Furse Weld - Furse Earthing and Lightning
Protection and Electronic Systems Protection by Thomas & Betts
The FurseWELD Process
FurseWELD
exothermic welding is a cost efficient method of making large or
small numbers of high quality electrical connections. It is a
simple, self-contained system that uses the high temperature
reaction of powdered copper oxide and aluminium, within a mould,
to form permanent electrical connections.
Typical applications
include:
- Earthing for
power plants and sub-stations
-
Telecommunications
- Transmission
and power distribution lines
- Cathodic
protection
- Rail
connections
The FurseWELD System
- requires no
external power or heat source
- creates high
quality electrical connections
- is
completely portable
- can be used
safely with minimum training
- is cost
effective
- can be used
for over 45 standard connection configurations
The FurseWELD Connection
FurseWELD
connections have several advantages:
- tolerant to
repeated fault currents
- highly
conductive
- do not
loosen
- excellent
corrosion resistance
Most FurseWELD
connections have at least twice the cross-sectional area of the
conductors being joined, and an equivalent or greater current
carrying capacity. Corrosion resistance is exceptional because
of the very high copper content (>90%) of the alloy.
FurseWELD Moulds &
Joints
Making a FurseWELD
joint is a simple procedure as illustrated below:
1
Locate the conductors (A)
to be joined in the weld
cavity (B) and close
the mould (C).
2
Locate the steel retaining disc in
the base of the crucible (D). Pour
in the weld powder (E) followed
by the starting powder (F).
Ignite starting powder
with a spark gun.
3
The resulting exothermic reaction
reduces the weld powder to molten
copper alloy which melts the
retaining disc and flows into
the weld cavity where it partially
melts the conductors (G).
4
The molten copper alloy cools
to leave a fusion weld of great
mechanical and electrical integrity.
FurseWELD Moulds
The FurseWELD
system of exothermic welding uses moulds to contain the
exothermic reaction that creates safe and robust connections.
Different types of moulds are available, whose use depends on
the requirements of the project.
Graphite Moulds
Market leading
FurseWELD graphite moulds are extremely robust and capable of
producing over 75 connections each.
Mini-Moulds
FurseWELD
mini-moulds are a cost effective alternative to full-sized
moulds, especially where lower numbers of connections are
required. They are smaller overall, less robust and therefore
lower priced. Care is required in order to achieve similar
service lives to full-sized moulds.
SureSHOT
The FurseWELD
SureSHOT system is a single-use ceramic mould supplied complete
with retaining disc and powders. It has been designed for use in
applications where only a few connections are required.
Connection Selector
CLICK HERE - to
select connection
Product Selector -
How to Use
Use the
‘Connection Selector’
CLICK HERE
to choose your required joint type. Conductors must be in the
orientation shown to achieve the correct connection.
Furse offers
technical support to assist with selection of joint type. If
connections shown do not meet your requirements, please contact
the sales office on +44 (0)151 547 2666.
FurseWELD
products
A powder
cartridge is
required for each joint to
be made
Less robust, more
cost effective
versions of the mould and
handle clamp are available
A single mould is capable
of producing on average
75 joints
Sleeves are required when
joining conductors smaller
than 16mm2
Handle clamps for handling
the mould, or clamping the
halves together
Packing is required when
welding to reinforcing bar
Accessories
Hammer die
Railbond
Stud
Conductors
Flat tape
Stranded conductor
Solid circular conductor
CLICK HERE
to download FurseWELD Product Selector datasheet
SureShot
The FurseWELD
SureSHOT system is a cost effective solution for applications
requiring only a small number of high quality electrical
connections. Like all
FurseWELD products, SureSHOT uses the high temperature reaction
between powdered copper oxide and aluminium to create fault
tolerant electrical connections without any external power or
heat source.
SureSHOT
connections have the same benefits as FurseWELD connections:
- tolerant to
repeated fault currents
- highly
conductive
- do not
loosen
- excellent
corrosion resistance
Unlike the
graphite FurseWELD moulds, the SureSHOT moulds are ceramic and
specifically designed to be used only once. They are disposed of
or buried in place with the joint once it has been completed.
SureSHOT moulds are supplied complete with powders and retaining
disc.
SS1
SS2
CLICK HERE
to download FurseWELD SureSHOT datasheet
Terminal Lugs
Straight type
lug
Cranked
type lug
Offset type
lug
Handle Clamps &
Accessories
A selection of handle clamps and frames are available to suit
all types of Furse moulds.
Accessories
Accessories include; Cable, Mould and Tape Cleaning Brushes,
Duxseal Sealing Compound, Flint Gun and Flints, Hammer Dies,
Mould Jackets, Packing, Rail bonds, Rail Head, Web and Foot
Scraper, Mould Scraper, Copper Sleeves, Welding Toolbox and
Toolkits.
CLICK HERE to download FurseWELD Handle Clamps &
Accessories datasheet |