Dukane 210 Manuale Utente Scaricare il pdf (Pagina 107)

Dukane Manual Part No. 403–558–03

Section 9 – Care & Maintenance

Crowning

A surface which is burnished only in the inner

ring area around the stud, indicates the surface is

convex or crowned. An example of this is shown

in gure 9–5. To get an idea of amount of devia-

tion from a at surface, place a straight edge along

the stack element. Since its surface is higher at the

center than at the edges, there will be a gap at the

outer edge of the element.

Center Depression

A surface which is burnished only in the outer ring

area around the edge, indicates the surface is con-

cave or depressed. An example of this is shown in

gure 9–6. To get an idea of amount of deviation

from a at surface, place a straight edge along

the stack element. Since its surface is higher at

the edge than at the center, there will be a visible

gap near the center indicating the depth of the

depression.

Straight

Edge

Crown

Gap

Straight

Edge

Gap

Corrosion

Corrosion is a factor to consider when determin-

ing the overall system performance. Over time,

corrosion can build up on the mating surfaces of

the acoustic stack. This build up interferes with

the efcient transfer of ultrasonic energy to the

parts to be welded. It may contribute to a loss

in performance. Evidence of corrosion build up

includes discolored mating surfaces or surfaces

encrusted with hard deposits. To extend equipment

life and maintain performance levels, minimize the

system’s exposure to corrosive sources.

Figure 9–5 Crowned Surface

Figure 9–6 Center Depression

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Dukane 210 Manuale Utente Pagina 107