Hot ring rolling in bearing production

Abstract

The ring rolling process is widely used to produce seamless rings with outer diameters ranging approximately from 50 millimeters all the way up to 8 meters with cold or hot workpieces. Typical products are seamless rings for ball bearings, railroad wheels and a variety of other components. The ring rolling process has the advantages of short production time, material saving, close tolerance, etc. Especially ring rolling offer great possibilities in bearing industry where many types of rings with many different sizes are produced in large series. Since the geometry of most rings is complex the process design can be very difficult. In this paper the procedure of determining geometrical parameters of workpiece in case of radial hot ring rolling process together with forging process for annular blank producing is given. On the base of that procedure, adequate software was created too.