PRODUCT CATEGORIES

Vacuum Heat Treatment Furnace

Vacuum Sintering Furnace

Vacuum Brazing Furnace

Vacuum Annealing Furnace Manufacturer & Applications

Vacuum annealing is one of the important processes of vacuum heat treatment, and the vacuum annealing furnace is a very commonly used equipment for vacuum annealing. The most critical technology in the heating process of the vacuum annealing furnace is temperature control. The accuracy of temperature control directly affects the quality of the workpiece. Therefore, based on the existing temperature control methods of vacuum annealing furnaces, it is of great significance to study new and advanced temperature control strategies to improve the quality of workpieces.
The temperature control process of the vacuum annealing furnace is complex and changeable, and phenomena such as time lag, strong interference, strong coupling, and nonlinearity often occur, which increases the difficulty of temperature control.

The temperature control strategy is specifically to complete the online setting of the PID parameters of each temperature zone of the vacuum annealing furnace by designing a single temperature zone fuzzy neural network PID controller, and then use the pre-feedback decoupling method to realize the decoupling control of the multi-temperature zones of the annealing furnace, and finally achieve Multi-temperature zone temperature control of annealing furnace.

According to the control requirements, the control system uses industrial computers, PLCs, power regulators, thermocouples, etc. to form the vacuum annealing furnace heating system, and combines the multi-temperature zone temperature control strategy designed in the host computer software to realize the temperature control of the annealing furnace; through the C# language The vacuum annealing furnace upper monitoring system is designed and developed under the VS2012 independent development environment to realize the functions of real-time display of system working conditions and dynamic data, historical data query, historical curve display, fault alarm and other functions.

Vacuum annealing is mainly used for the annealing of refractory metals such as tungsten, molybdenum, niobium, tantalum, vanadium, zirconium and their alloys that are chemically active and easily oxidize and absorb at high temperatures; annealing of titanium and titanium alloys; electrical steel, silicon steel sheets, Annealing of soft magnetic alloys such as iron-nickel series and iron-aluminum series; bright annealing of copper and copper alloy strips and wires; annealing of nickel-chromium wires, high-purity nickel wires, nickel-silver wires and precision alloys; precision casting and Annealing of precision forgings; elimination of work hardening and stress relief annealing of sheet stampings and deep-drawn parts with high surface requirements.
The surface brightness of the workpiece after vacuum annealing is related to the annealing temperature and the degree of vacuum used. Practice has proved that under the condition of a certain degree of vacuum, as the annealing temperature increases, the brightness of the workpiece surface also increases. Therefore, in order to obtain ideal surface brightness when vacuum annealing is performed on various metal materials, a higher degree of vacuum is usually used when the annealing temperature is low; when the annealing temperature is high, a slightly lower degree of vacuum is used.