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.
What is Vacuum Casting Process?
The vacuum investment castingjobs is carried on in the specific furnace which is can be categorized into 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.
Why Would You Use Vacuum 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.
- μm can greatly reduce the machining allowance of castings, and can achieve no spare manufacturing, reduce production costs.
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.
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