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STG Capabilities

Specialist joining technologies supporting internal UKAEA development, high-tech industry and research institutions globally

Vacuum Brazing / Heat Treatment

3 Vacuum Furnaces

Working volume:
Up to 1.4 x 0.9 x 0.7m

Maximum temperature:
Up to 1190C

Vacuum pressure:
<1E-5mBar (cold), <1E-3mBar (peak)

Vacuum quality:
Leak up rate <5microns/h (<6E-3mBar/h). Suitable for titanium.

Partial pressure options:
~0.1mBar Nitrogen or Argon

Hot-zones:
All-metal molybdenum / graphite

Options:
Fully programmable, residual gas analysis, 3-point calibrated thermocouple, calibrated pressure gauge, thermal uniformity survey

Vacuum Brazing / Heat Treatment

Diffusion Bonding

2x 500C diffusion bonding furnaces

Working volume:
Up to 200mm diameter x 300mm length

Maximum temperature & load:
Up to 500C at 5000kg load

Vacuum pressure:
<1E-5mBar (cold), <1E-3mBar (peak)

Vacuum quality:
Leak up rate <5microns/h (<6E-3mBar/h). Suitable for titanium.

Partial pressure options:
None

Hot-zones:
All-metal molybdenum

Options:
Residual gas analysis, 3-point calibrated thermocouple, calibrated pressure gauge, thermal uniformity survey

Electron Beam Welding

2x Electron beam welders (60kV)

Working volume:
Up to 500mm length scale

Maximum power:
3kW (50mA @ 60kV)

Vacuum pressure:
<1E-5mBar (cold), <1E-3mBar (peak)

Vacuum quality:
Suitable for titanium.

Options:
CNC weld patterns, residual gas analysis, 3-point calibrated thermocouple, calibrated pressure gauge

Air Furnaces

3x air furnaces

Working volume:
Up to W 300 x L 450 x H 600 mm

Maximum temperature:
Up to 1100C

Options:
3-point calibrated thermocouple, thermal uniformity

Thin Film Coating

1x Electron beam evaporator, 1x Magnetron sputterer

Working volume:
Up to 300mm dia x 30mm height

Coating materials:
Titanium, Gold, Aluminium, Copper, Nickel (many more on request)

Coating thickness:
Up to 10 microns

Vacuum pressure:
<1E-5mBar

Vacuum quality:
Suitable for titanium.

Options:
Ar ion sputtering, multi-layer coatings, residual gas analysis, calibrated pressure gauge

Other manufacturing

RF brazing / localised heating

Spot welding

Orbital TIG welding (Swagelok M200)

Assembly in ISO clean room conditions

RF Vacuum Brazing

Testing

Helium leak testing – Ambient or elevated temperatures

Thermal cycling – 300C in air or 1100C in vacuum

High heat flux testing by EB or RF heating

Optical stress bi-refringence / polarisation

Bespoke solutions – Thermal shock

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