Graphite Ring Press

How this press is built

At our Dahegam works, the Graphite Ring Press is built to handle continuous batch compaction of backup rings & chevron packings spanning Engineered to client drawing envelope (Build HSE-911). The 336 Ton hydraulic system uses dual-stage pump delivery to balance high-speed idle travel with high-pressure compaction dwell lasting 40 seconds. Digital pressure transducers monitor force stability within ±1%, followed by soft hydraulic decompression that protects delicate component geometry during automated bottom-ram ejection.

Material behaviour under compaction

Designed around the physical compressibility of fine-grain synthetic carbon graphite, this press handles standard free-flow and fine-cut resin grades. Rigid column construction prevents platen tilting during compaction, ensuring that preforms maintain consistent cross-sectional density and predictable sintering shrinkage factors.

Tooling and die design

The press table is configured with precision guide bushings and robust ejector clearance apertures. Tooling sets for backup rings & chevron packings incorporate engineered draft angles and shrinkage compensations to achieve precise post-sinter tolerances.

Sizing and machine selection

For customized quotation of this 336 Ton Graphite Ring Press, please provide part CAD files, material filler percentage, and target shift output. We calculate hydraulic cylinder dimensions, bolster clearances, and power pack ratings to ensure optimal production efficiency.

Quality checks and inspection

Every machine undergoes rigorous inspection at our Gujarat manufacturing plant: an 8-hour continuous hydraulic pressure endurance run, platen parallelism laser verification under full load, and trial pressing of witness samples with green density measurement before factory sign-off.

Installation and commissioning

Each press is delivered with detailed installation plans, electrical schematics, and hydraulic circuit drawings. Experienced engineers provide on-site setup, calibration, and machine operation training.

Export packing and lead time

Our export department provides complete shipping documentation, customs compliance paperwork, and export packaging with corrosion-resistant barrier lining. Electricals are tailored to destination grid standards (415V/50Hz).

Maintenance and spare parts

Preventative maintenance includes 1,000-hour oil filtration checks, regular bronze bushing lubrication, and periodic hydraulic cylinder pressure testing. Spare seal kits, solenoid cartridges, and replacement filter elements are available directly from HEMSUN.

Safety and guarding

Comprehensive safety provisions include optical infrared light curtains, synchronized two-hand start controls, hydraulic ram fall-prevention safety locks, and easily accessible emergency stop switches conforming to industrial safety standards.

Specifications