|
Products Groups:
● Gold Alloys
● Silver Alloys cadmium bearing
● Silver Alloys cadmium free
● Copper Alloys
● Soft Solder
● Nickel Alloys
● Zinc Alloys
● Special Powder Alloys
Brazepaste:
● Pure Copper Paste 100%
● Copper brazepaste
● Soft Solder paste
● Aluminium paste
● Silver brazepaste
|
Applications:
This is a
range of typical alloys applications
for our products:
● Refrigeration Engineering and
Air Conditioning Technology
● Automotive
● Heating elements for hot water systems
● Silver Ware
● Tool-Making Industrie
● Aerospace Applications
● Industrial Ceramics
● Food additive and Pigment
BRAZING TECHNIQUES
|
Furnace Brazing |
|
There are two main types of furnace brazing: |
| |
Vacuum
Brazing of which there are two types.
Firstly, those requiring 'exotic' filler
metals such as gold-nickel, gold-copper and
palladium bearing alloys. We supply several of
these high quality paste products. |
| |
The second
group consists of copper and nickel-based
alloys - high quality products used in higher
volumes. |
| |
Reducing Atmosphere Brazing is mainly
carried out with copper and copper alloys.
Some silver based alloys are used on more
sophisticated applications. |
|
LINBRAZE have a range
of binders, suitable for both vacuum and
reducing atmosphere furnaces. |
|
Brazing in Air |
|
When using a brazing paste in air, the paste
will contain a suitable flux. Turbo Braze
offer a comprehensive range of fluxes, which
are designed to meet the specific requirements
of the joining process. |
|
|
|
|
BRAZING IS:
Brazing is a lower temperature
process than welding, where intermetallics are formed to create a
bond, but still over 350 degrees C. The filler material typically
has a much lower melting point than the bonded surfaces. A typical
braze filler material is bronze. You may hear the word "braze"
when very high temperature solders such as gold-germanium are used
to bond feed-troughs into a hermetic
housing, its eutectic is 356 degrees C.
BRAZE-WELDING IS:
The basis for the braze welding
process is that both brass and bronze* will flow onto properly
prepared surfaces of higher-melting-point metals or alloys to form
a bond or molecular union which has excellent strength. The base
metal is never melted. It is merely raised to the temperature at
which the filler metal will tin – form a smooth film – on the
surface of the joint. Although the temperatures involved are much
lower than those required for the fusion welding of steel, braze
welding is primarily an oxy-acetylene process. The intense heat of
the oxy-acetylene flame quickly raises the base metal to the
proper temperature for tinning. The welder can control every
variable factor involved: the temperature of the base metal, the
melting of the filler rod, and the condition (neutral or slightly
oxidizing) of the flame.
|
 |
