The load characteristic curve reflects the load deformation characteristics of the disc spring. According to the size, the full load and characteristic curve gradually decrease until reaching a horizontal state.
In special circumstances, it can also be designed to deform beyond the horizontal state. Disc springs are typically used as modular components. A set of single disc springs stacked in the same direction is called a stacked combination disc spring; On the contrary, a group of single disc springs are alternately paired in different directions, which is called a combined disc spring stacking combination. In this case, the deformation of the disc spring group is the same as that of a single spring, and the load at a given deformation is N times that of a single spring (N=number of single disc spring pieces in the disc spring group). In the case of a combination, the deformation of the disc spring group is the total deformation of a single spring within the spring group, and the load is the same as that of a single spring. For the deformation and load calculation of composite disc springs composed of single disc springs or spring groups, the above factors should be taken into account.
The disc spring gasket can obtain an increasing load characteristic curve by combining stacked composite springs with different numbers of disc springs or single disc springs with different thicknesses into disc spring groups. In this case, after the spring group reaches the flattened position or ultimate stroke, the single disc spring or combined spring will no longer have an impact on the deformation of the spring group.
Butterfly gasket
How about butterfly washers?
Disc springs, also known as Belleville spring washers, were invented by the French inventor Belleville. Disc washer (DIN6796 DIN2093 DIN2092 DIN6796) (HDS series) is a locking washer designed for bolt and screw connections. It is designed and manufactured according to DIN 6796 for the connection of medium or high-strength bolts and screws.
The high supporting load and elastic recovery make the HDS series very effective. The bolt tension can withstand relaxation caused by wear, creep, relaxation, thermal expansion, contraction of vulnerable parts, or compression of seals. The HDS series increases the elastic effect of screws several times, and it can effectively replace ordinary spring washers, but is not suitable for combination with lock washers and flat washers.
Due to the fact that the HDS series can be paired or stacked with disc springs. The combination of pairing methods can increase the deformation of the disc spring assembly, while the combination of stacking methods can increase the spring force of the disc spring assembly. The ideal installation method is to flatten as much as possible, and the closer to the flattening state, the faster the increase in tension torque. Without the need for a torque wrench, appropriate bolt tension can be obtained.