High-Pressure Injection
Precise media injection into molds, pipes, wells.
What is High-Pressure Injection?
High-pressure injection forces a medium (CO₂, N₂, DME, chemical agent, water) into a target — mold cavity, pipeline, or wellhead — at precisely controlled pressure and flow rate.
In gas-assisted injection molding (GAIM), nitrogen creates hollow channels in thick sections. In physical foaming, CO₂ or butane creates cell structure. In oilfield chemical injection, corrosion inhibitors are pushed into well streams.
Key terms: GAIM (gas-assisted injection molding), physical foaming (using gas as blowing agent), chemical injection skid (metered chemical dosing into pipeline).
Manual vs Electric vs Air-Driven
Drive methods differ sharply in pressure limit, explosion safety, and automation.
| Drive Method | Pressure Limit | Explosion-Proof | Features |
|---|---|---|---|
| Manual pump | ~100 MPa | ✓ (no electricity) | Cheap / labor-intensive / no automation |
| Electric pump | ~300 MPa | Needs Ex motor | Automated / needs power / heat |
| Air-driven pump | ~600 MPa [TBC] | ✓ (pneumatic) | Safe / auto hold / no power |
For high-pressure injection, air-driven = precise + safe + controllable.
SUNCENTER Equipment for This Process
CO₂ Injection Station
Foaming & GAIM, precise flow.
Chemical Injection Skid
Oilfield corrosion inhibitor dosing.
N₂/CO₂ Booster System
Pressure source for injection.
Process Flow Diagram
Flow subject to technical-dept. confirmation
Media prep
Filter & condition injection media.
Boost
Raise to injection pressure.
Inject
Precise flow into mold/pipe/well.
Meter
Record volume & pressure.
Typical Parameters
Values per product manual — for reference only.
| Workpiece | Test / Working Pressure | Recommended Model |
|---|---|---|
| GAIM (N₂) | 10-35MPa | N₂ GAIM station |
| Foaming (CO₂) | 15-70MPa | CO₂ injection station |
| Chemical injection | Per spec [TBC] | Injection skid |
Further Reading
Blog system under construction — titles below are planned.
- GAIM: how nitrogen pressure affects hollow channel qualityTBC
- CO₂ physical foaming: pressure and cell structureTBC
- Chemical injection skid sizing for oilfieldTBC
Need High-Pressure Injection equipment?
Tell us your working conditions and target pressure — our engineers recommend the right model.