Vacuum furnace control
Vacuum furnace is widely used in heat treatment process, and its capacity and size vary greatly. Over the past 30 years, equipment has been continuously improved and vacuum treatment has become a widely used technology in aerospace and automotive industries. Vacuum is considered to be any pressure below atmospheric pressure and can be expressed in torr, micron or millibar in industrial applications.
Effect of Vacuum
The effect of vacuum treatment elements is twofold:
1. In the middle and high vacuum region, the partial pressure of residual air in the furnace, especially the partial pressure of O-H O, decreases significantly, which provides an environment for processing parts with little or no oxidation on the surface.
2. Depending on the temperature and material type, the oxides on the surface of components may decompose.
Vacuum furnaces adopt a variety of mechanical forms, including common components, such as:
Workpiece chambers or multi-chambers are usually equipped with water-cooled sleeves, loading and transfer mechanisms.
A heat insulating plate made of graphite or high temperature materials.
Furnaces are made of graphite or other high-temperature materials.
Heating elements are usually graphite or molybdenum or high-temperature materials, with temperatures above 1000 degrees Celsius.
Vacuum extraction system
Partial pressure control
Optional fan-assisted circulation system for lower temperature range
Quenching Vessel and/or Gas/Fan Quenching System
With the integration of heat treatment into the multi-unit layout of workshop production and manufacturing, the concept of unit in vacuum processing is becoming more and more widely.