What You Should Know About Casting This Year

A Basic Guide to Ceramic Mold Casting

In its most generic sense, the manufacturing method of ceramic mold casting is quite similar to that of plaster mold casting. The most tangible difference though lies in the fact that ceramic can cast materials in relatively higher temperature. Also, plaster is substituted with refractory ceramics when it comes to the creation of the mold material.

Nowadays, it is very common to see ceramic mold casting in manufacturing plants and large industries. For instance, the manufacture of metal molds, impellers, dies, and even machining cutters benefits from this very same process.

How It Is Done
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To create something by way of ceramic mold casting, the first step is to combine materials for the mold. To make the so-called “ceramic slurry,” a mixture composed of grain zircon, fused silica, aluminum oxide, water, and bonding agents needs to be produced. In order to commence with the precision casting, the slurry will be poured over a casting pattern. The moment it sets, the pattern has to be removed while the mold is intended to be dried. After which the mold will be subjected to fire. The purpose of subjecting the mold to fire is to get rid of any presence of unwanted material and to make it more rigid in the process.
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In majority of instances, there also is a need to bake the mold in the furnace. After the firing process, the mold will eventually get very tiny cracks that serve a good purpose, more particularly providing good permeability properties for the ceramic mold.

The same as that of plaster mold casting, manufacturing by way of ceramic mold casting leads to the production of parts with three pertinent characteristics: they have topnotch surface finish, high accuracy with regards to dimensions, and thin sections. As a matter of fact, the manufacturing tolerance stands merely between 0.002 to .010 inches.

Thanks to the high dimensional accuracy, there is no longer a need for traditional machining to be able to cast parts. Therefore, this very process results to a relatively easier and more efficient way of casting metals and other materials that are supposedly very challenging to do with machining. And if one is to consider the fact that there is a natural high heat tolerance of the refractory mold material, it only means that the process in itself is best for the manufacturer of metal casting materials with high melting points such as that of ferrous and stainless steel.

While it can also be said that ceramic mold casting is an obviously expensive process to undergo, the fact remains that it is one of the best in terms of manufacturing high quality products. Longer than usual time is required for the process to finish but in the end, industries know for a fact that it is all worth the wait.

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