The advantages and disadvantages of spring steel and high manganese steel

Spring steel is a steel specially used for manufacturing springs and elastic elements. The elasticity of steel depends on its elastic deformation ability, that is, within the specified range, the ability of elastic deformation makes it withstand a certain load and does not appear after the load is removed. Permanent deformation. Spring steel should have excellent comprehensive properties, such as mechanical properties (especially elastic limit, strength limit, yield strength ratio), anti-reduction properties (ie, anti-regression properties, also known as anti-relaxation properties), fatigue properties, hardenability Physical and chemical properties (heat resistance, low temperature resistance, oxidation resistance, corrosion resistance, etc.). In order to meet the above performance requirements, spring steel has excellent metallurgical quality (high purity and uniformity), good surface quality (strictly controlled surface defects and decarburization), precise shape and size. Spring steel belongs to the steel for mechanical structure; according to quality grade, it belongs to special quality steel, that is, steel that requires particularly strict control of quality and performance in the production process. According to China's custom, spring steel belongs to special steel. When spring steel is manufactured, the technical requirements are relatively high, and the excellent technology directly determines the quality level.

High-manganese steel is a kind of anti-friction steel that is specially used for heavy industry. Its applications include quarrying, mining, excavation, coal industry, foundry and steel industry. After anti-wear treatment, the material surface can reach 500--550 Brinell hardness, maintain internal flexibility, minimize surface friction, use high manganese steel or similar materials for welding, can be cut by acetylene oxygen torch, non-magnetic Wait. In order to ensure the performance of high manganese steel, there must be enough manganese content. When the amount of manganese is too low, a single austenite structure cannot be formed, and an excessively high amount of manganese is also unnecessary. In production, generally, WMn is controlled at 11.0% to 14.0%, and WC is controlled at 0.9% to 1.3%.