The spring steel belongs to special steel, and the technical requirements are relatively high when making spring, and the excellent technology directly determines the quality.
The burr height of the slitting edge of the spring steel strip is based on the standard of GB/T 13304 "Steel Classification", in accordance with the basic performance and use characteristics.
1.Spring steel belongs to steel for mechanical structure; according to its quality grade, it belongs to special quality steel, that requires strict quality and performance control during the production process.
Medium and small springs, especially helical tension spring, should be given priority to use strengthened steel wire, lead bath isothermal cold drawn steel wire and oil quenched tempered steel wire, which have higher strength and good surface quality, and fatigue performance is higher than ordinary quenched Tempered steel wire, simple processing, good process performance and stable quality.
When determining the cross-sectional shape and size of the spring material, the series of sizes specified by the national and ministerial standards should be selected first, and materials with non-standard series specifications should be avoided as much as possible.
Oil quenched and tempered steel wire is modulated and strengthened after the steel wire is drawn to the specified size.There is basically no residual stress. After the spring being formed, it is tempered at low temperature, small size change, and the heat resistance stability is better than that of cold Pull strengthened steel wire. Carbon spring steel wire and piano steel wire produce large residual stress after cold drawing, large residual stress after processing spring, large dimensional change after tempering, and it is difficult to control dimensional accuracy.
The above are some points that need to be paid attention to when selecting materials for spring steel strips. The material is a very important factor for steel. It will directly affect the performance and use of the steel. If the material is inferior, there may even be some Safety hazards, so no matter what items are purchased in the future, you need to have a full understanding of the materials to avoid problems when using them in the future.
