X-ray inspection process

Viewing light
The brightness of the viewing light should be at least capable of observing the negative film with a blackness of 4.0, and the diffusing illuminance of the viewing window is adjustable, and a visor is provided, which shields the glare from observing or transmitting light.

Blackness meter and calibration blackness film
The blackness meter error is less than or equal to 0.05, the blackness meter is calibrated at least once every six months, and the blackness meter is sent at least once every two years.

Developer
The developer formulation for manual washing, development time and temperature, etc., should meet the requirements of the film manufacturer's instructions.

Surface preparation and radiographic detection timing of the part to be inspected
1. The remaining height of the same butt joint should be uniform within the allowable range to ensure that the blackness of the film is within the specified range.
2. The surface quality of the butt joint shall be inspected by the inspector and approved by the non-destructive testing personnel.
3. Radiation testing should be performed after welding. For materials with a tendency to delay cracking, at least 24 hours after welding, the radiation should be detected.

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