tds cleanbraze final - norsk hydro · pdf fileenables fluxfree brazing in cab fur-naces...
Post on 06-Feb-2018
256 Views
Preview:
TRANSCRIPT
CleanBraze™
Background
Hydro Aluminium has developed an inno-vative material concept in order to enable fluxfree processes: CleanBraze™ ! CleanBraze™ – material receives a spe-cial surface treatment. The development was driven by ecological aspects, sub-stantial technological progress as well as supplying the highest level of safety for our customers. Thus, the material pro-vides excellent brazing results given a suitable match in design, brazing parame-ters and low oxygen levels.
Concept
The objective was to establish a fluxfree brazing process. Using suitable material and appropriate techniques an efficient brazing process can be maintained while eliminating flux. To successfully braze in a fluxfree process, all parameters need to match. Here, the material is just as essen-tial as a corresponding design and a sta-ble atmosphere. At any given time, how-ever, it is possible to react to varying technical conditions – such as a tempo-rarily bad atmosphere – and switch to optional employment of flux.
Above and beyond, CleanBraze™ – mate-rial can readily be brazed in a vacuum furnace. This is possible without Mg con-taining filler metals. After receiving Hy-dro`s CleanBraze™ treatment even standard fillers can be vacuum brazed.
Advantages
� No flux residues on brazed parts in-side & outside
� No flux overspray – Health, Safety & Environment
� Higher flexibility with regard to prod-uct design: Application of flux is not a limiting factor
� Products brazed in vacuum due to necessary cleanliness can be switched to CAB
� Enables fluxfree brazing in CAB fur-naces
� Enables vacuum brazing without Mg deposits
� Compatible with existing fluxes
Material
� CleanBraze™ process is independent of core material and temper
� CleanBraze™ treatment on Hydro HA 4045-D filler clad
� Standard production of the clad mate-rial – up to 2 clad layers per side
� Standard material thickness: 0.2 mm – 3 mm
Knowledge Transfer
CleanBraze™ is in full scale production. Customer tests show excellent brazing results if all process parameters are con-sidered. Hydro is happy to offer technical support in using CleanBraze™ – material. Feel free to take our advice in designing appropriate tests and their conductance. For further information on CleanBraze™, please contact:
Hydro Aluminium Rolled Products GmbH
Angle-on-Coupon Test: CleanBraze™ material in N 2 atmosphere Fillet Forming Test: CleanBraze™ vs.Standard vacuum Filler
Contact
Bernd Gerdautzki
Hydro Aluminium Rolled Products Aluminiumstrasse 21129 Hamburg Germany Phone +49 40 74011 747 Mobile +49 170 22 47 885 e-mail: bernd.gerdautzki@hydro.com
Standard
™
top related