Workshop Technology
In a cold chamber die casting machine

Melting pot may have any location
Low temperature and pressure is used
Melting pot is an integral part of the machine
Melting pot is separate from the machine

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Workshop Technology
Piercing is an operation of cutting

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

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