Equipment Rebuilding & Refurbishing

NFM/Welding Engineers, Inc. is world-renowned for its re-engineering and refurbishing of extrusion equipment from any OEM. The professionals at NFM can custom-design equipment and machine components to refurbish and upgrade nonfunctional or outdated processing machinery, often saving you valuable time and money.

NFM offers the following machine rebuilding options:

• Complete Machine Rebuild
• Component Rebuild – Feedsections, Feed Door Assemblies, Barrels, Feedscrews, etc.
• Gearbox Evaluation & Repair
• Control Upgrades & Auxiliary Integration

Keeping your extrusion equipment in prime working condition is crucial to your productivity and profitability.

Below are just a few examples of rejuvenating well-used equipment. Use the SLIDER function to view before and after comparisons.

4.5″ Rubber Extruder Rebuild:

• Complete disassembly & inspection
• Rebuilt Gearbox
  • All new bearings and seals
  • Gearbox run-in test
• New barrel assembly
  • 4140 w/ bimetallic inlay
• Rebuilt feedsection w/ new power feed roll assembly
• New motor coupling assembly
• New feedscrew
  • 4140 w/ nickel+chrome flight lands
• Paint & Reassemble
• Electrical & cooling check-out

4.5″ Plastic Extruder Rebuild:

• Complete disassembly & inspection
• New barrel assembly
• Rebuilt feedscrew
• Rebuilt gearbox
• New Control Cabinet & Control System
• Paint & Reassemble
• Electrical & cooling check-out

24″ Barrel Rebuild:

• Sandblast exterior, water flow test & inspect
• Remove worn bimetallic liner
• Converted from O-Ring to Welded/Interference Fit Liner
• Machine new end rings
• Bore to accept new liner
• Installed new interference-fit bimetallic liner
• Machined for counterbores and registers
• Water pressure tested
• Cleaned & painted

24″ Discharge Barrel & Breech Lock:

• Sandblast exterior, water flow test & inspect
• Disassemble breech lock and remove worn liner
• Grind ID and repair tapped holes
• Installed new nickel-boron liner
• Installed new bearing pads and shims
• Welded end flange counterbores
• Installed new hinge bushings
• Machined additional o-ring grooves for improved seal
• Machined counterbore & register
• Recut die seat on die holder
• Drilled all new locating dowels
• Water pressure tested
• Cleaned & painted

300mm Twin Screw Barrel Re-HIP

• Originally Nitrided Bores
• Honed Barrel Bores
• HIP