Wednesday, May 15, 2019

Lost Foam Casting Essay Example | Topics and Well Written Essays - 1250 words

Lost Foam Casting - Essay ExampleThe pattern is do through the habit of polystyrene foam. If the cast is to be made on the basis of a simple geometric form, then the use of a hot wire foam cutter can be done. In case the volume of casting is large, then a mass production usage pattern is sued which is uniform to the injection molding technique. The foam cluster done for the casting is coated with ceramic material via the use of brushing, dipping, flow casting and spraying. This form of applications programme is known as the refractory coating technique. After this coating dries, then the cast is put into a container and baked up on a vibration tabulate with unbounded sand. The system of automatic gushy is significant in the Lost Foam Casting (LFC) because the pouring parade is most critical in this form of casting technique (, 2013). The common metals that are use for casting in the Lost Foam Casting (LFC) are cast irons, nickel alloys, aluminum alloys, grunter al loys, stainless steels and steels. The size of the casting ranges from 0.5 kg to hundreds of tons. The minimum thickness of the walls of the casts is 2.5 mm. There is no upper assign for the thickness of these types of castings. The linear tolerance of these casting is 0.005 mm/mm and the general surface finish ranges from 25 to 23 mm in RMS. There are different types of LFC employed in the arena of engineering and construction (Figure 3). There are many industrial applications of the Lost Foam Casting (LFC) technique. This casting process is commonly used in small scale and large scale engineering and manufacturing of products.

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