Spring steel, the grades of which are applicable in the manufacture of tight products, characterized by the restoration of their original shape, with strong bending and significant twisting.
The most important parts in the manufacture of mechanisms that experience a variable, repetitive load, under the influence of which there is a strong deformation. As soon as the load stops, these elements return to their original shape.
In the work of these parts there is a feature that does not allow residual destruction, it should only be elastic. For spring-spring steels, excessive requirements are imposed in the development.
Spring steels: structural, alloyed, marking and heat treatment
Spring steel, the grades of which are applicable in the manufacture of tight products, characterized by the restoration of their original shape, with strong bending and significant twisting.
The most important parts in the manufacture of mechanisms that experience a variable, repetitive load, under the influence of which there is a strong deformation. As soon as the load stops, these elements return to their original shape.
In the work of these parts there is a feature that does not allow residual destruction, it should only be elastic. For spring-spring steels, excessive requirements are imposed in the development.
Let's figure out what steel the springs are made of? Spring steels: structural, alloyed, marking and heat treatment
What is spring alloy used for?
For the production of parts, both alloy steel and carbon steel can be used, they have increased elasticity, toughness, endurance and ductility. Due to the properties of these types of steel, elastic degradation is limited.
Spring-spring steels are affordable, manufacturable, having a high limit of relaxation resistance.
Interesting: in order to obtain high-quality products from carbon and alloy steel, it is hardened at a temperature of 420-520 degrees, and the effect of the troostite structure is obtained.
Spring-spring steels resist fragile fracture, and are characterized by increased ductility. They are used to produce products with high wear resistance, for example:
clamping collets;
brake rolling;
edges;
springs and springs;
thrust washers;
bearing torsos;
friction discs;
gears.
In fact, any spring steel (non-corrosive, without special anti-corrosion properties) must undergo a strong heating operation using a through method. Therefore, the finished metal products in its section will have the structure of troostite.
Oil hardening at a temperature of 830-880 degrees, combined with tempering at 410-480 degrees, guarantees an increase in the elastic limit - the main working property of the above steels. Often, isothermal hardening is also used, which provides not only high elasticity, but also increased data on the plasticity, stability, and viscosity of the substance.
Alloy 70 and 65 non-corrosive tape and wire are the most commonly used for machine springs. In the automotive sector, silicon spring steels of the spring rolling grade - 60C2A, 70C3A and 55C2 are also dynamically used. They are prone to decarburization, which reduces the characteristics of their elasticity and endurance. But due to the additives of chromium, vanadium and certain components, all these possible dangers are leveled. Stainless spring steel is cheap, with great elasticity, wear resistance, while it does not have temper brittleness. This alloy is not deformed from mechanical loads. Effectively operated at high humidity, as it has a stainless coating. It is used at a temperature of not more than 250 degrees, it is used for the production of rolled metal products.
Stainless steel is used to manufacture equipment in the marine industry, in medicine, and in the food industry. Its use in these industries is due to the corrosion-resistant alloy.
Interesting: resistance is associated with a high content of molybdenum and chromium. The alloy has good resistance to cracking under heavy load.
The brand of stainless heat-resistant steel is used in the production of thin-sheet rolling, seamless pipes and various tools for the food and chemical industries.
Specifics of spring alloys
High- and medium-carbon types of these alloys are hardened by fine cold destruction, which allows the use of shot-blasting and water-jet methods. With this type of impact, the forces of residual compression are directed to the plane of the products.
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