Plate Fin Heat Exchanger Vacuum Brazing Furnace

Equipment use:

Plate Fin Heat Exchanger Vacuum Brazing Furnace is mainly used for vacuum brazing of radiators. Main application industries and processes: high vacuum heat treatment of 3D printed metal workpieces and alloy materials; high vacuum brazing of diamond tools; high vacuum degassing of medical X-ray tubes.

Furnace structure:

Horizontal, single chamber, the furnace body adopts double-layer water cooling, and the front door structure. Plate-fin heat exchanger vacuum brazing furnace is composed of furnace body, heating chamber, vacuum system, gas charging system, water cooling system, electric control and power supply system.

Heating system:

1. Heating chamber: It adopts a cylindrical heating chamber structure. The heat shield adopts a multi-layer molybdenum structure, and high-quality 99 corundum ceramics are used between each layer. The heating element is a molybdenum sheet, and the molybdenum sheet evenly surrounds the heat shield to achieve good temperature uniformity. It has long service life, good heat insulation performance, and very little vacuum air release. The outer frame is made of stainless steel (310S) plate material, and multiple reinforcement ribs are welded to ensure no deformation.

2. Heating control: adopts PID intelligent temperature control module design, can edit 30 sections of heating curve, store 20 groups of process formulas, combine with PLC to realize automatic alarm protection functions such as overpressure, overtemperature, overcurrent, etc., 10-inch LCD touch screen display It has the characteristics of convenient operation, powerful function and good stability.

Vacuum system:

1. Vacuum configuration: a compound molecular pump FB-1600 and a rotary vane mechanical pump BSV-60

2. Ultimate vacuum: ≤6.67*10-4Pa (no load, cold state, purified);

3. Working vacuum: ≤6.67*10-3Pa

4. Pressure rise rate: 1Pa/h (after baking, cleaning, no load, cold state)

5. Vacuum measurement: composite vacuum gauge ZDF5227BV01

Measuring range 1.0*105~1.0*10-5Pa

6. Vacuum unit power: 4 KW

7. Advantages: high efficiency, no pollution, low energy consumption, low noise.

Gas system:

Protective atmosphere: high-purity argon. Inflation pressure ≤ 10KPa. Composed of manual ball valve, solenoid valve, explosion-proof valve, trimmer valve, 316L stainless steel pipeline, diffused silicon pressure sensor, electric contact pressure gauge, and rotameter. The system can be filled with cooling gas of different pressures according to different temperature ranges. When the inflation pressure reaches the set point of the upper pressure limit, the system can automatically stop the inflation. With a manual, it is used for high-temperature water cut-off inflation protection.

Cooling system:

The vacuum furnace body, furnace door, vacuum unit, and water-cooled electrodes all need cooling water. The system is distributed to each cooling part by the main water supply pipe, adopts a closed water circulation system, each electrode cooling is equipped with a water flow observer, and the main pipeline is equipped with a water pressure alarm system. The water inlet has a branch connected to the water pipe for emergency use in case of power failure.

Security system:

The safety system includes: water cut-off, over-temperature, heating over-current, rotary vane pump, molecular pump, and the equipment has functions such as self-inspection, fault self-diagnosis, automatic protection, and prevention of misoperation. It also has sound and light alarm prompts and corresponding interlock and interlock protection.

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