ERICO CADWELD Exothermic Welding - Manual (Page 16)

Fig. 10
Graphite absorbs moisture. Ignite the propane torch
and dry out the inside of the mold thoroughly on
both sides, heating the mold to approximately 250
degrees Fahrenheit (120 degrees Celsius).
Fig. 11
The conductors should be clean and dry before the
connection is made. Use a propane torch to dry wire
conductors and remove remaining cleaning residue,
solvent, or water before making the CADWELD ®
connection.
Fig. 12
Next, use a wire brush to further prepare the surface
of the conductors (CADWELD T-313 or T-314
brush). Scrape the outer surface to remove dirt and
oxidation. You will notice a slight color change.
14
The CADWELD
®
PLUS Process