Types and Uses of Graphite Plate Production and Processing

Types of Graphite Plate Production and Processing:

1. Anti-Oxidation Coated Graphite Plates: These plates have an anti-oxidation protective coating (graphite electrode antioxidant). The creation of a conductive high-temperature anti-oxidation protective layer can reduce electrode consumption during iron smelting (by 19% to 50%), increase electrode lifespan (by 22% to 60%), and decrease electrode electromagnetic energy consumption.
2. General Output Power Graphite Plates: These are used in electric furnaces in iron, silicon, and yellow phosphorus smelting plants. They allow the use of graphite electrodes with current intensity below 17 A/cm².
3. Ultra-High Output Power Graphite Plates: These plates permit the use of current intensity exceeding 25 A/cm², mainly used in medium-frequency furnaces with very high output power.
4. High-Power Graphite Plates: These plates allow the use of current intensity between 18 and 25 A/cm², primarily used in high-power medium-frequency iron smelting furnaces.

Packaging of Graphite Plates:

1. Interface Method: One end of the electrode is connected and packaged for transportation. The key function of the packaging is to protect the electrode during storage and transport, especially the external threads.
2. Individually Packaged Welding Rods and Connectors: These should be packaged and shipped separately.
3. Transportation and Storage of Graphite Electrodes:
   • To ensure the integrity of the electrode’s inner and outer threads, avoid hooking the electrode’s end holes directly during transport.
   • Do not stack electrodes and RF connectors directly on the ground; place them on wooden or iron structures to prevent damage or contamination.
   • Temporarily unnecessary electrodes and connectors should remain packaged to avoid dust and dirt from contaminating the threads or holes.
   • Store welding rods in a waterproof area. Dry wet rods before use to prevent cracking and oxidation during steelmaking.
   • Handle connectors carefully to avoid collisions that could damage the threads.
   • Prevent rolling and damage by lifting or unwinding electrodes properly.

High-Purity Graphite Plates in Various Industries:

1. Mechanical Applications: High-purity graphite plates used in mechanical applications need raw materials with good wear resistance and lubricity, which are typically dense and fine-grained.
2. Conductivity: Graphite plates with good conductivity usually have larger particles since large-particle graphite has high current resistance and is less prone to breakage. Manufacturers choose raw materials with a high degree of graphitization, which are soft and conductive.

Graphite plates are a new type of non-metallic material. The lower the resistivity, the higher the allowable current density and the smaller the diameter. The uniqueness of graphite plates lies in their strength, which increases with temperature. The mechanical strength of high-power graphite plates can be categorized as compressive strength, flexural strength, and tensile strength.

1. Tensile Strength: The instantaneous ultimate load that a material can withstand when subjected to tensile force.
2. Ultimate Load (Flexural Strength): The load at which a material will bend and then break when subjected to force perpendicular to its axis.

By understanding the various types and processing methods, one can select the correct type of high-purity graphite plates for specific industrial applications, ensuring optimal performance and longevity.