Thick-walled
seamless steel pipe fracture test is one way of determining the quality of steel. Oral tablets can be broken with the corresponding lateral macrostructure defect inspection of steel. The fracture can be displayed directly tapping the white spots, inclusions, bubbles, implodes, residual shrinkage and other defects. Size and characteristics identified by the grain fracture can be determined steel overheating or burn cases, it can determine the fracture characteristics of steel (ductile fracture and brittle fracture) and judges steel (parts) of the reasons for fracture (fatigue fracture and stress fracture) and the like.
There are types of fracture; ductile fracture, brittle fracture, fracture porcelain-like layered fracture, (Tu) shaped fracture, stone-like fracture, fracture of graphite and the like. Parts and components and fracture surface in the manufacturing process due to some reasons which led to damage of the workpiece fracture, and do tension, momentum and other tests in the course of broken, no longer need any preparation and processing, can be directly observed and testing of these natural surface direct observation, direct access to information. Thick-walled seamless steel according to the different types and inspection requirements, fracture test specimen before breaking first heat treated in different ways, according to the heat treatment in different ways, can be divided into pro-fire fracture fracture fracture annealing and quenching fracture and the like.
