Yes, SikaPower®-4720 can be spot-welded within the working time.
To ensure best corrosion protection behaviour, SikaPower®-4720 is applied on both bond faces covering all grinded areas.
The round bead guarantees a bond without any air entrapments to ensure optimum strength and corrosion protection.
The slightly structured surface is caused by glass beads which ensure a perfect bond thickness of 0.3mm and prevents from over clamping.
- Mutli material design does often not allow to weld anymore and requires bonding technology
- High strength steels types lose their performance if they are treated with heat -> Cold repair process with structural bonding combined with rivets lead to optimal repair performance
- Welding applications often involve hours of preparation and dismantling work whereas bonding offers an efficient repair process
- OE assembly is done using bonding technology
As SikaPower®-4720 is filled in a convenient coaxial cartridge a rather high extrusion force is the result which can be lowered by warming up the cartridge before the application.
An air pressured gun without piston could lead to extrusion of just one component or air intrusion having a negative effect on the performance. Piston type gun is a must to ensure performance.
Products use in OE metal bonding are 1C epoxy products curing during the paint process at high temperatures which cannot be applied for repair processes. Therefore a ambient temperature curing 2C Epoxy is used.