Radiography of welding is a non-destructive testing method that uses X-rays or gamma rays to inspect the internal quality of welds. The goal of radiography is to detect and evaluate internal defects such as voids, cracks, and inclusions that cannot be seen from the surface of the weld.
The process of radiography involves the following steps:
Preparation
Clean the surface of the weld and prepare it for radiography. The surface may need to be covered with a protective coating to prevent damage from the radiation.
Radiation source
Choose the appropriate radiation source, such as X-rays or gamma rays, based on the thickness and material of the weld and the desired level of detail.
Film placement
Place a radiation-sensitive film or plate behind the weld and position the radiation source on the other side of the weld.
Exposure
Expose the film or plate to the radiation for a specified period of time, allowing the radiation to pass through the weld and create an image on the film or plate.
Processing
Develop the film or plate to reveal the internal structure of the weld.
Interpretation
Interpret the radiographic image to determine the quality of the weld and identify any internal defects.
Reporting
Provide a written report of the radiographic inspection results, including any findings and recommendations for repair or improvement.
Radiography of welding is an effective method for ensuring the quality and integrity of welds and is widely used in many industries, including aerospace, nuclear, and petrochemical. However, it can be time-consuming and expensive, and requires trained personnel and specialized equipment.
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