The NOCOLOK® flux brazing technology is the industry standard for brazing aluminium heat exchangers and other components

NOCOLOK-Key-Visual-Logo-Innovative-Fluxes

We are the global market leader for non-corrosive fluxes used in aluminium brazing technologies: we sell NOCOLOK® brand products supported by a full spectrum of aluminium brazing supplies and services plus specialized know-how. The world of NOCOLOK® is the world of aluminium brazing. 

Our customers enjoy many genuine advantages: NOCOLOK® users enjoy not only a broad product range but also broad technical advice and competent after-sales service. All technical issues are quickly and dependably answered. 

You can also be sure of this: all products are based on the very latest research. Aluminium brazing is used in the automotive industry, in the production of air-conditioning systems, refrigerating systems, domestic and electrical appliances.

Features & benefits

  • Improved Heat Transfer performance
  • Pressure Drop Reduction
  • Refrigerant Charge Reduction
  • Reliability in Performance
  • Recycling Advantages
  • Noise Reduction
  • Lower Weight

NOCOLOK Pastes & Coatings for flux applications

NOCOLOK-Flux-Paste
NOCOLOK® Flux Paste

A flux paste specifically formulated for application where traditional water based fluxing is not suitable

NOCOLOK® Flux Paste is a flux paste specifically formulated for providing a viscous homogeneous mixture of NOCOLOK® Flux (15 – 50%) in an organic carrier for brazing aluminium cladded interfaces where traditional water based fluxing is not suitable.

Typical applications include but not limited to: interior tube seams (B-tubes), snap over joints (clinch tubes), tube-to-header joints, internal turbulators.

The paste can be dispensed manually by brush or syringe or with automatic dispensing equipment. The paste can be used in both furnace and flame braze process.

CsAIF4 can be added to accommodate materials with Mg of up to approximately 0.5 % in furnace brazing. This refers to the combined Mg-level of both components to be joined.

NOCOLOK® Precoating (water soluble)

Used in a mixture to improve adhesion of the flux coating

NOCOLOK® Precoating can be used in mixture with NOCOLOK® Flux or NOCOLOK® Zn Flux and water to improve adhesion of the flux coating. The system can be applied on external and internal surfaces in order to reduce flux fall-off and dust formation on handling of flux coated components.

Proper application of the Precoating/water/flux system shows no negative effects regarding the appearance of the post braze aluminium surfaces, compared to the use of pure NOCOLOK® Flux or pure NOCOLOK® Zn Flux (especially no discoloration effects).

  • Suitable application methods: 
    spraying, dipping or brushing
  • Surface temperature: 
    > 10 °C, with subsequent drying step
  • Recommended thickness of the coating:
    10 – 30 μm
NOCOLOK® Sil Flux (extra fine grade) plus Binder Mixture

A preparation to improve adhesion of the flux coating

NOCOLOK® Sil Flux efg plus Binder Mixture is a preparation of NOCOLOK® Binder, NOCOLOK® Thickener, NOCOLOK® Sil Flux extra fine grade and water to improve adhesion of the flux coating.

The system can be applied on external and internal surfaces in order to reduce flux fall-off and dust formation on handling of flux coated components.

When applied in accordance with recommendations, the binder/thickener/water/flux system shows no negative effects regarding the appearance of the post braze aluminium surfaces, compared to the use of pure NOCOLOK® Sil Flux extra fine grade (especially no discoloration effects).

  • Suitable application methods: 
    spraying, dipping or brushing.
  • Surface temperature: 
    > 10 °C, with subsequent drying step!
  • Recommended thickness of the coating: 
    10 – 30 μm.
  • Must be remixed before use
NOCOLOK® 028 Flux Paste

A paste range containing NOCOLOK® Flux with an organic carrier or water carrier system

The NOCOLOK® 028 flux paste range contains NOCOLOK® Flux with an organic carrier or water carrier system. Some of these products are cesium complex enhanced.

The NOCOLOK® 028 flux paste range is typically applied to braze critical joints by dispense, brush or, in some cases, by spray application. Used in joint situations where filler metal is resent in the form of a clad layer or filler metal shim and wire pre-forms are positioned in the joint area. No component mixing is required. Products are supplied as ready to use products, requiring stirring only.

