Kerphalite KF

High performance sand associating low thermal expansion and high refractoriness

 Kerphalite™ KF is the ideal solution for core making. It brings outstanding results for massive iron casting until 30t and until 3t for steel. The product matches all foundry requirements.

CHEMICAL & MINERAL COMPOSITION

  • Al2O3
  • Kerphalite™ KF
  • Al2O3
  • 60,8
  • SiO2
  • 38,1
  • Fe2O3
  • 0,45
  • Na2O
  • 0,10

TYPICAL PARTICLE SIZE DISTRIBUTION

  • KF 100/400
  • AFS
  • KF 100/400
  • 60
  • KF 200/400
  • 50
  • KF 100/300
  • 70
  • KF 100/200
  • 100

KEY PROPERTIES

  • High refractoriness: resistance to high temperature (> 1700°C) without melting or sintering
  • Low thermal expansion to prevent veining and finning
  • Time saving: allows reducting the coating
  • Suitable for all organic binders with total compatibility with silica sand

TEST RESULTS

Heating microscope

Heating microscope

Dilatation quartz KF mullite beads

Dilatation quartz KF mullite beads

CASE STUDY

TEST CONDITIONS

Metal/Alloys                  Grey Iron

Pouring T°                          1307°C

Casting weight                       70kg

Coating                      Water based

logo-ariotti

TEST CONCLUSIONS

1 No veining with Kersand & Kerphalite KF vs new silica sands

2 Kerphalite KF performing well even without coating

3 Good results (no veining) with blended Kerphalite KF and silica sand

Kerphalite KF foundry piece, realized at Ariotti foundry, Italy