Quick Detail:
1. Precision castings of valve body applied in marine and oil
industry, corrosion resistant material CF3M.
2. Exporting to Europe and North American;
3. Shot blasted and electropolished;
4. Max size: 500X500X350mm;
5. Max Weight: 80kg;
6. Chemical composition tested by German spectrometer;
7. PED and ISO9001:2008 certificated;
8. NDT test available (Dye test, X ray test etc).
Description:
Lost wax investment casting parts of a train component.
We cast a wide range of materials: stainless steel, carbon steel,
duplex alloys, nickel-based materials, and more:
Stainless Steel (70%) | Carbon Steel | Alloy Steel |
CF3M (AISI 316L), CF8M (AISI 316), CF8 (AISI 304),CD4MCu,
CD4MCuN,ANC20,1.4408,1.4517, 1.4306, 303, 430, 420, 17-4PH, SCS1 and more | SCS16, SCS14, SCS13, 1.0619, WCB, S355JR, 1045 , LCC and more | ANC2,CLA12C,42CrMo,8Q,4140,6150 and more |
OVERVIEW OF INVESTMENT CASTING PROCESS
Investment casting, often called lost wax casting, is regarded as a
precision casting process to fabricate near-net-shaped metal parts
from almost any alloy. The most common use of investment casting in
more recent history has been the production of components requiring
complex, often thin-wall castings.
The investment casting process begins with fabrication of a
sacrificial pattern with the same basic geometrical shape as the
finished cast part. Patterns are normally made of investment
casting wax that is injected into a metal wax injection die. Once a
wax pattern is produced, it is assembled with other wax components
to form a metal delivery system , called the gate and runner
system. The entire wax assembly is then dipped in a ceramic slurry,
covered with a sand stucco, and allowed to dry. The dipping and
stuccoing process is repeated until a shell of ~6-8 mm is applied.
Once the ceramic has dried, the entire assembly is placed in a
steam autoclave to remove most of the wax. After autoclaving, the
remaining amount of wax that soaked into the ceramic shell is
burned out in a furnace. At this point, all of the residual pattern
and gating material is removed, and the ceramic mold remains. The
mold is then preheated to a specific temperature and filled with
molten metal, creating the metal casting. Once the casting has
cooled sufficiently, the mold shell is chipped away from the
casting. Next, the gates and runners are cut from the casting, and
final postprocessing (sand blasting, machining) is done to finish
the casting.
Applications:
Pumps
Valves
Pipe Fittings
Automotive
Marine and Oil
Machinery
Power & Energy
Specifications:
Standards | ASTM,JIS,DIN,BS,MIL |
Maximum Casting Size | 500*500*350mm |
Casting weight | 10g~80kg |
Wall thickness | 1.5-2mm Min |
Casting process type | silica sol lost wax casting |
Machining | CNC machining, CNC lathe |
Surface finish | electro polishing, satin, hand polished, pickled, zinc plating,
vibratory polishing; |
Tolerances | According to VDG P690 |
Physical performance | Tensile test, Impact test, Hardness test |
Chemical composition test | Spectrometer |
NDT test | Dye test, X ray test etc |
Competitive Advantage:
One-stop Services of Winnington Casting
From wax die making, wax injection, pouring, secondary machining,
welding, heat treatment, polishing, surface finishing etc.
By injecting wax into a permanent-molding die to form a pattern,
investment casting get casting parts of good surface quality and
became the solution for many complex parts that are required in
large quantities.
