Characteristics and Classification of Brazing Furnace

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1. Features

The brazing furnace has precise and reasonable heating furnace partitions, high-precision advanced temperature control instrument hardware selection and software parameter adjustment, the furnace temperature control accuracy is extremely high (±1℃), and the temperature uniformity of the brazing zone is within ±2℃ , To ensure the sensitive and critical temperature requirements required for brazing. Brazing in a vacuum atmosphere can keep the workpiece clean and bright.

2. Classification

In fact, there are many types of brazing furnaces such as: copper brazing furnaces, aluminum brazing furnaces, mesh belt brazing furnaces, vacuum brazing furnaces, NB continuous brazing furnaces, continuous drying furnaces, power-adjusting voltage control systems , HB continuous brazing furnace, JNB periodic brazing furnace, XNB periodic box brazing furnace, etc.

3. Vacuum brazing furnace

It is a large-scale heat treatment equipment, capable of vacuum brazing, vacuum annealing, vacuum aging and other processing. Multiple different programs can be programmed, hundreds of heat treatment curve points can be controlled and programmed, divided into six zones, up, down, left and right, and front and back for temperature control. There are multi-point and single-point temperature recorders and over-temperature protection devices, and the furnace temperature is uniform The performance can be controlled within ±3℃, and it is equipped with a high-purity nitrogen and high-flow forced cooling device. The equipment has a large furnace capacity and high efficiency, and does not require supplementary processing products for complex parts and parts with special requirements.

4. Application

Mainly used for vacuum brazing of aluminum products such as aluminum alloy heat exchangers, brazing of stainless steel, titanium alloys, hard alloys, high temperature alloys, non-ferrous metals, and vacuum tempering of high-speed steel, tool steel, bearing steel, stainless steel and other materials , As well as the aging and annealing treatment of non-ferrous metals, and the vacuum brazing of stainless steel heat exchangers, oil coolers, and stainless steel vacuum cups.

5. Working Principle

The vacuum system of the vacuum brazing furnace equipment is mainly composed of a vacuum chamber, a pump system, various control valves and a heat exchanger. The pump system consists of mechanical pumps, maintenance pumps, roots pumps, and diffusion pumps. The valve consists of a fore-stage valve (butterfly valve), a bypass valve (butterfly valve), a maintenance pump valve (butterfly valve) and a high valve (plate valve). Each valve is a pneumatic valve and is controlled by a PLC controlled pneumatic valve.

Learn more:

High Temperature Vacuum Brazing Furnace

Low Temperature Vacuum Brazing Furnace

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