Metal Melting and Other Experiments
In general, it is common to think of crucibles as being created from metals such as copper, platinum, quartz or even porcelain. People do not always think of graphite, an item commonly known for its use in pencils. Yet, this is an excellent and cost saving alternative to the other materials that tend to be on the more expensive side. Crucibles are a type of container chosen for its ability to withstand high temperatures. Used to melt or alter various materials from metals, glass, pigments or for various lab testing, these products must have incredible resistance.
Graphite is chosen in many cases because of the many qualities it is provides. It is a chemically inert material, with high temperature resistance making it the perfect material for being heated by oven or furnace. Further, the material is able to withstand thermal shock, melting, oxidation, abrasions and chemical change. While it has countless attributes, the product is not invincible. It must still be handled with care and should not be used with certain materials, such as iron that have the capabilities to change the composition or even completely ruin the product.
Graphite crucibles tend to come in barrel, cylinder or cone shapes. They can be wide with a shallow, low profile or else come in a high-form with high, tapered walls depending on the application they will be applied to. There are countless sizes available and many manufacturers will even create custom products to better suit certain applications and processes. When being used, it is still important to remember that while they may be very resistant and nonporous, absorbing almost no material that they may contain, they still get hot. While they may be portable, a graphite crucible should always be handled with tongs and extreme levels of care to make sure accidents are easily prevented.