September 10, 2019 Volume 15 Issue 34

Mechanical News & Products

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New polyamide 6 (PA6) compounds for metal replacement

New Creamid P Series polyamide 6 (PA 6) compounds from Teknor Apex absorb nearly one-third less water at saturation than standard grades, provide 15 to 25 percent improved tensile properties in the conditioned state, and exhibit higher flow and excellent surface characteristics, even in highly glass-filled formulations. The Creamid P series is the newest product family of higher performance specialty polyamide compounds for structural components in metal replacement applications. The compounds are based on advanced formulation technology that can be applied to lower the moisture uptake of a broad range of polyamide 6- and 6/66-based compounds. These include grades with various types and loadings of reinforcements or fillers, as well as impact-modified, toughened grades and other specialty compounds. These compounds can also employ an advanced heat-stabilization system that extends continuous-use temperature.
Learn more.

Liquid sealant can be applied in any geometric shape

DELO now offers a silicone-free liquid sealant that is fast curing and protects assemblies from dust, air, and water. DELO PHOTOBOND SL4165 is ideal for use in the automotive, electronics, and white goods industries. This new solvent-free, flow-resistant, highly viscous sealant can be applied in any geometric shape. DELO PHOTOBOND SL4165 cures by UV light or visible light in a matter of seconds without thermal influence, enabling the cured-in-place gasket (CIPG) process. This means that the sealant cures so quickly in the manufacturing process that it can be immediately assembled and compressed.
Learn more.

Mounting clamps for all needs

JW Winco has expanded its mounting clamps selection with new elements that ensure simpler, more optimal, and more flexible clamping of system-specific components. Since many users have utilized the twistable two-way mounting clamps GN 475 to arrange attachment rods in parallel, JW Winco was inspired to create the GN 474.1 mounting clamps with two parallel clamping holes. The new stainless steel retaining rods GN 480.3 and GN 480.5 also help make the system easier to use as their offset or angled shape eliminates the need to combine multiple straight elements. Other offerings include T-clamp, base plate, and simple swivel mounting clamps that can be assembled into a freely configurable articulated mounting solution using the clamping kit GN 511.1. A retaining magnet GN 51.6 can make mounting holes entirely obsolete.
Learn more. There are many more clamping options.

Overmolding vs. insert molding

Is there a difference between insert molding and overmolding? Some argue that insert molding is a completely different process from overmolding, while others say it is the same or similar. The molding specialists over at Aberdeen Technologies have posted a blog to set the record straight. Why? Because using the terminology improperly could cause confusion for your project. A very useful topic!
Read the blog.

Get a linear shafting sample on the house

Lee Linear has produced world-class, linear motion components and linear shafting for over 40 years. With the ability to manufacture custom shafting -- threading, diameter reduction, keyways, flats, plating, and more -- to required standards in a short amount of time, Lee Linear is able to fulfill orders on time, eliminating downtime and increasing profits for its customers.
Request your sample.

Stainless steel mounted bearings for food applications

KML Bearing USA has just introduced a superior, hygienic design of its Stainless-Steel Stand-Out Mounted Bearings that incorporates the company's Poly-Guard IP69K Sealing System. This new design provides food-processing equipment manufacturers with a cost-effective and sanitary bearing solution. These bearings meet the criteria for clean-in-place and eradicate bacteria-harboring sites by eliminating edge seams and crevices at the bearing mounting location. A stand-out mounting configuration eliminates the need for the fabrication and welding of clearance spacers, saving time and money.
Learn more.

Top Tech Tip: Seal it, protect it!

A Smalley Laminar Seal Retaining Ring is a metallic labyrinth seal consisting of multiple rings in a groove. To seal an assembly from contamination while withstanding high temperatures and corrosive environments, Laminar rings are produced from metal, not rubber, neoprene, or other non-metallic materials. The arrangement of the rings and the specific orientation of the rings are dictated by the application and the severity of the environment. Numerous configurations are available.
Learn more.

