Vacuum Brazing Furnace for Water-cooled Plate
- 2026-04-10 01:35
- Brother Furnace
In the rapidly evolving landscape of artificial intelligence and high-density data centers, thermal management has become a critical bottleneck. Modern liquid cold plates now require manufacturing standards that push the limits of traditional metallurgy. To address these challenges, we have developed a specialized Vacuum Brazing Furnace for Water-cooled Plate designed for high-performance, zero-defect production.
The Challenge of Modern Cold Plates
Standard brazing equipment often fails to meet the rigorous specifications required for independent liquid cold plates. Today’s industry demands:
Extreme Hermeticity: Leak rates $\le 1 \times 10^{-6}$ Pa·m³/s (helium mass spectrometer verified).
High Structural Integrity: Shear strength $\ge 60$ MPa and pressure resistance $\ge 1.5$ MPa.
Precision Surfaces: Smooth brazed joints with a long thermal cycling life.
Advanced Technical Features
Our Vacuum Brazing Furnace for Water-cooled Plate is engineered to exceed these requirements through precision control and ultra-clean vacuum environments.
1. Superior Thermal Precision
Maximum Operating Temperature: Up to 1350°C, accommodating the most advanced high-temperature brazing alloys.
Multi-Zone Control: Minimum of 3-zone temperature control ensures a uniformity of $\pm 3$°C (measured from 500–1250°C), eliminating thermal stress and deformation.
2. Ultra-High Vacuum Environment
To prevent oxidation and ensure high-strength joints, the furnace maintains a pristine atmosphere:
Ultimate Vacuum: $8 \times 10^{-4}$ Pa.
Advanced Pumping Stack: A combination of mechanical, Roots, and diffusion/turbomolecular pumps, enhanced by dedicated high-vacuum valves and cold traps.
Stability: A pressure rise rate of $\le 0.3$ Pa/h (post-bake-out) guarantees minimal internal defects.
3. Efficiency & Reliability
Rapid Cooling: Integrated inert gas backfilling speeds up production cycles while optimizing the mechanical properties of the brazed plate.
Specialized Tooling: We provide customized high-temperature alloy fixtures to ensure stable clamping and high loading capacity during the heating cycle.
Premium Components: Critical vacuum systems and electrical instruments are sourced from world-class brands for maximum uptime.
Technical Specifications
| Model | BR-QHM-669 | BR-QHM-8812 |
| Hot Zone Size (W × H × D) | 600 × 600 × 900 mm | 800 × 800 × 1200 mm |
| Maximum Loading Capacity | 800 kg | 1800 kg |
| Maximum Operating Temperature | 1350 °C | |
| Continuous Operating Temperature | ≤ 1300 °C | |
| Power Supply & Rated Power | 380 V, 3-phase; Total power 230 kW; Heating power 180 kW; Rapid cooling fan 15 kW | |
| Furnace Structure | Double-layer water-cooled chamber; Inner shell: SUS304 polished mirror-finish stainless steel; Outer shell: Q345 high-strength carbon steel | |
| Temperature Zones | 3-zone control: front door, rear door, furnace body independently controlled | 4-zone control: front door, rear door, furnace body (2 sections) independently controlled |
| Ultimate Vacuum | 8 × 10⁻⁴ Pa (empty, cold state, after purification) | |
| Working Vacuum | 4 × 10⁻³ Pa (empty, after purification; actual value affected by product outgassing) | |
| Pressure Rise Rate | ≤ 0.3 Pa/h (after sufficient degassing) | |
| Temperature Control Accuracy | ± 1 °C | |
| Temperature Uniformity | ± 3 °C (measured at 500, 700, 850, 1000, 1150, 1250 °C) | |
| Temperature Measurement Method | Type K thermocouples below 1000 °C; temperature ring above 1000 °C | |
| Heating Rate | Adjustable: 0–20 °C/min | |
| Recommended Heating Rate (<1000 °C) | ≤ 10 °C/min | |
| Recommended Heating Rate (1000–1300 °C) | ≤ 5 °C/min | |
| Rapid Cooling System | Nitrogen gas cooling; heat exchanger; 15 kW; cooling pressure 2 bar | |
| Cooling Performance | 500 °C to room temperature in approx. 40–45 minutes | |
| Thermocouples | Control thermocouple: Type S ×1; Over-temperature alarm thermocouple: Type S ×1 | |
| Thermocouple Protection Tube | 99.7% purity alumina (corundum) tube | |
| Heating Elements & Hot Zone | High-temperature molybdenum–lanthanum alloy strips with reinforced edge clamping; no deformation at high temperature | |
| Thermal Insulation | Inner 4 layers of high-purity molybdenum; outer 4 layers of 310S heat-resistant stainless steel | |
| Temperature Control System | EUROTHERM controllers (UK), 0.1 accuracy class; Programmable PID control with up to 50 segments | |
| Power Regulation | Digital power regulator modules with precise voltage control and current limiting protection | |
| Control & Protection | Linear current output; phase-angle triggered anti-parallel thyristors; over-temperature and thermocouple break alarm | |
| Electrical Components | Schneider, ABB and other first-tier international brands | |
| Human–Machine Interface (HMI) | 15-inch LCD touchscreen; programmable; 512 MB memory; built-in Ethernet; expandable wireless networking; mobile APP remote control | |
| Vacuum System | Mechanical pump + Roots pump + diffusion pump (imported brands); diffusion pump equipped with dedicated high-vacuum valve and cold trap; 304 stainless steel vacuum piping with flexible connections; composite digital vacuum gauges | |
| Gas Circuit | One inlet and one outlet; overpressure solenoid valve auto-opening; parallel mechanical pressure relief valve as backup | |
| Water Cooling System | Stainless steel pipelines, pressure-resistant and explosion-proof; water pressure, flow, and temperature monitoring with audible and visual alarms | |
| Loading / Unloading | Automatic charging trolley with customized fixtures | |
