Multi strand guide wire manufacturer: material requirements for producing oblique coil springs!

1. High strength

In order to improve the fatigue failure and anti relaxation function of the swashplate spring, the material of the swashplate spring should have high yield strength and elastic limit, especially high yield strength ratio. Generally speaking, the elastic limit of this material is directly proportional to the yield strength, so the design and manufacturing of helical coil springs always expect this material to have a high yield strength.

2. Good plasticity and patience

In the manufacturing process of swashplate springs, the material needs to undergo varying degrees of processing deformation, so the material needs to have a certain degree of plasticity. For example, when the zigzag radius is small, the swashplate spring material should not exhibit defects such as cracks or folds when winding or stamping the zigzag shape. At the same time, when the oblique plate spring is subjected to impact load or variable load, the material should have good tolerance, which has great benefits for improving the service life of the oblique plate spring.

3. Excellent appearance and fatigue performance

When the helical coil spring is working, the surface stress is relatively high, and fatigue failure often starts from the surface of the steel wire. The use of oblique ring springs, valve oblique ring springs, suspension oblique ring springs, and other oblique ring springs in important occasions has a cycle life of several hundred thousand or more cycles, which puts high requirements on the fatigue performance of materials. There are many factors that affect the fatigue performance of materials, such as chemical composition, hardness, purity of steel, appearance quality, and metallographic structure, especially the appearance quality of materials.

4. Strict size

Many coil spring loads require high accuracy, such as the coil spring load error of the coil valve should not exceed 5% of the specified load of 6% or less, and the tension and compression of the coil spring wire rope. For example, when the wire diameter error is 1%, the load error is about 4%. Therefore, strict dimensional accuracy is also very important to ensure the quality of the coil spring.

5. Good consistency

The requirement for uniformity of materials refers to the uniformity and stability of indicators such as chemical composition, mechanical function, and dimensional error. If the performance of materials does not match, it will cause many difficulties in the production of spiral springs, resulting in the geometric size, hardness, load and other parameters of the product, such as severe dispersion, non-uniformity, and even the formation of waste.