Bearing forging and rolling technology introduction

Bearing forging and rolling technology introduction, 2018 - 12 - 15 ( Railway vehicle resource platform) Bearing ring forging is early air hammer, steam hammer or board hammer, etc on the general forging equipment. Mid 50 s began to use gas or heavy oil furnace heating billet, or flat ring rolling forging process by hammer forging process ( Two heating) 。 50 s, the establishment of a hammer press reaming machine assembly line, the hammer on the punching hole reaming process, now there are still many bearing factory as the main forging process. In the press forging blank bearing ring, except some small forgings can directly forging forming, the press and are normally pipe-expanding machines together, form flow operation or automatic production line, forging into a fire, and by the press forging preform blank, and then by the rolling forming broaching machine, blank ring. So can reduce the requirement of press forging, give full play to the efficiency and capacity of press, at the same time use of the advantages of the ring rolling process, and improve the geometrical precision of the blank ring and inner quality, improve production at the levels of blank ring. Germany tile granite ( Wagner） Company outer ring forging production line after the sixties, some countries generally used press reaming machine matching process, a heating forging outer ring, inner ring forgings, or the same type of inner and outer ring forgings, workpiece delivery shall be conducted by the conveyor belt, formed the advanced production craft, make the bearing ring forging technology and production capacity has greatly increased the step. For example, by the German tile granite ( Wagner） Company manufacturing for outer ring forgings production within the deep cone double cone forging production line and outer cone (for the inner ring forgings production Ladder) Shape forging production line, is made up of large hydraulic machine, rolling machine and double pillar unit into the whole diameter, the line is equipped with induction heating furnace. Germany Wagner company inner ring forging production line press forging ring technology is more, mainly has the following kinds: extrusion process, the extrusion ring rolling process, the set of forging process and tower, etc. Is squeeze rolling technology has been widely used in our country, the blank ring is especially suitable for medium and large above. The production process, the use of bearing ring online on many ways. The majority of small and medium sized ring, basic it is press unit into the production of wire and rolling. For railway bearing ring, outer ring commonly used air hammer and into the wire rolling unit, part of the increase the drive equipment. Inner ring with press and rolling unit into on-line. On the basis of an analysis of the process to ensure product quality, medium frequency induction heating furnace, press, rolling machine, the whole of diameter wire is one of the best mode of production. It can effective internal flow, the formation of forgings forging part defect of raw materials, to form stable internal organization.