The latest independent liquid cold plates require high brazing temperatures (up to 1200 °C and above), smooth brazed surfaces, extremely high hermeticity (≤ 1 × 10⁻⁶ Pa·m³/s, verified by helium mass spectrometer leak testing), high shear strength (≥ 60 MPa), high pressure resistance (≥ 1.5 MPa), and long thermal cycling life. Conventional vacuum brazing furnaces generally struggle to meet these stringent requirements.
New AI Liquid Cold Plate Vacuum Brazing Furnace
To meet customers’ high-quality demands for AI liquid cold plates, our company has specifically developed an AI Liquid Cold Plate Vacuum Brazing Furnace designed for industries such as artificial intelligence and high-density data centers. Its key features include:
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Maximum operating temperature of 1350 °C, fully meeting vacuum brazing process requirements
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Multi-zone temperature control (minimum 3 zones) with temperature uniformity of ±3 °C (segmented measurement from 500–1250 °C)
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Ultimate vacuum of 8 × 10⁻⁴ Pa and working vacuum of 4 × 10⁻⁴ Pa; the vacuum system consists of a mechanical pump + Roots pump + diffusion pump/turbomolecular pump, equipped with dedicated high-vacuum start-up valves and cold traps
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Pressure rise rate ≤ 0.3 Pa/h (after furnace bake-out and degassing), minimizing internal brazing defects
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Inert gas backfilling for rapid cooling, improving product performance and production efficiency
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Customized high-temperature alloy fixtures, ensuring stable clamping and high loading capacity
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Electrical components, instruments, and vacuum systems sourced from leading brands
Proven Performance in AI and Semiconductor Applications
Our AI Liquid Cold Plate Vacuum Brazing Furnace has been applied by well-known AI and semiconductor companies, with customers expressing high satisfaction with the brazing quality of liquid cooling pipes and fittings. This marks a new technological breakthrough by Bonare in the field of high-precision brazing and liquid cooling manufacturing, and we look forward to providing high-performance vacuum brazing equipment and technical solutions for more enterprises in artificial intelligence, big data centers, and 3C electronics industries.
AI Liquid Cold Plate product brazed by our Vacuum Brazing Furnace
AI Liquid Cold Plate Vacuum Brazing Furnace 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 | |
