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High-Precision PQ Vacuum Brazing Furnace - Leading China Suppliers & Factory for Complex Component Welding
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High-Precision PQ Vacuum Brazing Furnace - Leading China Suppliers & Factory for Complex Component Welding

The PQ series vacuum brazing furnace is an advanced piece of equipment designed to achieve high-precision connections of metal materials within a vacuum environment. Leveraging non-oxidation heating and the capillary action of liquid brazing metal, this furnace can effectively weld intricate components, such as narrow channels, honeycomb structures, and multi-layer plate fin heat exchangers. By utilizing the high fluidity of brazing metal under vacuum conditions, it ensures robust and airtight connections for complex structural parts, As a leading supplier and factory in China, we provide precision welding solutions suitable for a wide range of materials, guaranteeing high yield and reliability. Our equipment has become essential for high-end manufacturing, with applications spanning aerospace, electronics, semiconductors, nuclear energy, automotive manufacturing, and medical devices. Choose our PQ series vacuum brazing furnace for superior quality and performance in your complex component connections

    01 Characteristics

    Heat the workpiece under different vacuum (10-2~10-6 mbar), remove the adsorbed gas and impurities on the surface of the workpiece, and avoid weld porosity and inclusion defects.

    Multi-zone independent temperature control, combined with PID algorithm, to achieve ±5℃ furnace temperature uniformity, with good temperature control accuracy.

    Through inert gas nitrogen under different cooling pressure, combined with high-speed large flow fan to quickly cool the workpiece, cooling speed is controllable.

    According to the uniqueness and complexity of vacuum brazing process, it is equipped with multiple protection mechanisms to eliminate potential risks from all aspects and multiple dimensions, and fully ensure the safe operation of equipment.

    Support the overall brazing of complex workpieces such as multi-layer laminated sheets, honeycomb structure, small runner (such as heat exchanger fins, rocket nozzle) to achieve high-precision assembly and sealing.

    Can braze the combination of heterogeneous materials, through the gradient transition layer design to alleviate the stress problem caused by the difference in thermal expansion coefficient.

    Choose a flexible opening method of the furnace door according to the customer's on-site requirements (such as the door position left and right direction, automatic or manual opening).

    Integrated PLC, with program controller or computer interface, touch screen, recorder and other real-time monitoring furnace vacuum degree, temperature, pressure and other data, support remote fault diagnosis and process tracing.

    02 Common Specifications
    Model number PQ-65 PQ-80 PQ-130
    Effective working area dimension: Width × height × length (mm) 650×500×1000 800×800×1300 1300×1200×2200
    Working vacuum 10-1~10-6 mbar (optional)
    Temperature Maximum 1320℃ / normal operating temperature 540~1280℃
    Cooling gas medium Nitrogen, Argon (optional)
    Gas cooling pressure 0.87∼2.8 barabs, maximum support 10 barabs (optional)
    Handling weight approx. (Kg) 450 800 2500
    Installed power (KW) 185 350 475
    ※ Support the furnace effective working area size, maximum temperature, working vacuum, gas cooling pressure and other parameters customized according to requirements, to meet the diversified production scenarios.
    03 Frequently Asked Questions
    What working vacuum levels can these furnaces achieve?

    The furnaces can operate under a working vacuum ranging from 10-1 to 10-6 mbar (optional). Heating under these conditions removes adsorbed gas and surface impurities, preventing weld porosity and inclusion defects.

    How does the system ensure temperature uniformity?

    It features multi-zone independent temperature control combined with a PID algorithm to achieve a furnace temperature uniformity of ±5℃, ensuring superior temperature control accuracy.

    What cooling options are available?

    Cooling is achieved using inert gas (Nitrogen or Argon) under controlled pressure (0.87 to 2.8 barabs, up to 10 barabs), paired with a high-speed, large-flow fan for a fully controllable cooling speed.

    Can the furnace handle complex structures and heterogeneous materials?

    Yes. It supports the overall brazing of complex workpieces (like honeycomb structures and heat exchanger fins) and can join heterogeneous materials using a gradient transition layer to reduce thermal expansion stress.

    Are customization options available for specific applications?

    Absolutely. We support customization for effective working area size, maximum operating temperature, working vacuum levels, gas cooling pressure, and other parameters to match your specific production requirements.