Vacuum Brazing Furnace/ Brazing Furnace

Product Introduction
The vacuum brazing furnace evacuates the air inside the furnace chamber through a vacuum pump set, creating a high-vacuum environment. This reduces the impact of oxygen, nitrogen, and other gases in the air on the welding process, preventing oxidation of the welded parts. Subsequently, resistance heating elements (such as molybdenum wire , molybdenum ribbon, electrothermal alloy tubes, etc.) are used to heat the workpieces, causing the brazing filler metal to melt at a temperature lower than the melting point of the base material. The molten filler metal then wets and fills the gaps between the base materials, forming a strong joint upon cooling.

Product Features

1. Heating Method: Typically employs resistance heating, which can be categorized into single-temperature zone or multi-temperature zone heating. The multi-temperature zone heating method allows for better control of temperatures in different areas of the furnace chamber, meeting the brazing needs of complex workpieces.

2. Vacuum System: Generally equipped with molecular pump units and mechanical pump units, enabling the furnace chamber to achieve high vacuum levels, such as a cold ultimate vacuum degree of up to 5.0×10⁻⁴ Pa or higher, effectively suppressing material oxidation.

3. Cooling System: Some vacuum brazing furnaces are equipped with efficient forced cooling systems, such as gas cooling systems, with gas cooling pressures reaching 2 bar, 4.5 bar, etc., enabling rapid cooling and enhancing production efficiency.

4. Control System: Mostly utilizes PLC control systems with touch screen operation interfaces, supporting multi-stage program temperature control. It can automatically control the heating, holding, and cooling processes, with simple operation. Additionally, it allows for the export of temperature and vacuum curves, facilitating process optimization and quality monitoring.

Application Fields

1. Refrigeration and Air Conditioning Industry: Primarily used for vacuum brazing of stainless steel plate heat exchangers and aluminum plate heat exchangers, improving the performance and reliability of heat exchangers.

2. Automotive Industry: In the production of components for new energy vehicles, such as battery cooling systems and air conditioning systems, vacuum brazing furnaces can be used for welding aluminum heat exchangers, radiators, etc.

3. Tool Manufacturing Industry: Suitable for vacuum brazing of hard alloy tools, PCD diamond tools, etc., providing high welding strength and clean, aesthetically pleasing workpiece surfaces.

4. Aerospace Industry: Can be used for welding components such as aircraft engine blades and aerospace vehicle structural parts, which are typically made of high-temperature alloys, stainless steel, and other materials with extremely high welding quality requirements. The vacuum brazing furnace meets the precision welding needs of these components.

Technical Parameters