7
Start-up and weld quality check
Page 34
Stud welding unit
operating manual
Date:
July 2021
ALPHA 850
07.2021 / EN
Rev.:
A
7.2 Adjusting the weld parameters
The settings to the electrical and mechanical weld parameters must be made on both
the welding device and on the welding gun.
“Weld current” and “Weld time” parameters:
•
The electrical parameters must be set application-specific on the appropriately
marked potentiometer of the ALPHA 850.
•
The guidelines for the affected weld process can be found in the following tables
or graphics.
“Lift dimensions” and “Stud stick out” (projection) parameters:
•
The mechanical parameters must be set on each connected welding gun.
•
The settings can be found in the operating manual of the appropriate welding gun.
•
The guidelines for the weld process can be found in the gun operating manual or
the following graphic.
Guidelines for weld parameters:
The settings values indicated in the following tables or graphics should be considered
only as guidelines to be achieved under optimized welding conditions.
The optimal weld parameters must always be determined in consideration of factors
such as material and surface characteristics of the workpiece, sheet metal thickness,
welding position, stud type, stud dimensions, etc., through test welds.
Make sure the test welds reflect real conditions during the production process as much
as possible.
Based on the weld result, the settings to the electrical and mechanical weld
parameters must be adjusted to the specific welding task.
If defective welds are suspected, the settings on the ALPHA 850 welding device and
the welding gun must be optimized.
The results of the test welds must be checked according to EN ISO 15614-1, 2
*
)
,
*
)
EN ISO 15614-1, 2: Specification and qualification of welding procedures for metallic materials –
Welding procedure test
