Compare Metal Stitching to Welding

LOCK-N-STITCH is a unique and highly developed mechanical bonding process that is used to repair broken and damaged castings. It allows for replacement of missing or badly damaged sections of machinery.  The result is a repair stronger than the original design.  The principle has been used successfully with all types of equipment and in all areas of industry.  Since heat is not used, stresses are not introduced and post-repair machining is not necessary to correct misalignment and warping. Repairs can be made on-site without the necessity of major disassembly.

Metal Stitch Repair:

• Causes no distortion.  Since heat is not used, the properties of the parent metals are unchanged.

• Relieves locked-in stress and eliminates high stress areas by redistribution.

• Total penetration of repair.

• Requires little or no dismantling.

• Can be applied on machine surface with no re-machining necessary. In cases of complete breaks, by proper clamping almost exact tolerances can be held.

• Since no heat or open flame is used, the repair can be made in hazardous areas.

• Bonds to similar and dissimilar metals.

Fusion Welding or Brazing

• Causes warping and distortion.

• Introduces locked-in and concentrated stresses.

• Limited penetration of weld applied adjacent to already fatigued areas.

• Has to be dismantled when preheating or annealing is necessary.

• Has to be re-machined.

• Has to be performed in safe areas.

• Impossible to weld dissimilar metals.

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