Green sand molding machines are among the most widely used equipment in the foundry industry. The types of castings they produce mainly include the following categories:
I. By Material Type
Iron Castings: The predominant application, covering materials such as gray iron and ductile iron. Particularly suitable for producing small-to-medium parts like automotive engine blocks, brake drums, and transmission housings.
Steel Castings: Typically applicable for small steel castings weighing ≤100 kg, such as mechanical fittings and connectors.
Non-Ferrous Alloy Castings: Including copper alloys (e.g., valves, bearing seats) and aluminum alloys (e.g., lightweight housings).
II. By Structural Features
Thin-Walled Castings: Owing to the excellent fluidity of green sand, this process is especially suited for complex thin-walled structures with 3–15 mm wall thickness, such as automotive hubs and hydraulic valve bodies.
Small-to-Medium Structural Parts: Typically weighing ≤500 kg, including pipe fittings, flanges, and fire hydrant bodies.
Castings with Moderate Surface Quality Requirements: Surface finish can be improved and burn-on defects reduced by optimizing sand formulations (e.g., adding coal dust or adjusting bentonite ratios).
III. Key Application Fields
Automotive Manufacturing: Accounts for >60% of green sand castings, used for mass production of engine components, chassis parts, etc.
General Machinery: Pump valves, agricultural machinery parts, pipe connectors, etc.
Basic Industrial Equipment: Small gearboxes, bearing housings, hydraulic components, etc.
Technical Limitations to Note:
Unsuitable for Large/Thick-Walled Castings: Limited mold rigidity may cause defects like sand expansion and gas porosity during heavy-section pouring.
Restricted in High-Precision Applications: Dimensional accuracy and surface roughness (typically Ra 25–100 μm) are inferior compared to resin sand processes.
Recent technological advancements—such as high-pressure molding and static pressure compaction—have significantly improved casting qualification rates and batch consistency. This continues to support scaled manufacturing demands in sectors like automotive components.
Quanzhou Juneng Machinery Co.,Ltd. is a subsidiary of Shengda Machinery Co.,Ltd. specializing in casting equipment.A high-tech R&D enterprise that has long been engaged in the development and production of casting equipment, automatic molding machines,and casting assembly lines.
If you need a Green sand molding machines, you can contact us through the following contact information:
Sales Manager : zoe
E-mail : zoe@junengmachine.com
Telephone : +86 13030998585
Post time: Jul-23-2025