Cast Iron Repair > FAQ's

Why use Metal Locking instead of welding?

Metal Locking Procedure

  • Leaves machine surface true and unwarped
  • Readily machineable across area of repair
  • No pre-heating or stress relief necessary
  • Cold repair presents no fire hazard in restricted areas
  • Dissimilar metals readily joined
  • Eliminates high stress concentration by re-distributing such stress
  • Ductility of high nickel locks used renders area more shock resistant and
    provides dampening effect
  • High nickel content in locking material makes repair resistant to chemical
    corrosion and acceptable for food products

Metal Locking procedure


Welding Procedure

  • Causes warpage and misalignment and often damages machined surface
  • Machining often difficult, sometimes impossible, at fusion area
  • Pre-heat and post repair stress relief usually necessary
  • Involves fire hazard
  • Difficult to weld dissimilar metals
  • Introduces stresses and hard spots particularly at fusion area
  • Causes brittleness, lowers shock resistance and dampening effect

Full welding services provided

What Industries do we serve?

                                                         Industries Served


Construction Equipment

Engine Rebuild & Repair

Food Processing & Milling



Gas Transmission

Injection Molding

Machine Tool Industry

Manufacturing - General

Material Handling

Metal Working


Paper Industry

Power Generation

Printing Equipment



Steel making



Wastewater & Sewer Authorities

Stamping Industry

Pharmaceuticals industry

A final word about the process of 'cold' repair:
It must be emphasized that we do not imply that this always is a substitute for the welding procedure, particularly in steel. Certainly welding has its place, but it does approach its limitations in the field of cast iron.

What specific items do we repair and/or rebuild?

  • Industrial Components - gears (including worn or broken teeth), flywheels, clutches, shafts, rollers, crankshafts, rams, gibs, ways, pitmans, paddles, couplers, etc.
  • Compressors - frames, pistons, cylinders and heads
  • Pumps - water, steam, gas, oil, and air
  • Engines - blocks from automotive to marine to locomotive, cylinder heads, transmission housings and gear boxes
  • Manipulation - forklift; boom and support repairs (bent or broken), crane wheels and gearboxes

How long does a Metal Locking repair last?
Metal Locking repairs are permanent. Proper design and application assure that the strength of the repair will meet or exceed the original operating conditions.

What information do I need to supply in order to receive a quotation or estimate?
For a ballpark estimate, digital photographs and phone correspondence are typically sufficient. If the inquiry relates to an on-site repair, we will need a physical address so that we may estimate travel expenses. When digital photographs are not available, faxed drawings may suffice.

Is there any cost associated with a quotation?
Typically there is no cost associated unless an inspection visit is required. At that time we will ask to be compensated for our travel expenses only.