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Crucibles are a critical part of the process of melting metal. They are used in fuel-fired furnaces, in electric resistance furnaces, and in induction melters to hold molten metal and transfer it to a pouring spout at the end of each melt cycle. They come in a wide variety of traditional and specialized shapes and are available with or without pouring spouts.
Choosing the Right silver crucible for Your Needs
The type and performance characteristics of a crucible depend on its use in your specific application. The type of crucible you select should be carefully matched to your specific needs for temperature, chemical and physical properties.
Graphite is one of the most common materials for crucibles. Graphite is either naturally occurring or manufactured from synthetic compounds using a range of production processes.
Forming the Crucible
During the manufacturing of graphite crucibles, there are different ways to shape the material to produce the desired structure and density of the finished product. These methods include hand, rolling, rotary, or compression molding.
Maintaining the Crucible
Keeping the crucible clean, dry and free of moisture is important for ensuring it performs well and lasts long. Moisture can deteriorate graphite and lead to premature failure.
Skimming the Slag off of the Melt
During the melt process, slag can be formed that contains impurities that have separated from the silver during the melting process. It is essential to skim the slag off of the melted silver using your graphite stir rod or another tool. Then you can pour and cast your silver without worrying about the slag getting in your way or affecting the quality of your work.
