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What is vacuum brazing furnace

Vacuum brazing, refers to the workpiece heated in a vacuum chamber, mainly used for high quality products and oxidizable materials welding. The vacuum brazing furnace includes a pressure vessel with a cylindrical side wall and a door whose size and position are designed to close one end of the cylindrical side wall. The workpiece handling system is mounted on the pressure vessel door to support metal parts for heat treatment or brazing. The workpiece processing system includes a device that enables the workpiece to rotate during processing. The vacuum system can be connected to the workpiece so that the pressure inside the workpiece is less than atmospheric pressure during brazing.


What is vacuum brazing furnace

vacuum brazing furnace


Vacuum brazing application:

Aircraft engine
 The engine honeycomb sealing ring is made of ring and honeycomb sandwich by vacuum brazing; the fuel main pipe of the engine is composed of a pipe and a plurality of branch pipes and nozzles by vacuum brazing; the engine stainless steel heat exchanger consists of more than 300 stainless steel pipes, baffles and shells by vacuum brazing; the vacuum brazing furnace is made of aeroengine. Main brazing equipment.
 construction machinery
 Vacuum brazing small and medium bit is an example, small and medium bit is widely used in metallurgy, geology, coal, water conservancy, railway, military and other construction undertakings. According to statistics, in 1978, about 10,000 small and medium-sized bits were consumed nationwide, and the current consumption is even greater, playing an important role in the national economic construction.
 Vehicles and vehicles
 The vacuum brazed plate fin oil cooler is used for vehicles and ships. Plate-fin oil cooler has the characteristics of high heat transfer efficiency, compact structure and light weight. It is a new generation of diesel engine cooler and has been widely used in automobile, tractor, marine diesel engine and other fields.
 Nowadays, there are more than 20 vacuum brazing parts on a car, which shows that vacuum brazing technology has great effect, good effect and wide application.
 Air separation equipment
 The heat exchanger is mainly used for the preparation of oxygen, nitrogen, argon and rare gases. In the past, plate-fin heat exchangers were mainly made by salt bath impregnation and brazing. This technology not only consumes a lot, but also has strong corrosiveness, serious environmental pollution, high production cost and low product life. Vacuum brazing has many advantages over salt bath brazing, so the development trend is that vacuum brazing will replace salt solution brazing.
 The success of vacuum brazing impeller greatly improves the manufacturing precision of narrow channel impeller in this factory, which not only ensures the design performance index, but also reduces the manufacturing cost and shortens the production cycle. The breakdown of vacuum brazing impeller manufacturing technology will play an important role in promoting the technical progress of China's air separation equipment industry.
 petrochemical industry
 Vacuum brazing is widely used in petrochemical industry to manufacture floor fin heat exchangers, such as: (1) gas recovery in petrochemical refineries; (2) separation and recovery of natural gas and coke oven gas; (3) liquefaction of natural gas and petroleum gas. The plate fin heat exchanger has the advantages of large throughput, good separation effect, low energy consumption and high purity. Therefore, all countries in the world attach great importance to the development of vacuum brazed plate fin heat exchanger technology.
 Other aspects
Vacuum brazing technology is used in locomotive radiator, compressor intercooler, freon and alkane, olefin refrigeration system, excavator oil cooler, gas turbine regenerator, high-power transformer radiator, and household appliances, such as vacuum brazing household air conditioner and various electric heater heat exchanger core bars.

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