Furnace Muffle Cleaning
Muffle cleaning is always performed with the furnace turned OFF. The
internal temperature must be below 50C. Please allow ample time for
natural cooling to occur, furnaces should NEVER be force-
cooled with fans or extremely high atmosphere flow.
The first cleaning step is removal of the furnace belting. The belt
is placed into an ultrasonic cleaning tank, in D.I. water. The water
is changed as often as necessary, until it remains clean, indicating
that all loosely adhering particles have been removed.
Unlike abrasive cleaning methods, when using ultrasonics the tightly
adhering protective oxides are not disturbed. Therefore, the
ultrasonic cleaning process has absolutely no detrimental effect on
belt life.
Next, all of the existing dust and contamination is vacuumed from inside
the furnace using progressively longer lengths of 1" diameter pipe,
which can be threaded together to reach the entire length of the furnace.
The vacuum which is connected to the last pipe in the chain, should
be a Clean Room Vacuum with at least a .25 micron HEPA filter.
The muffle is then thoroughly scrubbed using wire brushes and specialized
tools which fit into the crevices and corners of the furnace interior.
Once all particulate is dislodged, the vacuuming is repeated. The vacuum-scrub-vacuum
procedure greatly reduces the introduction of particles into the room
surrounding the furnace.
Special attention is paid to cleaning the furnace exhausts, the drive
system drums and the entire belt return system. The belt is then reinstalled
and the furnace is ready to be restarted.
You can expect the furnace cleaning procedure to completely eliminate
dust and contamination as the cause of any reject parts or other problems
you have experienced.
Home
Phone:
(928)
776-1151
FAX:
(928)
776-1181
Feel free to
E-Mail Us
