Fronius DeltaSpot G2, Operating Instructions And Spare Parts List

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EN
General
Principle The DeltaSpot resistance spot welding system is a revolution in spot welding technology.
It uses continuous process tapes that enable you to join steel, galvanised sheets and alu-
minium, as well as dissimilar materials such as steel and aluminium. The process tapes
protect the electrodes and prevent spattering. A further advantage of DeltaSpot is the extra
process heat resulting from the electrical resistance of the process tape. The required am-
perage can be reduced and the energy requirement significantly lowered.
The continuous advance of the process tape enables spot welds of equally high quality to
be reproduced.
The result is previously unmatched precision in the welding process and maximum service
life for the electrodes.
Application areas The DeltaSpot spot welding process is designed for joining two or more sheets of standard
coated or uncoated steels and all standard aluminium alloys. It is also ideal for welding dif-
ferent combinations and thicknesses of materials (Boron steel, CrNi, etc.).
Main application areas:
-
Automotive and component supply industry
- Household appliances industry
- Railway vehicle construction
- System and plant construction
- Aerospace industry
Information for di-
mensioning the
welding system
CAUTION!
Overloading the welding system may result in damage to property.
Check the inverter and the transformer are configured correctly for the respective applica-
tion.
To prevent components from being overloaded, it is necessary to define the load capacity
of the inverter and the transformer in relation to each job.
Load capacity diagrams define the maximum permitted welding current in relation to the
duty cycle.
Operating points need to be defined both for the transformer and for the inverter. The lower
of the two values should be used for the application.
Calculating the maximum permitted welding current for the transformer
Calculating the maximum diode duty cycle
- Due to the lower heat capacity of the diodes, the maximum permitted duty cycle
is determined using the "welding spot to welding spot" time (welding cycle time).
- If the application uses current times or welding cycle times of different lengths, al-
ways use the longest current time and shortest welding cycle time
- Important! If the longest current time is greater than two seconds, the duty cycle
of the diode should be set to 100 %.
DC_Diodes = longest current time/shortest welding cycle time x 100 %
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