Investment casting is one of the oldest methods in metal-working existence known. From more than 5,000 years ago as a "lost wax investment casting" of the historical process in the wax pattern, which is then used for various components and products used to create a form.
Fast forward to today, thousands of years later, and science are the same. However, investment casting foundries in the world, new innovations such as high-tech refractory materials have been developed and made many advances of computers and CAD possible.
Similar to the results of our forefathers, when they do, casting offer a repeatability and unmatched quality - make the investment casting of small parts and most of high quality alloy is a good alternative to other production methods which are less accurate.
Investment Casting Process: An Overview
Design
Investment casting process begins with design. This may be an image that already exists or the prototype to be.
Mold next step is to create a mold. From the designs, drawings, or produce investment casting injection mold prototype. Wax molds and then milled with computer-aided design and / or computer-aided manufacturing, old marriage of science and high technology.
Meeting wax model
Some of the wax mold pattern on a tree or 'sprue' to all parts.
Layer
In the next part of the process, the ceramic shell or primary sludge, applied to the tree or sprue, a layer of liquid wax in fine ceramic components. During the wet pulp, in very fine sand covered and then let dry before another is more mud and sand is applied. This is repeated until six or more layers of wax on ceramic shell assembly
Outgrow
Later in the process, the ceramic plate is ready to be removed for the installation of wax from the inside. This is done using an autoclave, where the ceramic shell to melt on a tray and autoclave with steam to the wax into the mold.
High-temperature burnout
After the wax on the skins of ceramic bear high temperature fatigue of ceramic forms to heal removed. After this process they are ready for the heating and casting.
Melting and casting metal
In the step of precision investment casting process, a high quality alloy melt in the oven. This step is essential to the quality of the casting. In ensuring that part of the process, degassing and alloy, the properties of the optimal liquid metal for casting. Metal is then poured into ceramic molds.
Cooling
After cooling, a metal foundry, which has taken the form of patterns in stock. When the casting has cooled, ceramic bowl with water jet, the metal foundry located approximately at a cost.
Cut Off, Grinding and Finishing
unwanted port will then be cut with a saw and then removed by grinding. This is by thorns and hand tools, equipment and surfaces that a closed and finished casting production followed.
Although this is a fine cast done a certain way there are other ways to make castings - such as vacuum casting, typically used for casting aluminum. As the old story of fine cast of thousands of years of innovation, technological progress and the modern foundries, as to prove Alcumet Incorporated, that the process will always have a place in the manufacturing new parts, components and products to see.
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