Can Hybrid Furnace be used for brazing experiments?

Hybrid Furnace is fully capable of conducting brazing experiments. Its modular design and flexible atmosphere control capabilities enable it to meet the brazing needs of various materials such as metals, ceramics, and composite materials. The specific advantages and application scenarios are as follows:

1. Hybrid Furnace supports the core capability of brazing experiments
Multi mode heating and precise temperature control
Tube furnace module: Provides rapid temperature rise and ± 1 ℃ temperature control accuracy, suitable for small-sized samples or experiments that require rapid reaching of brazing temperature.
Box type furnace module: equipped with a large capacity constant temperature zone, with smaller temperature uniformity error, suitable for large-sized samples or batch brazing, and can be controlled by program to achieve multi-stage insulation or cooling rate adjustment.
Joint mode: The collaborative work of tube furnace and box furnace is achieved through program control. For example, after the tube furnace is rapidly heated to the brazing temperature, it is transferred to the box furnace for insulation or cooling, meeting the requirements of complex process flow.
Flexibility in atmosphere control
Supports various atmospheres such as vacuum (with a vacuum degree of up to 10 ⁻³ Pa), nitrogen, argon, hydrogen, etc., which can prevent material oxidation or chemical reactions during brazing process. For example:
Aluminum brazing: Nitrogen gas protection is introduced to prevent the formation of oxide film on the aluminum surface and ensure the wettability of the brazing material.
Stainless steel brazing: using dry hydrogen gas or decomposed ammonia as a reducing atmosphere to reduce oxides in the brazing zone.
Active brazing: Injecting HF gas or using fluorine-containing brazing flux in an inert atmosphere to activate non-metallic surfaces such as ceramics and promote the spreading of brazing materials.
Gradient temperature control and dynamic adjustment
The intelligent temperature control system supports multi-stage programming (such as 2 sets of 16 segments), which can achieve temperature gradient control, segmented insulation or cooling rate adjustment. For example:
Metal ceramic brazing: Optimizing the interface temperature from metal to ceramic through gradient temperature control, reducing thermal stress, and improving joint strength.
Composite material brazing: Control the heating rate to prevent the matrix material (such as boron fiber-reinforced aluminum based composite material) from reacting and forming a brittle layer at high temperatures.

2. Typical application scenarios for brazing experiments
a. Metal material brazing
Aluminum alloy brazing:
Application: Manufacturing aviation structural components, heat exchangers, etc.
Case: Nitrogen gas is introduced into a tube furnace, and Al Si brazing material (liquidus temperature 577 ℃) is used to brazed 6061 aluminum alloy. The joint has a tensile strength of 180MPa, consistent color of the base material, and excellent corrosion resistance.
Hybrid advantage: rapid heating of tube furnace combined with stable insulation of box furnace, avoiding grain coarsening caused by overheating of aluminum alloy; Nitrogen protection prevents oxidation and improves the quality of brazed joints.
Stainless steel brazing:
Application: Manufacturing chemical equipment, food processing machinery, etc.
Case: Dry hydrogen gas is introduced into a box furnace, and BNi-2 nickel based brazing material is used to solder 304 stainless steel. The joint has higher shear strength at 800 ℃ and no oxide inclusions.
Hybrid advantage: The large capacity of the box furnace is suitable for batch processing, and the hydrogen reducing atmosphere ensures low oxygen partial pressure in the brazing zone, improving joint reliability.
b. Brazing of ceramic materials
Aluminum oxide ceramic brazing:
Application: Manufacturing electronic packaging, high-temperature sensors, etc.
Case: Argon gas is introduced into a tube furnace, and Ag Cu Ti active brazing material is used to brazed alumina ceramics and Kovar alloy. The joint has higher shear strength at 25 ℃ and excellent airtightness.
Hybrid advantages: precise temperature control of the tube furnace to avoid ceramic thermal shock cracking, argon gas protection to prevent oxidation of Ti active elements, ensuring sufficient interfacial reaction.
Silicon carbide ceramic brazing:
Application: Manufacturing nuclear reactor structural components, high-speed cutting tools, etc.
Case: Nitrogen is introduced into a box furnace, and Ti Zr Cu Ni active brazing material is used to brazed silicon carbide ceramics and nickel based high-temperature alloys. The joint has higher shear strength at 800 ℃ and good high-temperature stability.
Hybrid advantages: The temperature uniformity of the box furnace ensures uniform reaction between the ceramic and metal interface, and nitrogen protection prevents oxidation of active elements such as Ti and Zr, improving the high-temperature performance of the joint.
c. Composite material brazing
Metal ceramic functionally graded material brazing:
Application: Manufacturing thermal barrier coatings, spacecraft thermal protection systems, etc.
Case: Using the gradient temperature control system of Hybrid Furnace, the temperature is rapidly raised to the brazing temperature in a tube furnace, and then insulated in sections in a box furnace to achieve gradient brazing from nickel based high-temperature alloys to zirconia ceramics. The thermal expansion coefficient of the joint is matched to reduce thermal stress.
Hybrid advantage: Multi segment programming for temperature gradient control, supporting the preparation of complex gradient structures; Atmosphere control prevents material oxidation and ensures interface bonding strength.
Brazing of Fiber Reinforced Ceramic Matrix Composite Materials:
Application: Manufacturing aviation engine turbine blades, brake discs, etc.
Case: Argon gas is introduced into a tube furnace, and Cu Ti brazing material is used to brazed carbon fiber reinforced silicon carbide composite material and titanium alloy. The joint has higher shear strength and lower fiber damage rate at 600 ℃.
Hybrid advantages: precise temperature control of the tube furnace to avoid fiber thermal damage, argon protection to prevent oxidation of Ti active elements, ensuring uniform spreading of brazing materials between fibers and matrix.