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RB 300 – Sea Water Volute

chemco-marine.jpg

RB 300 – Sea Water Volute

Industry:           

HVAC,

 

Date:

March 2006,

 

Substrate:

Admiralty bronze 200/200,

 

Products:

Chem-tect™ RB 300 – Glassflake filled vinyl ester,

Ceram-chem™ RP 500 – Ceramic filled epoxy designed to improve lumber flow,

 

Environment:

Ambient Sea Water,

 

Challenge:

Original pumps were suffering severe corrosion and cavitation.

 

HVAC 1 photo 1
After masking & abrasive blasting
HVAC 1 photo 2
Re-mask & coating application
HVAC 1 photo 3
Eye of the impeller was treated using Kevlar, RB 300 & RP 500
HVAC 1 photo 4
After external coating application

 

Chemco Australia’s Solution: 

We recommended the use of RB 300 series @ 1200μm nominal thickness and top coat with 2 coats of RP 500 @ 300μm.

 

Scope:

  • Pre machine critical dimensions
  • Abrasive blast to ISO 8501-1 cleanliness standard with a minimum 75μm profile.
  • Mask and protect all area not to be coated
  • Application of 2 coats of RB 300 series
  • Application of RP 500 in two coats to improve fluid efficiency
  • Post machine to allow re-assembly
  • Balance impeller as required

 

Results:

Some engineering changes were made to the strainer system prior to the installation of these 3 pumps. Coupled with our coating system, these pumps can now expect long term protection – with minimal maintenance. Tube sheets, pipe-work and many other components have been protected using similar methods both on site and within our fully equipped workshop located in Wollongong.

 

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