Types of ovens we offer:
• Controlled atmosphere
Atmosphere refers to pure vs. normal air conditions and consists
of the following elements: hydrogen, argon, nitrogen and blends
in excess of 2000 degrees F. Our Exothermic ovens operate
on a continuous belt furnace. Computer controlled digital
temperature controllers provide a constant temperature during
the manufacturing process and ensure a more specific or defined
end product. High purity and profiling capabilities allow
us to exceed our customers' expectations in a way our competitors
can't.
Inside machining, fixturing, and CAD design for rapid prototyping
are provide by in house manufacturing and design engineers.
In addition, designs are evaluated in terms of their quality
by conducting a stress analysis, often referred to as a finite
element analysis (FEA).
Further testing is accomplished via thermal imaging techniques.
Potential electrical weak points are detected as heat rise
areas are identified by undergoing a thermal analysis. Dilatometers
are used to detect thermal expansion contraction activity
within the glass. Likewise, a scanning electronic microscope
(SEM) is used to perform precision micro analysis on a scale
of 10. Finally, a semi-quantitative chemical analysis can
be completed, often referred to as an EDAX test.
Fusite is one of a select few glass-to-metal sealers
able to formulate custom glasses. Smelting is the process
of taking raw materials to a high temperature to form glass.
For over 50 years, Fusite has pioneered in formulating technical
glasses for glass-to-metal sealing. With thorough knowledge
of glass engineering and chemistry, Fusite continues to exceed
today's stringent material demands for sealing, adhesion and
corrosion resistance. Fusite offers a full range of glasses
covering thermal expansions for most compression and matched
seal applications. From converting the frit to free flowing
granules for dry pressing, Fusite has acquired proven processing
and spray drying equipment.
Combined with extensive technical skills and a fully-capable
research lab, these extensive melting capabilities allow Fusite
to provide custom glass formulations for the customers' most
challenging applications.
Standard glasses produced are:
• Compression Glass – Fusite T
• Matched Glass – Fusite K
• Battery Glass – Fusite 435
Other glasses processed:
• Traditional or custom glasses (9013, etc.)
• Soda-lime (windows) for sight glass
Fusite does not specialize, however, in bora silicate chemicals
or optical grade glass.
Fusite produces bimetallic wires of various materials and
sizes primarily for applications where high electrical conductivity
is required. Today more and more design engineers are substituting
Fusite’s copper core wire for solid wire because of Fusite’s
proven hermetic metallurgical bond and its compatibility with
many sealing glasses. The copper core permits a conductor
of smaller diameter than solid wire to be used for a given
power requirement. In addition, it maintains excellent mechanical
strength and ductility. Various alloys and copper core ratios
are available with electrical resistivity (@68°F) ranging
from 42-76 ohms-cir. mil./ft.). Diameters as small as .010"
to over .500" are produced on a regular basis. Typical wire
or pin materials used in sealing applications are:
• Copper core
• 400 series stainless steel
• Alloy 52 steel
• 300 series stainless steel
• Molybdenum
Various materials are used for conductivity and are application
specific. Common pins configurations consists of:
• Straight
• Hooks
• Headed pins
• Bends
• Pierced holes
Housings are commonly made of the following:
• Stainless steel
• Cold rolled steel
• Kovar
• Molybdenum
Fusite has in-house plating operations. Process capabilities
include electroless and electrolytic (for nickel only) methods.
Types of plating available are:
• Gold
• Nickel
• Tin
• Tin/lead
• Copper
• Zinc dichromate
• Zinc nickel (high salt spray resistant)
Fusite performs different types of soldering such as tin and
tin/lead.
• Resistance welding
• MIG welding
• TIG welding
• Laser welding Insulation:
• Ceramic
• Rubber
• Epoxy
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