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Method for forging crossed die forgings

A cross-shaped, die forging technology, used in the manufacture of tools, forging/pressing/hammer devices, forging/pressing/hammering machinery, etc. Line discontinuity, the effect of improving product quality

Inactive Publication Date: 2014-06-25
SHAANXI HONGYUAN AVIATION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to avoid the reduction of the mechanical properties and the shortening of the fatigue life of the cross-shaped forgings caused by the discontinuity of the streamline during the forging process of the cross-shaped forgings

Method used

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Examples

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Embodiment Construction

[0008] The method of the present invention will be described in detail below through specific examples.

[0009] A certain part of the aircraft engine nacelle designed by French aerospace company has adopted Ti-6Al-4V titanium alloy material, and the processing requirement of this part provides a cross-shaped forging; Adopt the forging method of the cross-shaped die forging of the present invention accordingly: First, an upper tire membrane and a lower membrane are prefabricated by 5CrNiMo die steel. The lower surface of the upper membrane is a plane, and a rod-like height and shape corresponding to the upper rod shape of the cross-shaped forging to be forged is set in the center of the plane. Deep groove; the upper surface of the lower membrane is a plane, and a deep groove corresponding to the height and shape of the lower rod of the cross-shaped forging required for forging is arranged in the center of the plane; the above-mentioned upper membrane and the lower membrane Pre...

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Abstract

The invention relates to the technical field of forging of crossed die forgings, in particular to a method for forging the crossed die forgings. The method includes prefabricating an upper forming die and a lower forming die which are provided with deep grooves; heating a rod or a plate of a raw material, and forging the head portion or the upper portion and the tail portion and the lower portion to be the upper portion and the lower portion of a crossed forging to be forged respectively; heating a forged forging blank, placing the lower portion and the upper portion of the forging blank into the deep grooves of the upper forming die and the lower forming die after being preheated for forming die forging, taking the forging blank out of the forming dies after forging by a certain degree, rotating for 90 degrees by taking a transverse I-shaped line of the crossed forging blank as an axis for horizontal forging, forging a left rod portion and a right rod portion of the crossed forging blank respectively, and acquiring a needed crossed forging through shaping forging. By the method, lowering of mechanical performance and shortening of fatigue life of manufactured crossed forgings due to a discontinuous streamline in the forging process of the crossed forgings are avoided, and quality of the crossed forgings is improved.

Description

technical field [0001] The invention relates to the technical field of forging cross-shaped forgings. Background technique [0002] Usually, the cross-shaped forging is forged into a square forging billet by heating the bar or plate, then cutting off the four corners of the square forging billet, and reheating the upper, lower, left, and The uncut parts on the four right sides start to be forged and drawn to the shape of the upper, lower, left and right four rods of the cross-shaped forging required for forging, and finally shaped and forged into the required cross shape Forgings; but the above method is due to the removal of the four corners of the square forging blank, so that the streamline of the forging is discontinuous, resulting in the reduction of the mechanical properties of the cross-shaped forging and shortening the fatigue life. Contents of the invention [0003] The technical problem to be solved by the present invention is to avoid the reduction of the mecha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/02B21J13/02
Inventor 郝宏斌冀胜利姚彦军李明武明郑建新
Owner SHAANXI HONGYUAN AVIATION FORGING
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