Sand testing equipment is used in foundries and metallurgical industries to evaluate the properties of molding and core sands, ensuring the quality of castings. Here are the key types of sand testing equipment:
1. Sand Preparation & Mixing Equipment
– Sand Muller: Homogenizes sand mixtures (base sand, binders, additives).
– Sand Mixer: Ensures uniform distribution of additives.
2. Moisture Content Testing
– Moisture Tellers (Drying Ovens or Electronic Meters): Measure water content in sand.
– Infrared Moisture Analyzers: Provide quick moisture readings.
3. Strength Testing
– Universal Sand Strength Machine (Compression, Shear, Tensile, Transverse): Measures green/dry strength.
– Green Compression Tester: Evaluates mold hardness before drying.
4. Permeability Testing
– Permeability Meter: Determines how easily gases escape from molds.
– Digital Permeability Testers: Automated readings for accuracy.
5. Grain Fineness & Distribution
– Sieve Shaker & Sieves (AFS Grain Fineness Number): Classifies sand grain size.
– Laser Particle Analyzers: Advanced grain size distribution analysis.
6. Clay Content & Active Bentonite Testing
– Methylene Blue Clay Tester: Measures active clay content.
– Loss on Ignition (LOI) Furnace: Determines burn-off materials.
7. Compactibility & Flowability Testers
– Compactibility Tester: Checks sand’s ability to compact under pressure.
– Flow Cone Testers (For No-Bake Sands): Assesses flow characteristics.
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– Evaluates sand behavior under high temperatures.
9. Core Sand Testing
– Core Hardness Tester: Measures cured core strength.
– Core Gas Permeability Tester: Checks venting ability.
10. Specialized Testing
– pH & Conductivity Meters (For chemical binders).
– Ductility Testers (For resin-bonded sands).
Leading Manufacturers:
– Simpson Technologies (USA)
– Dietert Foundry Testing Equipment (USA)
– Ridsdale & Co (UK)
– KELSONS (India)
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