Technology

Process flow

Huida New Materials has integrated manufacturing capabilities from preforms to finished products. The entire production process is completed in its own factory, ensuring the stability and consistency of carbon-carbon composite materials.

  • Precast billet preparation

  • Preforms are prepared using high-performance carbon fiber filaments through processes such as needle punching, weaving, and lamination.
  • Controlling fiber arrangement and volume fraction lays the foundation for subsequent performance-oriented optimization.
  • Hardening treatment

High-temperature heat treatment cured preform

Improve mechanical strength and high temperature resistance

  • CVD deposition I

  • First vapor-deposited carbon layer
  • Fill the gaps between fibers to improve density.
  • CVD Deposition II

Secondary deposition further increases the thickness of the carbon matrix and the continuity of the structure.

Ensure uniform density and avoid stratification and looseness.

  • High-temperature graphitization

  • Graphitization and high-temperature purification were carried out in an environment above 2000℃.
  • Improve thermal conductivity and electrical conductivity, and control ash content to <20 ppm.
  • Machining

Precision machining using CNC machine tools

meets customers’ stringent requirements for dimensional accuracy, tolerances, and surface quality.

  • Antioxidant coating treatment

  • Patented surface-deposited anti-oxidation layer;
  • oxidation resistance temperature up to 1800℃ or higher, effectively extending service life.
  • Finished product inspection and storage

Strict testing of density, dimensions, appearance, and surface condition

Ensuring finished products meet international standards and are ready for delivery.

Technological Highlights

Precast Design and Control

  • Utilizes Zhongfu Shenying carbon fiber yarn, boasting industry-leading strength and thermal stability.
  • It has more than 30 precast production lines, supporting processes such as 3D weaving and needle punching.
  • Controllable fiber orientation and volume fraction enable customized performance differentiation
  • Reduce porosity at the source and improve product consistency

Full vapor deposition process

  • One of the few domestic manufacturers with full-phase gas densification capabilities
  • Two-stage CVD (CVD I + CVD II) process ensures density and uniformity.
  • The single-furnace deposition diameter and charge capacity are at the forefront of the industry, supporting the production of large-size components.
  • Strictly monitor weight, density, and dimensional parameters to avoid delamination and defects.

High-temperature graphitization and purification

  • Graphitization treatment at temperatures above 2000℃ to form a highly crystalline graphite structure.
  • The coefficient of thermal expansion is reduced by about 50% compared to ordinary graphite, significantly reducing thermal shock cracking.
  • Ash content is controlled at <20 ppm to meet the ultra-high purity requirements of photovoltaics and semiconductors.
  • Significantly improved thermal and electrical conductivity ensures high-efficiency operation

Patented antioxidant coating

  • Patented coating technology enables oxidation resistance temperatures to exceed 1800℃
  • Coating surface roughness ≤0.8 μm, effectively reducing material adhesion rate
  • Extends service life by 2-3 times, ensuring product stability and reliability in extreme environments.

Quality control and precision machining

  • Quality control points are established for each key process: preform → CVD → graphitization → coating
  • CNC machining is employed to ensure high-precision dimensions and strict tolerance control.
  • Full inspection of density, strength, and surface condition ensures high consistency and reliability.