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Investment Casting Foundry | Alloy Products Distribution – (949) 542-8625 – For all your investment casting foundry needs. Basics: What Is ?Metallurgy is a field covering hundreds of different methods – metals have to be heated, tempered, and cooled at the right levels for the specific job they’re required in, and a piece of steel will be treated differently depending on whether it’ll become part of a structural pillar in an apartment building, or an integral part of a jet turbine.
For the more complex and precise pieces of metal in industrial equipment, the best and oldest method in use is investment casting. What Is ?
An investment casting job begins in the hands of a specialized artist. Made from wax, wood, plastic or another material, the artist makes the final metal piece’s master pattern – that is, a pattern of the mold that the metal will have to ultimately occupy. Then, the first mold is made, called the master die. This is done by casting a molding material into the master pattern, using rubber or foam. Alternatively, a pattern is created using modern 3D printing methods, as 3D Printing Industry reported with German company Voxeljet.
The next step is the production of the wax pattern. Traditionally, this is done with molten beeswax – but given modern methods, plastic and frozen mercury are common alternatives. Usually, the wax pattern is made by pouring the molten material into the master die and swishing it around until an even coating of roughly three millimeters is produced. Investing the Wax
If the end result is meant to be a complex branch of patterns fixed into one metal piece, then several master dies would be used to create separate wax patterns, which then have to be meticulously assembled. Wax patterns can then be melded together through a heating tool, since the materials used to make wax patterns generally have a low melting point.
The finished cluster is taken to a silicate or ceramic mixture of some sort, and dipped in to coat it several times over. This mixture, called the refractory, creates a smooth and even coating all around. According to the American Foundry Society, the average thickness of the ceramic coating should be roughly 9.5 millimeters. This is the final process for the creation of the mold, and after a lengthy drying period of up two days, the coated cluster is placed in a furnace to burn out or melt the wax and leave behind only the ceramic. The investment mold is then heated, and the metal is poured into it. The final product is then hammered to remove the ceramic mold, and subjected to rigorous grinding to remove traces of the casting. Why “Investment”?
Although it sounds misleading, an investment cast is specifically called that because the archaic definition of investment is to invest, or submerge/pour something – specifically, the wax cluster and the ceramic refractory material. When Should You Ask for ?
Investment casting is specifically necessary for complex machinery – engine parts, turbine parts, specialized gears and the like. When a hammer and a forge won’t do, an investment cast will get the job done. Check us out at: Products Distribution
1320 Calle Avanzado
San Clemente, CA 92673
(949) 542-8625
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