what is investment casting

What is investment casting?

Investment Casting is also known as the lost wax process. This process is one of the
oldest manufacturing processes. The Egyptians used it in the time of the Pharaohs to make
gold jewelry (hence the name Investment) some 5,000 years ago. When beeswax formed
the pattern, to today’s high-technology waxes, refractory materials and specialist
alloys, the casting allow the production of components with accuracy, repeatability,
versatility and integrity in a variety of metals and high-performance alloys.
Lost foam casting is a modern form of investment casting that eliminates certain steps in
the process.

The process is generally used for small casting, but has produced complete aircraft door
frames, steel casting of up to 300 kg and aluminium casting of up to 30 kg. Intricate
shapes can be made with high accuracy. In addition, metals that are hard to machine or
fabricate are good candidates for this process. It can be used to make parts that cannot
be produced by normal manufacturing techniques, such as turbine blades that have
complex shapes, or airplane parts that have to withstand high temperatures.

There are many kinds of investment casting.

Lost wax casting

Material:WCB,ASTM1010;ASTM1020;ASTM1018;ASTM1025;ASTM1038;ASTM1040;
ASTM1045;ASTM4130;ASTM4140, SS304；SS316；SS316L；S355J2G3；S355JR；ST52-3；ECT.
Used for: Engine blocks and manifolds, machine bases, gears, pulleys, agriculture parts,
marine parts, medical parts,lifting machine parts; hardware, automobile parts,ect

Carbon Steel Casting

Material:ASTM430;ASTM410;ASTM416,ect.Carbon Steel:WCB,AISI1020;AISI1045;
S355J2G3,S235JR,ect
Used for Agricultural machines; lifting machines; grinding machines; medical machines,
automobile cars,ect.

Lost Wax Process

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