Can gas brazing be carried out in an electric heating vacuum brazing furnace?

04-23-2025       Author: KJ technology

Electric heating vacuum brazing furnace can perform gas brazing, but it needs to meet certain conditions and make appropriate adjustments. The following is a detailed analysis of this issue:

1. Basic functions of electric heating vacuum brazing furnace

Vacuum environment: The main feature of electric heating vacuum brazing furnace is to perform brazing in a vacuum environment to avoid oxidation and pollution, and improve brazing quality.

Heating function: By using electric heating elements to raise the temperature inside the furnace to the brazing temperature, the brazing connection of materials is achieved.

2. Feasibility of Gas Brazing

Atmosphere control: Although the main design purpose of electric heating vacuum brazing furnaces is to operate in a vacuum environment, many modern vacuum brazing furnaces also have atmosphere control functions. This means that they can introduce specific gases (such as nitrogen, argon, etc.) into the furnace to create an environment suitable for gas brazing.

Process adjustment: When performing gas brazing, it is necessary to make appropriate adjustments to the brazing process, including brazing temperature, holding time, gas flow rate, and atmosphere type.

3. Precautions for gas brazing

Equipment inspection:

Ensure that the electric heating vacuum brazing furnace has atmosphere control function and check whether the relevant gas pipelines and valves are intact.

Check the sealing inside the furnace to prevent gas leakage.

Atmosphere selection:

Select the appropriate atmosphere type (such as nitrogen, argon, etc.) according to the brazing material and process requirements.

Ensure that the gas purity meets the brazing requirements to avoid impurities affecting the quality of brazing.

Process parameter adjustment:

Adjust process parameters such as brazing temperature and holding time according to the characteristics of gas brazing.

Monitor the atmosphere and temperature inside the furnace to ensure the stability and reliability of the brazing process.

Security protection:

When conducting gas brazing, relevant safety operating procedures should be followed to ensure the personal safety of operators.

Equip necessary safety protection facilities, such as gas leak alarm devices, emergency shut-off valves, etc.