WATER LUBRICATED COMPOSITE THRUST BEARING OF NUCLEAR MAIN PUMP

摘要

A water lubricated composite thrust bearing of a nuclear main pump comprises a stainless steel tile base (1) and an engineering plastic layer (2). The stainless steel tile base is provided with a concave-convex surface (3) connected to the engineering plastic layer. The concave-convex surface (3) and the engineering plastic layer (2) are compositely molded by means of thermoplastic die pressing. A ratio of the area of the concave-convex surface (3) to the area of an orthographic projection of the concave-convex surface (3) on the stainless steel tile base (1) ranges from 1.2 to 2. By means of the concave-convex surface (3) and a specific bonding property obtained after fusion of a rough face (4) and the engineering plastic layer (2), the concave-convex surface (3) is bonded with the engineering plastic layer (2), thereby forming a reliable composite thrust bearing that is physically connected into a whole. Respective advantages of metal and nonmetal can be brought into play, which is conductive to establishment of a stable safe lubrication water film. The water lubricated composite thrust bearing is a safe and reliable water lubricated composite thrust bearing with resistance to nuclear radiation.