Medium-coarse graphite blocks for vibration molding | Particle size: 0.8 mm / 2.0 mm | Industrial-grade, high-temperature, corrosion-resistant properties

▍Product Description

Leveraging advanced vibration molding technology, the raw material is fully compacted under high-frequency vibration, effectively reducing internal pores and structural voids in the finished product. This completely resolves industry pain points associated with traditional graphite products, such as uneven density, susceptibility to delamination and cracking, and unstable performance. Our company strictly controls particle grading and molding parameters, precisely distinguishing between two particle size systems—0.8 mm and 2.0 mm—to meet the strength, precision, and machining requirements of various operating conditions.

Large Graphite Block

Medium Grain Graphite Bar

Graphite Block Surface

The 0.8mm particle size, with a density of 1.62 g/cm³, features fine, uniform particles and excellent machinability. It resists chipping and deformation during precision machining, making it ideal for the production of small-to-medium-sized precision graphite components. The 2.0mm particle size, with a high density of 1.72 g/cm³, offers superior structural density and mechanical strength, along with outstanding impact and thermal shock resistance, meeting the performance standards required for large-sized, heavy-duty industrial components.

The entire range of medium- and coarse-grain graphite products features stable purity and low impurity content, delivering consistent electrical and thermal conductivity. They are also resistant to high temperatures, oxidation, and chemical corrosion, enabling stable long-term operation in complex industrial environments characterized by alternating high and low temperatures, acid-base erosion, and continuous electrical current. With a service life far exceeding that of graphite products made using conventional molding processes, these products offer both high cost-effectiveness and practicality, supporting both standardized mass production and customized processing.

▍Key Product Benefits

• Outstanding Manufacturing Advantages: Utilizing a high-frequency vibration molding process, the material particles are densely packed, resulting in a uniform internal structure without delamination and low porosity. The overall density and stability far exceed those of traditional molded graphite, leading to a higher yield rate.

• Balanced Physical Properties: Available in two density gradients, the high-density structure provides superior compressive and impact resistance. With an extremely low coefficient of thermal expansion, it resists deformation and cracking in high-temperature environments, offering excellent thermal stability.

• Superior Electrical Conductivity: With low and stable resistivity values, the material offers uniform conductivity and minimal energy loss, reliably meeting the long-term requirements of various industrial applications involving electrical and thermal conductivity.

• Wide Range of Applications: Comprehensive coverage of dual-particle-size specifications accommodates both precision small parts and large-scale component manufacturing, flexibly adapting to the diverse production needs of multiple industries and offering exceptional versatility.

  
  

Graphite Block Pack

Graphite Block Bundle

Graphite Block Pallet

▍Product Specifications

▍Product Applications and Their Benefits

• Powder Metallurgy Industry

It can be processed into powder metallurgy forming dies, shims, and conductive bases. Thanks to its uniform structure and stable electrical and thermal conductivity, it ensures uniform sintering temperatures and consistent forming accuracy, effectively improving product yield rates while minimizing die deformation and wear.

• Foundry and High-Temperature Metallurgy Industry

Suitable for components in high-temperature furnaces for molten iron and steel, casting molds, and high-temperature furnace lining components. With excellent high-temperature resistance, thermal shock resistance, and oxidation resistance, it can withstand high-temperature molten environments for extended periods, eliminating issues such as high-temperature deformation and cracking, and extending the service life of furnace bodies and molds.

• Metal Smelting and Alloy Preparation

It serves as the preferred substrate for smelting crucibles and graphite liners used in alloy production. With strong chemical stability and no reaction with molten metals, it effectively ensures the purity of metal and alloy smelting and is suitable for various non-ferrous metal smelting and processing applications.

Metal Casting Process

Molten Metal Pouring

Graphite Crucible Melting

▍FAQ

• Q1: What are the differences between vibration-molded graphite blocks, compression-molded graphite blocks, and isostatic-pressed graphite blocks?

  A: Vibration molding uses high-frequency vibration to densify the aggregate. It is suitable for producing large-sized blocks (up to 3,600 mm in length), has lower costs, and achieves a density of 1.62–1.72 g/cm³, making it the preferred choice for large structural components.

  Press molding uses hydraulic presses for unidirectional or bidirectional compression. It is suitable for small to medium-sized precision parts with a density of 1.75–1.85 g/cm³, but dimensions are limited by the press.

  Isostatic pressing applies uniform pressure in all directions using a liquid medium. It achieves the highest density (1.85–1.95 g/cm³) and the best isotropy, but the equipment is expensive. It is suitable for high-end fields such as the nuclear industry and semiconductors.

  Selection Recommendations: Vibration molding is generally recommended for industrial furnace linings and large molds; compression molding for precision small parts; and isostatic pressing for nuclear reactors and high-end semiconductors.

  
  

• Q2: How should one choose between graphite blocks with 0.8 mm and 2.0 mm particle sizes?

  A: 0.8 mm particle size: Features a denser structure, higher mechanical strength, and better surface machining precision. It is suitable for applications requiring high dimensional accuracy and surface quality, such as precision molds, EDM electrodes, and semiconductor thermal field components.

  2.0mm particle size: Offers superior thermal shock resistance, higher processing efficiency, and lower costs. It is suitable for applications such as large furnace linings, crucibles, and casting molds where dimensional accuracy requirements are relatively less stringent but the material must withstand severe temperature fluctuations.

  If you are unsure, please provide us with details of your specific application, and our technical team will recommend the most suitable product for you.

• Q3: What shapes can graphite blocks be machined into? What level of precision can be achieved?

  A: We can perform various precision machining operations according to customer drawings, including:

  Cutting: Band sawing and wire cutting, with dimensional accuracy of ±1.0 mm

  Turning: CNC lathe machining of round bars and cylinders, with dimensional accuracy of ±0.1 mm

  Milling: CNC milling machines for machining flat surfaces, grooves, and cavities, with dimensional accuracy of ±0.05 mm

  Drilling/Tapping: Machining mounting holes and threaded holes, with positional accuracy of ±0.1 mm

  Special Machining: Capable of producing complex shapes such as threads, tapered surfaces, and spherical surfaces

• Q4: Can you provide cutting and secondary machining services for non-standard dimensions?

  A: Absolutely. In addition to standard square blocks and round bars, we have professional CNC machining centers that can provide high-precision slotting, drilling, and custom fabrication services for irregularly shaped parts based on your drawings.