Vacuum Investment Casting

Vacuum investment casting is one of the precision investment casting methods.
This special technic is mainly applying to producing the small but high
requirements casting items such as aircraft parts, jewelry, and accessories.
The term, vacuum investment casting, refers to the process of melted metal
pouring into the mold under negative pressure. This negative pressure is
created by a vacuum machine. In this way, the product is able to be the
exquisite masterpiece that the designer wishes to present. And this method can
meet the mass production requirement, the change of style and variety can be
considered at the same time.

The Process of Vacuum Investment Casting
The vacuum investment casting jobs is carried on in the specific furnace which
is can be categorized by 2 types according to their product metallurgical
characteristics: the equiaxed, and the controlled solidification castings. For
the first type, there's no special consideration to control the solidification
in the mold. But for the furnace with controlled solidification, it has the
ability to exert a high level control on the solidification process in the
mold.

The application of Vacuum Investment Casting
The aerospace industry is one of the major applications during the melting of
metal material for vacuum investment casting. Because there're many complex
alloys and superalloys, such as titanium and nickel-based parts are used in
this industry. Melting these alloys in a vacuum, under an oxygen-free
atmosphere, limits the formation of nonmetallic oxide and nitride inclusions in
the metal.

Advantages of Vacuum Investment Casting
Investment casting process advantages and disadvantages of precision casting,
also known as investment casting, with other casting methods and parts forming
methods compared to investment casting has the following advantages.

1. Casting size precision, surface roughness value fine, casting size precision
can reach 4-6, surface roughness up to 0.4-3.2μm, can greatly reduce the
machining allowance of castings, and can achieve no spare manufacturing, reduce
production costs.

2. Vacuum investment casting can cast complex shape, and difficult to use other
methods of casting, casting profile size as small as a few millimeters to
thousands of millimeters, the thinnest wall thickness of 0.5 mm, the smallest
hole through 1.0 mm or less.

3. Alloy materials are not limited: such as carbon steel, stainless steel,
alloy steel, copper alloy, aluminum alloy and high-temperature alloys, titanium
alloys and precious metals and other materials are available for precision
casting production, for difficult to forge, welding and cutting of alloy
materials, is particularly suitable for precision casting method of production.

4. High production flexibility and adaptability. Can be used for both mass
production, also applicable to small quantities or even single production.

In summary, precision casting has the advantages of small investment scale,
large production capacity, low production costs, complex product process
simplification, fast investment. Thus, in competition with other processes and
production methods in a favorable position.

Rayforce Manufacture is a private metal casting company, we provide metal
casting china, vacuum die casting and etc. Want to know more? Please contact
us.

Minimum Order: 3000 metric tons

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