Sand casting has strong adaptability and controllable cost. It is one of the most widely used casting processes. QD has focused on sand casting for many years. We have mastered the core technology. From large mechanical structural parts to precision fluid equipment components, we can efficiently deliver high-quality castings.
What is sand casting?
The core steps of sand casting include:
- Make a mold (usually a metal mold) according to the shape of the casting.
- Use molding sand (quartz sand and other materials mixed with a binder) to make a sand mold.
- Pour the molten metal into the sand mold cavity according to the process requirements.
- After the metal cools and solidifies, remove the sand mold.
- Perform subsequent treatments such as cleaning and polishing. Finally, the casting is obtained.
Sand casting has the following characteristics:
- Wide applicability: It can be adapted to a variety of metal materials. From cast iron to carbon steel and copper alloy, it can be stably molded.
- Relatively low cost: Sand mold materials are widely available and recyclable. The mold making cost is lower than other casting processes.
- Advantages of large and complex parts: It can produce castings with large volume and weight. It is suitable for parts with complex shapes and irregular structures.
- Strong flexibility: Both small batch customization and mass production can be taken into account. Fast response to product iterations.
Suitable casting types for sand casting
The properties of sand casting make it excel in the following casting types:
| Casting Type | Core Features | Application Scenario |
| Engineering machinery structural parts | Large size. High load-bearing capacity requirements. Mostly irregular shapes | Excavator chassis parts, loader boom |
| Key parts of agricultural machinery | Need to adapt to complex working conditions. Highly sensitive to cost | Tractor gearbox housing, harvester transmission parts |
| Fluid equipment housing | Sealing performance must be ensured. The structure often contains cavities or channels | Valve housing, pump body, large pipe fittings |
Common materials for sand casting
Sand casting has strong compatibility with metal materials. The most representative ones include:
| Material Type | Performance characteristics | Typical Applications |
| Gray cast iron | Good wear resistance, excellent shock absorption, low cost | Machine tool base, agricultural machinery gearbox housing |
| Ductile Iron | Balance of strength and toughness, close to the performance of steel | Engineering machinery bracket, pump body |
| Carbon Steel | High strength and good weldability | Large gear blanks and structural parts |
QD’s sand casting expertise
In the field of sand casting, QD has differentiated core competitiveness.
Automated production guarantees efficiency and cost: QD’s automated sand casting production line realizes intelligent operation of key links such as sand processing and pouring control. It greatly improves production efficiency. It reduces cost losses caused by human errors. It allows customers to enjoy more competitive prices while obtaining stable quality.
Accumulated experience strengthens precision and quality: More than 20 years of sand casting practice. QD’s control over process details has reached the industry’s leading level. From the proportion of mold sand to the control of pouring temperature, every link pursues extreme precision. The castings it produces have higher dimensional stability. Fewer appearance defects. Reduce the rework rate of customers’ subsequent processing. Indirectly reduce the overall production cost.
Capacity and flexibility guarantee delivery: Mature production system and flexible production scheduling capabilities. QD can quickly respond to customer order needs. Whether it is urgent order replenishment or batch production, it can provide stable delivery guarantee.
Full-process technical support improves cooperation efficiency: QD’s technical team provides professional advice based on its rich experience. It helps customers optimize casting structure and select suitable materials. It makes the product manufacturable from the beginning of design and shortens the R&D cycle.
QD Sand Casting Products Industry Applications and Examples
QD’s sand casting products cover a wide range of industrial fields. The following are typical application categories:
Agricultural machinery field
Focus on adapting the core components of various agricultural machinery and equipment. For example, QD produces tractor gearbox housing sand castings.
Made of ductile iron. Takes into account both strength and shock absorption. Adapts to various types of tractors. It can also produce harvester transmission gearbox parts, etc.
Engineering machinery field
Focus on large structural parts and load-bearing components, such as the sand castings of excavator counterweight blocks produced by QD.
Ensure the balance of equipment operation through precise weight control. QD can also produce loader brackets, etc., made of carbon steel. Meet the needs of high-intensity operations.
Fluid equipment field
We specialize in fluid control parts with high sealing performance requirements. For example, QD produces valve housing sand castings.
Made of gray cast iron or ductile iron. High inner wall smoothness. Ensure smooth flow of media. We can also produce pump body parts, etc. Strict dimensional control ensures the matching accuracy with the impeller.
QD Sand Casting Quality Inspection Standard
QD ensures product reliability through a multi-dimensional testing system:
- Dimensional accuracy inspection: Combine advanced testing equipment with experience to ensure that the key dimensions of the casting meet the design requirements.
- Material performance test: Test the hardness, tensile strength and other indicators of the casting. Verify that the material performance meets the standards.
- Non-destructive testing: Use non-destructive testing technology for important load-bearing parts. Check for potential internal defects;
- Appearance and sealing inspection: Ensure that there are no cracks or pores on the surface through visual and pressure tests. The sealing surface meets the use standards.
QD strictly follows the internal quality control system. Every sand casting can withstand the rigorous test of industrial scenes. Choose QD. Choose a reliable partner.