Redi-Rail -- a great alternative to profile rail!

Redi-Rail from PBC Linear is a great alternative to profile rail, where high speeds, precision, and moderate load applications are required. It offers strength, ease of installation, and corrosion resistance -- making it the perfect linear motion solution across a broad range of applications such as automation, machine transfer, and material handling. Aluminum rails are integrated with hardened steel races for a strong, yet lightweight design. Carriages are sealed against contamination and engineered with double-row bearing rollers that glide over particulates along the rail. Available in commercial-grade inch or in higher precision metric systems that are equipped with wipers and patented side pre-load adjustment.
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Standard air wipe dries, cools, cleans small diameters

EXAIR's new 3/8-in. Standard Air Wipe produces a 360-degree airstream that can blow off, dry, clean, or cool the material passing through it. The split design can be clamped around continuously moving material such as wire, cable, pipe, hose, and extruded shapes. It ejects a small amount of compressed air through a thin slotted nozzle that pulls in high volumes of surrounding room air. The airflow is uniformly ejected. Air velocity can be varied with a pressure regulator, and instant on/off control provides precision blowoff. Applications include wiping wire, drying inks, cooling hot extruded shapes, and blowoff of water, plating, coatings, and dust.
Learn more.

Low-outgassing epoxy adhesives

Epoxies, Etc. has published a new bulletin featuring its Low-Outgassing Epoxy Adhesives and Potting Compounds, which are sometimes required in aerospace, optical, and electro-optical applications. NASA has set the standard for testing when it comes to outgassing requirements. The two measurements that are used to screen materials are the Total Mass Loss (TML) and Collected Volatile Condensable Materials (CVCM) of the epoxy adhesive. Learn about six products from Epoxies, Etc. that are NASA Low-Outgassing Compliant.
Learn more.

5 most important factors to consider for hydraulic fittings

OEMs and fitting manufacturers are constantly finding new ways to stump us with different threads and new ways to seal them. Generally, however, when making hydraulic fitting connection choices today, there are several features to research and understand for your application. Kyri McDonough from the Hose Products Division at Parker Hannifin runs through the connections, attachment styles, and the five most important factors you need to consider for hydraulic fittings.
Read the Parker blog.

Comparison guide for plastic material performance

When you're choosing the best plastic material for your injection molding project, you have literally thousands of materials to choose from and lots of factors to consider, such as cost, strength, and temperature range. Wouldn't it be nice if there were a chart that compared the most common plastic materials? ICOMold has made one and put it in the shape of penguin, because they're clever and, well, it's fun. Their Plastic Performance Penguin is very useful too. Save this one for future reference.
Read the full article.

Cool Tools: METHOD X -- Real ABS 3D printing for the desktop

Powered by Stratasys, METHOD X from MakerBot is a new manufacturing workstation that can deliver exceptional dimensional accuracy and precision for complex, durable parts -- at a fraction of industrial 3D-printing costs. METHOD X can print real ABS that can withstand up to 15°C higher temperatures, is up to 26 percent more rigid, and up to 12 percent stronger than modified ABS formulations used on desktop 3D-printer competitors. Real ABS parts printed on METHOD X have no warping or cracking that typically occurs when printing modified ABS on desktop platforms without heated chambers. The price is pretty attractive too.
Learn more.

Formatter of advanced composites materials expands operations

Web Industries, a precision formatter of advanced composites materials for aerospace, space, and medical applications, is implementing a major expansion of its Denton, TX, manufacturing facility. The expansion will increase the plant's productive capacity, smooth the flow of manufacturing activities, and help support larger customer programs. The $1.5-million project will add 20,000 sq ft of manufacturing space to the facility, nearly doubling its size, and create new multi-layer insulation (MLI) and composite ply cutting production cells. The completed expansion will transform Web Denton into one of the company's Centers of Excellence, joining other Web manufacturing hubs such as Atlanta, GA, and Montpelier, VT.
Learn more about Web Industries' capabilities.

