Spring washers are widely used in load-bearing and non-load-bearing structures of general mechanical products. They are characterized by low cost, convenient installation, and are suitable for parts with frequent assembly and disassembly.
The automatic selection of washers is included, but the anti-loose ability of spring washers is very low!
Especially in European and American countries that require high reliability products, the adoption rate is extremely low,especially the important load-bearing structural connection parts have long been abandoned.
Our country still has some applications in military industry, but it has been improved to stainless steel. Steel spring washers have long been banned in CASC! It is also said to be very unsafe.
There are two reasons: 1 is “bulging ring” and 2 is hydrogen embrittlement.
Spring washers are often called spring washers in the screw industry.
Its materials are stainless steel and carbon steel, and carbon steel is also iron. Commonly used spring washers are M3, M4, M5, M6, M8, M10, M12, M14, M16.
These specifications are more commonly used. The spring washer national standard GB/T 94.1-87, the standard specifies a standard spring washer with a specification of 2-48mm.
Washer Use
The spring washer is installed under the nut to prevent the nut from loosening.
It is stated in the national standard.
Hexagonal slotted nuts are designed for use with bolts with holes at the end of the screw, so that the split pin can be inserted from the slot of the nut into the hole of the screw to prevent the nut from loosening automatically.
It is mainly used in occasions with vibration load or alternating load.
The methods to prevent the automatic loosening of nuts (or bolts) in mechanical design and production include:
Padded spring washer; (simple and easy to make)
Use hexagonal slotted nut + split pin; (increased processing procedures compared to the same period)
Padded stop washer; (increased processing procedures compared with the same period last year)
Insert the steel wire into the hexagon head of the hexagon bolt. (Processing procedures increased year-on-year)
Spring washers are used to prevent loosening. For example, the bolts connecting the motor and the frame should generally be equipped with spring washers, because if the motor vibrates without spring washers, the nuts will loosen.
Generally, the fasteners on the vibration equipment are equipped with spring washers. Generally, no gasket is needed on the orchid!
The addition of spring gaskets on the flange is related to the medium flowing in the pipeline. If it is easy to produce pulses, it is best to add spring gaskets, as well as high-speed fluids, and the diameter changes frequently.
Do not generalize. On some valves, the stuffing box gland All flanges need to add spring gaskets. Spring gaskets are included in the automatic selection of quick, easy and excellent.
The bolts connecting the motor and the frame generally need spring washers, because if the motor vibrates without spring washers, the nuts will loosen.
Generally, the fasteners on the vibration equipment are equipped with spring washers,and the flanges generally do not need to be added!
The addition of spring gaskets on the flange is related to the medium flowing in the pipeline. If it is easy to produce pulses, it is best to add spring gaskets, as well as high-speed fluids, and the diameter changes frequently.
Do not generalize. On some valves, the stuffing box gland All flanges need to add spring gaskets. Spring gaskets are included in the automatic selection of quick, easy and excellent.
