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Sand Casting Services

Name: Sand Casting Services
Brand: Hansheng Automation (Dongguan) Co., Ltd.
SKU: 2191075115
Price: 15.00 USD
Availability: InStock

US$15.00 5 Pieces (MOQ)

Port:

Shenzhen, China

Payment Terms:

T/T, Western Union, Paypal

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Hansheng Automation (Dongguan) Co., Ltd.

Guangdong, China

Last Login Date:

May 08, 2026

Main Products:

Hollow Rotary Table, Cam Indexer, CNC Machining, CNC Milling & CNC Turning, Gear Skiving, Casting Parts, Harmonic Drive, Planetary Gearbox

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Product Description

Company Info

Basic Info.

Application

Machinery Parts

HS Code

84834090

Product Description

Hansheng Automation's sand casting services provide cost-effective manufacturing solutions for large and complex castings. With excellent design flexibility, diverse material options, and environmentally friendly processes, sand casting provides high-quality parts for a wide range of industrial applications.

What is Sand Casting?
Sand casting is a process of metal casting by making a casting mold from sand, by pouring molten metal into a sand mold to create a final product. In sand casting, the mold is made by compressing and casting sand around the model. When the model is removed, a cavity is left behind. Molten metal is injected into this cavity through a gating system and the molten metal is allowed to cool and harden. After the casting is solidified, the upper and lower sand boxes are separated and the casting is removed from the casting mold. Such a process is known as sand casting.

Features of Sand Casting Services

Strong Adaptability

Suitable for castings of various sizes and shapes, especially suitable for large and complex sand castings.

Low Cost

The sand casting process can achieve the production of complex parts at a lower cost.

Material Diversity

You can choose ductile iron, gray cast iron, stainless steel, copper alloy, aluminum alloy and other materials.

Flexible Surface Treatment

The roughness of the surface will be relatively high after sand casting, and the roughness can be improved by grinding and coating.

Easy To Modify

Sand molds are easy to reshape, and design modifications have little impact on tooling costs.

Disadvantages

Limitations

Low accuracy (tolerance ± 1.5 mm/m) and relatively high surface roughness (Ra 6-12 μm), suitable for scenarios with low surface requirements.

Low Production Efficiency

A single sand mold is used, not suitable for mass production.

Process of Sand Casting

The process of our sand casting services mainly includes the following steps, which are mold making, molding and core making, pouring, molding, and post-processing. I'll go into more detail about these processes below.

1.Mold Making
According to the casting drawings to make molds, used to form the cavity of the sand mold, the mold can be a wood, metal or plastic mold. The mold parting design needs to be divided along the maximum cross-section of the casting, which is convenient for demoulding after molding.

2.Sand Mold Preparation
Use silica sand, clay, water, and additives to prepare sand molds in a certain ratio.

3.Styling And Core Making
Styling is divided into two categories: manual (flexible, suitable for one-off pieces) and machine (high-pressure moulding machine or 3D printed sand mold). The manual molding method adopts the sand digging method or the loose block method, and the machine molding efficiency can be increased by 3-5 times. The core is formed through the core box, and the complex inner cavity needs to be combined with a sand core (such as a turbine blade cooling channel), and the sand core needs to be embedded with exhaust holes to avoid porosity defects. After modeling, the sand mold is dried (200-300°C for 6-12 hours) to increase strength.

4.Gating System Design
The gating system consists of outer gates, sprues, cross sprues, and inner sprues, and requires smooth transitions to reduce melt turbulence. The riser is designed in the hot joint area of the casting (e.g., at a thick-walled joint), and the top riser can reduce porosity by 30-50%. Air vents and chilled iron (used to adjust the solidification sequence and prevent deformation.)

5.Melting And Pouring
The melting is done using an electric furnace (environmental requirement) or an intermediate frequency furnace, and the temperature of the cast iron needs to reach 1400-1500°C, and the aluminum alloy needs to reach 680-750°C. The flow rate (0.5-1.5 kg/s for grey cast iron) should be controlled during pouring and the ladle should be preheated to 600-800°C to avoid temperature drop in molten metal. After pouring, it needs to be cooled to a stand, and the holding time of thick-walled parts is extended to 2-4 hours.

6.Shakeout And Cleanup
After cooling, the sand mold and the casting are separated by a vibrating shakeout machine, and the old sand is crushed and screened and recovered. The surface of the casting is cleaned of oxide scale and flash burrs are removed (roughness is reduced from Ra 12 μm to less than Ra 6 μm).

7.Inspection And Post-Processing
The castings after molding are subjected to X-ray flaw detection, surface treatment and dimensional measurement (CT8-CT10 class).

There are three main types of sand molds that we commonly use.

Sand Mold Type	Main Ingredients	Application Scenarios
Green Sand	Silica sand + clay + water	General purpose castings (e.g. engine blocks)
Resin sand mold	Silica sand + furan resin	High-precision parts (e.g. gears)
Water glass sand mold	Silica sand + water glass + CO₂ hardening	Steel castings (e.g. valves)

The difference between sand casting and other casting services

The core difference between Sand Casting Services and other casting services is that the mold used is a sand mold, which has a great advantage in cost, and I will analyze the difference between sand casting and other casting services for you through a number of comparison factors.

