Disc spring is named for its shape like a bowl or dish. It is composed of four parameters, which include outer diameter (D), inner diameter (d), thickness (t) and height (H). It is a washer type spring with truncated conical section made of metal sheet or forging blank.
For more information, please visit HEGONG SPRING.
The disc spring is a conical annular disc bearing axial load. Generally, the disc thickness is constant, and the load is evenly distributed on the inner edge of the upper surface and the outer edge of the lower surface. It is made of spring steel, which can withstand static load, impact load or dynamic alternating load and can meet the strict requirements of fatigue life.
Disc spring can be divided into anti-loose disc spring, high-temperature preloaded disc spring, high-torque preloaded disc spring and buffered tension disc spring, according to its applications.
It can be applied to bolts with not too large load but severe vibration. Anti-loose disc spring can effectively prevent bolts from loosening and reversing. It can play the locking function, compensating the preload, and ensure the lasting and reliable sealing. It has good versatility for bolts and equipment.
It is applicable to bolt preloading of various flanges under high temperature environment, various pipe flanges, valves and heat exchangers. It is used for pre-tightening of flange bolts of reaction kettle, agitator, pump, centrifuge, etc. High-temperature preloaded disc spring is especially used at bolted joints with temperature difference of more than 100°C.
The high torque preloading disc spring is applied to the occasions of large load and high torque. It is used for pre-tightening of valve and pipe flange bolts. It is used for the pre-tightening of anchor bolts and flanges of fans, pumps and centrifuges, heat exchanger, reactor and agitator, generator, pipe support and hanger device,various other engineering applications of buffer device, brake device, high-voltage cable compensation device and other equipment.
The buffer tension disc spring is widely used in large equipment of various industries, such as brakes, safety overload devices, mechanical starters, industrial furnaces, clutches, molds, etc.
Compared with other types of springs, the deformation energy per unit volume of disc springs is larger. It has good cushioning and shock absorption capacity, especially when the composite combination is used, the effect of absorbing impact and dissipating energy is more significant due to the effect of surface friction resistance.
By changing the ratio of the height of the inner cone in the disc to the thickness of the disc, different spring characteristic curves can be obtained, which can be linear, incremental, decreasing or their combination. In addition, the variable stiffness characteristics can also be obtained by different combinations of discs with different thickness or different number of discs.
Different bearing capacity can be obtained by changing the number of discs or the combination form of discs, so each size of disc can adapt to a wide range of applications, which makes the preparation and management of spare parts easier.
The disc spring correctly designed and manufactured, has a long service life.
Because of these advantages, disc springs are often used as strong cushioning and shock absorption devices in heavy machinery, aircraft, artillery and other machinery or weapons. It is also a pressing device in clutch, safety valve, pressure reducing valve, etc.
The main design parameters of the disc spring in use include load size, load characteristics, corrosivity of the medium, working temperature, pressure pulse increment during preload failure, preload deformation allowed by the equipment to resist damage.
The specific dimension elements of each product are specified in international standards. Main dimensions include outer diameter D, inner diameter d, thickness t, free height H, etc.
According to the working characteristics and material characteristics, the disc spring is mainly divided into four temperature ranges: normal temperature, 150°C, 300°C and 600°C.
The working state of the equipment, such as pre-tightening, stroke, vibration, pulse pressure frequency, frequency spectrum, pre-tightening force and other factors.
The working environment often has clear requirements for the selection of disc springs. The main factors include the corrosivity of the medium, PH value, etc.
Different working pressure of pipes will produce different pulse pressure and thermal expansion and contraction, so it is necessary to judge the selection scheme of disc spring.
Disc spring is used more and more widely, with its high permanence. It has the advantages of , small deformation, large loading capacity, high spatial utilization rate, low maintenance and long service life.
The company is the world’s best disc spring company supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.
The potential combinations of disc springs depend on function and desired force.
Having springs working in tandem is always a challenge, but not when it comes to disc springs.
This type of spring is designed to work together, and the potential combinations for disc springs depend entirely upon the project.
It is extremely important to ensure accuracy in stacking the disc springs. You can do it using either the inside diameter or the outside diameter.
When you stack disc springs, the spring constant, force and travel are changed, depending on the combination.
Normal force, normal travel
Single
greater force, normal travel
Parallel
Normal force, longer travel
Series
greater force, longer travel
Series-Parallel
Which type of disc spring stacking - should I choose?
It depends what you want to get out of your stacking:
- Parallel stacking: Gives greater force - 1 times travel but x times force depending on the number of disc springs on top of one another.
- Series stacking: Gives more travel - 1 times force but x times travel depending on the number of disc springs set against one another.
In series-parallel stacking, there must never be a difference in the number of disc springs per bundle. If a bundle has 1 disc spring less than the other bundles, this bundle will naturally not have the same strength, and will therefore become deformed and broken before the other bundles.
You can expect a loss of force when you use several disc springs together in parallel stacking due to the friction.
Want more information on belleville springs limited? Feel free to contact us.