What is Molded Graphite
These are graphite made through the molding process. At East Carbon, we make this graphite by cold pressing and this allows its customization into distinct shapes or molds. Molded graphite’s excellent features are present across its entire mass.
Molded Block Graphite
Superfine Molded Graphite Rod
Customized High-density Graphite Mold
High Pure Graphite Coated Mold
Graphite Mold Casting for Smelting Copper Rod
Gold Casting Graphite Mold
Metal Melting Casting Graphite Mold
High-temp Resistance Graphite Mold
Advantages of Molded Graphite
- Ability to Disperse Heat Efficiently: Molded graphite boasts of an excellent ability to conduct heat making it perfect for heat transfer. Its thermal conductivity can be equated to that of a diamond.
- Self-Lubrication: Molded graphite makes the perfect material for producing bearings and gaskets due to its self-lubricating capabilities. Its particles slide over each other consequently minimizing friction.
- Lightweight: Molded graphite is perfect for applications that demand lightweight components like the aerospace industry.
- Good Machinability: This type of graphite can be molded and cut out in distinct shapes as per your order specification. This feature makes molded graphite the perfect solution for applications that necessitate complex designs.
- Low Thermal Expansion: Exposing molded graphite to extreme temperatures, whether cold or hot does not provoke contraction or expansion.
- Dimensional Stability: The excellent features of molded graphite are consistent throughout its entire form. It maintains its dimensional stability irrespective of size and shape.
- Long Service Life: Molded graphite can withstand abrasion, wear, and tear even when subjected to harsh conditions like extreme heat and chemicals.
- Smooth Surface: The surface of molded graphite is largely smooth hence eliminating the need for complex finishing processes.
Applications of Molded Graphite Today
Automotive Industry – In the automotive industry, it is used to produce gaskets and brake pads.
Metallurgy – It is used to manufacture crucibles for melting metals and making furnace components.
Consumer Goods – Molded graphite is utilized to manufacture pencil leads and other consumer products.
Chemical Processing – It is used to produce chemical reactors, valves, and other components used to handle chemicals.
Electronics – It is used to produce semiconductors, electrodes, and other electrical elements.
Nuclear Sector – In the nuclear sector it is used to manufacture nuclear reactors and shields.
Molded Graphite Data Sheet
Molded Graphite Data Sheet
East Carbon molded graphite is typically produced using natural or synthetic materials like petroleum coke. The manufacturing process involves the following steps;
Step 1: Powder Preparation
To commence the production of molded graphite, graphite powder is generated. The powder can be drawn from natural graphite crystals or man-made graphite blocks. These blocks are pulverized in ball mills before being screened to categorize the grains based on particle size.
Step 2: Blending
The generated powder is then placed in large jars where strong binders such as synthetic resin are injected. During this process, other additives may be added to improve the graphite’s quality. Blending bandages the graphite powder.
Step 3: Molding
The molding process simply involves giving the blended graphite its desirable shape and size. Molding is often done using numerous techniques.
· Isostatic Pressing
Cold isostatic pressing essentially generates molded isostatic graphite. This technique simply subjects the blended graphite to even pressure at room temperature. It relies on a liquid medium and a flexible molding container.
· Extrusion Molding
Graphite molded through extrusion bears the shape of a bar, plate, or pipe. This is because extrusion involves dies with distinct openings, which give the graphite its ultimate design. The molded graphite exiting the die is continuous.
· Vibration Molding
Vibration molding relies on high-frequency trembling to shape blended graphite. This technique is comparative economic hence it is often utilized to mold graphite for large-scale use.
· Compression Molding
Compression molding subjects the graphite powder blended with binders through immense pressure to create molded graphite. This technique delivers compacted graphite with excellent features.
Step 4: Baking
The molded graphite mixture is then subjected to a baking process, which is alternatively referred to as carbonization. This step relies on heat to evaporate the binding elements used to bind the graphite powder. Baking results in the generation of a material with a high carbon content.
Step 5: Graphitization
To generate first-grade graphite, the baked material is graphitized by heating it under higher temperatures. Typically, graphitization necessitates temperatures well above 2500 °C. This process equips the molded graphite with excellent electrical conductivity since it reconfigures the carbon atoms.
Step 6: Machining
Machining takes the graphitized material and cuts it into distinct molds characterized by different shapes and sizes. It is accomplished using cutting machines with customized cutters.
Step 7: Finishing
Finishing involves several processes aimed at improving the quality of the molded graphite. The most common finishing process is surface treatment, which involves impregnating the molded graphite with coatings.
· Strength
Molded graphite has a crystalline make-up and this contributes to their shear strength. You can use equipment made from molded graphite to handle heavy loads since they can withstand heavy pressure.
· Electrical Conductivity
Molded graphite facilitates the smooth transmission of electric current since it has a high electrical resistance. This equips it with exceptional electrical conducting capabilities similar to conductive metals. Thanks to its conductivity, you can utilize it in electrical components like semiconductors.
· Low Friction
Molded graphite is often referred to as a dry lubricant due to its low affinity for friction. Its low friction tendency is prompted by the loosely held graphite grains. This makes it the perfect choice for components necessitating reduced friction.
· Thermal Conductivity
Molded graphite is frequently utilized in heat transfer components like heat exchangers owing to its impressive thermal conductivity. It can transmit heat efficiently thereby offering a cheaper heat-exchanging alternative.
· Melting Point
Molded graphite provides a feasible solution for entities dealing with hot elements like molten metals due to its high melting point. It can handle comfortably boiling elements with melting points as high as 3000 °C.
· Thermal Expansion
Molded graphite is considerably stable and this helps it maintain its design and dimension under extreme heat or cold. Its relatively low expansion coefficient makes it a perfect option for extreme temperature applications.
· Chemical Inertness
Chemically, molded graphite is considered inactive and this means that it does not react with most chemicals. This permits its use to process chemicals. Molded graphite is also resistant to chemicals and this makes it corrosion resistant.
