The invention relates to a investment casting molds and their method of manufacture.
A method of investment casting that utilizes a pattern produced by stereolithography is disclosed.
The strength and solids level of an investment casting shell is incresed by incorporation at least one microsilica into the shell .
An investment casting method utilizing a pattern produced from the composition is also disclosed.
Still further, techniques for producing objects useful for investment casting applications are described, including techniques allowing for the drainage of unsolidified material.
A core for precision casting, comprising a precision casting core main body formed as a result of mixing and sintering silica particles and silica fume.
The invention relates to a gas exchange method used for producing precision casting objects.
Also provided is an investment mold casting technique compatible with a pressure infiltration process.
Then the melt with increased viscosity is finely filtrated using melt precision filter.
Said data is used to electronically control the immersion speed of the lost cast nest into the cooling medium.
In accordance with the invention, the air conducting device (7), the air supply duct (5) and the front boundary wall (3) are formed as a single-piece precision casting.
And, it can be applied in various industries, such as high-grade paint, high-grade filler, insulating material, precision casting, electronic package, aeronautics and spaceflight, and so on.
A precision casting core having silica fume added thereto has smaller resistance during heating/injection molding and improved fluidity as a result of silica fume addition.