Powder spray torch ?

Below is a link to cast iron welding written

by a fellow that has been repairing cast iron

for a very long time. The link will take you thru

several pages , especially informative for those

that think they know a lot about cast repair .

george

• cast iron welding

Chuck, Metal spray comes in basic types, hot spray (
usually called powder spray ) requires the base
material be quite hot much like brazing and the
spray material will (wet) flow somewhat like brazing . The other system , cold spray requires
base metal to be minimum 200 deg and not over
500 deg , work is under cut and sprayed to slightly
over size and turned to finish size. It is used
mostly for shaft and bearing bore repair. The hot spray will do repair on castings and manifolds , but a crack in the side of a block will have the same problem with expansion and
contraction as any other type of weld . I have had both types of spray for more than 30 years and when I need to repair castings and
especially manifolds I use oxy/acet cast iron rod and preheat as necessary . Below is a link to my web site with some cast
iron repair and some other things , also a link
from there to a sequence of the repairs . In the
terra axle repair there are several pictures of
the prep , spray , and the finished spray on the
seal surface.

george

• cast repair and metal spray