NOCOLOK® 7028-9028 Metallized Flux Paste

For use where additional filler metal is required

NOCOLOK® Flux 7028-9028 metallized flux pastes range is a mixture of NOCOLOK® Flux, aluminium filler metal, AlSi 7/10/12, with an organic carrier system.

It is widely used where additional filler metal is required and can replace most braze operations where filer metal rings and flux pastes are used. The advantage is that a single product is used; no mixing is required. Products are supplied as ready to use products, requiring stirring only.

Al-Flux 0726 Flux Paste

A flux paste for the flame brazing of aluminum materials

As the active component of Corrosive-Flux-Paste, AL-Flux 0726 contains a mixture of LiCl, NaCl, KCl, inorganic- and complex- fluorides. Organic carrier systems are used to prepare a wide range of pastes for the flame brazing of aluminium materials.

Al-Flux 0726 Flux Paste is typically applied by dispensing and brushing for flame brazing. No component mixing is required. Products are supplied as ready to use products, requiring stirring only.

NOCOLOK® Ultra Flux Paste

A mixture of NOCOLOK® Flux, hydrocarbon, polymer and mineral oil carrier system

Ultra brazing flux paste is a mixture of NOCOLOK® Flux, hydrocarbon, polymer and mineral oil carrier system. Ultra flux paste is available with filler metal enhancement (AlSi 7/10/12) and available with Cs enhancement for special applications.

Typical applications are by dispensing onto the internal braze area of folder radiator and heater tubes (lock seam and B-style tubes) during the tube forming process (typically 0.1 – 0.5 grams/linear meter). No component mixing is required. Products are supplied as ready to use products, requiring stirring only.

NOCOLOK® Paint-F-Flux

A mixture of NOCOLOK® Flux, NMP-free water-carrier-system and binder/organic additives

Paint-F-Flux is supplied in a liquid format with a suitable viscosity for application by spray technique. It is applied by air spray or rolling.

Versions

  • PFF Standard: Basic version – market leader
  • PFF C35M: With Cs enhancement for brazing of Al materials with higher Mg content
  • PFF Inner Braze: Newly developed PFF with modified binder – for brazing of close surfaces, particularly for plate fin design of WCAC, for large Oil coolers, for CAC turbulators

No component mixing is required. Products are supplied as ready to use products, required stirring only.

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

Supporting products for aluminium brazing

NOCOLOK-Flux-Green-Filler-Stop
ANTAROX® BL-225

Wetting agent as suspension additives

ANTAROX® BL-225 is a biodegradable linear alcohol EO/PO. It is a low foaming non-ionic with excellent hard surface detergency combined to wetting properties. It is soluble in water and most organic solvents except paraffinics. It is stable in acidic and alkaline solutions and can be used as a rinse aid for commercial dishwashing or miscellaneous industrial applications. Compliant with the EU's detergent biodegradability regulation.

Application

  • Low foaming surfactant for brazing flux suspensions (up to 50 °C)
  • Recommended concentration: 0.1 to 0.2 %
Flux-Green-Filler-Stop

For use in brazing processes

As the name of this product type indicates, Flux-Green-Filler-Stop (GFS) “stops” molten brazing filler metal from flowing into areas where it is unwanted, thus keeping it “stopped” so that the surfaces remain clean and free from the presence of any filler metal.

Brazing filler metals do not like to bond with, or flow over, any dirt, grease, or oxides so the presence of any of these contaminants on the surface of parts to be brazed can prevent the filler metal from flowing over surfaces where these contaminants are located.

Therefore, GFS compounds are very effective at preventing molten filler metal flowing into protected areas. The GFS compounds are mixed with a liquid carrier solution to form and can be applied onto metal surfaces by using a small brush or by spraying or dipping.

Main features

  • To prevent brazing filler metal from flowing over, bonding to or any protected surfaces
  • To prevent the contamination of base or filler metal
  • To prevent a sintering of stacked parts during furnace brazing
  • To be used on any type of metal and in any type of brazing process
  • To run as a masking agent when thermal spraying metallic coatings
  • To make heat-resistant marks for identification purposes
U-Profile Brazing Alloys

Advanced technology for aluminium brazing

The U-Profile Brazing Alloys are alloys that already have the flux integrated into the material.

Using this new technology effectively reduces labour costs and waste.

