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Defence CT
CT inspection of castings and turbine blades
BliXray CT systems inspect structural castings and turbine blades from the first article to the production lot. Porosity, shrinkage, residual core and wall thickness are measured in one scan.
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The inspection task
Castings for vehicles, aircraft and structures fail where the casting process left a flaw: gas porosity, shrinkage cavities, cold laps. Turbine blades add hollow geometry – residual ceramic core or a blocked cooling channel cannot be seen from outside. Radiography flattens these into one image; CT places each flaw in the part and measures the walls around it.
Which system, and why
Turbine blades and smaller castings fit BLCT-MICROLAB. Large aluminium and steel castings need BLCT-HPLAB with sources up to 600 kV; for thick steel parts BLCT-LINACLAB penetrates up to 380 mm of steel with a linear accelerator.
Matching machines.
Microfocus laboratory CT BLCT-MICROLAB
- X-ray sources up to 300 kV, optional dual source
- 3D resolution 3 µm
- Parts up to 600 × 600 × 800 mm and 100 kg
- X-ray sources up to 600 kV
- Parts up to 1010 × 1980 mm and 300 kg
- Flat-panel and line detector
- Linear accelerator up to 9 MeV
- Up to 380 mm steel penetration
- Parts up to 1000 kg, installations for parts up to 6 m
Questions and answers
Can CT check cooling channels in a blade?
Yes. The 3D volume shows every channel; residual core and narrowed sections are located and measured.
How thick can a steel part be?
With the linear accelerator of BLCT-LINACLAB, up to 380 mm of steel.
Can porosity be assessed against a standard?
Porosity is measured by size and position; the evaluation follows the acceptance criteria you specify.