Production

  1. Home
  2. Products
  3. Production

Production Shree Technocast

Sand casting is an ideal method for crafting individual pieces and managing small to medium production runs. When utilizing ductile iron for sand casting, even intricate castings can be efficiently and precisely manufactured. What sets us apart is our use of natural sand rather than synthetic alternatives, leading to smoother surfaces, exceptional dimensional accuracy, and consistent reproducibility.

Sand casting continues to be an economical and highly efficient method in metal casting. This process utilizes sand as the molding material to fabricate intricate metal components and customized designs. Notably, the sand molds are disposable after use, making it a versatile technique that can be applied to virtually any metal alloy, resulting in a diverse range of custom parts with complex shapes. Sand casting can produce components with weights ranging from less than a pound to several tons.

Process of Sand Casting

Creating intricate design patterns is a nuanced endeavor that demands specialized expertise. Our technical team possesses the necessary skills to craft reusable patterns prior to mold production, an approach that significantly aids in meticulous mold and product planning. Typically, these new patterns are engineered to accommodate thermal contraction throughout the sand casting process.

Patterns crafted from materials such as wood, resin (plastic), or aluminum play a pivotal role in the casting process. The foundation of exceptional components begins with a proficient and seasoned casting pattern maker. Our team of adept pattern makers specializes in tailoring custom patterns that precisely align with your specifications.

Preparation is vital as we get ready for the pouring of molten metal once the sand casting mold is in place. To facilitate the smooth extraction of the casting, the surface of the mold cavity is lubricated. The cores are carefully positioned, and the mold halves are sealed and firmly secured together. Maintaining a secure closure of the mold halves is crucial to prevent any material loss. The gating and riser features are instrumental in ensuring that the molten metal alloy can completely occupy the mold cavities before solidification begins, leaving no intricate details hollow or partially formed.

The process of melting is indispensable in the manufacturing of numerous superalloy and intricate alloy castings, making their production significantly challenging or even unattainable without it. Electrical furnaces play a pivotal role in melting iron from recycled materials and incorporating the essential alloys or additional components to meet the specified final standards.

Molten metal, retrieved from the furnace, is poured into the mold using either manual or automated methods. The metal delivery system within the mold ensures that both the product section and gating and risers are properly filled. It's crucial to pour enough molten metal to fill the entire cavity and channels swiftly to prevent premature solidification.

Once the cooling process is complete, castings are extracted through manual labor or with the assistance of vibratory tables. Vibratory tables serve the purpose of dislodging refractory materials from the casted components. The subsequent step involves trimming, which entails the cleaning and removal of sections connected to the main part, including runners, sprues, and the like.

In the concluding phase, manufacturers execute a series of finishing procedures to prepare the part for assembly or packaging prior to delivery. These steps involve the removal of gates, risers, and runners, along with sand-blasting or grinding the metal to attain the desired level of smoothness. Additional essential machining processes may also be carried out as needed.

Subsequently, the cast parts undergo thorough testing to assess their dimensions, surface quality, mechanical properties, and any other essential evaluations. These rigorous tests are conducted prior to the packing and delivery of the parts.