Advantages

  • Reduced labour cost
  • Reduced waste
  • No post-braze cleaning
  • Flexible design
  • Multiple applications
  • Ideal geometry for feeding
  • No hidden flux voids
  • Precise control of alloy and flux

Ideal for Preforms

  • Unlimited preform options
  • Flux flows unobstructed
NOCOLOK-U-Profile-Brazing-Alloy

NOCOLOK® Publications

Here you can find the complete collection of NOCOLOK® publications.

NOCOLOK® flux brazing is ideally suited for the large scale joining of Al heat-exchangers 

NOCOLOK-glass-furnace

The flux and its residue are non-hygroscopic and in standard applications non-corrosive. NOCOLOK® flux is easily applied by flooding, spraying or dipping and the flux loading easily controlled. Brazed parts are ideally suited for painting or other surface treatments if enhanced corrosion resistance is desired. Complex product designs, continuous production, and a variety of alloy selections make the NOCOLOK® flux brazing process the preferred choice for the following industries:

Automotive Sector

Aluminium brazing is now the preferred process for the production of automotive heat exchangers such as radiators, condensers, evaporators and heater cores. Good corrosion resistance in standard applications, formability and high thermal conductivity make aluminium an ideal material for the construction of these heat exchangers. 

Aluminium brazing involves joining of components with a brazing alloy, that is an aluminium alloy (Al-Si) whose melting point is appreciably lower than that of the components. This brazing alloy is usually placed adjacent to or in between the components to be joined and the assembly is then heated to a temperature where the brazing alloy melts but not the components. Upon cooling, the brazing alloy forms a metallurgical bond between the joining surfaces of the components. 

In automotive heat exchanger applications, this filler metal is supplied via a thin sheet or clad on a core alloy. The core provides structural integrity while the low melting point Al-Si cladding alloy melts and flows during the brazing process, to provide upon cooling a metallic bond between the components. 

Commercial & Residential Air Conditioning

Air-conditioning market has been evolving dramatically over the past decades. The most important factors on system design and alternative technologies are: 

  • Legislation and phase-out schedules for ozone depleting refrigerants 
  • Increased demand for comfort cooling 
  • Rising energy costs 
  • Regulations on energy efficiency 

        
There are multiple ways to improve the efficiency of a given air-conditioning system. A minimization of the temperature difference between the airflows and the phase change temperatures of the refrigerants can be achieved by increasing the heat transfer surface area or by improving the heat transfer efficiency of the heat exchangers. Brazed microchannel heat exchangers have already proven that they are able to provide an elegant and cost effective solution for the utilization of this optimization potential – while also providing a number of other benefits. 

Why brazed heat exchangers? 

  • Improved heat transfer performance 
  • Pressure drop reduction 
  • Refrigerant charge reduction 
  • Reliability in performance 
  • Recycling advantages 
  • Noise reduction 
  • Lower weight

Refrigeration

Flame brazing aluminium to copper is common in the refrigeration industry where copper tubes are brazed to aluminium roll-bond panels or tubes. Brazing copper to aluminium is very similar to brazing aluminium to aluminium, but some precautions are necessary. In flame brazing the inter-diffusion of copper and aluminium can be halted rapidly by simply removing the heat source - in this case simply removing the flame is sufficient to allow the joint to cool quickly.

Household & Electrical Appliances

It is possible to braze aluminium and steel or stainless steel and this is practiced in the household appliance industry for the manufacturing of pots an pans for example.

In the manufacturing of pots and pans where there is a large surface area between the aluminium base plate and the pot, a mixture of filler metal powder and flux is often used. In aluminium tube to steel or stainless steel tube joining, conventional flame brazing techniques can be used. Filler metal wire, either pre-placed or fed into the joint must be used.

Solvay is the global market leader for non-corrosive fluxes used in aluminium brazing technologies: we sell NOCOLOK® brand products supported by a full spectrum of aluminium brazing supplies and services plus specialized know-how. The world of NOCOLOK® is the world of aluminium brazing. 

Solvay Flux GmbH - Garbsen, Germany

Solvay acquired the Flux Schweiß- und Lötstoffe GmbH (Flux), now renamed as Solvay Flux GmbH, complementing its aluminum brazing capabilities and products with fast-growing formulations for automotive heat exchangers and stationary heat, ventilation and air conditioning units.

