Difference between spring washer and flat washer

The flat pad is only to increase the contact area, and the spring pad can be loosened. For example, the bolt connecting the motor and the base is generally spring-loaded. Because the motor vibrates without the spring pad, the nut will loosen and the equipment with vibration will be fastened. Spring washers are installed on the parts. Generally, there is no need to add gaskets on the flanges. There is a relationship between the springs and the springs on the flanges. If the pulse is easy to generate, it is better to add spring washers and high speed. Fluids and calibers change frequently. Don't generalize. On some valves, the stuffing box gland flanges need to be spring-loaded. Spring washers are easy to automate and have been selected.

The flat pad is to increase the fastening contact area. The spring pad is used for the place with vibration to prevent loosening. The PVC flange is not required to be spring-loaded. The flat pad is to increase the contact area and prevent the friction between the bolt and the workpiece; the spring pad is to prevent the vibration from loosening.

The main function of the flat washer is to protect the surface of the joint from scratching the surface of the workpiece when the bolt and nut are tightened; the spring washer is loose. However, some important connections, such as the place where the friction is mainly transmitted by the friction, can not use the spring pad, and it is easy to reduce the rigidity of the connection. Spring washers are not required. When the strength of the connected parts is low, flat pads or flange bolts are used to increase the contact area. The flat pads mainly increase the contact area. The spring washers are loose-proof, and there are vibrations, pulses, and medium temperatures. Always use a spring washer when fluctuating. The spring pad can increase the pre-tightening force and has a anti-loose effect, while the flat washer does not.