Reconditioning Process

Work Station After Refurbishing

Initial Evaluation

Before we purchase a previously owned EDM machine, one of our trained engineers thoroughly inspects the machine tool, control, power supply, filtration system and chilling unit. Upon completing this inspection, we can determine if the EDM machine meets our purchasing requirements. Our engineer then prepares the EDM machine to be shipped to our Brighton, Michigan facility for reconditioning.

Disassembly

After the EDM machine arrives at our facility, it is placed under power to check for any damage during transit. Then the EDM machine, worktable area, upper and lower head assemblies, control, dielectric tank, and chiller are disassembled for cleaning.

Start of Disassembly

Disassembled Sodick Machine

Cleaning

During this step, our engineers and their helpers thoroughly clean every component of the EDM machine. Worktables are usually sandblasted, ground, painted and re-qualified. On submersible models, the tank assembly is stripped, repainted and all seals are replaced. The dielectric tank compartments are acid washed to remove hard sediments and pump seals are replaced when necessary. All components in the control and chiller are cleaned free of dirt and grime and any filter materials are replaced. Exterior painted surfaces of all components will be repainted when needed.

Testing of Components

After the components are cleaned, our engineers thoroughly test each part. If any component is found defective or operating below recommended manufacturer specifications, it is replaced.

Before Disassembly

After Disassembly and Replacement

Reassembly

Each EDM machine is reassembled to manufacturer specifications and equipped with new consumable items. These include such items as guides, energizing pins, flush nozzles, filters, and resin.

Performance Tests

In this final step, our team places the machine under power and prepares it to pass the following tests:

• Backlash Test
• Accuracy Test Cut
• Taper Test Cut
• Endurance Cut
• Metal Removal Rates Test Cut or "Speed Cut"

Before Reconditioning

After Reconditioning

Our goal is to provide our customers with the highest quality reconditioned Sodick, Japax and KTC EDM Machines. Under no circumstances will an EDM machine leave our facility unless it not only meets or exceeds manufacturer's specifications, but also the strict standards that McWilliams Sales & Service enforces.