Method for forging an l-shaped long thin plate forging

By using flattening, roll forging, and die forging methods, the problems of difficult billet preparation and uncontrollable flow lines of L-shaped long thin plate forgings have been solved, achieving the effects of short process flow, stable deformation, low material consumption, and high production efficiency.

CN115592058BActive Publication Date: 2026-01-30HEAVY MASCH AEROSPACE MATERIALS ENG (GUIZHOU) CO LTD +1
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Patent Information

Application Number
CN202211222366.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-10-08
Publication Date
2026-01-30
Estimated Expiration
2042-10-08

AI Technical Summary

Technical Problem

L-shaped long strip thin plate forgings have many problems in billet preparation, such as difficulty in controlling the flow line, easy generation of cracks and bright lines. Existing processes are characterized by long flow, high equipment tonnage, high noise, and low production efficiency.

Method used

The method of flattening, roll forging and die forging involves circumferentially flipping and flattening the bar into a rectangular strip, then roll forging to prepare a T-shaped thin plate blank, and finally die forging. Combined with local forging and annealing, the generation of bright line defects is avoided.

Benefits of technology

This process achieves a short process flow, stable deformation process, similar deformation amount in each part, ideal streamline, low material consumption, avoidance of bright line phenomenon, and improved production efficiency and forming accuracy.

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Abstract

This invention relates to the field of forging technology, and in particular to a forging method for an L-shaped long strip thin plate forging. The forging method for an L-shaped long strip thin plate forging includes the following steps: (a) flattening the circumferential surface of a bar stock, rotating it 90° circumferentially and flattening it again to obtain a strip-shaped billet with a rectangular cross-section along the thickness direction; (b) rolling the strip-shaped billet to obtain a T-shaped thin plate billet; (c) die-forging the T-shaped thin plate billet to obtain an L-shaped long strip thin plate forging. The forging method of this invention can solve the problems of difficult billet preparation and uncontrollable flow lines in L-shaped long strip thin plate forgings, and avoids defects such as bright lines in L-shaped long strip thin plate forgings.
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Citation Information

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