In order for a valve spring to work smoothly at high temperatures, it is necessary for it to have good compressive strength, slack resistance, heat resistance and oxidation resistance, as well as certain anti-corrosion capabilities.

Because it is assumed that the temperature of the valve spring is very high, the elastic mold of the raw material for the valve spring will be accompanied by a drop, which will cause the load capacity of the valve spring to shrink and the tortuous stiffness to decrease. Therefore, it is necessary to understand its rate of change when it can work at high temperatures, and it is also necessary to measure the damage to the performance index of the valve spring due to the decreased bearing capacity. According to relevant requirements, when the general valve spring assumes that the temperature during operation is higher than 60 degrees, it is necessary to adjust its shear strain rate.

Use gate valve tool steel to make valve springs. The strength of the valve spring should be distinguished according to the size of the ground stress that the valve spring bears and its characteristics. However, if the strain force of the plan view is broken, it will show that it is because of the strength. Caused by.

Assuming that valve springs are used in instruments or electronic weighing scales, most manufacturers will use constant ductility aluminum alloys, because its thermal expansion coefficient changes very little, and this is to achieve its precision without being compromised. The transition to average temperature.

In the case of selecting raw materials, it is necessary to pay attention to the cutting performance of stainless steel plates, which has a greater correlation with the quality of valve springs.