Industries We Serve

• Steel Castings
• Nickel Based Alloy Castings
• Carbon Steel Castings
• Manganese Steel Castings
• Ni-Hard Castings
• Hi-Chrome Castings
• Cast Iron Castings
• Non-Ferrous
• Die Castings

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Color Changing Coatings
Color Changing Mould & Core Coatings

Salient features of Color change coatings are -

  • To eliminate all moisture related defects
  • To identify poor sand compaction in a core or mould. [as these areas will absorb more moisture from coating and will take longer time to dry]
  • To optimize on cost of drying – Avoid over heating by oven / torch
  • Avoid over dilution of coating as color of coating will fade
  • Coating will take more time to change color due to higher moisture content
  • Easy to apply multiple coats as Pink color coating will be applied on dried yellow coating
  • Applicator knows areas where multiple coats are applied
  • Reduces production cycle time
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Refracote-256CC Zircon Solvent based yellow colored coating, suitable for Sodium-Silicate / Alpha Set Resin Sand System. Changes color from Yellow to Orange on ignition.
Refracote-400IPCC Zircon/Solvent based yellow colored coating, suitable for Sodium-Silicate / Alpha Set Resin Sand System. Changes color from Yellow to Orange on ignition for heavier casting section thickness.
Refracote-31MCC Magnesite /Solvent based yellow colored coating, suitable for Manganese Steel Castings. Changes color from Yellow to Red on ignition.
Refracote-555XLCC Zircon/Water based yellow colored coating, suitable for Phenolic Acid cured & Furan system. Changes color from Yellow to pink on drying.
Refracote-444XLCC Zircon/Water based pink colored coating, suitable for Shell Sand (Hot Box), Cold Box, Alkyd Resin, Cement Molasses, Cement Dextrose.. Changes color from Pink to Yellow on drying.
Refracote-300CC [A] & [B] Refractory based Pink colored coating in two parts for centrifugal steel castings. Changes color from pink to yellow on drying.
Refracote-200CC [A] & [B] Refractory based Pink colored coating in two parts for centrifugal Cast Iron pipe castings. Changes color from pink to yellow on drying.
Refracote-11RACC Refractory/Solvent based coatings for aluminum-sand castings. Changes color from purple to yellow on ignition.
Zircocote-100FXLCC Zircon / Water based color changing coating for permanent molds. Changes color from yellow to pink on drying.
Refracote-500FCC Ready to use Refractory / Water based color changing coating for cold box / pep-set socket hub cores. Changes color from Pink to Yellow [Cold Box] & Yellow to Pink for Pep-set cores on drying.
 
Innovative Color Changing Refractory Coatings

It is a well know fact that the Foundry Coatings are widely used to improve the surface casting finish and to achieve the best cosmetic look of the castings. But at the same time we all know that the best of the Foundry coating can never achieve this on a bad core or moulds. A conventional foundry using Sodium silicate CO2 gassed binder system uses mostly solvent based refractory coatings. In view of improving productivity, castings quality, to reduce rejection %, to have cleaner environment in the foundry, all modern foundries are shifting to modern resin systems such as phenolic ester cured, cold box resins, shell sand (Hot-Box), Furan Resin, Alpha set etc. Most of these sand resin systems whether for moulds or cores utilizes water based coatings to avoid casting defects such as metal penetration, sand erosion, veining etc.

Innovative Color Changing Refractory CoatingsChallenges before a Foundryman

  • Complete de-hydration of coating
  • Drying Oven parameters working efficiently

Above process is critical as wet coatings results into serious casting defects

  • Scabbing
  • Metal penetration
  • Blowholes
  • Surface Porosity

Foundryman needs visual confirmation of complete drying of coating

  • To eliminate all moisture related defects
  • To identify poor sand compaction in a core or mould [as these areas will absorb more moisture from coating and will take longer time to dry]
  • To optimize on cost of drying Avoid over heating by oven/torch
  • Avoid over dilution of coating as color of coating will fade
  • Coating will take more time to change color due to higher moisture content
  • Easy to apply multiple coats as Pink color coating will be applied on dried yellow coating
 


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