Brief Description and Classification of Washers

Brief Description and Classification of Washers

Definition of gasket:

Washers refer to the parts that are cushioned between the connected part and the nut. Generally, it is a flat metal ring used to protect the surface of the connected part from being scratched by the nut, and to disperse the pressure of the nut on the connected part. Washers are divided into spherical washers, conical washers, square bevel washers for I-beams, etc.

Classification of gaskets:

Washers are divided into: flat washer - C grade, large washer - A and C grade, extra large washer - C grade, small washer - A grade, flat washer - A grade, flat washer - chamfer type - A grade, high-strength washer for steel structure, spherical washer, conical washer, square bevel washer for I-beam, square bevel washer for channel steel, standard spring washer, light spring washer, heavy spring washer, inner tooth lock washer, inner tooth lock washer, outer tooth lock washer External serrated lock washer, single ear stop washer, double ear stop washer, external tongue stop washer, and stop washer for round nuts.

Flat washers are generally used in connectors where one is soft and the other is hard and brittle. Their main function is to increase the contact area, disperse pressure, and prevent the soft material from being crushed. The basic function of the spring washer is to apply force to the nut after tightening it, increasing the friction force between the nut and the bolt! The material is 65Mn (spring steel), with a heat treatment hardness of HRC44-51HRC, and has undergone surface oxidation treatment.

Huasi (spring) washer, a clamp spring is an elastic cushion or clamp lock washer that prevents bolts from loosening. The working principle of the lock washer is very simple. It consists of two washers. The outer side has a radial convex surface, while the inner side has a diagonal tooth surface. When assembling, the inner inclined tooth surfaces are opposite each other, and the outer radial convex surface is in an interlocking state with the contact surfaces at both ends. When the connecting piece is subjected to vibration and causes the bolt to loosen, only the relative displacement between the inner inclined tooth surfaces of the two washers is allowed, generating lifting tension, and achieving 100% locking.