metallographic examination

Metallography is a detection technology in the field of physical and chemical inspection.

Metallography is a detection technology and a research method. For related factories and enterprises, metallographic examination is an indispensable part in the production process; It is the eye to monitor the internal quality of metal products. The metallurgical quality and forging quality of raw materials can be detected, the purity, uniformity and density level of metal materials can be evaluated, and the quality of steel after heat treatment can also be detected, so as to clarify the reasons why mechanical properties are reflected in the structure.

Metallography itself is an important method to study the microstructure of metals and alloys and evaluate the quality of products, and it is also the main means to analyze the defects of metal products during processing and the failure of service parts.

The routine inspection contents of metallographic examination are generally nonmetallic inclusions, microstructure and grain size in steel. , belongs to the macro inspection content, is the symbolic work of metallographic inspection. There are also macro tests (that is, macro tests and fracture tests, etc.). ), mostly used to evaluate the quality level of smelting and forging.

Generally speaking, metallographic examination is easier to do (as an inspector) than to do well (engaged in defect analysis and failure analysis). When the education is not high, you can only be an inspector.