Treatment Services

Semco Carbon offers the following treatments and impregnations to extend and enhance the performance of our machined graphite:

Oxidation Reduction

For use in an oxygen rich environment at temperatures up to 1,000 degree F. This treatment applies a thin film barrier both externally and on the internal porosity of graphite materials, thereby reducing the eroding effect of oxygen on synthetic graphite binders. Typical uses for this treatment include static casting, glass manufacturing, molten aluminum processing

Phenolic Resin

This process will render the base synthetic graphite resistant to acidic and basic solutions.  The inherent porosity of the graphite is filled with phenolic resin and then cured to produce a higher density composite material with almost not porosity.  Typical uses for this treatment include chemical baths, heat exchangers, anodes, cathodes and applications requiring the elimination of porosity.      

Wax Impregnation

This process will render the base synthetic graphite resistant to acidic and basic solutions at lower operating temperatures.  The inherent porosity of the graphite is filled with a paraffin and then cured to produce a higher density composite material with almost not porosity.  Typical uses for this treatment include chemical baths, heat exchangers, anodes, cathodes and applications requiring the elimination of porosity.  

Metal Impregnation

This process will allow the open porosity of the synthetic graphite to be filed with a variety of metals depending upon the application.  Common metal fillers are copper, babbitt, and antimony.  Typical uses for this treatment include bushings, bearing, and wear plates.  

Purification

This process will reduce the total ash and impurities in the synthetic graphite materials to ranges below 20 ppm -  0.05 ppm (depending upon the base grade).  Typical uses for this treatment include hot zones, crystal and quartz growing and semiconductor production.