Quality inspection of Rail Shoulder

Chemical composition analysis: Check whether the chemical composition of raw materials meets the standard requirements, such as carbon (C), manganese (Mn), silicon (Si), phosphorus (P), sulfur (S) and other elements are within the specified range. This can be done by spectral analysis, chemical analysis and other methods.
Physical properties testing: The physical properties of raw materials such as tensile strength, yield strength, elongation and hardness are tested to ensure that they meet production requirements.

Casting process monitoring: In the casting process, the key parameters such as melting temperature, pouring speed and cooling speed are monitored to ensure that there are no porosity, slag inclusion and other defects inside the casting, and the surface quality is good.
Heat treatment process monitoring: Heat treatment is an important step to improve the mechanical properties of castings. In the heat treatment process, it is necessary to strictly control the heating temperature, holding time and cooling method to ensure that the casting reaches the expected hardness and toughness.
Machining process monitoring: In the machining process, the processing size, shape and surface roughness are monitored to ensure that the Rail Shoulder meets the design requirements.

Appearance inspection: Check whether the surface of the Rail Shoulder has cracks, scratches, rust and other defects, and whether the size and shape meet the requirements of the drawing.
Non-destructive testing: non-destructive testing methods such as ultrasonic testing and magnetic particle testing are used to check whether there are porosity, slag inclusion and other defects inside the Rail Shoulder. These testing methods can detect potential quality problems without damaging the product.
Mechanical properties test: tensile test, impact test and other mechanical properties test are carried out on Rail Shoulder to evaluate its bearing capacity and toughness. These tests can simulate the stress of Rail Shoulder in actual use, so as to determine whether it meets the requirements of use.
High-precision detection: With the development of science and technology, some high-precision detection methods are also applied to the detection of Rail Shoulder. For example, in-line inspection of the Rail Shoulder using optical fiber distributed acoustic wave sensing (DAS) allows real-time monitoring of internal defects and damage. This method has the advantages of high precision, distributed and online detection, which can greatly improve the detection efficiency and accuracy.