Brazing Machines



Starting from the individual brazing task we offer innovative solutions in terms of production systems especially coordinated to the individual applications. .

Flame brazed sample pieces

Induction brazed sample pieces
Sample pieces flame brazing, induction brazing and gas-shielded brazing
Gas-shielded brazed sample pieces

Which brazing process is suited best for your component?



We gladly answer this question, when you:

  • describe your brazing task
  • send us samples of parts to be brazed 
  • give us information to the material of your workpieces

We look forward to your Anfrage für LötmaschinenInquiry!

Flame Brazing



Sample: Hard-soldering
Flame Brazing

Very many hard-soldering joints are executed via flame brazing (torch brazing). For this purpose different burning gas-oxygen-mixtures are applied. Widespread are propane-intake air and acetylene-oxygen. When flame brazing it is necessary for all basic material brazing combinations to use flux material. Only exception is phosphor containing copper brazing material with which copper-copper joints can be processed without the use of flux.

These machines are always especially designed for the individual requirements and are laid out as Löt-SchiebetischeSliding table-, Automatisches Löten auf RundtakttischenIndexing table-, or Automatisches Löten mit Transfer-LötanlagenTransfer brazing machine.

 

Induction Brazing



induction brazing
Induction brazing of hard metal

When induction brazing the necessary heat is generated by induction of components.

An inductor encloses the brazing area. Alternating current (primary cycle) flows through the inductor. Due to the changed magnet field current is generated in the components heating same (secondary cycle). By suitable shape of indicator it is possible to heat up only the area to be brazed.

The frequencies used are classified as middle frequency and high frequency. Low frequencies cause heating in deeper layers of components. High frequencies heat up mainly the surface.

Induction brazing is mostly applied with simple axial symmetric components, like shock absorbers and brake tubes.

Indicators Induction Brazing



  medium frequency - brazing high frequency- brazing
Frequency 1000 - 10 000 Hz 0,1 - 5 MHz
gap width 0,05 ... 0,25 mm (for small gap under shielded gas) 0,05 ... 0,25 mm (for small gap under shielded gas)
parts to be joined steel s = 5 ... 15 mm; copper s = 4 ... 12 mm steel s = 0,1 ... 3 mm; copper s = 0,3 ... 3 mm
basic materials St; Aluminium alloys; copper alloys high-alloyed steel; alloys with high melting point( i.e. tantalum, molybdenum); titanum-, copper- and nickel alloys
applications appliance industry; vehicle construction aerospace technology; precision engineering

Furnace Brazing / Gas-Shielded Brazing



Furnace brazing is a brazing process whereby the brazing parts with inlaid filler material are heated in a furnace.  In order to avoid oxidizing of cleaned brazing parts the air in the furnace is evacuated or the furnace is filled with shielded gas. Furnace brazing is favoured for the applications of hard brazing. The advantages of furnace brazing are the tension- and distortion-free brazing due to evenly heating of parts to be joined. It is possible to produce arbitrarily many brazing spots in only one brazing cycle without the use of flux material. A simultaneous heat treatment of basic materials in one operating cycle is also possible.

These furnaces are either appliances processing complete batches like the chamber furnace or toploader  or continuously operating furnaces with conveyor belt. 

Indicators for Furnace Brazing



Gas-shielded brazing vacuum brazing
gap width 0,1 ... 0,2 mm
joining parts sheet s = 1 ... 10 mm bulk of parts to be joined ≤ 2 ... 3 kg
basic materials St; Aluminium alloys; copper alloys
application appliance industry; vehicle construction