The disc spring dry goods are here, take them without thanks!

 　  The disc spring (belleville spring), also known as Belleville spring washer, was invented over 100 years ago by J. Belleville in France. In the early 1930s, engineers (G.M.) Almen and Laszio developed the theory and established the production and quality standards DIN 2092 and DIN 2093. As an industrial standard for disc springs, it has been accepted worldwide and is prevalent in Europe. Currently, they are widely adopted by many multinational companies.

    The disc spring is a conical ring-shaped disk that bears axial loads. The thickness of the disk is generally constant, and the load is evenly distributed on the inner edge of the upper surface and the outer edge of the lower surface. Disc springs are usually made of spring steel and can withstand static loads, impact loads, or dynamic alternating loads, meeting strict requirements for fatigue life and load loss.

　　Advantages of Disc Springs

　　Short stroke, small deformation, large load capacity

　　Compared with other types of springs, it has a higher space utilization rate.

　　Different spring combinations can achieve the desired load characteristic curve.

　　Various special materials and surface coating methods can be used.

　　Easy to maintain and replace, with high economic safety.

　　Long service life, as the disc spring is annular, the force is concentrated and transmitted in a concentric manner.

Disc springs can bear large loads in a small space. Compared with other types of springs, the deformation per unit volume can be larger. They have good cushioning and shock absorption capabilities, especially when using stacked combinations, where the effect of absorbing shocks and dissipating energy is more significant due to surface friction resistance.

　  High-temperature preloaded disc springs are gradually adopted by various production enterprises due to their advantages of small space occupation, convenient installation and use, strong preload compensation ability, and safety and reliability. They are widely used in equipment flanges, pipeline flanges, and valves in industries such as electric power, steel, chemical, machinery, mining, and petrochemicals. They are particularly suitable for bolt preloading of various flanges in high-temperature environments.

　　Disc springs mainly rely on preload deformation to prevent loosening. From the working principle, the thicker the disc spring, the greater the tension provided and the greater the resistance to pulse pressure. The thinner it is, the greater the free height-to-thickness ratio, allowing for greater deformation. Since the tensile force determined by thickness is inversely proportional to deformation, this presents a contradiction; when the tension or deformation provided by a single disc spring cannot meet the working conditions, it can be resolved by combining disc springs.

　 Advantages of Disc Springs Compared to Cylindrical Helical Springs

　　1. The load deformation characteristic curve is nonlinear.

　　2. Disc springs are sheet-like, easy to form into components, can be assembled and replaced like building blocks, and are convenient for maintenance.

　　3. The stiffness of disc springs with radial grooves is zero. This characteristic can be used in situations where the spring force remains basically stable within a certain deformation range.

　　4. The damping performance is not lower than that of cylindrical helical springs. When using stacked combinations, due to the friction between disc springs, there is significant damping, dissipating impact energy.