Castings: Green Sand Properties

Green Sand Properties is an introduction to the basic terminology and methodology applied to green sand systems. Presented in THORS’ highly visual and interactive learning format, this course equips foundry employees with a more robust and comprehensive understanding of the physical, chemical, and mechanical properties of foundry grade green sand.

Learning Objectives

  • Understand some of the basic characteristics of green sand.
  • Differentiate between the various green sand ingredients.
  • Recall the system used to classify sand distribution.
  • Identify the common properties associated with green sand systems.
Course Length: 1.5 HRS

Table of Contents

Green Sand Characteristics

  • Sand Mining
  • Green Sand Ingredients
  • Sand Types
    • Silica Sands
    • Specialty Sands
  • Sand Size
  • Sand Size Distribution
  • Sand Shapes
    • Angular Sand
    • Sub-Angular Sand
    • Round (Spherical) Sand
    • Compound Sand
  • Types of Additives
    • Carbons
    • Cellulose
    • Cereals
  • Types of Bentonite
  • Effects of Moisture

Measured and Derived Properties

  • Measured Properties
    • AFS Clay
    • Compactability
    • Dry Compression Strength
    • Friability
    • Green Compression Strength
    • Green Tensile Strength
    • Hot Compression Strength
    • Loss on Ignition (LOI)
    • Methylene Blue (MB) Clay
    • Moisture
    • Mold Hardness
    • Permeability
    • Refractoriness
    • Thermal Expansion
    • Size Distribution
    • Specimen Weight
    • Wet Tensile Strength
  • Derived Properties
    • Available Bond
    • Working Bond
    • Mulling Efficiency

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