Flux Powders for aluminium brazing

NOCOLOK-Flux-Green-Filler-Stop
NOCOLOK® Flux

A high quality fluxing agent for brazing aluminium components.

NOCOLOK® flux is non-hygroscopic and only very slightly soluble in water (0.2 % to 0.4 %). The shelf and pot life of the flux is therefore indefinite. 

The flux does not react with aluminium at room temperature or at brazing temperature and only becomes reactive when molten (at least partially molten). The flux leaves a mainly water insoluble residue which need not be removed.

Application

  • Brazing agent - as combined brazing and fluxing agent for brazing of aluminium.
NOCOLOK® Flux Drystatic

Flux using electrostatic/dry powder coating

NOCOLOK® Flux Drystatic is used to coat aluminium components with flux by utilizing electrostatic attraction to 'dry' flux the surface ready for brazing. It is used extensively in the automotive industry in specialized Controlled Atmosphere Brazing (CAB) furnaces.

Application

  • Brazing agent - as combined brazing and fluxing agent for brazing of aluminium (Electrostatic/Dry powder application)
NOCOLOK® Sil Flux (fine grade)

A reactive flux for the brazing of aluminium and filler alloy generating flux for brazing aluminium.

Brazing agent

  • Filler alloy generating flux for brazing aluminium
  • Particularly suitable for brazing aluminium without additional filler metal
NOCOLOK® Sil Flux (extra fine grade)

Reactive flux for the brazing of aluminium and filler alloy generating flux for brazing aluminium.

Brazing agent 

  • Filler alloy generating flux for brazing aluminium
  • Particularly suitable for brazing aluminium without additional filler metal
NOCOLOK® Cs Flux

NOCOLOK® Cs Flux is a flux for brazing magnesium aluminium alloys.

Brazing agent

  • Flux for brazing aluminium
  • Specifically for brazing magnesium-containing aluminium alloys (i.e., AA 6063)
NOCOLOK® Zn Flux

A reactive flux alternative to arc spray Zn coating

Brazing agent

  • “Reactive” flux for brazing aluminium
  • During brazing, potassium fluoroaluminates (flux) are generated by the brazing agent in contact with Al/Si filler metal. In addition, zinc is produced and diffuses into the aluminium surface
  • Formation of a zinc-rich diffusion on layer (corrosion protection)
NOCOLOK® Li Flux

A flux for aluminium brazing with further reduced residue solubility and improved corrosion characteristics

NOCOLOK® Li Flux shows the same outstanding properties and brazing performance of standard potassium fluoroaluminate flux – with further enhancement of the post braze flux residue characteristics.

Brazing agent 

  • Flux for brazing aluminium
  • Reduced solubility of post-braze flux residues
  • Uniform structures of post-braze flux residues 
NOCOLOK® Li Flux Drystatic

A flux for aluminium brazing with further reduced residue solubility

NOCOLOK® Li Flux Drystatic is a flux for aluminium brazing with further reduced residue solubility and improved corrosion characteristics and using electrostatic/dry powder coating.

Brazing agent

  • Flux for brazing aluminium
  • Reduced solubility of post-braze flux residues
  • Uniform structures of post-braze flux residues
Cesium Fluoroaluminates (CsAlF-Complex)

A low-melting-point flux for brazing aluminium

Application

  • Flux for joining aluminium to aluminium by flame and induction brazing
  • For joining aluminium to copper/ brass by flame and induction brazing
  • Suitable for flame brazing of aluminium alloys (incl. higher magnesium containing alloys - e.g., AA6063) with Zn/Al filler alloys
Cesium Tetrafluoroaluminate (CsAlF4)

Flux for brazing aluminium

Cesium Tetrafluoroaluminate (CsAlF4) is particularly suitable for flame brazing of magnesium-containing aluminium alloys.

Application

  • Additive for NOCOLOK® Flux slurries for improving the compatibility with higher-magnesium containing aluminium alloys in controlled atmosphere brazing (CAB)
  • Additive for NOCOLOK® Flux slurries for slightly lowering the melting range in CAB
  • Flux for joining aluminium to aluminium by flame and induction brazing (but not suitable for joining of aluminium to copper)
  • Suitable for flame brazing of aluminium alloys (incl. higher-magnesium containing alloys – e.g., AA6063) with Zn/Al filler alloys