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Blackening or Phosphating of injection mold plates? [Thailand]

I want to do blackening or Phosphating on Injection Mold plates to avoid rust -- Material Orvar supreme.
Can you suggest what process is the best to avoid rust on plates without any dimensional distortion?

Paul Durai Ponnuswamy
mold manufacturing & proving - Bangkok, Thailand
March 3, 2010

Neither. If you need to avoid rust, plate them with electroless nickel. Excellent, uniform and affordable.

Guillermo Marrufo
Monterrey, NL, Mexico
March 17, 2010

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