Provider of specialty maintainence services & products since 1981.
 
 
Metal Stitching

NESL is a leader in cold repairing of cracked or fractured castings by metal stitching process which holds strong when welding fails. NICCO enjoys 'technology collaboration' from Denmark to serve the Indian market.


Metal Stitching Advantages

  • Permanent repairs of cracks and fractures.
  • In-situ repair.
  • No workplace distortion due to cold process.
  • Restoration to original strength of damaged part.
  • Gas / liquid proof repair.
  • No need for extensive re-machining.
  • Low restoration time.

Application Range

  • Mining equipment
  • Gear box housing
  • Bed plate frame
  • Cylinder heads
  • Pump casings
  • Engine block
  • Forging hammer
  • Rings
  • Piston crown
  • Compressor cylinder
  • Lathes/Presses
  • Milling machines
  • Generators
  • Loco heads
  • C.I. Equipment

The Process

  • Identify cracks
  • Drill holes across crack length
    at measured intervals
  • Special alloy formed keys are inserted
  • Taper- threaded bolts are placed in
    the cracks in a leak proof manner

 

Unique Masterlock Technique

  • Ideal for "extra thick" broken / cracked / fractured casting.
  • Clamps are used to bring parts together in original position.
  • A rectangular hole is drilled across damaged portion.
  • A large rectangular block of special material - the master lock - is inserted.
  • Locking pins along the side of master lock provide a tight, secure repair.
 

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