Crucibles are thick, cup-like containers that come in many different shapes and sizes and are widely used in applications from industrial to chemical, commercial to residential. They can be fabricated with or without a removable lid and occasionally with a spout, which eases the pouring process. Read More…
Leading Manufacturers
Weaver Industries, Inc.
Denver, PA | 717-336-7507At Weaver Industries, we offer quality graphite machining for parts and products. We provide control at all stages of the manufacturing process, from acceptance of an order, through project products. We have built our name on integrity, quality, technology and workmanship. Our inventory and production levels make us the nation's largest independent facility. Please contact us today for a quote!
Industrial Graphite Sales, LLC
Harvard, IL | 800-891-6469We understand the challenges that are associated with graphite machining and we strive to work closely with your team to ensure quality satisfaction. From milling, grinding, CAD or sanding, we can provide it all. We have a wide assortment of materials so you can find exactly what you are looking for. Our company also offers products designed from our innovated cutting solutions. These techniques use 30 to 40% less energy compared to traditional methods which saves you money!
Ameri-Source Specialty Products
Bethel Park, PA | 412-831-9400Ameri-Source is your source for machined graphite products. Our team of dedicated & qualified engineers & sales professionals will do their best to ensure you receive quality. We offer graphite products & capabilities such as carbon graphite, graphite machining, graphite rods, graphite design & graphite tubes. Our company offers the most competitive prices in the industry. Contact us for a quote!
Becker Brothers Graphite Corporation
Maywood, IL | 708-410-0700A manufacturer of graphite products, Becker Brothers Graphite Corporation, offers complete graphite machining facilities as well as a wide selection of parts. At our company there is no compromise for quality performance. A long history of application satisfaction proves that we can provide the technical assistance and manufacturing expertise to assure excellent in-service performance. Visit our website to find out more!
Advanced Graphite Materials
Anmoore, WV | 304-624-1200Built on over 100 years of experience, GrafTech’s Advanced Graphite Materials division manufactures some of the highest quality, most innovative machined graphite products using the best materials. Very few shops can machine graphite blocks as large as we do. We can handle ANY CAD system used today.
Hollow Graphite Cylinders - Industrial Graphite Sales, LLCIn terms of structure, graphite crucibles may be barrel, cylinder or conical shaped, wide-form with a shallow, low profile, or high-form, with high, tapered walls. Crucibles are made of metals like copper, platinum, quartz or porcelain, but graphite is a cost saving alternative to these more expensive materials. Graphite is a chemically inert, temperature resistant mineral that fares well in ovens and furnaces. It resists thermal shock, oxidation and abrasions well, and won’t melt, burn or chemically change in extreme conditions.
It is able to maintain its structure and form even at temperatures as high as 5000°F and so can be used in furnaces and high heat processes. Graphite crucibles have many applications within the foundry, laboratory testing, jewelry making, plumbing fixtures, valves, sprinklers, and other heavy-duty products. They are further used in chemical analysis, to store materials and samples during fusion and mixing processes, in ash content determination, to melt precious metals, and in foundries to melt many different metals.
The graphite used for the fabrication of graphite crucibles or other graphite products may be regular or high purity. Even less pure graphite mixtures still usually contain a high percentage of graphite, which is often mixed with clay; however the crucible does undergo high purification before being used in a process. Crucibles of any size or material are measured in milliliters and they are always portable and handled with tongs and great care. Most crucibles, unless specifically designed, have a smooth surface and they are all dark grey or black in color.
To eliminate the risk of cross-contamination and a difficult cleaning process, many graphite crucibles are one-time-use disposable products. Due to it being mixed with clay, the temperature limits of most graphite crucibles are lowered, as it the durability. After graphite reaches its maximum temperature, it tends to start slowly oxidizing and if left in a furnace too long, may erode and cause contamination.
Graphite crucibles are not very porous, and won’t absorb much of the material being held. Many sizes are available, and they may be custom made to fit certain manufacturing requirements for a higher cost, or come in standardized sizes. The machined graphite is mixed with refractory clay, grog and other additives, and then formed into the crucible shape by extrusion or die casting, and heat treated in an oven where strengthening takes place.