Sand Casting

SIPX provides superior quality sand casting parts and components for a wide range of industries including automotive, food dairy, machinery, medical, plumbing, watering, mining, petrochemical, electrical, energy and others. Whether you want to produce medium or high quantities, nothing is more cost-effective than sand casting.

What is Sand Casting

Sand casting, also known as sand molded casting, is a metal casting process characterized by using sand as the mold material. The term “sand casting” can also refer to an object produced via the sand casting process. Sand castings are produced in specialized factories called foundries.

The result of centuries of development is that sand casting is the most versatile, and probably the most widely used, metal casting method. Over 60% of all metal castings are produced via sand casting process.

Sand casting is used to produce a wide variety of metal components with complex geometries. These parts can vary greatly in size and weight, ranging from a couple ounces to several tons. Some smaller sand cast parts include components as gears, pulleys, crankshafts, connecting rods, and propellers. Larger applications include housings for large equipment and heavy machine bases. Sand casting is also common in producing automobile components, such as engine blocks, engine manifolds, cylinder heads, and transmission cases.

process-of-sand-casting

Why Choose SIPX

With over 10 years of experience, Sipx is well versed in this field. Yes, you are dealing with masters. You can trust us with your needs and expectations.

You will save 20-30% of the cost because of our excellent production capacity. Furthermore, we only insist on making high-quality casting products.

  • Rapid Prototyping
  • One-Stop Services Supplier, On-demand manufacturing
  • ISO16949 Certificated
  • Strict Quality Control System

    *Your details will be kept strictly confidential with us.

    How Are Sand Castings Made?

    creat the mold

    1. Create The Mold

    Form a sand mold by packing sand into each half of a container that includes a pattern of your desired finished part. Remove the pattern. The cavity that will form the casting remains.

    prepare the sand mold

    2. Prepare the Mold

    The surface is first lubricated to help with the removal of the casting. The mold halves are then closed and securely clamped together to prevent the leakage of any material.

    pour the molten metal into the mold cavity

    3. Pour Molten Metal into Mold Cavity

    Pour molten metal into the mold through the “gating system.”  This image shows pouring molten aluminum into the mold.

    allow it to cool

    4. Allow Metal to Cool

    The molten metal poured into the mold will begin to cool and solidify, known as the metal solidification process. The mold is open once the proper cooling time has elapsed.

    Remove Cast from Mold

    5. Remove Cast from Mold

    Break the sand mold apart and remove the hardened casting. A vibrating machine can shake the sand and casting out of the flask. Then a shot blasting is needed to remove the remaining sand.

    Trim Excess Metal From Casting

    6. Trim Excess Metal

    This excess material is trimmed from the casting either manually or using a trimming press. The scrap material that results from the trimming is often reused in the sand casting process.

    7. Finishing

    Depending on the intended use of the final product, the casting may be polished or finished to provide a functional or aesthetic surface for its final application.

    Advantages of Sand Casting

    If you are reading this discussion on sand casting processes, you are likely trying to get a better idea of what method of prototype casting would be best for the product that you have in mind. Prototype casting using a sand casting foundry is best when you might need:

    • Design Flexibility in Size, Weight, Shape – Sand casting is excellent for prototypes and jobs that might require flexibility in both size and weight. The only size and weight restrictions are the amounts of materials available and the size of the foundry.
    • Low Minimum Quantity – Because the tooling cost can be minimal, sand casting may be appropriate for a single piece run. Alternatively, there are automotive components that are produced using this process, so it may also be used in high volume applications.
    • Large Material Choice – Another benefit of sand casting is the ability to use a number of different casting materials. As long as the alloy can be melted, it can be used to create products with sand casting.
    • Low-Cost Tooling – Tooling and equipment costs are generally much lower than the costs associated with other metal manufacturing processes. This makes sand casting one of the cheapest methods.
    • Short Lead Times – Sand casting allows for quick turnarounds in production — making it one of the fastest forms of casting.

    Materials and Secondary Operations of Sand Casting We Offer

    • Materials can be aluminum alloy, ductile iron, brass alloy, gray iron etc.
    • Grinding, drilling, tapping, painting, shot blasting
    • High precision machining
    • Heat treatment
    • Assembly, packaging