The silver contact includes a connecting body and a contact body integrally arranged in a columnar shape. The radius of the contact body of the product is larger than the radius of the connecting body, and the center of the other end face of the connecting body protrudes outward to form a convex surface. The convex surface of the product There is a silver coating on the surface. The edge of the convex surface of the product is provided with an annular convex edge along the convex surface. The axial height of the convex surface of the product is greater than the axial height of the annular convex edge. The product has stable contact and can avoid poor contact or The characteristics of the open circuit.
How to distinguish whether the material of silver contacts is copper or silver
Due to the unique needs of some switch electrical products, there are too many factories making silver contacts on the market, and it is difficult to guarantee that some unscrupulous businessmen use cheap copper contacts instead of silver contacts in order to obtain more benefits. People simply don't know the difference between silver contacts and copper contacts.
In fact, copper and brass can be identified by the naked eye. In addition, copper is softer, while brass has a harder texture. Silver alloy and silver are also the same. Alloy silver is much harder and pure silver is softer, but the color is not particularly distinguishable. In addition, silver contacts are generally used for circuit contacts that are subject to ignition. The inside is copper, and the outside is plated with a thin layer of silver. The reason for this is that the silver is ignited through the contacts, which will generate an oxide layer like other metals. Silver oxide has better electrical conductivity than pure silver. Therefore, in the case of general contacts that cannot avoid ignition, silver contacts or silver alloy contacts are used.
Silver contacts broadly refer to the intersection of the separation and contact of electronic appliances when they are disconnected and closed. Because metal conductor terminals are prone to instantaneous heat and sparks at the moment of contact, the multi-frequency process in which the contact points are used In this case, oxidation and electrolysis are easy to occur, so the contact point is enlarged and thickened, or made of polymer metal (copper and silver are mostly used), so this contact point made of polymer metal .