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pitch based carbonization furnace oven kiln.jpg

High Temperature Pitch-Based Carbonization Furnace by China Suppliers - Leading Factory for Carbon Fiber Production Equipment

In the manufacturing process of pitch-based carbon fiber, the carbonization furnace plays a crucial role after the pre-oxidation furnace. This essential equipment is responsible for transforming pre-oxidized fiber into high-quality carbon fiber. As a leading factory in China, we pride ourselves on delivering superior products. Our commitment to excellence ensures that we meet the demands of suppliers worldwide by providing top-tier pitch-based carbon fibers, engineered for performance and durability
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    Technical Parameters

    Main Functions

    Removal of Non-Carbon Elements

    High-temperature pyrolysis removes elements such as O, H, and N from pre-oxidized fibers (residual rate <1%), increasing the carbon content to 92%-99%.

    Formation of Graphite Structure

    High temperatures promote rearrangement of fiber molecular chains, forming a turbostratic graphite structure, which imparts high modulus and high strength to the carbon fibers.

    Key Performance Relationships

    Process control in the carbonization furnace directly affects the tensile modulus (150-900 GPa) and strength (1-7 GPa) of the carbon fibers. It is a crucial element in the development of high-modulus pitch-based carbon fibers (such as M60J grade for aerospace applications).

    Frequently Asked Questions

    Q: What is the primary purpose of high-temperature pyrolysis in carbon fiber manufacturing?

    The primary purpose is to remove non-carbon elements like oxygen (O), hydrogen (H), and nitrogen (N) from pre-oxidized fibers, reducing their residual rate to less than 1% and increasing the carbon content to 92%-99%.

    Q: How is the graphite structure formed in carbon fibers?

    High temperatures during the carbonization process promote the rearrangement of fiber molecular chains, resulting in the formation of a turbostratic graphite structure that gives the carbon fibers high modulus and high strength.

    Q: What is the typical tensile modulus and strength range of the carbon fibers?

    Depending on the process control in the carbonization furnace, the tensile modulus ranges from 150 to 900 GPa, and the tensile strength ranges from 1 to 7 GPa.

    Q: Why is furnace process control so critical?

    Process control in the carbonization furnace directly determines the final mechanical properties (tensile modulus and strength) of the carbon fibers, making it vital for high-performance applications.

    Q: What grade of carbon fiber is used for aerospace applications?

    High-modulus pitch-based carbon fibers, such as the M60J grade, are developed using these precise carbonization processes specifically for aerospace applications.