750 ℃ low-temperature aluminum brazing vacuum furnace
01-26-2026 Author: KJ technology
The 750 ℃ low-temperature aluminum brazing vacuum furnace is a vacuum brazing equipment designed specifically for low melting point materials such as aluminum alloys. Its core feature is to achieve high-quality welding through a vacuum environment and precise temperature control. The following is an introduction from three aspects: technical characteristics, application scenarios, and equipment advantages:
Commonly used aluminum brazing vacuum (click on the image to view product details)
1. Technical characteristics
Accurate temperature control
The maximum working temperature reaches 750 ℃, with a temperature control accuracy of ± 1 ℃, which can accurately control the melting of the brazing material and the bonding process of the base material, avoiding material performance degradation caused by overheating.
Adopting multi zone heating and temperature control technology (such as 7-zone temperature control) to ensure temperature uniformity within the heating zone of ≤± 5 ℃, ensuring consistent welding quality.
Optimization of Vacuum Environment
The ultimate vacuum degree reaches 0.0001Pa, and the working vacuum degree is 10 ⁻² -10 ⁻³ Pa, effectively reducing metal oxidation and pollution during the welding process, and improving the strength and corrosion resistance of the joint.
Equipped with mechanical pumps, diffusion pumps and other vacuum systems, it can quickly draw the required vacuum degree for the process and shorten the production cycle.
Efficient cooling system
By using high-purity nitrogen forced cooling or external rapid cooling system, the brazing temperature can be reduced to 180 ℃ in less than 1 hour, significantly improving production efficiency.
The cooling process is controllable to avoid deformation of the workpiece caused by thermal stress.
Structural and material adaptation
The furnace is made of stainless steel or ceramic fiber materials, which have high temperature resistance and excellent insulation performance, reducing energy consumption.
The heating element is made of resistance wire or molybdenum heating strip, with long service life and uniform heating, suitable for the characteristics of low melting point materials such as aluminum alloy.
2. Application scenarios
Welding of aluminum alloy products
Widely used in vacuum brazing of automotive air conditioning evaporators, condensers, aluminum heat exchangers, radiators, and other components to ensure welding sealing and heat exchange efficiency.
For example, the mass production of aluminum radiators such as car water tanks, oil coolers, and intercoolers relies on their high-precision welding to achieve long-term stable operation.
Aerospace field
Used for connecting aircraft components such as millimeter wave antennas, waveguides, cold plates, etc., to meet their stringent requirements for material integrity and high-quality welding.
Vacuum environment avoids oxidation and ensures the reliability of components under extreme conditions.
Electronics and Precision Manufacturing
Suitable for precision welding of small electronic components, such as hard alloy cutting tools, drilling bits, stainless steel brazing, etc., to enhance product performance and lifespan.
For example, the manufacturing of diamond cutting tools and PCD/PCBN cutting tools relies on their low-temperature brazing technology to avoid high-temperature damage to materials.
new energy industry
Used for connecting battery electrodes and wires, such as in the fields of photovoltaics, wind energy, and electric vehicles, to ensure the high efficiency and stability of battery packs.
Vacuum brazing reduces pollution and extends battery life.
Production aluminum brazing vacuum (click on the picture to view product details)
3. Equipment advantages
High welding quality
Vacuum environment eliminates oxidation and pollution, significantly improves joint strength and toughness, and has better sealing and corrosion resistance than traditional welding methods.
Uniform temperature field and precise temperature control to avoid material performance degradation caused by local overheating.
Energy-efficient
Rapid heating and efficient heating systems shorten process time and reduce energy consumption.
The external rapid cooling system reduces cooling time, improves production efficiency, and is suitable for large-scale continuous production.
Multifunctionality and adaptability
Suitable for various materials such as aluminum alloy, stainless steel, titanium alloy, etc., to meet the needs of different industries.
It can handle complex shaped workpieces, such as honeycomb structures, sandwich components, etc., expanding its application range.
Improvement of mechanical performance
The microstructure of the welded joint is uniform and dense, and it performs better when subjected to high temperature and high pressure.
Reduce the width of the heat affected zone, decrease the deformation and residual stress of the base material, and improve the overall performance of the workpiece.
