Petrochemical ring flange forgings are important equipment in petrochemical industry, and their quality and performance are directly related to the safety and stability of the whole process. Pressure resistance is one of the key indexes to evaluate the quality of flange forgings, so it is very important to evaluate it accurately. This paper will introduce the evaluation method of pressure resistance of flange forgings of petrochemical ring parts, in order to provide reference for relevant people.
Evaluation method
Macroscopic inspection: Check the appearance of flange forgings, including surface quality, dimensional accuracy and so on. Ensure compliance with relevant standards and regulations.
Chemical composition analysis: Through spectral analysis and other methods, determine the chemical composition of flange forgings to ensure that it meets the requirements.
Metallographic inspection: The use of metallographic microscope and other equipment to observe the microscopic structure of the flange forgings to determine whether the organization is uniform and dense.
Hardness test: Using a hardness tester to test the hardness of flange forgings to assess the mechanical properties of their materials.
Pressure test: The pressure test of the flange forgings is carried out through the pressure testing machine to determine its leakage and deformation under the specified pressure.
Non-destructive testing: The use of ultrasonic, ray and other non-destructive testing methods to carry out internal quality testing of flange forgings to find possible defects.
The relevant standards and regulations should be followed when evaluating the voltage resistance performance. Domestic commonly used standards include GB/T, JB/T, etc., and international commonly used standards include API, ASME, etc. Specific standards should be selected according to the use of flange forgings, materials and other factors.
When evaluating the voltage resistance performance, the accuracy and reliability of the test equipment should be ensured to avoid errors.
When performing pressure tests, safety operating procedures should be followed to ensure the safety of personnel and equipment.
For the flange forgings whose assessment results do not meet the requirements, the cause analysis should be carried out in time and corresponding measures should be taken to improve them.
The evaluation of pressure resistance of flange forgings of petrochemical ring is one of the important means to ensure its quality. Through the comprehensive evaluation of the flange forgings by macroscopic inspection, chemical composition analysis, metallographic structure inspection, hardness test, pressure test and non-destructive testing, the possible problems can be found effectively and the corresponding improvement can be made.
