Hot Isostatic Pressing (HIP) is a procedure that combines forming and densification, employing heated gas under extremely high pressure. In contrast to mechanical force, which compresses a workpiece from one or two sides, isostatic pressure is uniformly applied on all sides, effectively eliminating porosity without altering its overall shape.
Artificial graphite, derived from petroleum, is a composite utilized in various applications that demand properties surpassing those of natural graphite. Our graphite machining workshop employs multiple methods for synthesizing graphite, each of which alters the physical characteristics of the end product. By making minor adjustments to the manufacturing process, a versatile range of graphite can be generated, catering to a broad spectrum of applications.
The most robust synthetic graphites are produced through a technique known as Hot Isostatic Pressing (HIP). This method renders it ideal for applications in solar energy, LEDs, semiconductors, Electrical Discharge Machining (EDM), the glass industry, and chemicals. HIP transforms powder in the solid state into fully dense components, resulting in superior physical properties compared to traditional melting or press and sinter manufacturing methods. HIP involves a forming and densification process that utilizes heated gas under extremely high pressure. Unlike mechanical force, which compresses a workpiece from one or two sides, isostatic pressure is uniformly applied on all sides, eliminating porosity without altering its overall shape.
Extrusion is a manufacturing process that results in the production of coarse-grain graphite. While it may be more cost-effective than isostatic graphite, it still maintains low electrical resistivity and boasts excellent thermal shock resistance. This makes extruded graphite an optimal choice for applications that do not demand high strength, stringent tolerances, or intricate detail work. Commonly employed in the production of electrodes for furnaces involved in recycled steel manufacturing, extruded graphite provides a practical solution for scenarios where its specific properties align with the requirements of the application.
Vibration moulding is a graphite moulding process that forms graphite powder into large cross-sectional shapes. Vibrating, or shaking, graphite within large containers induces compaction of the powder into a solid form. Vibration moulded graphite is primarily used to manufacture electrodes for the steel industry. YIDA do not currently offer this kind of course grain graphite.