 Solvay Flux in Garbsen, Germany

Solvay Flux GmbH is a part of Solvay Special Chemical’s Business Unit Automotive, whose aluminum brazing products are globally recognized as the industry standard. 

Combining Solvay’s fluorinated chemical research and innovative capabilities with Flux’s outstanding know-how in formulations and applications will form a strong global platform for growth, bringing innovative and tailor-made solutions to customers. 

We continue to be your leading and competent partner for aluminium brazing challenges and remain at your disposal. Please contact us for any further information or visit our world of NOCOLOK®.  

The Solvay Flux GmbH headquarters and production facilities are located in Garbsen, near Hannover. Forty employees work in the areas of research, management and marketing. Solvay Flux maintains representative offices and storage facilities worldwide via the Special Chem global distribution network. 

Production hall in plant Garbsen, Germany

To support customers locally in North America Special Chem also produces Pastes and coatings at its facility in Cincinatti Ohio.
 

Cincinatti - Ohio, USA

The Cincinnati plant supplies various chemicals for the catalytical converter production  and has a lot of know how in automotive requirements. In addition the powder production there requires similar laboratory facilities like for the flux chemistry.

Solvay Cincinatti produces Paint fluxes and various pastes. To be regional improves the shelf life of such liquids, offers make to order processes and shortens the delivery times.

The CIN plant works with the same raw materials and process recipies like its sister plant in Garbsen Germany and fulfills general requirements of global key account clients.      
 

NOCOLOK® powder sites

Bad Wimpfen, Germany - Onsan, South Korea - Quzhou, China

Solvay is the global market leader for non-corrosive fluxes used in aluminium brazing technologies: we sell NOCOLOK® brand products supported by a full spectrum of aluminium brazing supplies and services plus specialized know-how. The world of NOCOLOK® is the world of aluminium brazing. 

Solvay started as pioneer at their German Bad Wimpfen site in 1980. There Solvay produces a portfolio of inorganic fluorides, the most of them used for metal and glass surface treatment applications.

Bad-Wimpfen-DJI

The uniqueness of the Nocolok brazing process brought a lot of growth opportunities followed by new sites in South Korea (Onsan in 2007) and China (Quzhou in 2014).

Aerial view of Onsan plant

Onsan plant, South Korea

Electronic-Wet-chemicals-Plant-Quzhou

These 3 sites represent the chemical and innovative competence beside the 2 composition and blending facilities which focus on the application varities.

The NOCOLOK® Brazing Technical Center

NOCOLOK® flux brazing technology is the industry standard for brazing aluminium heat exchangers and other components.

Solvay Fluor continues to strengthen its technical assistance support in the Brazing Technical Center.

The Technical Center is equipped to fulfill many possible customer requests from cleaning and degreasing, to fluxing and brazing, and on to post braze evaluations such as corrosion testing and metallographic examinations. The Technical Center is at your service for all your NOCOLOK® brazing needs.

Cleaning

The first step in any successful brazing operation is the removal of residual lubricants and forming oils. With a view towards more environmentally friendly degreasing methods, an aqueous degreasing station is available. Here various cleaning methods and aqueous degreasing agents can be evaluated to suit your particular needs. A drying furnace normally used for pre-drying fluxed parts can also be used to evaluate thermal degreasing methods.

Pre-fluxing using Binder-Based Spray Method

Purpose

To pre-flux sample parts – either on the complete surface or selected surface areas. Different types of flux and binder mixtures can be used. Manual and semi-automated pre-fluxing is possible. Optimal binder and mixture compositions for customer specific parts and brazing configurations can be evaluated.

Procedure

The components are pre-fluxed using manual or semi-automatic equipment which ensures uniform coating and control of the load. By changing the rpm of the rotating table the spraying time for the parts can be varied, thus changing the paint load. Constant rpm and the fixed setting of the spray gun ensure repeatability during testing. The design of the equipment makes it possible to paint large quantities of parts, even up to a few hundred per working day.

NOCOLOK-Technical-Center-pre-fluxing-graphic

 

Temperature Determination in Batch-Type Furnace

The batch brazing furnace meets all the requirements of full production capacity tunnel furnaces in terms of heating rate, atmosphere purity and temperature uniformity.

The maximum size for the component to be brazed is 600 mm width x 600 mm height x 900 mm depth. The maximum heatable mass is 60 kg aluminium plus an additional 10 kg steel.

