Manufacturing And Production Technology
A better machinable metal is one which gives

Higher chip-tool contact area and smaller shear angle
Lower chip-tool contact area and larger shear angle
Higher chip-tool contact area and larger shear angle
Lower chip-tool contact area and smaller shear angle

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Manufacturing And Production Technology
In plunge grinding

The work is reciprocated as the wheel feeds to produce cylinders shorter 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
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 longer than the width of wheel face

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Manufacturing And Production Technology
The grooving is an operation of

Reducing the diameter of a workpiece over a very narrow surface
Beveling the extreme end of a workpiece
Enlarging the end of a hole cylindrically
Embossing a diamond shaped pattern on the surface of a workpiece

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Manufacturing And Production Technology
The primary purpose of a sprue in a casting mould is to

Feed the casting at a rate consistent with the rate of solidification
Feed molten metal from the pouring basin to the gate
Act as a reservoir for molten metal
Help feed the casting until all solidification takes place

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