Shell Moulding Process | Special Casting process | Manufacturing Processes |
Channel: Mechpro classes
Date: 2020-07-20

In this video session we have discussed the shell moulding special casting process along with its advantages, limitations as well as its various application parts also.

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Shell molding is a molding process invented by German engineer Johannes Croning in the mid-1900s. Like other molding processes, it relies on a mold to create a new object often of a base material. Shell molding is unique, however, because it uses resin-covered sand as a base material. When the sand is poured into the heated mold, it fills the mold cavity while reacting with the heat. This reaction causes some of the resin-covered sand to form a shell inside the mold, which is removed using ejector pins.

Shell molding offers several benefits for companies, some of which include the following:

Ability to create complex shapes with extreme precision
Low labor requirements
Supports most metals, including iron, steel, aluminum, copper and alloys
Bubbling isn’t a problem since the mold is free of moisture
Can be scaled for mass production

From engine blocks and cylinder heads to connecting rods and machine components, shell molding is used to make a range of different products. Shell mold casting allows the use of both ferrous and non-ferrous metals, most commonly using cast iron, carbon steel, alloy steel, stainless steel, aluminum alloys, and copper alloys. Typical parts are small-to-medium in size and require high accuracy, such as gear housings, cylinder heads, connecting rods, and lever arms.

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