Chapter3c casting design and defetcs
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The document discusses design considerations for castings to reduce defects and costs, including designing parts with simple shapes, selecting suitable materials and processes, properly locating parting lines and gating systems to ensure uniform mold filling, and redesigning parts to make the parting line straight which can avoid defects.
Chapter3c casting design and defetcs
- 1. Chapter 3C: Casting - Design and defects DESIGN CONSIDERATION Can be carried out through experience, analytical methods, process simulation and modeling, CAD-CAM to improve productivity and reduce casting defects and resulting in significant cost saving. General considerations for geometric features, tolerances and mold features - Design the part with simple shape – easy to cast - Select a casting process and a material suitable for the part, size, mechanical properties - Locate the parting line of the mold in the part - Locate and design the gating system (runner, risers, sprue) to allow - uniform feeding of the mold cavity - Proper control and good practice Redesign of a casting by making the parting line straight to avoid defects.