Industrial Sand
Casting Process
Leveraging automated green sand molding and resin-bonded no-bake molding lines to manufacture highly complex casting geometries for global OEMs.
Molding Parameters
- Molding: Green Sand & No-Bake
- Tolerances: ISO 8062 DCTG 8-10
- Simulation: MAGMA/AutoCAST
- Cleanliness: Sa 2.5 Shot Blasting
The Automated Sand Casting Flow
Sand casting remains the most versatile and cost-effective method for producing complex metal components. At Asian Technocast LLP, we combine traditional craftsmanship with modern automated control systems to achieve unmatched consistency and surface finish.
Our process begins with 3D CAD modeling and solidification simulation. Patterns are CNC machined to precise dimensions, incorporating shrinkage allowances. The sand molds are prepared using silica sand mixed with bentonite clay and water (green sand) or chemical binders (no-bake). Molten iron is poured into the mold cavity under controlled temperature, followed by cooling, shakeout, shot-blasting, and final CNC machining.
CAD-Tooling Integration
Direct transfer from digital CAD data to CNC pattern machining.
Filtration Technology
Ceramic foam filters eliminate non-metallic inclusions and defects.
Sand Casting Process Stages
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1. Pattern Development & Simulation
3D CAD design and AutoCAST simulation to optimize riser and gating systems.
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2. Mold & Core Preparation
Green sand or resin-bonded sand is compacted around the pattern. Shell or cold-box cores are placed to form internal cavities.
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3. Melting & Pouring
Induction melting with spectrometer analysis. Pouring temperature is tightly controlled between 1380°C and 1420°C.
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4. Fettling, Blasting & Inspection
Castings are separated from sand, risers are cut, and surfaces are shot-blasted. 100% visual and dimensional inspection is performed.
Sand Casting Questions Answered
We utilize two primary sand casting processes: Green Sand Molding (for high-volume, automated production of small-to-medium parts) and No-Bake / Resin-Bonded Sand Molding (for medium-to-large, highly detailed castings requiring superior surface finish).
Our sand casting process achieves ISO 8062-3 Grade DCTG 8 to DCTG 10 tolerances. For tighter requirements, we perform precision machining in our CNC workshop.
We use automatic sand preparation plants that continuously monitor moisture content, clay active levels, and green compressive strength. Liquid metal is poured through specialized ceramic foam filters to trap slag and oxides.
We manufacture pattern tooling from high-density polyurethane (for prototype and medium runs) and aluminum or steel (for high-volume automated molding lines) to ensure long-term dimensional stability.
Yes, we use advanced casting simulation software to model liquid metal flow and solidification patterns. This allows our engineers to optimize riser and gate layouts, eliminating shrinkage porosity before cutting tooling.
Ready to Discuss Your
Casting Requirement?
Submit your drawings, CAD files, or technical specifications. Our engineering team reviews parting lines, gating flow paths, and metallurgical tolerances to return a comprehensive manufacturing proposal.
CAD & Drawing Review
Gating simulation feedback included with all technical proposals.
Material Grade Consultation
Expert support selecting optimal Gray or Spheroidal S.G. Iron grades.
Fast Technical Response
Full engineering-backed quotes delivered within 48 hours.