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Resin bonded mold sand
Model No: #1

High-strength molten sand

The new high-strength molten sand developed by Tushun, with its more regular spherical surface and lower thermal expansion rate, will inject new vitality into the foundry industry.
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High-Strength Ceramic Sand 1#

Overview

High-Strength Ceramic Sand 1# is a fused, high-purity black sand specifically engineered for high-temperature and high-pressure casting applications. With excellent crush resistance, stable grain shape, and low thermal expansion, it is widely used in resin-bonded and no-bake molding systems, especially in ferrous and large structural castings.

Technical Specifications

  • Appearance: Black, round fused ceramic particles

  • Crush Resistance: High (ISO/API-compliant)

  • Thermal Expansion (1000 °C): ≤ 0.215%

  • Bulk Density:1.45-1.65 g/cm³

  • Refractoriness: ≥ 1800 °C

  • Hardness (Mohs): 8.0-9.0

  • Al₂O₃ Content: 45-55%

  • SiO₂ Content:30–50%

  • Fe2O3:≤3%

  • pH Value:Neutral

Detailed Description

As a leading low expansion ceramic sand supplier, we developed High-Strength Ceramic Sand 1# to meet the performance needs of modern foundries handling large steel or iron components. This High Strength sand offers exceptional grain integrity under compaction and thermal load, making it ideal for deep cavities and high-density cores.

Foundries using resin bonded mold sand systems appreciate its consistent grain roundness and smooth surface texture, which help reduce binder consumption and improve mold release. The media flows evenly in automated core shooters and maintains green strength during long hold times. When applied as High Strength sand, it prevents distortion, veining, and premature core failure in high-stress areas.

Because it’s manufactured by an experienced low expansion ceramic sand supplier, the material is batch-controlled, AFS-graded, and customizable to meet your tooling needs. In resin bonded mold sand workflows, it also improves shakeout performance and shortens cycle time, while its low LOI and consistent particle shape reduce gas evolution and improve casting quality.

Customers using our High Strength sand report better yield rates, lower rework costs, and easier sand reclamation. As a long-term low expansion ceramic sand supplier, we support OEM projects with technical backup and consistent global shipping.

Applications

  • Ferrous casting molds with deep or complex geometry

  • Heavy-duty cores in pumps, pipe fittings, and turbines

  • Cold-box and no-bake resin bonded mold sandsystems

  • Core blowing and 3D printing applications for steel and iron

Benefits

  • Extreme strength: Prevents collapse or cracking under compaction

  • Thermal control: Stable performance under repeated heat cycles

  • Binder-friendly: Reduces usage in resin bonded mold sandprocesses

  • Clean finish: Low burn-on and less post-processing

  • OEM support: Stable supply from a trusted low expansion ceramic sand supplier

FAQ 

Q1: What types of castings benefit most from High Strength sand?
A: It is ideal for large, high-pressure castings made from steel or ductile iron, where mold integrity and thermal resistance are critical.

Q2: How does it perform in resin bonded mold sand lines?
A: It provides excellent flowability, compaction, and shakeout in both cold-box and no-bake systems, especially in automated or robotic core rooms.

Q3: Why choose a low expansion ceramic sand supplier instead of buying imported zircon or chromite?
A: Our ceramic sand offers comparable thermal properties at a more stable and economical price point, with better recyclability and technical service.