CNC milling & turning: mainstream precision process for contours, cavities, slots and holes for special-shaped graphite tools.
Grinding & polishing: improve surface finish, reduce chipping and sticking for sealing parts and precise molds.
Thread tapping: easy chipping, strictly control cutting parameters for graphite connectors.
Post-treatment: anti-oxidation coating for oxidation resistance; impregnation to seal pores for corrosion resistance.
1. Isostatic Graphite: Isotropic fine-grain graphite with high density, strength and thermal-shock resistance. For semiconductor, PV thermal field, bipolar plates, precision molds and precious-metal crucibles. Purity: 99.9-99.99%, grain 5-20μm. Not for low-cost heavy-duty crude tools.
2. Moulded Graphite: Cost-effective medium-grain graphite. For melting crucibles, graphite boats, sintering fixtures, wear-resistant blocks. Purity: 98-99.5%, grain 20-80μm. Not for ultra-precision semiconductor parts.
3. Vibration-molded Graphite: Large-grain, good thermal conductivity, low cost with poor surface finish. For large metallurgical parts, furnace linings, guide tubes and insulators. Unsuitable for precision cavities and threads.
4. Impregnated Graphite: Pore-sealed for better wear & corrosion resistance, no anti-oxidation improvement. Resin-impregnated: chemical sealing ≤250℃. Metal/antimony-impregnated: dynamic mechanical seals. Not for high-temp sintering & melting.
5. High-purity Graphite ≥99.95%: Ultra-low ash content to avoid workpiece contamination. Applied in PV, semiconductor, battery sintering, precious-metal smelting and lab crucibles.
Select graphite grade based on working temperature, atmosphere, required purity, precision and cost budget.
Isostatic graphite: for high-precision, semiconductor, new energy and precious-metal applications.
Moulded graphite: cost-effective for general melting and sintering tools.
Vibration-molded graphite: for large-size metallurgical components.
Impregnated graphite: for anti-corrosion sealing below 250℃, not for high-temperature sintering. High-purity graphite is required to avoid impurity contamination for battery and semiconductor materials.
Shuangjing Village, Ligezhuang Town, Jiaozhou City, Qingdao City, Shandong Province, China
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