German friedrich hartmann springs, friedrich hartmann models, friedrich hartmann prices

friedrich hartmann springs are elastic elements with multiple peaks and valleys on a thin metal ring. They are typically used in applications where the load and deformation are small, requiring low spring stiffness and the application of axial preload. Wave springs are particularly suitable for weight-sensitive applications and those constrained by limited installation space. Typical application areas include aerospace, precision machinery, hydraulic sealing, and high-end motors. These are thin, ring-shaped elastic metal components composed of multiple peaks and valleys. The product uses high-quality spring steel 65Mn (60Si2MnA/50CrVA /0Cr17Ni7Al /SUS304), heat-treated using specific methods. Depending on specific conditions, the hardness is generally controlled between HRC44 and 55. The surface is blackened, providing good elasticity. Wave springs are widely used in industries such as motors, textile machinery, hydraulic equipment, and automotive. They are mainly installed in bearing housings or bores suitable for their nominal dimensions. They require very little installation space and offer special functions such as noise reduction and vibration damping.

friedrich hartmann spring mechanical principles

Ring springs consist of outer rings with inner conical surfaces and inner rings with outer conical surfaces fitted together. The number of outer rings is determined by the magnitude of the load and deformation requirements. Ring springs are commonly used in applications where space is limited but strong buffering is required. A ring spring consists of many pairs of inner and outer rings. If damaged or worn, it is not necessary to replace all of them; only the discarded individual rings need to be replaced, making repair easier and more economical. Due to the significant friction on the contact surfaces when the outer and inner rings slide relative to each other along the mating cones, the axial force during loading is balanced by surface pressure and friction. This effectively reduces the effect of the axial load, thereby increasing the spring stiffness. During unloading, friction hinders the recovery of the spring's elastic deformation, thus effectively reducing the spring force. The characteristic curve of a ring spring in one loading and unloading cycle is OABO. Without the effect of friction, it would be OC. During unloading, the characteristic curve starts from point B, not from point E, due to the reduction caused by spring elastic hysteresis. Ring spring: A spring composed of alternating stacked washer-like spring steel discs with inner conical and outer cylindrical surfaces, and washer-like spring steel discs with inner cylindrical and outer conical surfaces. The number of pairs of inner and outer rings in a ring spring is determined by the magnitude of the load it bears and the deformation requirements.

friedrich hartmann spring structural classification

According to the nature of the force, springs can be divided into tension springs, compression springs, torsion springs, and bending springs. According to shape, they can be divided into disc springs, ring springs, leaf springs, helical springs, truncated cone volute springs, and torsion bar springs. According to the manufacturing process, they can be divided into cold-coiled springs and hot-coiled springs. Ordinary cylindrical springs are the most widely used due to their simple manufacturing, ability to be made into various forms according to loading conditions, and simple structure. Spring manufacturing materials should generally have high elastic limits, fatigue limits, impact toughness, and good heat treatment performance. Commonly used materials include carbon spring steel, alloy spring steel, stainless spring steel, as well as copper alloys, nickel alloys, and rubber. Spring manufacturing methods include cold coiling and hot coiling. Spring wire diameters less than 8 mm are generally cold-coiled, while those greater than 8 mm are hot-coiled. Some springs undergo strong pressing or shot peening after manufacturing to improve their load-bearing capacity.

friedrich hartmann spring features and applications

Features: Compared to ordinary compression or tension springs, their spring force is very constant, outputting a nearly linear force. This ensures that the product does not change due to variations in spring force during use. In narrow and long spaces, they can minimize space usage, enhancing possibilities for aesthetic product design. Constant force spring applications: Lift fans, LCD monitors, sliding windows and doors, supermarket automatic checkout counters, motor carbon brush pressure devices, cables, stapler springs, power tools, car ashtrays, locomotive carbon brush accessories, medical devices, mobile phone holders, etc.

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