Workshop Technology
In a hot chamber die casting machine

Nonferrous alloys with low melting temperature are casted
Ferrous alloys with high melting temperature are casted
Ferrous alloys with low melting temperature are casted
Nonferrous alloys with high melting temperature are casted

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Workshop Technology
Riddle is used for

Moistening the sand around the edge before removing pattern
Reinforcement of sand in the top part of moulding box
Cleaning the moulding sand
Smoothing and cleaning out depressions in the mould

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Workshop Technology
Piercing is an operation of cutting

A flat sheet to the desired shape
A cylindrical hole in a sheet of metal by the punch and the die
A hole (other than cylindrical) in a sheet of metal by the punch and the die
A number of holes evenly spaced in a regular pattern on a sheet of metal

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