Reduction and vacuum glass melting furnace

Equipment Overview

This equipment combines a “high-temperature atmosphere furnace” and a “gas displacement type glove box apparatus” to melt glass in a reducing atmosphere or vacuum, then remove high-temperature samples, cast them, and prepare samples in a glove box (inert atmosphere) separated from the atmosphere.

Reduction and vacuum glass melting furnace

feature

  • Sample removal (rapid cooling) at temperatures up to 1700°C in an inert atmosphere is possible.
  • Suitable for prototyping non-oxide glass (halide glass, chalcogenite glass, etc.)
  • In addition to glass, it can be applied to the development of materials affected by water vapor partial pressure.

configuration

  • High-temperature atmosphere furnace
  • Tabletop Purge Glove Box
  • Furnace bottom lifting mechanism
  • control panel
Reduction and vacuum glass melting furnace
Atmosphere seal section
Reduction and vacuum glass melting furnace
Glove box section
  Specifications
  Furnace Body
 Normal operating temperature  1600°C
 Maximum Temperature  1700°C
 Inner dimensions of furnace  W150×H180×D150mm
 Furnace opening dimensions  78mm dia.
 Heating element capacity  2.5kW
 Heating element  6 molybdenum disilicide ( MoSi2 )
 Thermocouples  JIS-B 2 pairs (for control and near-sample temperature measurement)
 Temperature rise time  Approx. 8 hours (8 hours with alumina core tube)
 Insulation material  Alumina fiber board
 Sample setting  Furnace bottom raised and lowered by air cylinder
 
  Atmosphere Specifications
 Atmosphere type  Nitrogen + Hydrogen (5%)
 Vacuum: 10 Pa order
 Furnace tube  φ70×φ60×L600mm (high purity alumina)
 Sample vessel  φ28×φ20×H50mm (Graphite crucible)
 Gas introduction  Manual flow meter: 1 each for nitrogen and nitrogen + hydrogen 5%.
 Vacuum, gas replacement  Manual rotary pump Exhaust speed 50L/min
 Attained pressure 6. 7×10-1Pa
 Atmosphere seal  Upper and lower water-cooled manifold (SUS304)
 
  Glove box
 Name  Tabletop Purge Glove Box
 Type  SDB-1
 Dimensions  L750×W550×H560mm
 Side box dimensions  216.3mm dia. x 215mm L
 Material  SUS304
 Inner surface finish  Acid washing
 Internal outlet  AC100V 2 pcs.
 Lighting  20W fluorescent lamp
 
  Control unit
 Shape  Freestanding panel
 Outer dimensions  W700×H1500×D700mm (including casters)
 Power capacity  AC220V 1φ 3.3kVA
 Temperature control method  PID continuous current control method using a combination of program controller and thyristor
 
  Safety mechanism, alarm
 Safety mechanism  Safety valve, explosion-proof vent, pressure sensor, etc.
 Alarms  Over-temperature prevention
 Thyristor failure
 Water cutoff
 Vacuum abnormality
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