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.
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.
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.
- 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
The slightly structured surface is caused by glass beads which ensure a perfect bond thickness of 0.3mm and prevents from over clamping.
The round bead guarantees a bond without any air entrapments to ensure optimum strength and corrosion protection.
To ensure best corrosion protection behaviour, SikaPower®-4720 is applied on both bond faces covering all grinded areas.
Yes, SikaPower®-4720 can be spot-welded within the working time.