Horizontal Tempering Vacuum Furnace – Type B5_R

The B5_R range is an horizontal tempering and low-temperature heat treatments furnace.

  • 450 x 450 x 600 mm – 1000 x 1000 x 1800 mm

    Model

    Chamber dimensions (W x H x D) mm

    Load (kg)

    B53R

    450 x 450 x 600

    200

    B54R

    600 x 600 x 900

    600

    B55cR

    900 x 700 x 900

    800

    B55R

    900 x 700 x 1200

    1000

    B56R

    1000 x 1000 x 1500

    1500

    B56R180

    1000 x 1000 x 1800

    2000

  • 200 – 2000 kg
  • Mineral wool with stainless steel / Inconel / CFC
  • GRAPHTIL® man-machine interface
  • 10^-2 mbar
  • Max 750°C, 900°C (option: B5_RHT)
  • Cooling pressure: 1,2 bar abs
  • Forced convection heating under inert gas pressure
  • Tempering
  • Annealing
  • Ageing
  • Stress relieving
  • ALLNIT® low-pressure nitriding
  • Nitrocarburising
  • *COOLPLUS* sub-zero treatment

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+33 (0)4 74 94 34 44

info@bmi-fours.fr

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DETAILED DESCRIPTION

B5_R, vacuum furnace for low-temperature heat treatments

The BMI vacuum furnaces of the B5_R family are designed for main low-temperature heat treatments and are often the perfect supplement to B8_T or VSE8_T hardening furnaces. These furnaces are particularly well suited to inert gas convection treatments after vacuum purge such as: tempering, annealing, ageing, stress relieving…

B5_R is a vacuum furnace ensuring excellent uniformity in temperature and reduced cycle times at the same time while respecting the surface integrity of parts to be treated. This BMI furnace has a low static load and a strong insulation significantly reducing energy consumption and thereby treatment costs.

In addition, the vacuum furnaces of the B5_R family can be provided with the ALLNIT® Low-Pressure Nitriding option that can also be supplemented with the ALLNIT-OX® post-oxidation process.

The *COOL PLUS* cryogenic process, developed and patented by our sister company SCHMETZ, is available as an option in B5_R. This treatment offers numerous advantages: *COOL PLUS* reduces the rate of residual austenite while increasing the hardness and dimensional stability of treated parts, which additionally retain their exceptional brilliance due to the total absence of condensation after cold exposure. This "sub-zero" treatment process, particularly well suited to treatment of stainless steels, high-speed steels and tools, takes place between the quenching and tempering cycles.

HIGH TEMPERATURE TEMPERING UP TO 900°C (B5_RHT)

In the production of high value-added components, more and more steel grades require thermal treatment under inert gas convection, with temperatures up to 900°C (tempering, annealing, magnetic annealing, ageing...).

For those specific applications, BMI improved its existing B5_R furnace and developed the high temperature version, B5_RHT. Download the B5_RHT brochure to learn more.

Download PDF

Additional options

Pumping unit:
  • Primary pump + roots (standard)
  • Dry vacuum pump 
  • Diffusion pump
Peripherals:
  • Chilled water system
  • Gas buffer tank
  • Electric / manual loadingcarriage
  • Automation of the installation
  • Washing machine
  • Grids, baskets, fixtures