factor	Sand Casting	Die Casting	Lost Wax Casting
The material used in the mold	Sand molds are inexpensive and can be used disposably.	It is cheaper to use a sturdy metal mold or stamper for high-volume production.	Wax molds/ceramic shells (single use) are used, which require multi-layer dipping and high-temperature roasting.
Surface treatment	Due to the coarser surface finish (Ra 6-12 μm) due to the sand structure, additional finishing may be required.	High-quality, smooth surface (Ra 1-3 μm); No or minimal post-processing is required and additional textured surfaces are available.	The surface finish is Ra 3-6 μm, and the high-precision parts reduce post-processing.
Thickness of the chamber wall	It is suitable for parts with a wall thickness of ≥ 3 mm, and the thin wall is prone to defects such as cold insulation and insufficient pouring.	Thin-walled parts (0.5-3 mm) can be produced with high material utilization.	Supports complex thin-walled (0.5-5 mm) precision parts such as turbine blades.
Part complexity	It can handle complex and bulky shapes, but with thicker walls and less precision.	Suitable for precision construction with high dimensional stability (tolerance± 0.1 mm/m).	Expertise in complex hollow structures (e.g. jewelry, turbine blades) with tolerances ± 0.5 mm/m.
apply	It is commonly found in large industrial components, machinery, and buildings that do not have precise details.	It is used in the automotive, electronic and consumer goods fields where precision and surface quality are critical.	It is commonly used in the production of aerospace turbine blades, stainless steel joints for medical devices, and precision gears.
Production batches	Small to medium lot sizes (1-1000 pieces)	Extra-large quantities (> 100,000 pieces)	Small to medium to large batches (100-100,000 pieces)

Sand casting commonly used industries

With its advantages of low cost, strong adaptability, and the ability to produce large-size and complex cavity castings, sand casting is widely used in many industrial fields, especially in construction machinery, automobiles, power equipment and other scenarios.

industry	apply
Aerospace	Engine block, structural frame, transmission housing
Construction machinery	Excavator buckets, crane booms, track shoes
Car	Engine blocks, cylinder heads, transmission housings, motor housings, battery trays
Consumer electronics	Large appliance frames, heat exchanger housings, equipment housings
Power plant	Pump housings, valve bodies, wind turbine components, motor housings, compressor housings
Medical equipment	Equipment base, large diagnostic mechanical frame, durable stand
Communication equipment	Communication equipment shell, base station shell
Lighting solutions	Street lamp housings, lamp holders, outdoor lamp housings

Address: F4, No. 1, Lane 1, Xicheng Road, Zhangmutou Town, 523625, Dongguan, Guangdong, China

Business Type: Manufacturer/Factory

Business Range: Industrial Equipment & Components, Manufacturing & Processing Machinery, Packaging & Printing, Tools & Hardware

Management System Certification: ISO 9001

Main Products: Hollow Rotary Table, Cam Indexer, CNC Machining, CNC Milling & CNC Turning, Gear Skiving, Casting Parts, Harmonic Drive, Planetary Gearbox

Company Introduction: Hansheng Automation (Dongguan) Co., Ltd. is a esteemed manufacturer for high quality precision gearboxes and precision machined parts.

Hansheng Automation supplies the world with Cam Indexers, Planetary Gearboxes, Harmonic Drives, Hollow Rotary Actuators as well as manufacturing on demand gears, CNC machined parts and castings.

We serve customers with high-precision, reliable, and long-life transmission solutions among the industries of semiconductors, robots, bulk industrial product assembly lines, manufacturing and assembly automation lines, electronic and electrical production lines, electric light source manufacturing equipment, pharmaceutical machinery, tobacco machinery, food packaging machinery, filling and molding machinery, printing equipment. Our solutions help customers enhance equipment performance and production efficiency.

Core Products and Services

Precision Gearboxes:

Includes cam indexers, hollow rotary tables, planetary reducers, and harmonic reducers. Product accuracy is able to reach 10 arc seconds, low noise, long lifespan.

Widely used in robotic joints, visual inspection, container packaging, welding machinery, automotive parts manufacturing, electronic components, home appliance production, can manufacturing, precision machinery, machine tools, and aerospace technology. They are ideal precision transmission components for various automated equipment that require converting continuous operation into intermittent actions.

Precision Parts Manufacturing Service:

Precision Gears: With extensive design and manufacturing experience, we have served numerous equipment manufacturing companies. We can process gears with a minimum module of 0.1 and a maximum module of 5, achieving gear precision levels up to Grade 5 (ISO International Standard/GB Chinese Standard/DIN German Standard).

CNC Precision Machined Parts: Equipped with four- and five-axis machining centers, we offer customized, rapid prototyping, and mass production services for precision CNC machining. We can machine complex-shaped precision components with precision up to +/-0.005mm and surface roughness of Ra0.8.

Precision Castings: We provide one-stop services from mold design and manufacturing (including lost foam, wood molds, and aluminum molds), casting, precision casting, to precision machining, meeting customer demands for complex-shaped castings. Casting materials include cast iron, cast aluminum, cast copper, and cast steel, with single-piece weights ranging from 0.05kg to 1 ton. The dimensional accuracy of castings can reach +/-0.3mm, surface roughness up to Ra3.2, and machined surface precision up to +/-0.005mm with a surface roughness of Ra0.8.

Targeting global customers, covering fields such as precision machinery, robot reducers, robot body components, tobacco machinery, packaging machines, aerospace components, etc.

Company Advantages

Independent R&D: We have a highly experienced R&D team and advanced testing equipment, enabling continuous technological innovation and product iteration.

Precision Manufacturing: We utilize internationally advanced production equipment and testing instruments, strictly adhering to quality management systems to ensure product precision and reliability.

Customized Services: We offer personalized customization services tailored to customer needs, meeting special requirements for various application scenarios.

Service Team: With years of experience and accumulation, we have built a skilled technical team and an international business service team. We provide excellent technical support, business services, and international logistics solutions, with global reach.

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Sand Casting Services

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