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July 7, 2009
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The smoke from Independence Day fireworks has cleared, but some in
the materials industry believe business is just starting to heat up
again. Many of the materials suppliers, processors, and equipment
manufacturers we talked to at the recent plastics show, NPE 2009, felt
the market had hit bottom and were seeing signs of a recovery in the
works. Not surprisingly, leading the charge are compounders' new lines
of bioplastics, sustainably sourced materials, and recylclable
engineering-grade polymers, as well as recycling and waste-reduction
equipment.
In this month's newsletter, check out polymer developments in Machine
Design's sustainability department, ways to join
polymers for printed circuit board assemblies, and
the basics of testing rubber. Don't miss the
latest in new products, news from Machine
Design, and industry updates.
And please let us know what you think. Are manufacturing business in
general and, specificially, engineered materials companies, poised for a
turnaround? You can post your comments under articles at MachineDesign.com,
weigh in on our discussion forums, or send us an email.
Jessica Shapiro
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Three new flame-retardant
polycarbonate/acrylonitrile-butadienestyrene (PC/ABS) blend resins use
postconsumer recycled content and thus can help OEMs hit a higher rating
in the U.S. Government’s Electronic Product Environmental Assessment
Tool (EPEAT) for evaluating the sustainability of specific electronics.
It’s possible to get an additional one or two EPEAT points by
selecting these grades, says developer Bayer
MaterialScience.
Read the full article.
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Manufacturers of electronic components with printed-circuit boards
(PCBs) have a new method for mounting PCBs to their housings or
substrates: laser staking.
A material transparent to the laser beam is joined to a material which
absorbs the laser energy. The absorbed energy is transmitted as heat
through the absorbing material and melts both the absorber and the
transparent layer through conduction.
Read the full article.
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Finite-element analysis (FEA) is an indispensable tool for
predicting a product’s behavior in real-world situations and over
time. However, an FEA model is only as good as the material parameters
it’s based on. Getting good material data can be challenging enough
for linear-design purposes, but elastomeric materials complicate matters
with nonlinear and viscoelastic behavior. Nonlinearity arises from
rotations or translations large enough to be noticeable to the naked
eye, from part-to-part contact, and from the material’s nonlinear
response to loads or strains.
Read the full article.
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09-538/E8ZP4, 09-560/E9291, and 26-006/H8ZP1 are gasketing materials
for plate heat exchangers. 09-538/E8ZP4 is an ethylene propylene diene
M-class (EPDM) rubber that operates for over a year in hot water or
steam up to 347°F. 09-560/E9291 is an EPDM material formulated to
resist steam, formaldehyde, organic acids, and amines. 26-006/H8ZP1's
hydrogenated nitrile butadiene rubber (HNBR) formulation withstands
continuous temperatures up to 347°F and can operate in hot water and
steam environments.
Trelleborg Sealing Solutions Americas
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AerMet 340 is a precipitation hardenable (PH) martensitic alloy that
is heat treated and typically aged at about 900°F to develop the
desired properties. It has a hardness of Rockwell C 56, an ultimate
tensile strength of 345 ksi, and a yield strength of 300 ksi. The
alloy's fracture toughness is 34 ksi√in. It elongates 11% and to a
53% reduction in area. It is available in bar, hollow bar, sheet, wire,
billet, plate, and strip forms.
Carpenter
Technology
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Extreme thermoplastic olefins (TPOs) come in low gloss (LG), high
gloss (HG), and decorative (D) grades. The materials are tough, resist
surface crazing, cracking, and exposure to chemicals and UV radiation,
and can be painted or bonded using conventional primers and paints.
The TPOs are said to replace large fiberglass and metal parts and to
overcome thermoforming inconsistencies. They are 100% recyclable and are
produced without volatile organic compound (VOC) emissions.
Spartech Corp.
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Machine Design Video Spotlight
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CAE Flow Simulation
Software |
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Jim Lindauer from CD-Adapco discusses
fluid flow simulation software and modeling with Bob Repas from MACHINE
DESIGN |
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The Energy Efficiency Web Conference & Expo
Engineers saw and heard great educational content at the Energy
Efficiency Web Conference and Expo. If you missed the live virtual
event, don’t despair! An archive of the full day’s agenda is now
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Design engineers are required to integrate energy efficiency into their
designs while maintaining lower costs, the highest reliability or both.
The editors of Machine Design understand these challenges
and have developed this conference to help engineers understand the
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without having to travel or take time away from current projects.
Visit the archive to:
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additional pertinent energy efficiency information
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PSG Plastic Service Group, Ann Arbor, Mich., announced it will
continue to offer its seminar, titled “The Realities of Production
Aluminum Tooling for Injection Molding” into the fall months, as
demand warrants. The aluminum-tooling presentation follows 2008's
piece-part cost reduction sessions. The company also plans to introduce
a new seminar on filled materials and long glass fiber.
The seminars have served nearly 1,000 attendees from several dozen
companies to date. Topics such as aluminum tooling, thermography,
advanced specialty steel tooling alloys, and mold cooling techniques are
presented in an educational, non-commercial environment.
Future plans include offering events in audio, online-forum, and
live-webcast formats to make them accessible to those with limited
travel budgets. The company will also arrange seminars at a customer's
location, if needed. PSG is encouraging other companies to share their
relevant expertise with peers across the injection-molding industry.
For more information, contact Rich Oles at PSG at (269)
556-7051 or richo@psg-online.us.
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Solvay launches wear-resistant
PAIs
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Solvay Advanced Polymers, LLC, launched Torlon 4630 and Torlon 4645,
two polyamide-imide (PAI) grades that have better wear-resistance than
previous Torlon grades. The materials retain their mechanical properties
up to 275°C, have good creep resistance, and resist strong acids and
most organic compounds.
Torlon 4630 is filled with graphite and PTFE for use in non-lubricated
environments. Its limiting PV (contact pressure times velocity) is
150,000 psi x fpm. Torlon 4645 contains carbon fiber and PTFE and is
meant for lubricated applications. It has a PV value of 750,000 psi x
fpm, coefficients of friction between 0.05 and 0.1, and a 3 ppm/°F
coefficient of linear thermal expansion.
Both materials can be injection molded and are manufactured at the
company's Greenville, S.C. facility.
For more information, contact Solvay
Advanced Polymers, LLC.
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First Cut
New to the prototyping field or an expert, we’ve created a white paper
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Visit www.firstcut.com/prototypingprocesses
Protomold
"Designing for Moldability" is a quick-reference user guide for rapid
injection molding, great for engineers and designers of plastic parts.
Download this invaluable guide today!
Boker's Free 2009 Washer Catalog
Boker's 2009 Washer Catalog has over 23,000 non-standard sizes with
outside diameters of 0.080" to 5.140", numerous IDs and thicknesses and
2,000 material variations. ISO 9001:2000 Registered
www.bokers.com/mde
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Contact Information
Editorial questions: Jessica Shapiro
216-931-9850
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216-931-9893
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