Jianhu JH-NV Series Nitrogen-Purged Vacuum Oven for Polyimide (PI) Curing
| Brand | Jianhu |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | OEM/ODM Equipment Manufacturer |
| Category | Domestic Industrial Laboratory Oven |
| Model | JH-NV Series |
| Price Range | USD 1,000 – 10,200 (FOB Shanghai) |
Overview
The Jianhu JH-NV Series Nitrogen-Purged Vacuum Oven is an engineered solution for high-reliability thermal processing of oxygen-sensitive and moisture-sensitive advanced materials—particularly polyimide (PI) films, flexible printed circuits (FPCs), semiconductor packaging substrates, and aerospace-grade composites. Designed around a dual-stage vacuum architecture coupled with continuous nitrogen inerting, the system enables precise control of residual oxygen concentration (<5 ppm) and water vapor partial pressure during elevated-temperature curing cycles up to 350 °C. Unlike standard industrial ovens or generic vacuum dryers, the JH-NV series integrates process-critical subsystems—including leak-tight stainless-steel chamber construction, PID-controlled multi-zone heating, real-time O₂ monitoring via electrochemical sensor feedback, and programmable ramp-soak profiles—to meet the stringent thermal history requirements defined in IPC-4101, MIL-STD-202, and ISO 9001-certified manufacturing environments.
Key Features
- Dual-stage vacuum system (mechanical rotary vane pump + optional turbomolecular booster) achieving ultimate vacuum ≤5 × 10⁻² Pa, ensuring rapid degassing and stable vacuum hold during extended PI imidization cycles
- Continuous nitrogen purge with mass flow controller (MFC)-regulated inlet, maintaining dynamic O₂ concentration ≤5 ppm throughout heating, soaking, and cooling phases
- Multi-zone independent temperature control (up to 3 zones) with Class I platinum RTD sensors and ±0.5 °C uniformity across working volume at 350 °C
- Chamber constructed from SUS304L stainless steel with double-gasketed door seal, helium-leak-tested to ≤1 × 10⁻⁸ Pa·m³/s, validated per ASTM E493
- Programmable 30-segment temperature profile controller with data logging (CSV export), alarm thresholds, and hardware interlocks for over-temperature, vacuum loss, and N₂ supply interruption
- Integrated vacuum gauge, O₂ analyzer (0–100 ppm range, ±0.2 ppm resolution), and chamber pressure transducer—all calibrated traceable to NIST standards
Sample Compatibility & Compliance
The JH-NV oven accommodates rigid and flexible substrates up to 600 mm × 600 mm × 300 mm (W×D×H), including PI-coated copper foils, silicon wafers with polyimide passivation layers, ceramic substrates, and carbon-fiber prepregs. It supports both batch-mode curing and R&D-scale process development under controlled inert atmosphere. The system complies with ISO 17025 laboratory accreditation prerequisites for thermal validation, meets mechanical safety requirements per EN 61000-6-2/6-4 (EMC), and incorporates fail-safe design elements aligned with IEC 61508 SIL-2 functional safety principles. Optional IQ/OQ documentation packages are available to support GLP, GMP, and FDA 21 CFR Part 11-compliant environments.
Software & Data Management
Jianhu’s proprietary JH-Control Suite provides local touchscreen HMI operation and optional Ethernet-based remote supervision via Modbus TCP or OPC UA protocols. All thermal and atmospheric parameters—including chamber temperature, vacuum level, O₂ concentration, nitrogen flow rate, and elapsed time—are timestamped and logged at user-defined intervals (1 s to 60 min). Raw data exports as CSV files include calibration metadata and sensor serial numbers. Audit trail functionality records operator login/logout events, parameter modifications, and alarm acknowledgments—fully compliant with ALCOA+ data integrity principles. For integration into MES or LIMS platforms, RESTful API endpoints enable automated retrieval of cycle reports and equipment status.
Applications
- Polyimide film imidization: Achieving full cyclodehydration without oxidative discoloration or surface cracking
- FPC solder mask curing: Preventing copper oxidation during high-Tg resin crosslinking
- MEMS packaging bake-out: Removing adsorbed H₂O and hydrocarbons prior to hermetic sealing
- Li-ion battery electrode drying: Eliminating trace moisture in cathode/anode slurries under inert conditions
- Optoelectronic substrate annealing: Stabilizing organic thin-film transistor (OTFT) layers without ambient degradation
- R&D process qualification: Reproducing thermal profiles required for JEDEC J-STD-020, IPC-TM-650 2.6.26, and NASA-STD-8719.13
FAQ
What vacuum level can the JH-NV series achieve, and how is stability maintained during long-duration PI curing?
The system achieves ≤5 × 10⁻² Pa using a dual-stage vacuum train and maintains stability within ±2% deviation over 24-hour holds, verified by built-in Pirani/capacitance manometer redundancy.
Is oxygen concentration continuously monitored and logged during operation?
Yes—electrochemical O₂ sensors provide real-time feedback at 1-second intervals; all values are stored with timestamps and sensor calibration IDs.
Can the oven be validated for IQ/OQ/PQ according to pharmaceutical or aerospace standards?
Yes—Jianhu provides prequalified templates for IQ/OQ execution, including thermocouple mapping (per ASTM E2251), vacuum decay testing (per ASTM E493), and inert gas purity verification protocols.
Does the system support custom chamber configurations for non-standard substrate geometries?
Yes—modular interior fixtures, adjustable shelf spacing, and optional quartz viewing windows are available upon request.
What after-sales support is offered for international customers?
Jianhu operates certified service centers in Germany, Singapore, and the U.S., with 24/7 remote diagnostics, 48-hour on-site response (ex-works), and lifetime firmware updates included in warranty coverage.
