For ten years, Lispring has been focusing on the R&D and production of wave springs and spiral retaining rings in the past, present and future, aiming to provide reliable and satisfactory products to global high-tech customers. We welcome your inquiries at any time.
Function of spring:
The buffer function is to install springs between the frame and the wheels to slow down the bumps of the vehicle using the elasticity of the springs. Therefore, the springs on each motor vehicle are also quite useful.
The reset function spring deforms under the action of external forces, and after removing the external forces, the spring can return to its normal state. Many devices and tools use this property to reset. For example, many buildings have reset springs on the hinges of their doors, which automatically open and close when people enter and leave. People have also used this function to make automatic pencils, automatic umbrellas, and other items, which are very convenient.
Vibration sound function
When air flows through the reed holes in harmonicas and accordions, it impacts the reeds, which vibrate to produce beautiful sounds.
Measurement function
How is a spring scale made? It is made by using the property that the extension (or contraction) of a spring is proportional to the external force within the elastic limit.
The manufacturing materials of wave springs generally have high elastic limit, fatigue limit, impact toughness and good heat treatment performance. Commonly used materials include carbon spring steel, alloy spring steel, stainless spring steel, copper alloy, nickel alloy and rubber.
The manufacturing methods of springs include cold rolling and hot rolling. Cold rolling is generally used for springs with a wire diameter less than 8 mm, while hot rolling is used for springs with a wire diameter greater than 8 mm. Some springs require strengthening or shot blasting after manufacturing to improve their load-bearing capacity. The development of spring application technology has placed higher demands on materials.
Springs deform under external forces, and can return to their original state when the external forces are removed. Many tools and equipment use this property of springs to reset. For example, many building doors are equipped with reset springs on the hinges, which automatically reset the door after people enter and exit.
People also use this function to make automatic umbrellas, automatic pencils and other convenient supplies. In addition, various buttons and keys also need reset springs. Elastic deformation is easy to reset, while plastic deformation cannot be reset.
The reset function of the spring is the essential reason why the spring can have elastic potential energy. After the spring is stressed, it undergoes elastic deformation. Due to the reset function of the spring, it has elastic potential energy. However, if the stress is too large and exceeds the maximum elastic limit, the reset function of the spring will not exist, and there will be no elastic potential energy.
According to the nature of the force, springs can be divided into wave springs, precision springs, tension springs, compression springs, torsion springs, bending springs, and spiral springs. Springs deform under external forces, and can return to their original state when the external forces are removed. Many tools and equipment use this property of precision springs to reset.
For example, many hinges on the doors of buildings are equipped with reset springs, which automatically reset the door after people enter and exit. People have also used this feature to create automatic umbrellas, pencils, and other items, which are very convenient. In addition, various buttons and keys also require reset springs.
Springs are widely used basic parts, which are very important for power machinery, instruments and meters. Their function is to convert mechanical or kinetic energy into deformation energy, or to convert deformation energy into kinetic energy or mechanical work, in order to achieve the purpose of buffering and shock absorption. Due to the wide application of springs, the production volume is greatly increased, which inevitably leads to problems during processing. There are many reasons for defects in the heat treatment of springs. Different heat treatment methods for springs will produce different defects. Here we will discuss in detail the causes and protective measures for these defects.
A: The spring produced can meet the customer's requirements for product quality.
The selected materials can meet the process requirements of product processing.
Materials that can be purchased.
B: The selected material has machinability and economic efficiency for processing into spring products, with high cost performance characteristics.
Consideration should be given to the ease of disposal of scrap materials and the possibility of resource recycling.
C: Select materials that have no public harm in the scrapping, processing, and finished product stages, and that comply with government laws and regulations.
The material meets the special characteristics of the product, such as: specifications and dimensions, process performance, mechanical strength, heat treatment performance, environmental corrosion or impact, electromagnetic characteristics, operating ambient temperature, and so on.
The working temperature of the spring increases, and the elastic modulus of the spring material in Dongguan decreases, resulting in a decrease in stiffness and a decrease in load-bearing capacity. Therefore, springs working at high temperatures must understand the rate of change (value) of elastic modulus and calculate the impact of the decrease in load-bearing capacity on the performance of the spring. According to GB1239, when the working temperature of a common spiral spring exceeds 60°C, the shear modulus should be corrected, with the formula: Gt=KtG
Wherein, G is the elastic modulus at room temperature; Gt is the shear modulus at operating temperature t; Kt is the temperature correction factor selected according to Table 2-98.
Carbon spring steel wire and piano wire have large residual stresses after cold drawing. After processing the spring, there is a large residual stress, and the dimensional change after tempering is large, making it difficult to control the dimensional accuracy. Oil quenched and tempered steel wire is a process of strengthening the steel wire after drawing it to a specified size, with essentially no residual stress. After forming the spring, it undergoes low-temperature tempering, resulting in minimal dimensional change and better heat resistance stability than cold-drawn strengthened steel wire.
The material section of the coil spring should preferably be a circular section. Square and rectangular section materials have strong bearing capacity and good impact resistance, and can also make the spring smaller, but the material source is limited. Moreover, the price is high, so unless there is a special need, this material is generally not preferred. In recent years, the development of using round steel wire flattened instead of trapezoidal steel wire has achieved good results.
