Structure and selection of the vacuum furnace
Time：2015-07-16 09:04
Vacuum furnace according to the structure can be divided into two kinds of vertical and horizontal line, vertical lift series is divided into bell bottom tray elevating two. Horizontal series is divided into two single door front and rear double door structure structure. Folders are water-cooled furnace wall structure.
Heat insulation chamber all-metal type and complex type two options, all-metal type with heat-resistant stainless steel and molybdenum composition screen; composite heat-resistant stainless steel, molybdenum screen and carbon felt, mullite fibers or silicate fibers components. The choice depends on the user's process conditions and of the process environment.
Heater with nickel chromium wire (belt), molybdenum wire (belt, stick), graphite and other types, the specific choice depends on the maximum temperature required by the user. Distribution methods are heating type heater and full heating two sides to ensure that users type in the furnace temperature uniformity requirements.
There are several types of cooling system outside the loop structure Roots blower, centrifugal fan outer loop structure, cold-wall centrifugal fan inside loop structure, to meet the different cooling speed.
Evacuation system has an ion pump + turbo molecular pump + mechanical pump, a turbo molecular pump + mechanical pump, diffusion pump + roots pump mechanical pump, roots pump mechanical pump, low temperature condensate pumps with mechanical pumps and other types, according to Ultimate vacuum indicator selection (vacuum furnace).
Temperature control using imported intelligent temperature controller, can realize temperature, temperature, cooling automatic control functions; with technology curve storage function, can store many different technology curve; with adjustable ramp speed and accuracy of the clock function, can simultaneously display a variety of parameters of the actual temperature and the set temperature; with PID parameters self operation and power-down protection.
With perfect alarm and protection measures.
With imports of multi-recorder, you can record the entire process of the degree of vacuum, pressure, temperature and other technology curve, ease of process analysis, quality control and production management.
Gauge can choose a highly reliable digital intelligence gauge imported or domestically produced high quality vacuum gauge, to ensure a degree of vacuum and temperature control chain, meet the technical requirements. The entire process is controlled by the importing programmable logic controller (PLC) to complete all actuated by chain protection, with manual and automatic two methods of work, the user can select the full manual mode, you can select multiple industrial group control the way .
This article Source:http://www.lab-furnace.com
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