Selection core principles
Based on the welding process:
Exothermic welding: Select high-purity isostatic pressure graphite molds (porosity ≤ 5%), resistant to metal penetration, long service life
Diffusion welding / brazing: Select high-density graphite fixtures (density ≥ 1.85g/cm³), with uniform heat conduction, high positioning accuracy
Resistance welding / induction welding: Select high-conductivity graphite blocks (resistivity ≤ 10μΩ・m), which can be used as electrodes themselves
For the selection of welding materials:
High-purity metals / semiconductors: Choose ultra-high purity graphite (ash content ≤ 10 ppm) to avoid contamination
Common metals: Choose ordinary molded graphite, which offers good cost-effectiveness
Alloys containing active elements: Choose silicon carbide-coated graphite to enhance erosion resistance
Huixian Jincheng Abrasive & Graphite Mold Factory
Core Cooperative Advantages of Jin Cheng Abrasive Mold Factory
1. Over 30 years of industry experience: Founded in 1984, specializing in the production of graphite products, with mature and reliable technology
2. Full-process self-production: From raw material selection to finished product processing, there are no intermediate links, ensuring quality control and favorable prices
3. Precision processing capability: CNC numerical control processing center, with dimensional tolerance of ±0.01mm, meeting high-precision welding requirements
4. Rapid response mechanism: The technical team is online 24 hours a day, and the order delivery cycle is 20% faster than the industry average
5. Complete quality system: ISO9001 certification, providing test reports for each batch of products to ensure stable performance
Large enterprise scale
wide application of technology
high-quality customized services
Historical background
It was established in 1984 and has a production history of over 30 years for graphite products. It has rich industry experience and profound technical accumulation.
Product Matrix
Mainly includes graphite crucibles (for gold melting / aluminum melting / copper melting / vacuum furnace-specific), high-purity graphite blocks, graphite rods, graphite molds, etc., covering both conventional and customized requirements.
Process Strength
Utilizing high-purity graphite raw materials (fixed carbon content of 99.9%+), through processes such as isostatic pressing and high-temperature graphitization, to ensure high density, low porosity, and strong thermal shock resistance of the products.
Customization Capabilit
Supports the design and production of special-shaped graphite, and can customize dimensions, wall thickness, coating, etc. according to customer requirements, to meet special working conditions.
Detailed Explanation of Typical Application Scenarios
Power Grounding Heat Dissipation Welding: Using a modular graphite mold, an aluminum thermal reaction generates molten copper liquid, which instantaneously fills the cavity, achieving molecular-level connection of the copper conductor, with the solder joint resistance approaching zero and the service life exceeding 50 years.
Copper Foil Soft Connection Polymer Diffusion Welding: Graphite blocks are used for the compression and heat conduction of multi-layer copper foils, ensuring the tight adhesion and uniform heating of the copper foils, achieving molecular-level diffusion bonding, and improving the electrical conductivity by 20%.
Liquid Cooling Plate Brazing: With a flow channel, the graphite fixture simultaneously performs positioning, heating, and cooling functions, ensuring the brazing quality and increasing production efficiency by 30%.
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