High-purity isostatic pressing graphite crucible
High-purity isostatic pressing graphite crucible
1. Material description
Main ingredients: High-purity calcined coke + graphite aggregate
Forming: Isostatic pressing molding, uniform density, no internal defects
Treatment: Graphitization purification at temperatures above 2800°C
Density: 1.80–1.92 g/cm³, more dense structure
Purity: Ultra-high purity, few impurities are precipitated
2. Features
Extremely strong high-temperature resistance, capable of withstanding the high-temperature process of graphitization
Uniform structure, no powder shedding, no contamination of negative electrode materials
Uniform heat conduction, good product consistency
Strong oxidation resistance, longer service life
Ultra-high purity, meeting the requirements of battery-grade negative electrodes
Main applications
High-temperature graphitization of negative electrode materials (core process)
High-end artificial graphite negative electrode sintering for power batteries
Sintering of new high-performance negative electrode materials such as silicon-carbon negative electrodes
High-end production lines with strict requirements for ultra-low impurities and high consistency
Top enterprises in the 3C electronics, power, and energy storage battery negative electrode materials sector
Common Problem
Product Core Definition
It is made from 99.9% to 99.99% high-purity artificial graphite as the base material. It is formed through isostatic pressing (partial molding), 2500℃ high-temperature graphitization, and CNC precision processing. It is a dedicated container for lithium battery negative electrode materials (artificial graphite / silicon carbon / hard carbon) during the graphitization process at 2600~2800℃ and the carbonization process at 1200~1500℃. Its core function is to ensure the purity, uniformity and production capacity of the materials during high-temperature treatment.
Brand Quality Service
Compressive strength: ≥ 45 MPa (at room temperature), ≥ 60 MPa (at 2000°C high temperature, strength increases by 30% instead)
Bending strength: ≥ 25 MPa (conventional grade), ≥ 40 MPa (high-end grade)
Stacking capacity: Can be stacked in multiple layers (conventional 3 - 5 layers), the bottom box can bear the total weight above ≥ 500 kg without collapse
Heat conductivity: 120 - 150 W/(m・K) (at room temperature), remains stable at high temperatures, temperature difference inside the furnace ≤ ±5℃
Closed cell ratio: ≥ 98%, negative electrode fine powder (particle size ≤ 10 μm) does not penetrate or spill, raw material loss rate ≤ 1%
Surface roughness: Ra ≤ 0.8 μm, no material adhesion, residual amount during unloading < 0.5%
Compared with ordinary carbon boxes: Service life is increased by 3 to 6 times, and the cost of single-ton negative electrode consumables is reduced by 8 to 12 yuan
Antioxidant coating effect: SiC coating thickness is 80~150 μm, oxidation weight loss rate decreases by 85%, and service life is extended by 50%
Large size: 800×600×300mm, φ600×H1200mm (suitable for continuous graphitization furnaces, single furnace loading capacity is increased by 2 times)
Wall thickness range: 20~30mm, balancing strength and heat conduction efficiency
Founded in 1984, our factory is located in Huixian City, Henan Province, China, one of the important industrial regions for graphite processing and advanced materials manufacturing.
With nearly 30 years of experience in graphite machining, we have developed strong capabilities in producing high precision graphite parts for multiple industries, including vacuum furnaces, semiconductor equipment, metallurgy, photovoltaic crystal growth, EDM machining, and new energy materials.
Professional team
200+ experts worldwide
Senior project managers effectively control all aspects of the project
7x24 hours delivery
Located in 27 cities around the world,with 50 delivery centers,providing 200+ languages,7x24 hours delivery capacity,is the best partner for enterprise globalization
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