Two-part adhesives will bond for new
uses
The toughened epoxy line of 3M™Scotch-Weld™Adhesives
boasts four new additions of the high-shear and -peel strength combinations, for
bonding many types of metal, plastic, rubber, and glass. DP-420 Black provides
color matching or increased visibility during use, along with controlled flow
and a 20-minute worklife. DP-460 Off-white offers these strengths along with a
60-minute worklife. DP-460 Non-sag can be applied to vertical surfaces without
running, has a 60-minute worklife, and achieves handling strength after 4-6
hours at room temperature (it cures immediately at high temperatures). And for
repositioning of large parts, DP-4XL offers 5-6 hours of worklife, gaining
handling strength after 24 hours at room temperature (it also cures immediately
at high temperature).
Welding
electrode is designed for long life
The newest addition to American Torch Tip Co.'s Long Lasting®electrodes is the Blue Mark™, a high-endurance part that can produce 50 more pierces than comparable parts. The secret of the new design is a set of "cooling flutes" which allow air to travel to the head of the electrode, cooling the tip and eliminating the moisture build-up and internal arcing that shorten electrode life. It is designed as a replacement for welding systems using the Max 100®.
American Torch Tip Co.
Weld-bonding
passes the test
A new Fusor metal-bonding adhesive recently passed a rear
impact crash test that measures fuel-tank integrity under Federal Motor Vehicle
Safety Standard 301. Called Fusor 108B/109B (Bondline Control), the adhesive was
applied to the quarter panel of a 1991 Mercury Sable in a weld-bonding procedure
that combines a structural adhesive with resistance spot welding. The adhesive
formulation includes glass-beads to create a uniform bondline thickness
independent of clamping techniques, notes Jim Perritt, Lord Corp.'s manager for
the auto-and-truck repair market. According to a report from MGA Research Corp.
(Burlington, WI), the firm that conducted the crash test, the weld-bonded
quarter panel allowed no fuel leakage, bond failures, or panel separation during
the crash tests. "The procedure proves to be an effective alternative to MIG
welding," the report states. What's more, the test marks the first time a
structural adhesive has met DaimlerChysler's weld-bonding specifications,
Perritt adds.
Plasma torch
slices through steel
New from Hypertherm Inc. is the HySpeed HT4400 plasma
cutting system, designed to slice through 1/2-inch mild steel at 160 ipm (inches
per minute), or cut 1-inch steel at 65 ipm. This 400-A dry oxygen plasma cutting
system has a single-source power supply.
More gaskets on
demand
To address a wider variety of automotive applications,
four new materials have been added to the FastGasket line of cured-in-place
silicone gaskets. "Now we can seal just about everything," says Loctite's Dave
Carbone, citing headlamps, trunk locks, oil pans, circuit boards and electric
motors, and engine components as just a few examples. The new materials were
introduced at the recent Society of Automotive Engineers Congress in Detroit.
FastGasket 5963 is a gray, one- component material with high fluid and heat
resistance for sealing tansaxle pans, valve covers, waterpumps, radiators, and
other powertrain components. FastGasket 5964, a brown, one-component material,
has a low durometer and high elongation for use in anti-lock brake modules,
timing belt covers, and connectors. FastGasket 5965, is a black, one-component,
water-resistant foam that doubles in size during the microwave cure. It's
intended to fill large gaps and provide dampening in plastic housings-such as
HVAC ductwork-and in electronic components.FastGasket 5966-a red, two-component
system-brings fuel-resistant capabilities to applications such as cam covers,
fuel injectors, intake manifolds, fuel lines and other aromatic fuel
environments.
PC board
assembly conveyor belt
For assembling and handling personal computer boards,
Crown Simplimatic makes the CIMTRAK Edge Belt Conveyor. The device is designed
for double-sided board assembly, featuring reliable stepper motors instead of dc
motors and through-shafts. And its zero-clearance design provides added safety,
preventing thin PCMCIA boards from getting jammed during processing.
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