Gravity casting, also known as permanent mold casting, can be ideal for manufacturing metal components for specific applications. This article will examine when gravity casting is the optimal choice over other casting methods or machining processes to meet project requirements. Critical factors like part geometry, production quantities, material options, quality needs, lead time, and cost will be analyzed. What is Gravity Casting? Gravity casting relies on the force of gravity to fill metal molds positioned below a pouring basin. Once the mold cavity is filled, the liquid metal solidifies into the desired shape. The mold remains stationary during the pouring and solidification process with no applied pressure. The critical advantage of gravity casting is its use of reusable metal molds, typically made from cast iron, steel, or aluminum alloys. It enables repeatable production of consistently dimensioned castings with good surface finish at a relatively low cost. Simple castings may onl
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