Double-roller rotary forging forming method for constructing large-diameter thin-wall composite metal disc

Abstract

The invention relates to a double-roller rotary forging forming method for constructing a large-diameter thin-wall composite metal disc. The double-roller rotary forging forming method comprises the following steps that S1, at least two composite disc pieces are accurately stacked and then subjected to electron beam seal welding in a vacuum chamber; s2, semi-finished product positioning, wherein the semi-finished product obtained after seal welding is placed in a heating furnace to be heated to a forging temperature interval, heat preservation is conducted for a period of time, and then the semi-finished product is transferred to the center of a lower die of forming equipment; s3, the semi-finished product is formed under rotary rolling of a double-cone roller, specifically, the double-cone roller revolves around the central axis of a main shaft, a lower die drives the blank to do upward feeding motion, when the workpiece makes contact with the double-cone roller, the double-cone roller starts to rotate under the action of the friction force of the blank, and axial rolling of the semi-finished product is achieved; s4, finished product preparation is completed. And S5, healing of the interface of the composite disc piece, wherein the formed disc piece is heated in a heating furnace, and heat preservation is conducted. According to the method, the large-diameter thin-wall composite metal disc piece can be formed, the surface quality of the formed composite disc is good, and the interface connection is complete.

Description

technical field [0001] The invention relates to the field of manufacture of composite metal discs, and more particularly, to a double-roller oscillating forming method for constructing large-diameter and thin-walled composite metal discs. Background technique [0002] With the improvement of national defense technology and industrial level, the application of large-diameter thin-walled metal composite discs is more and more extensive in aerospace, nuclear field, petroleum liquefaction, atomic energy and other fields. When it is produced by forging, since the height-diameter ratio of the workpiece is small, a great friction force will be generated on the contact surface between the workpiece and the die. On the one hand, the deformation force of the area required for the deformation of the workpiece rises sharply, and may even exceed the strength limit of the die material; Not easy to produce plastic deformation. Therefore, it is difficult to realize large-diameter thin-wal...

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to achieve large-diameter thin-walled composite discs by ordinary integral forging

When producing composite large-diameter thin-walled disc parts by rolling composite method, the rolling can only be rolled along a specific method, and the rolled plate needs to be cut before it can be made into a disc part. This forming method seriously damages the flow direction of metal fibers , and due to the limited reduction rate of each pass in rolling forming, the composite layers are not dense enough, which will also affect the degree of compactness between the tissues of the final formed product

[0003] At present, there is no good forming method for large-diameter thin-walled composite metal discs, especially the structure bonding density at the interface

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