1. The fine resin sand is
injected into the heated pattern. The resin sand will be cured
into the pattern and form the strong and fine sand mold. This
sand mold is as negative shape as the part. Our machine is fully
automatic from sand injection until sand mold ejection, therefore
no any human error occur during production.
2. In case, cores are necessary
especially for complex hollow parts, we use the other machine(smaller)
to make these cores. Also this machine is fully automatic.
3. The sand mold and core are touched
up such as removing all unnecessary flash, graphite coating(if
necessary).
4. The sand molds and cores are joined
together to form stack old.
5. The stack mold is clamped and ready
to be poured.
6. The molten metal is poured into the
stack mold, producing a metal duplicate of the pattern.
7. 7-1 to 7-2 After the metal has solidified
and cooled, the sand mold material is mechanically removed,
leaving the tree of cast metal parts.
8. The individual castings are cut or
knocked off from the tree. Feed gate stubs are ground off.
Then the cleaning process and quality assurance is done as
same as the parts from investment casting process.
