Stack Assembly; Replaceable Tip Installation - Dukane iQ Series User Manual

User's Manual

Stack Assembly

Attaching a Replaceable
Tip to a Horn
1. Inspect all horn and tip surfaces for stress cracks,
chips, or gouges. Any of these irregularities will
affect operation and could lead to further equip-
ment damage. Contact the Dukane Ultrasonics
Tooling Department concerning damaged horn
components.
2. Apply an extremely thin layer of a high tem-
perature, high pressure silicon grease to the back
surface that mates with the horn. The grease will
allow both surfaces to intimately mate and become
acoustically transparent which improves the energy
transfer. Do not apply any grease to the threads.
We recommend Dow–Corning #4 (or #111 as an
alternate). A small packet of Dow–Corning #4
is supplied with the system. If you cannot use a
silicon–based grease in your facility, a petroleum–
based grease may be used. However, it is likely to
leave carbonaceous deposits on the surface, and
require more frequent joint maintenance. Failure to
follow these instructions, may result in the mating
surfaces bonding and difficulty removing the tip
from the horn.
3. Thread the tip into the horn and tighten to the
torque specifications below using an open end
wrench of the correct size to fit the wrench flats of
the tip. This is illustrated in Figure 6-4. If neces-
sary, use a spanner wrench (on horns with spanner
wrench holes) or an open end wrench (on horns
with wrench flats) to keep the horn from turning
in your hand. A canvas strap wrench is permissible
if it does not gouge or scratch the horn.
Replaceable Tips to Horn
Inch-lb Ft-lb N-m
360 30 40.7
336 28 38
300 25 33.9
240 20 27.1
Table 6-I Tip Torque Unit Conversions
Page 3
Size
1/2" x 20 tpi tip threads
3/8" x 24 tpi tip threads
5/16" x 24 tpi tip threads
1/4" x 28 tpi tip threads
NOTE
Do not apply any grease to the threads
of the replaceable tip. This may cause
the tip to loosen from the horn resulting
in inconsistent operation.

NEVER clamp the horn
in a vise. The resulting
scratches or gouges in the
surface are stress risers
which may result in cracks.
Tighten
Figure 6–4 Replaceable Tip Installation
NOTE
Dukane Part No. for the 20kHz span-
ner wrenches is 721–68.
Dukane Part No. for the 40kHz span-
ner wrenches is 721–44.
Dukane Manual Part No. 403-577-00
CAUTION