At Weaver Industries, we offer quality machine graphite 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 company offers graphite machined products and capabilities such as graphite bearings. Please contact us today for a quote!
425 S. 4th Street Denver, PA 17517
Industrial Graphite Sales, LLC provides knowledge and experience in machined graphite work. We are a leading supplier of quality machined graphite for a number of high temperature type applications. We offer products such as graphite bearings. Our company deals directly with the graphite manufacturers both domestically and overseas. Let us be your graphite supplier, contact us today for a quote!
450 Comanche Circle Harvard, IL 60033
A manufacturer of graphite products, Becker Brothers Graphite Corporation, offers complete graphite machining facilities as well as a wide selection of graphite parts. These include graphite bearings. With us, there is no compromise for quality performance. A long history of application satisfaction proves that we can provide the assistance & expertise to assure excellent in-service performance.
39 E. Legion St. Maywood, IL 60153
Graphite crucibles are heat resistant containers that store materials and samples for various high temperature applications. 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.
In 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.