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Impeller

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Impeller

Industry:

Local Authorities-City Councils,

 Date:

October 2005,

Substrate:

Cast iron Impeller,

Products:

Chem-tect™ RB 300,

Environment:

Sewerage Treatment,

Challenge:

The profile of an old impeller had been ruined by corrosion and erosion. This is severely reducing pump performance and increasing operating costs and since a replacement impeller would suffer the same corrosion attack, the Client sought a cost effective and long lasting solution.

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Corroded impeller    Kevlar reinforcing    Machining to original dimensions

Chemcos Solution:

The internals of the impeller were badly corroded and required refurbishment as a replacement would take up to 12 weeks. The client required a fast turnaround. Therefore, the challenge was to refurbish and rebuild to original profile in as short a time as possible.

Scope:                               

  • RB 300 (AR) to rebuild surfaces
  • Kevlar to improve strength
  • RB 300 (AR) application to achieve desired thickness
  • Post cured at 80°C for 8 hours to improve chemical and abrasion resistance
  • Final machining to original dimension and tolerances using a PCD (poly carbonate diamond) tip.

Results:

With Chemco Australia’s application providing proven long term corrosion protection, many other components have been refurbished using similar methods both on site and within our fully equipped workshop.