investment casting

Investment casting foundry is typically used to create intricately formed components that call for tighter tolerances, thinner walls, and superior surface finishes than sand casting can provide.

The process used to create the mold is what makes investment casting unique. Investment casting is frequently used to produce intricately formed components that have higher stiffness, smaller walls, and a better surface polish than casting can offer.

Investment casting is distinguished by the process used to create the mold. A part design is made of wax and then submerged in ceramic-based slurry including colloid silica and alumina.

By heating the mold in an oven, the wax is removed, producing a ceramic shell mold for casting. The investment casting technique, sometimes referred to as the lost wax process, is used to produce precision-cast aviation parts such as blades for gas turbines.

The Reasons: Why Investment Casting is a Good Option When Creating Complex-Shaped Components:

  1. Quality Reliability:
  • As the wax design will be an exact replica of the metal part when it is created, investment casting is typically used when design accuracy is essential. 
  • This is especially advantageous for components that may be used in a range of industries and applications.
  • Regardless of whether you’re making little or large quantities, the metal component must have precise dimensions, geometries, and complexity. 
  • With investment casting, you can retain that dimensional precision for every metal product and casted mold.

2. Several Volumes of Production:

  • A ceramics shell is then constructed around a wax design that has been cast into a mold. Afterwards, the waxes from the mold are melted, and molten metal is poured into it to form the component.
  • Because the process is built to dependably generate a certain number of parts suitable for high-volume manufacturing runs, investment casting is repeatable.

3. Outstanding Surface Finish:

  • The lost wax process of investment casting yields castings with superior surface polish compared to other casting techniques.
  • Because to the fine limits, limited or no processing, and greater surface polish, permanent mold tolerance levels are higher compared to other castings procedures. 
  • While it can also increase the worth of a product by imprinting intricate text or a Logos on the outside, surface cleaning is not always necessary.

4. Tighter tolerances, closer net shapes:

  • Even if tighter tolerances are required, we allow for a tiny amount of machining during casting, and any further machining will be minor. 
  • Hence, we may claim that casting can create products with a net-like or nearly-net form. 
  • Different kinds of casting techniques might not always support this. investment casting is another name for precise casting, particularly for castings of precision stainless steel. 
  • As compared to other production processes, Gemsons can eliminate further machining by meeting good tolerance levels CT5-CT6.

5. Fewer casting flaws:

  • Investment casting foundry can produce high-quality products with fewer casting faults, and we can offer reliable process controls.
  • Also, our percentage removal is far lower than that of sand casting. This does not preclude the chance of faults, though, and in order to guarantee that our clients receive products free of flaws,

we thoroughly inspect each item once production is finished to make sure there are none.


Before pouring, sand moulds must be disassembled to remove a design. To guarantee a good cast, a pattern must be created with trickles, or drafts, to reduce friction and stop the mould from being disturbed when the pieces are separated. 

Due to the fact that sand molds are made of two halves, the final result is always going to have a separation line that may need to be removed after cooling.

A variety of goods and materials may be made using investment casting. Products can weigh up to a thousand pounds and as little as a portion of an ounce, depending on the casting capabilities of a site.

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