In the process of producing cast steel castings, it is possible that some metallurgical defects and castings may occur in the steel castings due to the substandard quality of raw materials, imperfect production management, unreasonable process design or improper process operation, etc. Defects, these defects will affect the internal and external quality of the casting, but also affect the performance of the casting. Therefore, steel casting manufacturers must carry out strict inspections on every step from the raw materials entering the factory to the casting process.

Chemical analysis techniques, testing of mechanical and physical properties of materials, experiments and analysis of metallographic macroscopic and microstructures, and electron-optical metallography. Steel casting manufacturers will use these to inspect steel castings, and test the process performance of castings. The non-destructive testing of finished castings can effectively check whether there are various macroscopic and microstructure defects during the smelting and solidification process of the cast steel, and the subsequent processes. These inspections will also show the shape characteristics of the defects. Location, distribution, size and orientation.

The technical personnel of the steel casting factory will judge the attribute of the defect, the cause of formation and the degree of influence on the quality of the casting according to the chemical composition and mechanical properties of the casting, and the influence of the process performance. It is also possible to study the characteristics and laws of solidification of castings in more depth. When these are found, manufacturers should improve their own pouring, casting, cleaning, smelting and heat treatment technology based on these, and also take measures in terms of quality control. Effective measures to carry out a comprehensive treatment, so as to reduce the severity of defects, ensure the quality of castings, and improve the performance of steel castings in working environments such as high temperature, wear, and corrosion.

In the process of casting production, the defects produced will have a great impact on the process performance and mechanical properties of the castings, etc., if serious, it will also affect the overall quality of the steel castings, resulting in unqualified castings or direct scrap Therefore, the regular steel casting factories will use scientific methods to detect the quality of the products to ensure the performance and service life of the products.