Cast Iron Recovery on damaged Gearbox cover

The damaged area is removed and a new tailor made piece is inserted and stitched by Metalock keys and screws. This special operation can be up-tower.





In-Situ Metalock Repair

Repairing broken, cracked or otherwise damaged cast parts always represents a great challenge as cast iron can only be welded to a limited extent. MAN PrimeServ On-site Recovery uses a special Metalock/Masterlock procedure as a viable alternative to welding that today is the preferred method in industry and marine shipping.

This procedure enables us to specialise in the cold repair of damaged industrial components made from cast iron, steel and aluminum. The Masterlock method is a cold-repair process that avoids the stress problems frequently associated with welding and, more importantly, maintains the original alignment, which lessens the requirement for re-machining following repair.

The Metalock International Association has developed and tested a new stainless key (MN555) to facilitate component repair at high temperatures of up to 550 degrees Celsius. The key is corrosion resistant and can also increase a repair’s return of strength.

The Metalock/Masterlock procedure offers many advantages and:

  • is a cold process that eliminates thermal stress and resultant component distortion
  • is an on-site repair that eliminates the need for disassembly and off-site transport
  • delivers a high pressure-tight seal that protects against oils and gases
  • minimises the downtime of valuable equipment
  • is recognised by classification societies
  • eliminates the need to purchase new, expensive cast-iron parts