Manufacturing And Production Technology
In a gating system, the ratio 1: 2: 4 represents

Runner area: ingate area: casting area
Pouring basin area: ingate area: runner area
Sprue base area: ingate area: casting area
Sprue base area: runner area: ingate area

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Manufacturing And Production Technology
In plunge grinding

The work rotates in a fixed position as the wheel feeds to produce cylinders longer than the width of wheel face
The work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face
The work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face
The work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face

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