The vacuum system of multipurpose furnace heat treatment needs to meet the following three basic requirements

The vacuum system of multipurpose furnace heat treatment needs to meet the following three basic requirements

The vacuum system of the vacuum heat treatment furnace needs to meet the following three basic requirements:

1, the vacuum heat treatment furnace can be quickly pumped to the required vacuum degree.

2, should be able to timely discharge the processed workpiece and the furnace structural parts of the continuous release of gas, as well as due to vacuum leakage into the furnace gas.

3, the use of operation, installation, maintenance to be simple, the entire system covers a small area.

Composition of vacuum system

The vacuum system of vacuum heat treatment furnace is generally composed of vacuum pump, vacuum valve, vacuum measuring instrument, cold trap, pipe and other parts. The following describes several common vacuum systems.

1, low vacuum system, suitable for vacuum heat treatment furnace in the vacuum degree of 2-1333Pa range, such as in the case of pumping vacuum furnace more use this system,

2, vacuum system with mechanical booster pump, suitable for vacuum heat treatment furnace with vacuum degree of 1.33-3×10 negative 1Pa range, vacuum quenching furnace widely used this system.

3, high vacuum system and high vacuum system with booster pump, suitable for vacuum heat treatment furnace in the vacuum degree of 1.3×10 negative -2 to 6.6×10 negative 4Pa range, vacuum annealing furnace, vacuum brazing furnace mostly use this system.

Vacuum system selection:

According to the technical conditions of vacuum heat treatment furnace and the required vacuum degree, choose the suitable vacuum pump. Then according to the type and specifications of the vacuum pump, the corresponding vacuum valve, vacuum pipe, etc., so as to form the required vacuum system. Generally, the pumped volume has a certain relationship with the pumping speed of the vacuum pump, when the volume of the vacuum heat treatment furnace is determined, the corresponding pumping rate can be found, and then the vacuum pump is selected.