Die
casting dies are made in at least two sections called the cover (stationary) die half and the
ejector (moving) die half.
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Tool wear with zinc is minimal, so standard H13 tool steel is
used for both dies and the four slides.
All
the die surfaces are machined and polished to exacting tolerances to
give the required surface finish on the finished die casting.
The high
quality surface finish in the tool not only reduces
polishing time for the casting, but is required to produce a
smooth surface that will take the chrome plating and produce a
mirror-bright finished surface.
