The operating temperature of aluminum brazing vacuum furnace

07-03-2025       Author: KJ technology

The operating temperature range of aluminum brazing vacuum furnace is relatively wide. The maximum working temperature of conventional models is between 650 ℃ and 750 ℃, and some high-temperature models can reach 1300 ℃ to 1700 ℃, depending on the equipment model, design, and process requirements. The following is a detailed explanation:

Conventional model temperature range

Typical temperature parameters: The maximum operating temperature of most aluminum brazing vacuum furnaces is between 650 ℃ and 750 ℃. For example, the effective heating zone size of a certain model of vacuum aluminum brazing furnace is 600 × 200 × 2 × 500mm, the furnace loading capacity can reach 200kg, the heating power is 120kW, and the maximum temperature can reach 750 ℃. However, the actual working temperature is usually set at around 650 ℃ to meet the requirements of aluminum brazing process.

Temperature uniformity: Aluminum brazing requires extremely high temperature uniformity (generally not exceeding ± 3 ℃), so equipment often adopts zone heating design. Small furnaces usually use 3-4 zone heating, while large furnaces require 6-12 zones to meet the precision requirements for brazing thin-walled parts.

High temperature model temperature range

Expanding the upper temperature limit: Some high-temperature vacuum brazing furnaces can increase their maximum operating temperature to 1300 ℃ to 1700 ℃ by optimizing insulation screen materials (such as molybdenum metal), heating elements (such as graphite or high-temperature molybdenum strips), and cooling systems. For example, a certain model of 1700 ℃ automatic vacuum aluminum brazing furnace adopts a special filtering system, which can effectively eliminate the volatile flux at high temperatures, and is suitable for brazing high-temperature alloy parts such as engine blades and stainless steel heat exchangers.

Application areas: High temperature models not only support aluminum brazing, but can also handle materials such as stainless steel, titanium alloys, and hard alloys, meeting the needs of aerospace, energy equipment, and other fields for high-temperature vacuum brazing and heat treatment.

Temperature control accuracy

Temperature control requirements: The aluminum brazing vacuum furnace should be heated strictly according to the process curve, and the temperature control accuracy is usually required to be within ± 3 ℃. The device achieves independent temperature control in multiple zones through an intelligent temperature controller (such as the Eurofins 2704 model) to ensure temperature uniformity.

Heating rate: Within the temperature range of 400-600 ℃, the equipment needs to have rapid heating capability (maximum heating rate up to 100 ℃/min) to meet the heating efficiency requirements of aluminum brazing.