Applications – spot welding, Ordering information, Spot welding – Sonics H540 E User Manual
Page 32
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I N S T R U C T I O N M A N U A L • H A N D H E L D W E L D E R S
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A P P L I C A T I O N S – S P O T W E L D I N G
During spot welding, the horn tip penetrates through the top sheet and
enters the bottom sheet to a depth of one half the top sheet thickness. The
displaced molten plastic is shaped by a cavity in the tip to create an annular
formation around the weld. Simultaneously, the molten plastic displaced
from the second sheet flows into the preheated area and forms a permanent
molecular bond. Large thermoplastic parts and applications with hard to
reach joining surfaces can easily be welded together using an ultrasonic spot
welder and standard replaceable tips.
STANDARD THREADED TIPS FOR SPOT WELDING
ORDERING INFORMATION
Specify tip required using code letter.
Example:
Spot weld tip “SA” indicates a tip used for spot welding – 1/32" thick
material.
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BEFORE
AFTER
PLASTIC
HORN
PLASTIC
3t
t
1.5t
Material Thickness
TIP
CODE
inches
mm
LETTER
1/32
0.793
SA
3/64
1.190
SB
1/16
1.587
SC
5/64
1.984
SD
3/32
2.381
SE
7/64
2.778
SF
SPOT WELDING
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