Green Sand Casting
Green Sand Casting Custom Manufacturing Services
Green sand casting is an efficient, cost-effective manufacturing process for producing low-to-high volume custom metal components. Utilizing a mixture of silica sand, clay, water, and organic additives, this method delivers reliable dimensional repeatability and high production rates for ferrous and non-ferrous alloys.
Operating under ISO 9001:2015 certified quality management systems, our facility operates automated and semi-automated green sand molding lines equipped to handle small brackets weighing a few kilograms up to heavy industrial housings. We partner with OEM engineering teams to review CAD models, optimize draft angles and parting lines, and transition prototypes into stable volume production.
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Molding Lines: Automated horizontal and vertical green sand molding lines featuring medium-frequency induction melting furnaces.
Flask Sizes: Ranging from 400 × 500 mm up to 1200 × 1000 mm.
Component Weight Range: 0.5 kg to 120 kg per piece.
Annual Capacity: Over 15,000 metric tons.
Core Making: Shell core and cold box core processes for complex internal geometries and undercuts.
Secondary Operations: In-house CNC machining (horizontal and vertical machining centers equipped with high-precision tool probes), shot blasting, heat treatment, and pressure testing.
Specifications
|
Parameter |
Technical Standard / Capability |
|
Gray Iron Grades |
ASTM A48 (Class 20, 25, 30, 35, 40) / DIN EN 1561 (GJL-150 to GJL-300) |
|
Ductile Iron Grades |
ASTM A536 (60-40-18, 65-45-12, 80-55-06) / DIN EN 1563 (GJS-400-15, GJS-500-7) |
|
Carbon & Alloy Steel |
ASTM A27, ASTM A216 WCB/WCC |
|
Dimensional Tolerance |
ISO 8062-3 (Tolerance Grades DCTG 11 to DCTG 13 for green sand) |
|
Surface Roughness |
Ra 12.5 μm to 25 μm (as-cast) |
|
Minimum Wall Thickness |
4 mm to 6 mm (depending on alloy and geometry) |
Typical Parts
Fluid Power
Pump volutes, valve bodies, actuator covers, and pipe fittings.
Agricultural Machinery
Gearbox housings, mounting brackets, wheel hubs, and implement linkages.
Commercial Vehicles
Axle components, differential carriers, brake drums, and suspension brackets.
Industrial Equipment
Electric motor frames, winch drums, compressor blocks, and structural counterweights.
Applications
Green sand casting serves OEMs operating in sectors requiring robust mechanical performance under dynamic loading. Common fields include heavy-duty agriculture, fluid handling systems, commercial trucking, construction machinery, and industrial automation equipment where tooling economy and material versatility are critical.
Our production workflow ensures metallurgical consistency and structural integrity from raw material to finished casting:
Tooling & Pattern Making: CAD/CAM data verification, metal or resin pattern fabrication, and gating system simulation via MAGMAsoft software.
Melting & Pouring: Induction furnace melting paired with optical emission spectrometer chemical tracking prior to pour.
Molding & Core Setting: Automated sand preparation, core placement, mold compaction, and clamping.
Shakeout & Cleaning: Automated shakeout, core sand removal, runner/riser removal via plasma cutting or sawing, and shot blasting for surface cleaning.
Machining & Finishing: CNC milling and turning on multi-axis machining centers to achieve critical mating dimensions.
Quality Control
Backed by ISO 9001:2015 certification, our quality assurance protocol prevents internal defects and dimensional non-conformance through:
Spectrometer Analysis
Direct reading optical emission spectrometer for chemical composition verification of every single heat.
Mechanical Testing
Tensile testing machines, Brinell/Rockwell hardness testers, and impact testing equipment.
Non-Destructive Testing (NDT)
Magnetic Particle Inspection (MPI) and Ultrasonic Testing (UT) performed per ASTM standards.
Dimensional Inspection
CMM (Coordinate Measuring Machine) and laser scanning utilized for First-Article Inspection (FAI) reports and full PPAP Level 3 documentation packages.
To receive a technical and commercial proposal within 24 hours, please provide the following files and details via our secure upload form or direct email:
2D Drawing: PDF format containing critical dimensions, tolerances, surface finish requirements, and material grade specifications.
3D CAD Model: STEP, IGES, or Parasolid format.
Project Volume: Estimated batch size, annual volume, and delivery schedule.
Target Requirements: Specification of any required secondary machining, pressure testing, coating, or third-party NDT certification.
Submit your package directly to our engineering team at: [Insert Email Address]
FAQ
Find professional green sand casting manufacturers and suppliers in China here. Please feel free to buy high quality green sand casting at competitive price from our factory. For customized service, contact us now.