Nickel paste is used in a wide range of legal systems, such as automobiles and boilers.
Typical automotive applications are EGR coolers for diesel (exhaust gas recirculation) and gasoline engines, catalytic converters and fuel rails.
Brazed plate heat exchangers, heaters and boilers are common industrial applications.
Nickel paste is very suitable for brazing stainless steel as well as Ni and Co based alloys.
It is used through application techniques such as spraying, roller coating, screen printing, and spraying by preparing a paste with optimal properties for each powder selection and content.

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In the past, most of the brazing work was done with a vacuum furnace, but due to the low productivity, now more and more companies are using gas atmosphere continuous furnaces to increase productivity.  

To keep up with these streamlined equipment and changing markets, you need the right custom paste.

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● Dawon Chemtech Paste Product Name and Description

​   1) Paste powder content: 80%~90%

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   2) Can be developed separately according to workability

      a. Application method (syringe, metal masking, silk screen, etc.)

      b. Required drying speed

      c. required viscosity, etc.

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   3) Product packaging: 4kg/10kg

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   4) Product name and ingredients

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     a. DWNP-2 (BNi-2)  

       : Suitable for high stress and temperature applications such as turbine components.  

        It is also widely used in food processing equipment.  

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     b. DWNP-7 (BNi-7)  

       : Low brazing temperature, good diffusivity, low erosion.  

        Excellent chemical corrosion resistance at high temperatures.

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     c.  DWNP-12 (BNi-12)

       : Product with low brazing temperature and securing strength and corrosion resistance.

        Excellent chemical corrosion resistance at high temperatures.

     d. DWNP-N102 (Ni-613/685)

       : High strength and ductility after bonding with low brazing temperature.

        Very good corrosion resistance and low substrate erosion.

        Widely used in the automotive industry (EGRS).

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   3) Changes in the paste market

    a. Corrosion resistance and strength standards for automobiles and boilers

      : Two types of powder with high Cr content, the element that has the greatest influence on corrosion resistance and strength, has been developed and is being replaced.

       Complete replacement of raw materials for boiler sensible heat and latent heat exchangers, automobile EGR coolers, and EGR cooler related parts.

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       ▷ BNi-2 → BNi-685(613)

       ▷  BNi-7 → BNi-12