Finish rolling forming technique of numerical control ring rolling machine of internal long neck special-shaped wind power flange

Abstract

The invention disclosed a finish rolling forming technique of a numerical control ring rolling machine of an internal long neck special-shaped wind power flange, belonging to the field of wind driven generator apparatuses. The technique comprises the following steps of: selecting a continuously cast bloom to feed materials on a sawing machine; heating a matched furnace according to an actual capacity of a heating furnace; then, blanking on an oil press to obtain blank; returning the furnace for heating and thermally preservation; discharging the furnace, carrying out finish-rolling on the numerical control ring rolling machine so as to form a combined forging blank; cooling the combined forge blank by air; after the cooling is finished, sawing from the middle of the side surface of the combined forging blank, to obtain two internal long neck flange ring member blanks; thermally treating the internal long neck flange ring member blank; carrying out rough-turning and finish-turning on the ring member blank after thermal treatment on a vertical numerical control machine; detecting flaw of the ring member after finish turning by ultrasonic waves; next, detecting mechanical performance indexes, granularity and non-metallic inclusion; and realizing identification package of a product. The technique in the invention increases utilization rate and production efficiency of flange forging material as well as performance of a forge piece.

Description

technical field [0001] The invention relates to a precision rolling forming process of a numerically controlled ring rolling machine for an inner high-neck special-shaped wind power flange, belonging to the field of wind power generator equipment. Background technique [0002] The currently used wind power flanges generally use steel billets as raw materials, and after blanking, forging billets, ring rolling, heat treatment, machining and other processes, they are made into ring forgings that meet the requirements. As shown in the figure above, the traditional manufacturing method of inner high-neck flange forgings generally makes the blank into a rectangular cross-section, and then processes the high-neck part according to the shape shown in the part drawing. Moreover, this method is often single-piece rolling in production. The manufacturing process is not smooth, the production efficiency is low, and the consumption of raw materials is large. The key is to reduce the perf...

AI Technical Summary

Problems solved by technology

As shown in the figure above, the traditional manufacturing method of inner high-neck flange forgings generally makes the blank into a rectangular cross-section, and then processes the high-neck part according to the shape shown in the part drawing. Moreover, this method is often single-piece rolling in production. The manufacturing process is not stable, the production efficiency is low, and the consumption of raw materials is large. The key is to reduce the performance of forgings.

Images