Engines, Propulsion, Deck Equipement
Oil & Gas, Wind turbines
Refineries, Mining, Power Generation
Metalock Denmark is certified all 3 standards ISO 9001, ISO 14001 and
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The metalocking of cast iron has been a recognised method since 1938 and has saved multiple machine frames, pumps, presses and engines from scrapping. The key characteristic of the metalock process is that it involves no heat strain in its application.
PDF Information sheet: Metalock Repair
Using a drill jig, rows of blind holes are drilled perpendicular to the direction of the crack, each row to act as a key.
The intermediate partitions are removed with pneumatic chisel.
Metalock keys are driven into the openings and caulked.
Holes for Metalock screws are drilled along the crack
between the keys.
The screws are fitted so close together that they overlap.
Finally, the entire installation is caulked to ensure stability and pressure tightness.
Metal-stitching process of damaged engine frame. This type of repair is a life lasting repair.
The damaged area is removed and a new tailor made piece is inserted and stitched by Metalock keys and screws.
This special task is made in our workshop facilities but similar operations can be done on-site if required.
Repairing broken, cracked or otherwise damaged cast parts always represents a great challenge as cast iron can only be welded to a limited extent. Metalock Denmark 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 Metalock Denmark to specialise in the cold repair of damaged industrial components made from cast iron, steel and aluminium. The Masterlock method is a cold-repair process that avoids the stress problems frequently associated with welding and, 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:
eliminates the need to purchase new, expensive cast-iron parts