Customized high vacuum brazing electric furnace temperature
10-13-2025 Author: KJ technology
The temperature range for customized high vacuum brazing electric furnaces is usually between 750 ℃ and 1600 ℃, depending on the equipment model, heating elements, furnace materials, and process requirements. The following is a detailed explanation of its temperature range:
1. Typical temperature range
Low temperature type (750 ℃ -1200 ℃)
Applicable scenarios: brazing of low melting point metals such as aluminum alloys and copper, as well as low-temperature sintering and heat treatment.
Equipment features:
Heating element: electric heating alloy tube or resistance wire.
Furnace material: stainless steel or ceramic fiber, temperature uniformity can reach ± 5 ℃.
Temperature control accuracy: ± 1 ℃ to ± 5 ℃, supporting multi-stage programming curves.
Case: A certain aluminum based vacuum brazing furnace has a maximum temperature of 750 ℃ and a cold vacuum degree of 10 ⁻ Pa, suitable for welding precision electronic components.
Medium high temperature type (1200 ℃ -1500 ℃)
Applicable scenarios: brazing of stainless steel, titanium alloys, high-temperature alloys, and transition liquid phase diffusion welding (TLP) of single crystal alloy blades.
Equipment features:
Heating element: Molybdenum heating strip or graphite rod, with strong high temperature resistance.
Furnace material: Molybdenum foil or metal insulation screen, with temperature uniformity ranging from ± 3 ℃ to ± 5 ℃.
Temperature control accuracy: ± 1 ℃, supports 51 segment programming curves.
Case: A high-temperature vacuum brazing furnace has a maximum temperature of 1500 ℃, a working temperature of 1400 ℃, and a maximum vacuum degree of 6.0 × 10 ⁻⁴ Pa, suitable for welding aircraft engine components.
Ultra high temperature type (1600 ℃ and above)
Applicable scenarios: brazing of nickel based high-temperature alloys, ceramic metal composite materials, and other extreme conditions.
Equipment features:
Heating element: Silicon molybdenum rod or high-end graphite material, excellent high temperature resistance.
Furnace material: multi-layer metal insulation screen, temperature uniformity ± 5 ℃.
Temperature control accuracy: ± 1 ℃, supporting complex process curves.
Case: A customized ultra-high temperature vacuum brazing furnace can reach a maximum temperature of 1600 ℃ and is suitable for welding nuclear reactor components.
2. Factors affecting temperature range
heating element
The high temperature resistance of materials such as resistance wires, graphite rods, and silicon molybdenum rods directly determines the maximum temperature of the equipment. For example, silicon molybdenum rods can withstand high temperatures of 1700 ℃ and are suitable for ultra-high temperature brazing.
Furnace material
High temperature resistant materials such as stainless steel, tungsten, molybdenum, etc. can ensure that the furnace does not deform or melt at high temperatures. For example, molybdenum foil furnaces are suitable for high temperature environments above 1350 ℃.
vacuum system
The vacuum degree affects the temperature distribution and heating effect inside the furnace. A high vacuum environment (such as a maximum vacuum degree of 6.0 × 10 ⁻⁴ Pa) can reduce gas convection and improve temperature uniformity.
control system
PID controller, multi-stage programming curve and other technologies can accurately control the heating rate, insulation time and cooling rate. For example, a certain device supports 30 segment programming to ensure process stability.
3. Key points of customized temperature design
Process requirement matching
Select the temperature range based on the melting point of the material, the characteristics of the brazing material, and the structure of the welded component. For example, brazing titanium alloys requires controlling the temperature below the melting point of titanium to avoid oxidation.
Temperature uniformity optimization
By controlling temperature in multiple zones and arranging heating elements and temperature sensors reasonably, the temperature distribution inside the furnace is ensured to be uniform. For example, a certain device uses a circular molybdenum heating belt with a temperature uniformity of ± 5 ℃.
Heating and cooling rate control
Set the heating rate based on the characteristics of the welding material. For example, deformable welded components require a slower heating rate to prevent deformation caused by thermal stress.
Safety and reliability
Equipped with functions such as over temperature alarm and trip protection to ensure the safe operation of the equipment. For example, a certain device has a current limiting function to prevent electrical components from being damaged due to unstable power supply voltage.
