X-ray 3D Dimension Measuring Machines Testing

Accurate inspection is carried out for X-ray 3D dimension measuring machines in line with relevant metrological standards, covering core performance indicators including measurement precision, resolution, repeatability, positioning accuracy, diffraction angle precision and intensity accuracy of the measuring equipment or analyzer. Comparative measurement with standard workpieces and verification tests on standard samples help evaluate equipment performance in industrial inspection, material analysis and product quality control, ensuring compliance with technical requirements from precision manufacturing, aerospace and scientific research sectors.

Inspection Items

Full detection dimension error, detection dimension error, detection shape error, length measurement error, verification and calibration for X-ray 3D dimension measuring machines

Inspection Standards

1. ZDS FB 0065 Calibration Method for X-ray 3D Dimension Measuring Machines

2. GB/T 34874.3-2017 Geometrical Product Specifications (GPS) - X-ray 3D Dimension Measuring Machines - Part 3: Acceptance and reverification tests, Clause 7.2.3.3

3. GB/T 34874.3-2017 Geometrical Product Specifications (GPS) - X-ray 3D Dimension Measuring Machines - Part 3: Acceptance and reverification tests

Inspection Equipment

X-ray measurement system/analyzer, standard gauge blocks/samples, coordinate measuring machine, precision calibration device, computer data processing system, radiation protection equipment

Key Indicators and Inspection Requirements

1. Tube voltage: error ≤±5%

2. Tube current: error ≤±10%

3. Exposure time: error ≤±5%

4. Penetration capacity: capable of resolving standard test blocks

5. Resolution: ≥2.0 LP/mm

6. Radiation leakage: ≤2.5 μSv/h (measured at 5 cm distance)

Inspection Methods and Implementation Points

1. Inspection conducted in accordance with JJG 40-2019

2. Tube voltage test: 5-point sampling with a high voltage divider

3. Tube current test: measured with a current clamp meter

4. Penetration capacity test: verified using standard steel test blocks

5. Resolution test: completed via imaging of test patterns

6. Radiation test: multi-point measurement with a dosimeter

Precautions

1. Operators shall hold valid certificates and wear personal dosimeters

2. Warning signs shall be posted in the working area

3. Reliable equipment earthing is required

4. Check the cooling system before testing

5. Raise voltage gradually during startup

6. Turn off high voltage after inspection completion