SHELL MOULD CASTING:
It is a process in which, the sand mixed with a thermosetting resin is allowed to come in contact with a
heated pattern plate (200 oC), this causes a skin (Shell) of about 3.5 mm of sand/plastic mixture to
adhere to the pattern.. Then the shell is removed from the pattern. The cope and drag shells are kept in
a flask with necessary backup material and the molten metal is poured into the mould.
This process can produce complex parts with good surface finish 1.25 μm to 3.75 μm, and
dimensional tolerance of 0.5 %. A good surface finish and good size tolerance reduce the need for
machining. The process overall is quite cost effective due to reduced machining and cleanup costs.
It is a process in which, the sand mixed with a thermosetting resin is allowed to come in contact with a heated pattern plate (200 oC), this causes a skin (Shell) of about 3.5 mm of sand/plastic mixture to adhere to the pattern.. Then the shell is removed from the pattern. The cope and drag shells are kept in a flask with necessary backup material and the molten metal is poured into the mould.
This process can produce complex parts with good surface finish 1.25 μm to 3.75 μm, and dimensional tolerance of 0.5 %. A good surface finish and good size tolerance reduce the need for machining. The process overall is quite cost effective due to reduced machining and cleanup costs. The materials that can be used with this process are cast irons, and aluminium and copper alloys.
It is a process in which, the sand mixed with a thermosetting resin is allowed to come in contact with a
heated pattern plate (200 oC), this causes a skin (Shell) of about 3.5 mm of sand/plastic mixture to
adhere to the pattern.. Then the shell is removed from the pattern. The cope and drag shells are kept in
a flask with necessary backup material and the molten metal is poured into the mould.
This process can produce complex parts with good surface finish 1.25 μm to 3.75 μm, and
dimensional tolerance of 0.5 %. A good surface finish and good size tolerance reduce the need for
machining. The process overall is quite cost effective due to reduced machining and cleanup costs.
It is a process in which, the sand mixed with a thermosetting resin is allowed to come in contact with a heated pattern plate (200 oC), this causes a skin (Shell) of about 3.5 mm of sand/plastic mixture to adhere to the pattern.. Then the shell is removed from the pattern. The cope and drag shells are kept in a flask with necessary backup material and the molten metal is poured into the mould.
This process can produce complex parts with good surface finish 1.25 μm to 3.75 μm, and dimensional tolerance of 0.5 %. A good surface finish and good size tolerance reduce the need for machining. The process overall is quite cost effective due to reduced machining and cleanup costs. The materials that can be used with this process are cast irons, and aluminium and copper alloys.
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