What Is Water Glass Sand Casting

Water glass sand casting, 규산 나트륨 모래 주조라고도 함, 중대형 강철 주물을 생산하는 데 널리 사용되는 주조 공정입니다.. 이 과정에서, 물 유리 (sodium silicate) is used as a binder to bond the sand mold, providing good strength and dimensional stability.

Compared with traditional resin sand processes, water glass sand casting offers a good balance between cost efficiency and casting quality, making it suitable for many industrial applications.

This casting method is commonly used for components that require reliable mechanical properties and relatively complex structures, especially in projects that require custom metal casting service for industrial or railway equipment.

A detailed industrial process flowchart illustrating the complete production line of Water Glass Sand Casting (Sodium Silicate Process), from raw materials preparation and CO₂ hardening to pouring, shakeout, and final inspection. — Comprehensive Workflow of the Water Glass (규산나트륨) Sand Casting Process: This chart details every stage, highlighting our specialized CO₂ hardening technique and the closed-loop used sand reclamation system for sustainable production.

Our Water Glass Sand Casting Production Line

Our foundry operates a dedicated water glass sand casting production line capable of manufacturing a wide range of custom steel castings and providing reliable custom casting service for industrial applications.

The process begins with precise sand mixing, where silica sand is blended with sodium silicate binder. The mixed sand is then used for molding (cope and drag) and core making, both hardened efficiently with CO₂ gas to achieve excellent strength.

After hardening, a refractory coating is applied to the mold and core surfaces to enhance the final casting finish and prevent sand adhesion. The coated molds and cores are then assembled and closed, ready for pouring.

Melting is performed under strict control using advanced furnaces, and the molten metal is poured into the assembled molds. After solidification and cooling, the castings are shaken out to separate them from the sand.

The used sand is directed to a mechanical reclamation unit, where binder residues are removed, allowing the sand to be recycled back into the process — reducing waste and material costs.

그후, castings undergo cleaning (including shot blasting and removal of gates and risers) and precision machining to meet dimensional specifications. 모든 주물은 고객 요구 사항을 충족하는지 확인하기 위해 엄격한 최종 검사를 거칩니다..

Water Glass Sand Casting Production Line — **물 유리 모래 주조 생산 라인**

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