Special features such as viewing ports allow a first hand look at brazing in progress.

Temperature Monitoring System "Datapaq"

One important factor in aluminium brazing is monitoring the component temperature.

For successful brazing of heat exchangers, it is necessary to precisely maintain the temperature profile in the furnace zones during the entire brazing cycle. A uniform temperature distribution throughout all parts of the units is essential for good joint formation.

The control of temperature and time profiles during brazing can be realized by using a system (Datapaq) which records all information with eight precision thermo-couples. This heat-insulated device is passed through the brazing cycle together with the heat exchanger. Thereafter, the data is processed and transferred by a computer program.

Flame Brazing

Purpose

Testing the characteristics and properties of different material and flux combinations under flame brazing conditions.

Procedure

The components to be joined are first cleaned and then assembled using holding fixtures. Filler alloy is added in the form of brazing paste or brazing rings. Fluxing paste is applied manually by brush to the joint area.

After fluxing, the parts are heated with an open propane-butane flame. Operation of the flame is manual. Several different material combinations like Al-Al, Al-Cu, Al-Steel are possible.

Controlled Atmosphere Aluminium Brazing in Laboratory Glass Furnace

Purpose 

Testing brazing characteristics and properties for different combinations. 

Procedure

Two different parts made of aluminium alloys (coupon 25 mm x 25 mm and angle shaped stripe) are coated with flux, dried and brazed in a laboratory glass furnace. The brazing process can be filmed (video recorded) upon request.

The furnace heating control allows different linear heating rates and dwell times at any temperature to be applied. 

Standard brazing heating profile: 

Heating rate – 30 °C/min up to 605 °C Dwell time – 2 minutes at 605 °C, Cooling rate – approx. 30 °C/min 

The single unit test involves the following: 

Preparation of brazing sample (one coupon and one angle), coating of sample with flux (Solvay’s material and the clients materials can be used), brazing , optional recording by real time movie, and report. Brazing is evaluated by an arbitrary scale from 1 to 5, where 5 is very good. 

Metallographic Examination

Purpose 

To observe under an optical microscope metallographic structures of investigated materials, for example to evaluate brazing quality, joint geometry, progress of corrosion, etc. 

Procedure 

Depending on the sample, an appropriate cross section is chosen and cut either with a band saw or with a high precision cutting wheel machine. The cut out samples are embedded in epoxy resin and gradually polished mirror to obtain a like surface. 

The cross section can be observed and photographed under either non etched or etched conditions. Optionally, special electrochemical etching can be carried out to reveal the grains. 

The results of optical microscope observations are summarized in a report including some interpretations of the observed microstructure features. 

Controlled Atmosphere Aluminium Brazing Batch Type Furnace

Purpose

Brazing trials for single or small numbers of units, e.g. prototypes or mock up components. It offers a means of simulating the whole production process starting with part assembly, fluxing (wet and electrostatic methods are possible) and brazing. The size of the brazing chamber and other equipment makes it possible to braze standard-size heat exchangers. 

Procedure 

The components are cleaned by aqueous washing, then assembled and fluxed in either a wet spray or electrostatic chamber. Other fluxing alternatives like pre-fluxing with a mixture of flux and binder are also possible. The details of the fluxing process are individually chosen depending on the part design and customer requirements. 

Brazing is performed under nitrogen atmosphere in a batch type furnace. The length of time the parts are heated closely matches typical heating rates seen in industry. 

Corrosion Testing

Purpose

To check corrosion resistance and behaviour of real parts as well as mock ups and laboratory samples. 

Procedure 

Testing is done in a spray type chamber (approx. 1000x60x25 cm). Standard testing usually follows ASTM no G85 – SWAAT Test, however, other methods such as the Salt Spray Test are also possible. 

You can buy and download the ASTM G85 - 09 Standard Practice for Modified Salt Spray (Fog) Testing on the ASTM website.

Scanning Electron Microscopy

Purpose 

To investigate sample surface morphology and to determine presence and distribution of different chemical elements. 

