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1. Blue Print Drawing |
| The first stage of investment
casting method is designing parts and drawing blue prints
of the products that requires no defect, light weight
and rationality. |
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2. Metal Dies Forming |
HANIL produces metal dies that
must be made by taking into account expansion rate between
hot and cold temperature of the metal.
We can offer you relatively short delivery time and low
cost. |
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3. Wax Pattern Making |
| Then wax is injected into the
metal mold to produce prototype of product that stands
the expansion rate. |
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4. Wax Assembly |
Wax patterrns are then welded
to the sprue post.
A sprue post may hold anywhere from one to several hundred
patterns in one assembly which then so called a tree. |
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5. Coating |
A tree is coated with refractory
material and then after dried.
This procedure is repeated several times and the coating
of ceramic gets its suitable thickness. |
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6. Dewaxing |
| After the drying procedure, the heat of
steam in a dewaxing autoclave melts the wax down. |
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7. Burnout (Burn out of shell) |
| Dewaxed mold is then baked
in a furnace to burn out residues on the mold interface
completely and this heat treatment also enhances physical
strength and permeability of the shell. |
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8. Pouring |
| Molten metal is poured in burned-out
shell. |
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9. Mold Shattering (Removal of Ceramic) |
| The mold is then broken to
get products by using shatterer. |
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10. Cutting (Part Cutting) |
| Products are to be cut off
from the sprue post. |
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11. Gate Grinding |
| Grinding the residues on the
surface of the products. |
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12. Heat Treatment |
| To improve mechanical strength
of the additional products heat treatment is to be performed
according to their characteristics. |
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13. Inspection |
All of Hanil products are inspected
strictly and thoroughly.
Not only size and shape of the products are inspected
visually but also X-ray and chemical composition analysis
are performed on its own strict specifications. |