High-speed couplings handle 24,000 RPM

Miki Pulley has just introduced its SFM coupling line for direct sale to OEMs in North America. SFM couplings are designed for high-speed power transmission applications up to 24,000 rpm where high torque and precision alignment are critical, such as main spindle applications in machining centers and similar machinery, automation systems including assembly systems, and high-speed servo motor applications. Available in 10 sizes, SFM couplings transmit torque by connecting two shafts while damping system vibrations and accommodating misalignment. The couplings have a disk spring design that provides high torsional rigidity and axial flexibility. The high response, zero-backlash design features a high torque-to-weight ratio.
Learn more.

Researchers get NASA grant to scope out plasma-jet printing for in-space manufacturing

A team of researchers led by College of Engineering assistant professor Harish Subbaraman at Boise State University has been selected to receive a NASA Established Program to Stimulate Competitive Research (EPSCoR) three-year grant of more than $700,000. With this grant, the team will explore the challenges and opportunities of plasma-jet printing for NASA's emerging In-Space Manufacturing (ISM) program.

"The ability to manufacture custom or replacement sensors, components, circuits, and systems from materials and resources available in space will greatly reduce resupply mission costs," said Subbaraman. "ISM is expected to be an enabling capability for NASA's space and interplanetary exploration missions, such as the lunar mission and eventual human expeditions to Mars and other surfaces."

Harish Subbaraman (left), with Jim Browning, Ken Cornell, David Estrada, and Nirmala Kandadai, poses with a plasma printer in a Boise State lab. [Credit: photo Patrick Sweeney]



Currently, items that have to be resupplied during in-space missions are sent up as cargo shipments from Earth. However, as missions become more complex and often occur farther and farther from Earth, the need to be able to create necessary materials and components in space is growing. But how would it be possible to create such specialized items in space, in zero gravity?

Enter plasma-jet printing.

Often called the fourth element, plasma is an ionized gas with a wealth of potential uses. One example of an existing function for plasma-jet technology is wound treatment. Team member Ken Cornell, an associate professor of biochemistry, likens the process to using a tiny sand blaster to clear away microbial biofilms on wounds.

The impressive range of possibilities afforded by plasma-jet printing means the technology may also lend itself to purposes beyond manufacturing, such as in-space surface sterilization, decontamination, food treatment, and more. Boise State's research team intends to make the most of these opportunities in their design.

"It's about developing a truly multi-purpose additive printer for the International Space Station that will let astronauts manufacture equipment and replacement parts, sterilize scientific equipment, and clean food-preparation and other areas to reduce potential infection -- all without gravity. It reminds me of an old Saturday Night Live episode about a handy product -- it's a floor cleaner AND a dessert topping," said Karen Marker, a grant proposal strategist and writer in the College of Engineering.

The team is comprised of science investigator Subbaraman and co-investigators David Estrada, an associate professor in the Micron School of Materials Science and Engineering; Jim Browning, an associate professor and chair of the electrical and computer engineering department; Ken Cornell, an associate professor of biochemistry; and Nirmala Kandadai, an assistant professor in electrical and computer engineering. The project will be conducted in collaboration with Space Foundry and a group of researchers led by Meyya Meyyappan at the NASA Ames Research Center.

To make this incredible technology a reality, first the NASA EPSCoR grant will enable the team to begin tackling big questions and further develop existing technology to ascertain the feasibility of plasma-jet application in space.

Subbaraman sums up the team's goals in the following three points:

  1. "Gaining a robust understanding of the fundamental science behind the working mechanism of the plasma-jet system through modeling and systematic experiments and making refinements to optimize performance;
  2. Investigating its practical cross-cutting applications;
  3. Improving our understanding of the behavior of the technology in a multidirectional operating setting."

Source: Boise State University

Published September 2019

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