"Railway Rail Weld Defectoscopy (MP; UT) Service" is a specialized inspection and quality control service offered by our company for railway infrastructure projects. This service involves the use of advanced non-destructive testing (NDT) techniques, particularly Magnetic Particle Testing (MP) and Ultrasonic Testing (UT), to detect and assess any flaws or defects in welded rail seams. Below is detailed information about this service:

Magnetic Particle Test (MP):

Principle: Magnetic particle inspection is a non-destructive testing method used to detect surface and near-surface defects in ferromagnetic materials such as steel rails. It is based on the principle that magnetic particles are attracted to areas of magnetic field disturbance caused by defects.

Process: During MP testing, a magnetic field is created on the rail and fine magnetic particles (usually iron filings or iron solution) are applied to the surface. Any cuts or cracks in the welded rail seam cause magnetic particles to be attracted to and collect around the defect, making it visible.

Applications: The MP test is effective for identifying surface cracks, porosity, and other defects in welded rail seams. It is often used for regular inspections and quality control during railway maintenance and construction projects.

Ultrasound Test (UT):

Principle: Ultrasonic Testing is a non-destructive testing method that uses high-frequency sound waves to detect internal and subsurface defects in materials.

Process: UT involves the use of an ultrasonic transducer that sends high-frequency sound waves into the rail. These sound waves travel through the material and when they encounter a defect or boundary, some of the waves are reflected back to the transducer. The time it takes for the waves to return and their amplitude are analyzed to determine the location and size of the defects.

Applications: UT is particularly useful for detecting internal defects such as delaminations, voids and inclusions in rail welds. It provides a more comprehensive assessment of the structural integrity of the railway.