Overview
Medium Hardness Graphite Conductive Blocks are engineered components designed for applications requiring a balance of structural integrity and electrical conductivity. Made from high-purity graphite, these blocks are processed to achieve medium hardness, making them suitable for scenarios where both durability and efficient current transfer are critical. Graphite's inherent properties, such as thermal stability and chemical resistance, make these blocks ideal for demanding industrial environments. They are commonly used in electrical discharge machining (EDM), where precise material removal is achieved through controlled spark erosion.
Structure and Working Principle
The blocks are manufactured using isostatic pressing or extrusion techniques to ensure uniform density and minimal porosity. This structure enhances their mechanical strength and electrical performance. The graphite's layered atomic arrangement facilitates electron mobility, enabling efficient conductivity even under high thermal loads. In EDM applications, the conductive block serves as an electrode, transmitting pulsed electrical discharges to erode the workpiece. The medium hardness ensures the block maintains its shape during prolonged use, reducing the frequency of replacements.
Key Features
These graphite blocks offer a unique combination of medium hardness (typically 50-70 Shore hardness) and high electrical conductivity (ranging from 10^4 to 10^5 S/m). Their thermal stability allows operation at temperatures up to 500°C without significant degradation. Additional advantages include low thermal expansion, which minimizes dimensional changes during heating, and excellent machinability, enabling customization into complex shapes. The material's self-lubricating properties further reduce wear in dynamic applications.
Application Areas
Primary applications include EDM electrodes, where they account for over 60% of industrial usage. In metallurgy, they function as conductive components in furnaces and crucibles. The semiconductor industry employs them for wafer processing equipment due to their purity and non-contaminating properties. Emerging uses include battery manufacturing, particularly in lithium-ion production lines, where their stability and conductivity are leveraged for current collection systems. Their resistance to molten metals also makes them suitable for aluminum and copper smelting operations.
Maintenance and Precautions
Regular inspection for surface cracks or erosion is recommended, especially in high-current applications. Cleaning with compressed air or alcohol wipes helps maintain conductivity. Avoid using water-based cleaners that could penetrate porous structures. Storage should be in moisture-controlled environments, as prolonged humidity exposure can increase electrical resistance. When machining blocks, use dust extraction systems to prevent graphite particle inhalation, which may pose respiratory risks.
B2B Procurement Guide
Industrial buyers should specify requirements for density (typically 1.7-1.9 g/cm³), resistivity (under 15 μΩ·m), and flexural strength (minimum 40 MPa). Certifications like ISO 9001 and RoHS compliance are indicators of quality suppliers. Lead times vary from 2-6 weeks for standard sizes, with custom-machined blocks requiring additional time. Bulk purchases (100+ units) often attract 10-20% discounts. For critical applications, request material test reports verifying ash content (<300 ppm) and particle size distribution.
Related Manufacturers
- 主营：石墨板
- 主营：石墨电极、石墨匣钵、石墨舟皿、石墨坩埚、高纯石墨管
- 主营：石墨板、石墨电极、石墨块、石墨匣钵、石墨模具、石墨碳毡、石墨纸、石墨棒、石墨制品
- 主营：鳞片石墨、石墨乳、膨胀石墨、高碳石墨、微粉石墨
- 主营：石墨烯、石墨板、膨胀石墨、高纯石墨、等静压石墨、石墨棒、石墨纸、石墨粉、石墨模具、石墨换热器、石墨管、石墨乳、石墨矿、石墨环、石墨设备、石墨坩埚、石墨块、石墨柱、石墨粒、石墨舟、石墨套、石墨螺丝、石墨片、鳞片石墨、增碳剂
- 主营：铝型材、铝合金、结构钢、石墨板、石墨粉、石墨棒、导电石墨、柔性石墨、石墨坩埚、石墨定制、石墨材料、膨胀石墨、石墨匣钵、石墨电极、国标棒、刹车片、西格里、齿轮钢、不锈钢板、热轧钢板、镁合金棒、国标铝板、防火涂料、铸造涂料、耐火材料
- 主营：溅射靶材、合金靶材、特殊合金、阴极块石墨、高纯材料、试样加工
- 主营：石英砂、石英粉、水洗无烟煤、中华麦饭石、石墨、煤粉、营养土园艺绿化土、高岭土、膨润土、硅藻土、活性白土、远红外粉、电气石、火山石、沸石、粉煤灰、矿粉、炭黑、彩砂、活性炭、水处理磁粉、重晶石粉、碳酸钙、重钙轻钙、鹅卵石
- 主营：导电滑环、集电环、碳刷、碳刷架
- 主营：EMI电磁屏蔽密封条、EMI屏蔽橡胶条、电磁屏蔽条、导电橡胶、导电硅胶、导电硅橡胶、导电屏蔽材料、导电橡胶条、导电硅胶条、导电O型圈、导电橡胶衬垫、导电密封圈、导电密封屏蔽件、导电橡胶板、导电硅胶板、导电橡胶密封件、镍碳导电橡胶条、石墨镀镍导电橡胶板、高导电硅胶O型圈、硅胶O型圈、硅橡胶密封圈、防水橡胶圈、红色密封胶圈、EMI橡胶板
- 主营：低硅铁、硅钡孕育剂、硅钙粉、硅钙块、脱氧剂硅锰块、硅钙合金块、硅钙粒、硅锰合金、硅铝钡、硅铁粒1-3mm、球化剂、硅铁粒3-5mm、硅铝钡钙、冶炼硅锰合金、铸造用硅钡孕育剂、硅铁粒、锰硅合金材料、冶金球化剂、72号硅铁粒、硅锰脱氧合金、硅铝钡钙合金、硅钙合金颗粒、高效硅钡孕育剂、低硅合金铁、硅铝钡精炼剂
- 主营：石墨盒、地质钻石墨制品、石墨块、石墨舟、石墨板、石墨棒、石墨芯片、石墨制品、石墨电极、石墨模具、石墨坩埚、石墨方舟、新能源石墨制品
- 主营：石墨粉、石墨电极、石墨制品、石墨块、石墨换热器、石墨板、石墨棒、废石墨、高纯石墨粉、石墨坩埚、高体密石墨棒、石墨回收、光伏厂废旧石墨回收
- 主营：聚苯板、保温板、外墙保温、石墨板、石墨聚苯板、保温聚苯、白色泡沫、泡沫板外墙、泡沫箱、成型包装、泡沫制品
- 主营：石墨模具、石墨坩埚、石墨板、石墨块、石墨加工件、石墨片、石墨纸、石墨垫、石墨环、石墨筒、石墨套、石墨轴承、石墨制品、石墨电极、石墨螺栓、石墨集束轮、石墨匣钵、石墨异型件、石墨密封件、热弯模具