Fixing cast iron - gluing is the solution

Cracks in a cast iron housing or a cylindrical shaft that has worn out can be repaired with a special adhesive, as can damage caused by wear on the keyway of hubs and shafts. Today, not every metal needs to be welded, because there are special epoxy adhesives that are enriched with metal.

All-rounder for the repair of cast iron

Cast iron is probably one of the most difficult to weld metals. Even professionals and experienced welders often advise against welding parts made of cast iron. This is primarily due to the particularly high proportion of carbon in cast iron. The brazing of cast iron is possible only under very specific conditions and with certain solders. For a handyman is neither welding nor soldering of cast iron recommended.

Therefore, the available adhesives for cast iron or other metals are almost a miracle. The joining of damaged parts made of cast iron has become child's play thanks to the special adhesive. The metal does not even need to be heated on most of these products. This is necessary even during soldering.

Numerous advantages of the special adhesive

  • Cast iron does not need to be heated before gluing
  • Adhesive has metallic appearance
  • different types of metal as filler possible
  • with steel, aluminum or non-metallic filler
  • simple application
  • good adhesion on different metals
  • fast repair of cast iron
  • resistant to chemicals
  • hardly any shrinkage in the parts of cast iron
  • Voltage development greatly reduced
  • Machining, such as drilling or tapping after hardening feasible
  • very high pressure resistance in mechanical applications

Components of special adhesives

The special adhesive is based on a base of epoxy resin and a filler embedded in it. This filler can consist of both metallic and non-metallic material. As metal comes steel or aluminum in question. So you should look for something that you choose the right adhesive material for your purpose. For cast iron, primarily steel with epoxy resin is used.

Tips & Tricks

Although it is often not considered necessary, you should sand the fractures before using the adhesive. It is also helpful to pre-degrease the splices to allow the glue to grip properly. Take care that you do not get any of this type of glue on your finger, cleaning is almost impossible.

Video Board: How to Repair Cast Iron with JB Weld