Further topics – find more in our Knowledge Center and on our website!
FAQs
Where can I find technical support and instructions?
In our Service Portal, you’ll find technological insights, guides, and a direct look into our processes. For specific questions, contact us via our form or by phone.
What is calibration and why do I need it?
Calibration determines and documents how accurately your stud welding machine’s display matches the actual value, without making any adjustments to the device itself. It is essential for quality assurance, ensures reproducible welding results, and fulfills legal documentation requirements. KÖCO recommends annual calibration according to DIN EN ISO 17662, carried out by our qualified specialists.
Will I receive a loaner if my stud welding machine is defective?
Yes, in the event of equipment failure, you will receive a loaner within 24 hours (Germany) or 48 hours (EU-wide) for the duration of the repair. You cover the transport costs. This service is available for 24 months from the date of purchase.
What should I check before sending my machine for repair?
Before shipping your welding machine for repair, first check whether it’s truly a device fault. Often, poor welding results are caused by operator errors or incorrect parameters. Use our welding parameter diagram to verify your settings and working method. If errors persist after this check, it’s likely a genuine equipment defect and repair is necessary.
How should I package my welding machine for transport?
Welding machines have a rear-shifted center of gravity due to the heavy transformer and must therefore be securely and stably fixed to a pallet. Use sturdy straps (not too tight to avoid housing deformation), edge protection, and shrink wrap to protect against dirt and moisture. Ensure the machine’s wheels cannot slip into pallet gaps. This can cause tilting and transport damage. Closed pallets or wooden crates are also suitable, provided the machine is adequately secured.
Does KÖCO offer training?
Yes, we offer training in welding technology and application consulting. Training sessions can also be held directly at your facility for your operating personnel (available for 24 months from the date of purchase).
Warranty Conditions
You can download the complete warranty conditions for your KÖCO products here.
Glossary
Here you’ll find all the key terms related to our services. Each term is clearly explained, showing you what support you can receive for your welding projects.
Hardness test
The hardness test is used to check the resistance of a stud weld in terms of strength and toughness, and assesses the hardness profile of the weld zones. The calculation of characteristic values (hardness values) enables the assessment of a stud weld for a technically relevant component, which requires official acceptance as part of general quality assurance. During the hardness test, an indenter with a defined dimension and defined load is pushed into the weld zone to be tested. The hardness is determined by measuring the size of the imprint left by the indenter and the associated test force.
Auxiliary arc
In drawn arc stud welding, a small auxiliary arc is created when lifting the stud off the workpiece, which is superimposed immediately afterwards by the main arc. The auxiliary arc is merely tasked with emitting charge carrier and ionizing the arc path between the electrode (cathode) and workpiece (anode). Its arrival at the latter prepares the transfer of current.
→ see main arc
Visual inspection
The quality of a stud weld connection can be negatively affected by external influences. An unnoticed draft, moisture, and impurities at the weld point as well as an insufficient power supply all impact the welding process. In addition, careless calibration or parameter configuration errors can have a significant adverse impact on the quality of the stud weld A trained eye and, where necessary, a magnifying glass are all that are needed to detect external defects.
Typical error patterns in stud welds are:
- slanted studs
- blowholes
- penetrations
- pores
Didn’t find the right term?
Explore all technical terms in the full glossary:
