German febrotec springs febrotec models febrotec prices

febrotec springs are helical springs that withstand axial tensile forces. Extension springs are generally manufactured from materials with a circular cross-section. When not under load, the coils of an extension spring are typically close-wound with no gaps. Many different end fittings or "hooks" are used to ensure the source of tensile force for the extension spring. The working principle of extension springs is opposite to that of compression springs. Compression springs exert a reactive force when compressed, whereas extension springs exert a reactive force when extended or pulled apart. When the two ends of an extension spring are pulled apart, the spring attempts to pull them back together. Like compression springs, extension springs also absorb and store energy. However, unlike compression springs, most extension springs are usually under a certain degree of initial tension, even when there is no external load. This initial tension determines the tightness of the extension spring's coils when there is no load.

febrotec spring introduction

Designed based on the principle of moment balance. Within the permissible load displacement, the load moment and the spring moment always remain in equilibrium. For pipes and equipment supported by constant-force hangers, a constant supporting force is provided during displacement, thereby avoiding additional stress on the piping and equipment. Constant-force hangers are generally used in locations where displacement stress needs to be reduced, such as suspended parts of power plant boiler bodies, steam, water, flue gas, and air ducts in power plants, burners, as well as in the petroleum and chemical industries where such support is required. It is a mechanical component that operates using elasticity. Components made of elastic material deform under external force and return to their original shape after the external force is removed. Also referred to as "springs." They are generally made from spring steel. Springs come in complex and diverse types; classified by shape, they mainly include helical springs, spiral torsion springs, leaf springs, and special-shaped springs.

febrotec spring composition

A ring spring is a type of compression spring composed of several inner and outer rings with conical surfaces. Under axial load P, significant normal pressure is generated between the contact surfaces of the inner and outer rings, causing the diameter of the inner ring to decrease and the diameter of the outer ring to increase. Due to these changes in the diameters of the inner and outer rings, the length of the spring is shortened. When the external force is removed, since the cone angle b of the rings is greater than the friction angle, the spring returns to its original dimensions under the action of elastic internal forces. When a ring spring bears axial P, significant frictional force is generated between the conical contact surfaces of the inner and outer rings, dissipating a large amount of energy. At this time, the relationship between force and deformation remains linear. During the loading process, the external force P equals the sum of the spring's internal elastic force and the frictional force. ABO represents the unloading process, which includes two stages: the AB stage and the BO stage. The AB stage indicates the situation where the load decreases, and the spring's elastic internal force overcomes static friction, gradually restoring the spring to its original state. The inner and outer rings of the ring spring are made of high-quality carbon steel or wear-resistant alloy steel. Each ring is first roll-formed to the required profile to enhance its load-bearing capacity, and then heat-treated. Ring springs are heavy-duty springs with significant buffering and shock-absorption capabilities (the ratio of area OABO to OACO can reach 60～70%). They are commonly used in buffering devices for heavy vehicles, artillery, and aircraft landing gear.

febrotec spring classification

1) ISO international standard type: ISO gas springs are the most common typical type among gas springs. All technical parameters comply with the ISO11901 gas spring international standard and Chinese national standards; B type gas springs also comply with the gas spring standards of companies such as FORD-WDX3560 (Ford), GM-M-150 (General Motors), and Renault (Renault). 2) Compact structure type: The compact structure type is also called J type gas spring, which is one of the product series of gas springs, fully named J type compact structure gas spring. The J type compact structure gas spring is a type widely welcomed by mold designers. Compared with the B series gas springs, it has a shorter cylinder base length, resulting in a shorter overall length, which can reduce the design height of the mold, making it one of the preferred choices for mold-specific gas springs. 3) Ultra-compact type: This is the model with the shortest base length among gas springs worldwide. At the same time, its outer diameter is one grade smaller than other types of gas springs (except for the T type extra-slim structure type), but the piston rod diameter is the same, resulting in a small size with high force. The C type gas spring performs no worse than the ISO standard type gas spring in all aspects when the required working stroke is not too long. 4) Extra-slim structure type: This is the most compact type in terms of cylinder diameter among gas springs. It features a piston seal design, and its outer diameter is even smaller than that of the ultra-compact type. The working stroke of the H type gas spring series generally does not exceed 50mm, and its performance in all aspects is no inferior to that of the C type gas spring.

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