A few problems often appear in your analysis of spring in the process of using Dongguan Fuda precision spring factory:
One, why does the spring show "lack of elasticity" in the use of the spring?
1, the design parameters of non-standard springs are unreasonable: they only pay attention to parameters such as outer diameter, inner diameter, length and so on. They often ignore the cross-sectional area and pitch of wire rods, resulting in insufficient elasticity.
2. The use of the specified temperature leads to a reduction in elasticity or even the loss of elasticity.
3. The spring quality grade is mistaken: unintentionally or intentionally using the common spring as a high quality spring or an imported spring, which leads to the lack of sensory elasticity.
4, the torsion spring manufacturer reminds you that the standard spring selection is not reasonable: because of the cheaper price, the lighter load type is chosen instead of the heavier load, which results in insufficient elasticity.
5, the spring wire itself is soft, or the spring quenching temperature is low or the holding time is not long enough, or after the spring forming, the tempering temperature is too high and the time is long, resulting in the tensile strength and the strength is not enough. This is the real sense of elasticity is not enough.
Two, why does the spring break in the process of use?
1, compression spring break will prompt you to manufacturers because the core shaft is too small or the use of spring and spring horizontally, core shaft wear and fracture;
2. The use of foreign objects between the spring ring and the ring makes the actual number of effective rings reduce, thus producing high stress to break it.
3, the stress concentration fracture is caused by the uneven material of the spring, or the excess of the content of the impurity.
4, the special spring manufacturers advise you to use springs in series to make them bend, and exceed the length of the mandrel or countersink hole, or because of the tiny difference of the spring itself, the weaker load will break the larger compression volume.
5. When the core shaft is too small, the assembly surface is not flat, and the parallel degree of the positioning surface at both ends is bad, the spring is compressed and twisted, and the local high pressure is broken.
6, the core axis is too short and the end is not chamfered, which will lead to the friction and wear of the spring and the core shaft.
7, more than the maximum compression is used to produce high effective stress to break the spring.
8, the spring burning, corrosion, high hardness and overpressure will all reduce the tensile strength and produce fracture.