DIN6796 Butterfly Washers Characteristics Classification and Applications Industrial Solutions

DIN 6796 is a German standard disc spring washer, also known as German standard disc spring washers.DIN 6796 is a disc spring washer that can be combined in pairs or stacked. DIN 6796 is a kind of lock washer for bolts and screws connection; we used to call them disc elastic washers or conical elastic washers, mainly used for medium or high-strength bolts and screws connection, such as CL8.8/10.9 grade, which can effectively replace the ordinary spring washers. Standard materials are spring steel and stainless steel A2 and A4; commonly used specifications cover M2-M30, hardness requirements: 420HV-510HV, DIN6796 spring steel surface treatment is mainly non-electrolytic zinc flake coatings such as GEO, and mechanical galvanization. In addition, since DIN 6796 is high-hardness spring steel, it is not recommended to use it to avoid hydrogen embrittlement, and galvanizing is not available. The corrosion resistance of the washers depends on the thickness of the coating, the storage environment, and the operating environment. Still, the adhesion of the coating depends on the transportation conditions. In general, mechanical galvanizing has relatively good adhesion of the layer.

Disc-shaped elastic washer principle solution

DIN6796 disc-shaped elastic washers is a conical structure of the washer in the bolt, nut connection subassembly by the axial load, resulting in deformation and storage of axial tension potential when the nut or bolt loosening; the washer rebound to release the possibility to play the role of anti-loosening. The visible DIN6796 design principle eliminates the bolt and nut in the assembly of the adverse effects of loosening, which plays a locking effect. Conical elastic washers are suitable for axial bolt and nut connection loads. They are used to connect medium or high-strength bolts and screws. Support load and elastic recovery make the HDS series very effective; bolt tension can withstand the following factors caused by relaxation: wear and tear of wear parts, creep, relaxation, thermal expansion, contraction, or compression of seals.

The difference between disc spring and disc washer solution

Disc springs and disc washers are conical elastic fasteners, usually made of spring steel, used to bear the axial force. Unlike wave spring washers, disc spring and disk washers can generate more force in a relatively small area. Both are characterized by high life, low deflection, and high load-carrying capacity. Some people think that DIN 6769 is the German standard disc spring, but this statement is wrong; DIN 6769 is essentially a kind of anti-loosening washer, all known as bolts with conical elastic washers, and DIN 2093 for disc spring washers. That is to say that the two are a spring washer and a washer; although the washer has elasticity, the actual use of the environment and working conditions requires a big difference. Disc washers are pressed flat their load for the bolt load of 70-90%, suitable for 8.8-12.9 grade high-strength bolts, and is the perfect choice for bolt connection.

The advantages of disc washers and the characteristics of the solution

Disc washers have high axial load, high life, and high load drop (caused by temperature difference) compensation, effectively reducing the negative impact of dynamic load, anti-loosening locking, high elasticity, load concentration uniformity, security, and other advantages. Because disc spring washers have anti-loosening, anti-vibration effects, low manufacturing cost, easy to install, and other characteristics, more and more fields use disc spring washers, including automotive, electric power, construction, machine tools, aerospace, defense systems, medical equipment, and other industries, etc. 60Si2MnA disc spring washers are widely used, mainly used in automobiles, tractor vibration damping leaf springs, coil springs, cylinder safety valve springs, check valve springs, etc. mainly used in automobiles, tractor shock absorbing plate spring, coil springs, cylinder safety valve springs, check valve springs, and so on. It is also used for the production of essential springs and anti-wear springs, which are subjected to alternating loads and work under high stress.

The classification of disc washers industrial solutions

1. DIN 6796 Disc washers are designed to be used as lock washers for bolt and screw connections. After the bolts and screws are connected, it plays a compensating role in preventing the relaxation of tension, wear and tear, creep, thermal expansion, contraction of wearing parts, and compression of seals. So that the elasticity of the screw role increased several times, it can effectively replace the ordinary spring washers but does not apply to lock washers or flat washers combination.

2. High-torque disc spring washers have a temperature range of -200 ~ 300 ℃. High-torque disc washers have more muscular elastic tension and are used in the anti-loosening fastening joint equipment of high-speed railcars with intense power loads. High-torque disc washers are widely used and are a kind of high-torque anti-loosening function washers used with bolts, suitable for high-strength rigid connection design.

3. Ultra-high torque disc spring washers temperature range of -200 ℃ ~ 600 ℃. Ultra-high torsion disc spring washers made of high-temperature resistant materials can play an influential compensating role in the temperature range so that the bolt preload on the gasket to maintain a specific range, thus preventing bolt fatigue and gasket failure, but also significantly improve the maintenance cycle of the equipment. High-torque disc springs can effectively absorb mechanical vibration to avoid the loosening of bolts caused by mechanical vibration and to ensure that the seal is durable and reliable.

Disc spring washers are classified according to the torque range and different roles. They can be divided into VS and S series disc spring lock washers, bearing preload disc washers, flange gaskets, etc. If you want to select the correct disc spring washers, you can contact Juxin Fasteners. We have professional designers who can help you determine the specific conditions for using disc spring washers.

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