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APC´s partner uses lost wax casting process and precision
machining & surface treatment technical to produce thousands of
metal lost wax casting parts with the materials carbon steel,
stainless steel, heat resistant steel, alloy steel, low alloy steel,
High temperature alloy steel, aluminum alloy, copper alloy, high
chromium cast iron and ductile iron.
APC´s partner is one experience castings manufacturer who uses the
lost wax- silica sol shell craft (the quality of this kind of
castings superior to the water glass craft castings)
and APC´s partner is good at producing and manufacturing's the
complex metal precision castings.
APC´s partner lost wax casting process & machining perform ISO
9001:2000 system strictly to guarantee the requirement of customers,
now APC´s partner has put ISO/TS 16949 into operation.
APC´s partner lost wax investment casting process and machining with
an output 60 tons per month precision metal castings including lost
wax castings,
precision machining parts and surface treatment metal products
exports to all over the world.
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Produktion
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APC på Kvalitets Audit |
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Product Craft: Investment casting (Colloidal sillica shell mould)
1 WAX INJECTION
Wax mold of the desired castings are produced by injection molding.
These replicas are called investment patterns.
2 ASSEMBLY
The patterns are attached to a central wax stick, called a sprue, to
form a casting cluster or assembly.
3 SHELL BUILDING
The shell is built by immersing the assembly in a liquid ceramic
slurry and then into a bed of extermely fine sand, the binder is the
colloidal silica. Up to six layers may be applied in this manner.
4 DEWAX
Once the shell is dry, the wax is melted out, creating a negative
impression of the assermbly with in the shell.
5 CONVENTIONAL CASTING
In the conventional process, the shell is filled with molten metal
by gravity pouring. As the metal cools, the parts and gates, sprue
and pouring cup become one solid casting. (Hitchiner prefers to use
its superior casting technology.)
6 KNOCKOUT
When the metal has cooled and solidified, the ceramic shell is
broken off by vibration or water blasting.
7 CUT OFF AND PART CLEANING
The parts are cut a way from the central sprue using a high speed
friction saw. Then the parts are going to be cleaned by Acid
Pickling.
8 FINISHED CASTINGS
After minor finishing operations, first inspection, heat treatment,
part blasting, dimensional inspection, final Inspection, the metal
castings- identical to the original wax patterns- are ready for
shipment to the customer.
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Design tolerance
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Dimention tolerance
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