Belleville spring washers are produced from 300 series stainless steel. In most applications, this alloy provides good corrosion resistance for Belleville spring washers. In addition, according to ASTM A967 (replaces the QQ-P-35 standard), the gaskets of Lisbring Spring Company are passivated to remove dirt and improve corrosion resistance. The 300 series stainless steel has trace magnetism. It is recommended that this series of stainless steel be used in any application where the temperature does not exceed 500° F (260° C).
By combining Belleville spring washers in different sequences, additional load flexibility can be obtained. As shown in the figure below, there are four main ways to use Belleville spring washers:
Single washer: one washer
Laminated combination: All washers are arranged side by side
Into combination: All washers are arranged in opposite directions
Compound combination: the combination of superimposed combination and inverse combination
Each Belleville washer has a specific load for a specific deformation. Under the same deformation, the load generated by two superimposed combination Belleville spring washers is twice the load of one washer; three superimposed combination washers will produce 3 times the load; four superimposed combination washers will produce 4 times the load Load, and so on. In the other case, under the same load, the deformation of two inverted combination Belleville spring washers is twice that of a washer; three inverted combination washers will produce 3 times the deformation; four inverted combinations The washer will deform by 4 times, and so on. Therefore, different composite combinations will produce different load and deformation effects. Therefore, the designer can:
• Stacking combination to increase load
• Combination to increase deformation
• The way to adjust the load and deformation of the washer is: by adding or reducing the washer, or by changing the arrangement of the washer superimposed or inverse combination.