys including surgical 316 Stainless Steel, Elgiloy, and implantable Titanium are readily available. Smalley strives to provide the best engineered products, quality, service, and deliverability. Their dedication to the medical industry is evident by their certification to ISO 13485:2016.
Click here to learn more.

Great Resources: Design guidelines for selecting/using stainless steels

This extensive guide from the Nickel Institute helps designers better understand the large family of corrosion-resistant stainless steels. It describes typical corrosion modes and how to select materials to minimize or prevent corrosion. Forty-seven figures help illustrate important characteristics of, and end-use applications for, 57 different stainless steel types, including chemical compositions, physical and mechanical properties, properties at elevated temperatures, and heat-transfer characteristics.
Get your guide (no registration required).

Compressed Air: New website offers better ways to improve efficiency and safety® is the new digital home of Intelligent Compressed Air® products for industry. EXAIR’s new website has improved the product selection process by providing descriptions immediately from the homepage. An improved account management and ordering process streamlines access to historical orders, allows one-click repeat orders, and eases editing of your information. This website is fully responsive to provide a consistent experience whether using a PC, tablet, or smartphone. A comprehensive search functionality enables users to quickly locate model numbers and related information.
Click here to check out EXAIR's new site.

SOLIDWORKS 2018 is here!

With SOLIDWORKS 2018, teams can collaborate concurrently to design a product or part more rapidly and cost efficiently, validate its function and manufacturability, manage its data and related processes, streamline and automate its manufacturing, and inspect it. Any changes in design or manufacturing are fast and easy to manage and automatically flow to all related models, programs, drawings, and documentation. A standout new feature is SOLIDWORKS CAM, which provides rules-based machining with knowledge capture for the automation of manufacturing programming. Plus, there are improvements to many of the SOLIDWORKS features you already use.
Learn all about the SOLIDWORKS 2018 launch.

Forget those stitches and staples: Newly developed 'squirtable' elastic glue seals wounds in 60 seconds

Biomedical engineers from the University of Sydney in Australia and a number of universities in the United States have collaborated on the development of a potentially life-saving surgical glue called MeTro.

MeTro's high elasticity makes it ideal for sealing wounds in body tissues that continually expand and relax -- such as lungs, hearts, and arteries -- that are otherwise at risk of re-opening.

The MeTro biomedical glue is squirted directly onto the wound and activated with light.



The material also works on internal wounds that are often in hard-to-reach areas and have typically required staples or sutures due to surrounding body fluid, hampering the effectiveness of other sealants.

MeTro sets in just 60 seconds once treated with UV light, and the technology has a built-in degrading enzyme that can be modified to determine how long the sealant lasts -- from hours to months, in order to allow adequate time for the wound to heal.

The liquid or gel-like material has quickly and successfully sealed incisions in the arteries and lungs of rodents and the lungs of pigs, without the need for sutures and staples.

The results were published Oct. 5 in Science Translational Medicine, in a paper by the University of Sydney's Charles Perkins Center and Faculty of Science; Boston's Northeastern University, the Wyss Institute for Biologically Inspired Engineering at Harvard University, and the Beth Israel Deaconess Medical Center (BIDMC) in Boston.

MeTro combines the natural elastic protein technologies (developed in collaboration with author and University of Sydney McCaughey Chair in Biochemistry Professor Anthony Weiss) with light-sensitive molecules (developed in collaboration with author and Director of the Biomaterials Innovation Research Center at Harvard Medical School Professor Ali Khademhosseini). Elastin is the protein that gives blood vessels and skin their strength and flexibility.

Lead author of the study, Assistant Professor Nasim Annabi from the Department of Chemical Engineering at Northeastern University, oversaw the application of MeTro in a variety of clinical settings and conditions.

"The beauty of the MeTro formulation is that, as soon as it comes in contact with tissue surfaces, it solidifies into a gel-like phase without running away," said Annabi. "We then further stabilize it by curing it on-site with a short light-mediated crosslinking treatment. This allows the sealant to be very accurately placed and to tightly bond and interlock with structures on the tissue surface."

The University of Sydney's Professor Anthony Weiss described the process as resembling that of silicone sealants used around bathroom and kitchen tiles. "When you watch MeTro, you can see it act like a liquid, filling the gaps and conforming to the shape of the wound," he said. "It responds well biologically and interfaces closely with human tissue to promote healing. The gel is easily stored and can be squirted directly onto a wound or cavity."

VIDEO: Watch Professor Anthony Weiss demonstrate how the MeTro elastic surgical sealant works and potential applications.

The potential applications are powerful -- from treating serious internal wounds at emergency sites such as following car accidents and in war zones, as well as improving hospital surgeries, said Weiss.

Professor Khademhosseini from Harvard Medical School was optimistic about the study's findings.

"MeTro seems to remain stable over the period that wounds need to heal in demanding mechanical conditions, and later it degrades without any signs of toxicity; it checks off all the boxes of a highly versatile and efficient surgical sealant with potential also beyond pulmonary and vascular suture and stapleless applications," he said.

The next stage for the technology is clinical testing, Professor Weiss said.

"We have shown MeTro works in a range of different settings and solves problems other available sealants can't. We're now ready to transfer our research into testing on people. I hope MeTro will soon be used in the clinic, saving human lives."

A company called Elastagen Pty Ltd is commercializing the technology.

Source: University of Sydney

Published November 2017

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