CUPREET chemicals

CUPREET

Product Overview

CUPREET fluxes are specialized fluxing materials available in powder or briquette form for the melting of copper and copper-zinc alloys.

  • CUPREET 1: Block form, reddish-brown in colour
  • CUPREET 8: Powder form, black in colour
  • CUPREET 44: Powder form, green in colour
  • CUPREET 49: Powder form, white in colour

Purpose

During the melting of copper and copper-zinc alloys, oxidation can contaminate the molten metal with oxides. The melt can also absorb hydrogen from the furnace atmosphere, which may contribute to gas porosity. In copper-zinc alloys, zinc loss through fumes and the formation of zinc oxide showers can also occur.

 

Instructions for Use

    • Add the appropriate CUPREET grade during the early melting stage.
    • Place CUPREET 1 at the bottom of the hot crucible before charging metal.
    • Alternatively, add CUPREET 44 or 49 powder directly to the melt.
    • Maintain the formed slag layer during melting.
    • Use 1 block or 1 kg powder per 100 kg metal.
    • For electric furnaces, use CUPREET 49 at 0.5 kg per 100 kg metal in two additions.
    • Deoxidize the melt with suitable deoxidizing tubes.
    • Skim the final dross and proceed with pouring.

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