Ceramic Mold Casting, more commonly known as ceramic molding, is an art that has been practiced around the world for hundreds of years. It involves casting ceramics in metal or plastic molds. Ceramic Mold Casting comes in different forms, the two most common being Unicast Process and Shaw Process.
What Type of Parts are Good Candidates for Ceramic Mold Casting?
The first step in Ceramic Mold Casting is to mix together the materials that make up the mold. These ingredients include grain zircon, silica, aluminum oxide and water. There are other materials that can be added to the mixture, depending on the product the caster is making. This combination is laid over the previously mentioned patter and set for a set number of hours usually more than 24. Like other ceramics, the mold is left to try and is then fired and dried.
Any extra unwanted material on the mold is burned off in the furnace. Imperfections in the mold such as small cracks are acceptable because they allow it to be permeable.
Once they molds are completely rigid, dried and strong enough to be used, they can be used for casting. If the mold is not strong enough, they can be reinforced with fireclay material. Sometimes, the mold will be heated again before the casting to ensure the metal that is inserted fills every crevice. Like other moldings and casting processes, Ceramic metal casting cracks and breaks when the metal is removed.
Designing Parts for Ceramic Mold Casting
Ceramic Mold Casting companies use patterns to shape the ceramic material into the desired shape. The casting can be made of wood, rubber, or metal, among other materials. The molds are put in a furnace at an extremely high temperature usually above 1800 degrees, so they can be cured quickly. Unlike other methods of molding, Ceramic Mold Casting does not require the use of wax patterns and the size of the alloy is not restricted.
Sourcing Ceramic Mold Casting
Ceramic Mold Casting quotes can be given by many different companies across the world. Ceramic Mold Casting work is extremely slow, because each piece of the process require at least 24 hours, if not longer. Despite this, Ceramic Mold Casting provides more durable results than any other type of casting; most notably plaster casting, which has tendencies to break easily.