Vacuum Casting

Vacuum Casting

Vacuum Casting Process Engineering

In many cases, casting metal in the natural environment produces quality stuff, but in some instances metal makers have figured out how to achieve optimal cast components. By using a vacuum casting technology to evacuate air in an enclosed area, either to produce a mold, pour castings or melt metal with complex and difficult properties. Vacuum casting is an additive procession used in conjunction with a stereo lithographic model and a silicon form that allows us to produce polyurethane castings models quickly. 

How Does It Works 
Firstly, we converted the papers or physical models to the 3D data; also, we are willing to help you to meet your needs according to different situations. Then our skilled engineers start to design the silicon molds by analyzing data. When the craft has been established, CNC machining and SLA are there to producing the mockups.

Features of Vacuum Casting:
Accurate temperature control
Environmentally-friendly material
Small scale production
Abundant materials selection
Short lead time


Craft Procession

A silicon form is placed into a vacuum chamber and is filled with polyurethane. During this process, the silicon mold stay in a constant heating chamber, and then warming up to  60-70℃and then deforming and solidification are executed in the next procedures.

The vacuum sucks out any air trapped inside the silicon form, making sure that there are no air bubbles in the manufacturing. Also, gas vents are digging during this procession. After that, our excellent teams will help you realize your customized requirements. Considering the complexity of the prototype, generally, each of a silicon form can produce 10 to 20 pieces.

KAIAO focus on every detail to provide the best services and perfect products to clients, so finishing making including: polishing, silk screening, laser etching, chrome plating and more. And this allows the production of high-quality, complex prototypes for numerous purposes such as functionality tests.


Material Selection

The variety of polyurethanes available is so great that almost any material used in the finished product can be imitated using this process. Products used to copy material: PU, imported PU, transparent PU, soft PU, ABS, PP, and PC. It is even possible to create transparent, strengthened, colored and rubber prototypes.

With our Vacuum Casting Machines, we can produce standard parts as well as shaped parts (such as bearing sleeves or stud bolts) and reproduce the prototypes with original color, texture and geometries from prototypes to components. These plastic castings will represent the mechanical properties of the production parts from a steel mold.  
At KAIAO we can produce parts to extremely fine levels of detail. Our aim is to satisfy any tool maker’s production tooling requirement.
Find more about vacuum casting information, free for contact us.

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