Washers are divided into: flat washers-Class C, large washers-A and C, large washers-C-class, small washers-A-level, flat washers-A-level, flat washers-chamfer type-A, steel for high-strength washers, spherical washers, cone washers, I-beam square washers, grooved steel square washers, standard spring washers, light spring washers, heavy spring washers, internal teeth lock washers, serrated locking washers, external teeth lock washers, serrated locking washers, single ear stop washers, double ears stop washers, external tongue stop washers, Stop washers for round nuts.
Flat washers generally used in the connector is a soft texture, a hard texture is more brittle, its main role is to increase the contact area, dispersing pressure, to prevent the soft texture of the bad. And spring Washer Spring's basic role is to tighten the nut after the nut to a force, increase the friction between the nuts and bolts! The material is 65Mn (spring steel), the heat treatment hardness is HRC44~51HRC, the surface oxidation treatment.
Chinese (Spring) washer, the card spring is an elastic cushion or a loose washer that prevents loosening of bolts. The working principle of the anti-loose washer is very simple. It consists of two pieces of washers. The outer side is a radial convex surface, and the medial is a helical tooth face. When assembling, in contrast to the medial oblique tooth surface, the lateral radial convex surfaces and the contact surfaces of the two sides are in a occlusal state, and when the connecting parts are vibrated and the bolts are loosened, only two pieces of the inner helical surface of the washer are allowed to be relatively dislocated, resulting in a lifting tension, thus reaching 100% locking.
The spring washer is widely used in the bearing force and the load-bearing structure of the general mechanical products, which is characterized by low cost, convenient installation and suitable for the parts with frequent loading and disassembling. Quick-and-easy washers are included in the automatic selection, but the spring washer's ability to prevent the loose is very low! Especially in Europe and the United States require high reliability of the product adoption rate is very low, especially the important bearing structure of the joint site has been abandoned. Our country also has some application in the military aspect, but has improved to the stainless steel material. Steel Spring Washers in CASC early is banned! Also said is very unsafe, because two 1 is "ring" 2 is hydrogen embrittlement.
Spring washers in the screw industry, often called the elastic pad. Its material has stainless steel and carbon steel, carbon steel is iron. The commonly used spring washer sizes are M3, M4, M5, M6, M8, M10. M12, M14, M16. These specifications are more commonly used. Spring washers GB/T 94.1-87, standard specification for 2-48mm Standard Spring Washers