As the core parts of petrochemical industry, the quality and performance of petrochemical forgings have an important impact on the operation safety and service life of equipment. In order to ensure the quality of petrochemical forgings is stable and reliable, it is necessary to carry out comprehensive testing. This paper will discuss the detection technology and standards of petrochemical forgings in order to improve the detection efficiency and accuracy and ensure the safe operation of petrochemical equipment.
Detection technology of petrochemical forgings
Ultrasonic testing: Ultrasonic testing is a commonly used non-destructive testing method, suitable for detecting cracks, pores and other defects inside petrochemical forgings. By transmitting ultrasonic waves and receiving their reflected signals, it is possible to determine whether there are defects inside the forging, and to locate and quantitatively evaluate it.
Magnetic particle testing: Magnetic particle testing is a non-destructive testing method suitable for detecting surface and near-surface defects in forgings. By applying magnetic field to the forging surface and scattering magnetic powder, the accumulation of magnetic powder at the defect can be observed, so as to judge the location and size of the defect.
Liquid penetration testing: Liquid penetration testing is a method of detecting surface opening defects in forgings. By applying osmotic solution containing fluorescent agent or dye on the surface of the forging, and applying developer after cleaning, the fluorescence or stain traces at the defect can be observed, so as to judge the location and shape of the defect.
X-ray testing: X-ray testing is a non-destructive testing method suitable for detecting internal defects in forgings. By emitting X-rays or gamma rays and receiving their transmitted signals, the internal structure of the forgings can be observed and analyzed to determine whether there are defects.
Metallographic testing: Metallographic testing is a method of assessing the quality and performance of forgings by observing and analyzing their microstructure. By preparing the metallographic sample and observing its microstructure, grain size, phase distribution and other characteristics under the microscope, it can be judged whether the material and heat treatment state of the forging meet the requirements.
In order to ensure the quality and performance of petrochemical forgings are stable and reliable, corresponding testing standards need to be followed. Common petrochemical forgings testing standards include:
International standards: such as ISO, ASTM, etc., these standards provide requirements and testing methods on petrochemical forgings material, size, mechanical properties, chemical composition, etc.
National standards: such as GB, JB, etc., these standards according to the characteristics and needs of the domestic petrochemical industry, the quality and performance of petrochemical forgings are specified in detail and the detection method is explained.
Enterprise standards: Some large petrochemical companies may develop more stringent petrochemical forgings testing standards according to their own equipment and process requirements to ensure the safe operation of equipment.
Through the discussion of the testing technology and standard of petrochemical forgings, it can be seen that comprehensive and accurate testing is one of the key links to ensure the stable and reliable quality and performance of petrochemical forgings. In the future, with the continuous progress of science and technology and innovation, the detection technology of petrochemical forgings will develop in the direction of more efficient, more intelligent and more environmentally friendly to meet the higher requirements for equipment safety and service life of the petrochemical industry. At the same time, strengthening the exchange and cooperation of international standards is also one of the important ways to promote the development of petrochemical forgings testing technology.
