The SafraBraze range of CuSi-3 MIG brazing wires has already been established in the UK for over 10 years with some of the leading automotive manufacturers. The consistent quality of this product has now become widely respected in the industry, being manufactured in Germany to EN 10204 (DIN 50049). Available not only in 5kg and 15kg spools, but also in 200kg bulk pack variety for unbeatable wire feeding on robotic applications.
Buying quantities? Call us free for a quote on 0800 975 9710. Due to volume sold of this quality product we have the best prices in the UK.
Questions and answers;
Q - Why is Manganese boron steel used so heavily in the automotive industry today?
A - In the automotive industry the need
to save weight, while at the same
time meeting increasingly severe
crash test standards, has led to the
use of high strength steels that
conserve good ductility and
formability.
The high yield strength makes this
material particularly suited for ant intrusion
functions i.e. fender
beams, door reinforcements, middle
posts etc.
This sheet steel is pre-aluminised to
protect the metal from oxidation and
decarburisation, during heat
treatment; this also enhances the
corrosion resistance after painting,
avoiding the need for any
subsequent corrosion protection
treatment.
Q - What are the benefits of MIG brazing or MIG Soldering these Boron steels?
A - Zinc, in the galvanised coating,
melts at temperatures of around 420
C and vaporises at 906 C. This
causes unfavourable effects on the
welding process as unalloyed SG2
MIG welding wire melts around
1450 C. The zinc starts to vaporise
as soon as the arc
is struck; zinc vapours and oxides
can lead to pores and inadequate
fusion.
Zinc, in the galvanised coating,
melts at temperatures of around 420
C and vaporises at 906 C. This
causes unfavourable effects on the
welding process as unalloyed SG2
MIG welding wire melts around
1450 C. The zinc starts to vaporise
as soon as the arc
is struck; zinc vapours and oxides
can lead to pores and inadequate
fusion.
An alternative is to use the MIG Brazing
process, some industries call this MIG Soldering, this is done using a copper silicon alloy
MIG brazing wire - Safrabraze CUSi-3. This
has a relatively low melting point
approx 980 C.
The reduced heat input results in the
following advantages:
- low coating burn off
- no corrosion to the joint seam
- low distortion
- dissimilar joints (any combination
of material, except aluminium)
- easy after joint machining
- fast deposition saving labour costs
- minimal spatter
Since there is no fusion of the base
metal, it therefore has more in
common with a brazed joint than a
welded one.
Did you know this product can now be used for TIG Brazing with the new Masterweld Autofeed AWT300? This new brazing process is taking the market by storm, has numerous benefits over MIG brazing. Want to find out more? Call our technical helpline on 0800 975 9710.