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Product

Mosten Alloy Co., Ltd.

Heated molybdenum belt insulation support seat

  • Mosten
  • 11 Oct

Vacuum brazing furnace is a kind of semiconductor devices in high vacuum environment of high temperature brazing equipment, brazing process is: to the welding are the two semiconductor devices on the welding parts, cleaning decontamination, then coated with flux, and covered with solder powder, granular, flake solders), after two docking semiconductor devices, into the brazing furnace material plate; The brazing furnace chamber is vacuumized to make the vacuum degree in the furnace reach the high vacuum state of 10-4Pa; The temperature in the heating furnace makes the temperature of the semiconductor device in the feed plate reach the melting point temperature of the solder, the solder melts, and the welding place of the two semiconductor devices is connected together; The furnace temperature is then lowered to allow the molten solder to solidify, thus completing the welding of the two semiconductor devices.

The working temperature of the brazing furnace cavity is generally up to 1100℃. The temperature control needs to melt the solder, and the welded semiconductor device can not be melted. The temperature and thermal field in the furnace are required to be stable, so as to ensure the quality of brazing. Stable radiant heat field is the condition for high quality brazing. By evenly laying the heating molybdenum foil in the furnace cavity of the brazing furnace, the heating molybdenum foil is passed by three-phase AC current, and the heat radiation after the heating molybdenum strip is energized, the two butt semiconductor devices placed in the middle of the furnace cavity are brazed; Within the vacuum brazing furnace hearth, general Settings have multilayer tubular decorate the reflective screen, within the reflective screen, through the insulation bracket set with molybdenum circular arrangement of heating zone, heat radiation emitted from molybdenum strip after electrify, by furnace cavity closed layout reflector screen reflection, keep it inside the furnace, and do not leak, the cavity to form a relatively stable high temperature thermal field, To meet the requirements of semiconductor device brazing.