Procedure 

Procedure covers: preparation of the sample (cutting), electron microscope analysis, element mapping, report

NOCOLOK-Technical-Center-scanning-lectron-microscopy

 

Download

NOCOLOK® Certificates

Our NOCOLOK® production is certified under the highest quality standards 

in Germany

Bad Wimpfen (BWF) IATF 16949 
Garbsen DIN EN ISO 9001, 14001
in South Korea 

Onsan (ONS) ISO/ TS 16949
in China

Quzhou (QUZ) ISO 9001, ISO TS 16949 
in USA

Cincinnati (CIN) ISO 9001, 14001
 

NOCOLOK® Packaging

Please find below the different packaging types available for these products or download our NOCOLOK® Complete Packaging Bochure.

NOCOLOK® Flux
NOCOLOK-packaging-flux-25kg
NOCOLOK-packaging-flux-fibre-drums-bwf-40kg
NOCOLOK-packaging-flux-steel-drums-bwf-135kg
NOCOLOK-packaging-flux-fibre-drums-ons-135kg
NOCOLOK-packaging-flux-1000kg
NOCOLOK® Flux Drystatic
NOCOLOK-packaging-drystatic-40kg
NOCOLOK-packaging-drystatic-135kg
NOCOLOK® Cs Flux
NOCOLOK-packaging-cs-flux-40kg
NOCOLOK-packaging-flux-1000kg
NOCOLOK® Sil Flux Fine Grade / Extra Fine Grade
NOCOLOK-packaging-sil-flux-and-efg-40kg
NOCOLOK® Li Flux / Li Flux Drystatic
NOCOLOK-packaging-li-flux-and-drystatic-40kg
NOCOLOK-packaging-li-flux-and-drystatic-135kg
NOCOLOK® Zn Flux
NOCOLOK-packaging-zn-flux-25kg
CsAlF4 / CsAlF-Complex
NOCOLOK-packaging-csaif4-and-complex-40kg
NOCOLOK® CB Flux K2SiF6
NOCOLOK-packaging-cb-flux-25kg
NOCOLOK® Flux Pastes and Paints
NOCOLOK-packaging-flux-pastes
NOCOLOK-packaging-paint-f-flux-20kg
NOCOLOK-packaging-paint-f-flux-200kg
ANTAROX® BL 225
NOCOLOK-packaging-antarox-bl225
Green-Filler-Stop
NOCOLOK-packaging-Green-Filler-Stop
NOCOLOK® Precoating
NOCOLOK-packaging-Precoating-10kg
Package Offerings
NOCOLOK-packaging-40kg-drum-pallet
NOCOLOK-packaging-135kg-drum-pallet
NOCOLOK-packaging-40kg-drum-pallet-li-flux
NOCOLOK-packaging-precoating-buckets
NOCOLOK-packaging-paperbags-pallet

NOCOLOK® Videos

 

NOCOLOK® Always on Top!

Active Surface Finishing: NOCOLOK® Li Flux, the new brazing agent from Solvay Fluor


 

The new NOCOLOK Flux 3.0 Smartphone App for Aluminium Brazing

NOCOLOK® is a name synonymous with innovative aluminium brazing flux products and solutions. So it's no surprise that Solvay Fluor is the first to provide a smart phone App for aluminium brazing. Comprehensive knowledge in pocketsize format for all users in the aluminium industry is now available free of charge in the App Store and the Android Market under the name NOCOLOK.

 

Why do you need ... NOCOLOK?

NOCOLOK® is indispensable as a flux for brazing aluminium components, especially in the automotive and in HVAC industries. It dissolves the natural oxide layer of the aluminium surface and allows a durable, solid joining of the aluminium parts. This works for flame brazing as well as for controlled atmosphere brazing in a furnace, for example for aluminium heat exchangers in air-conditioners and automobiles. Solvay produces NOCOLOK® Flux at its plants in Bad Wimpfen, Germany and Onsan, South Korea.

 

NOCOLOK Flux Research in Hanover

The Solvay Fluor research centre in Hanover offers unique opportunities for the development of future products as NOCOLOK LiFlux for HVAC applications.

 

Solvay Technical Training Seminar: Aluminium Brazing and NOCOLOK

The European Association for Brazing and soldering -- EABS for short -- together with experts from Solvay Fluor, holds technical training seminars  in which the theory and practice of flame and furnace aluminium brazing are communicated in detail.

40 interested participants from all over the world gather for the two day seminar in Hannover, Germany: technical staff, design and production engineers as well as production engineering managers.