Special Purpose Machines
HEMSUN ENGG. INDUSTRIES engineers custom Special Purpose Machines, hydrostatic pressure testing rigs, and automated assembly stands at our Dahegam (Gujarat) works. Browse machine types and testing parameters below.
Working principle and engineering architecture
The engineering principles behind Special Purpose Machines combine multi-axis electro-hydraulic and servo-pneumatic motion control, high-pressure hydrostatic intensifier circuits (testing up to 1,000 bar), automated seal clamping, digital pressure transducers (0.1% accuracy), and PLC/SCADA data acquisition with automatic part pass/fail marking and traceability logging.
Hydrostatic testing rigs utilize multi-stage filling circuits with high-flow prefill pumps for rapid air evacuation, transitioning automatically to air-driven or hydraulic intensifiers for high-pressure dwell holding. Transducer telemetry samples pressure decay at 100 Hz, identifying micro-leaks below 0.1 bar/min. Automated safety containment guards with dual interlocks prevent machine operation until hydraulic locking pins are fully engaged.
Types & Configurations We Build
Sizing and capacity calculations
Special Purpose Machines integrates heavy-duty structural frames, electro-hydraulic and servo-pneumatic motion control, automated component loading shuttles, and digital transducer data acquisition. Designed to automate complex testing, pressing, crimping, and assembly operations with 100% data traceability and zero defect escape.
Sizing & Tonnage Calculations:
Hydrostatic clamping force is calculated to prevent seal separation during maximum hydraulic test pressure:
Formula: Clamp Force (Ton) = (Bore Area in cm² × Test Pressure in bar / 1000) × 1.30 Safety Factor
Example: For a 200 mm (8-inch) valve body hydrostatic test at 350 bar (Area = 314.16 cm²), required clamping cylinder tonnage is 143 Ton to maintain a leak-tight seal.
Technical specifications and machine parameters
| Parameter / Specification | Standard Range / Feature |
|---|---|
| Machine Type | Special Purpose Machines (Custom SPM & Test Automation) |
| Operating / Test Pressure | Up to 1,000 bar (15,000 psi) Hydrostatic / Pneumatic |
| Automation & Control | Siemens S7-1200 / Mitsubishi PLC with Industrial Touchscreen |
| Cycle Time Capacity | Automated 15 to 60 Second Inspection / Assembly Cycles |
| Data Acquisition | Digital Pressure Transducers (0.1% FS Accuracy) with SCADA Export |
| Safety Interlocks | Category-4 Optical Light Curtains & Interlocked Safety Enclosures |
| Manufacturing Origin | Manufactured, Assembled & Tested in Dahegam, Gandhinagar, Gujarat, India |
Material compatibility and engineering metallurgy
- High-Pressure Forged Steel Manifolds: AISI 4140 block manifolds with high-pressure SAE 4-bolt flange ports and Zero-Leak check valves.
- Stainless Steel Wetted Components: SS-316/304 test chambers, pressure piping, and water immersion tanks for corrosion-free hydro testing.
- Polyurethane & Viton High-Pressure Seals: Heavy-duty elastomeric sealing faces rated for 1,000+ bar repetitive clamping cycles.
- Stress-Relieved Heavy Frame Steel: Rigid welded structural steel frames machined on large CNC plano-millers to eliminate deflection.
Procurement and tooling selection guide
Technical selection criteria for automated machinery:
- Testing Pressure Envelope: Specify test media (demineralized water, hydraulic oil, compressed air) and maximum proof pressure.
- Automation & Cycle Time: Choose manual load vs automated multi-station rotary indexing tables with pneumatic pick-and-place.
- Data Logging & Calibration: Integrate digital pressure transducers with calibration certificates and USB/Ethernet SCADA export.
- Safety & Containment: Ensure interlocked polycarbonate or steel test chamber guards with Category-4 safety interlocks.
Testing, inspection and global commissioning
HEMSUN ENGG. INDUSTRIES conducts full FAT witness pressure holding and cycle testing at our Dahegam facility. Our field engineers oversee foundation mounting, utility piping connection, PLC network integration, and operator training.
Frequently Asked Questions
What does HEMSUN list under Special Purpose Machines?
Browse Special Purpose Machines from HEMSUN, India — compression moulding machines, PTFE parts, hydraulic presses, tooling and custom OEM/ODM.
Can I request a quote from the Special Purpose Machines catalog page?
Yes. Use the contact page or RFQ buttons on detail pages. Include part drawing, size list, or machine tonnage target so our engineering team can respond with scope and lead time.
Does HEMSUN export products listed in Special Purpose Machines?
Yes. IEC-registered export documentation is available for qualified orders worldwide. Domestic buyers receive GST invoice and standard dispatch documentation.