Performing Strength Tests - Car-O-Liner CR510 Instruction Manual

CR500 range

4.10.7 Performing strength tests

Metal sheets breaks – the
weld nugget is strong
enough. The set current
and time is sufficient.
Weld nugget breaks – the
weld nugget is too weak.
The set current and time
must be increased.
35201, ENG - rev. 3, 2006-03
The aim of spot welding is to restore the vehicle to its former condition. It is
therefore important that the weld nuggets have sufficient quality. The quality
of the weld nuggets are checked with strength tests. When performing these
tests, one ensures that the set weld current and weld time is sufficient.
When performing a strength test, it is always the metal sheet – not the weld
nugget – that shall break. To perform a strength test:
1. Set the desired welding program ( see section 4.2.3 "Setting the weld
programs").
2. Weld two metal sheets that have the same thickness as those to be
welded on the vehicle.
3. Perform a shear test or try to tear the metal sheets apart.
Car-O-Liner AB
49