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A kind of die forging method of titanium alloy forging

A technology for titanium alloys and forgings is applied in the field of forging to achieve the effects of solving complex calculation problems, reducing material consumption, and avoiding the reduction of mechanical properties and stress corrosion resistance.

Active Publication Date: 2014-10-22
SHAANXI HONGYUAN AVIATION FORGING
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to propose a die forging method for large titanium alloy forgings, which can avoid the problems caused by open die forging, and at the same time solve the problem of the limitation of closed die forging

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  • A kind of die forging method of titanium alloy forging

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] Step 1: Design closed die forgings and select forging equipment according to the parts. Analyze the part drawing to determine the material grade selected for the part, the outline size of the product part, the projected area, the minimum and maximum thickness, the height of the rib, and the width of the rib. Select forging equipment according to part material, structural characteristics, outline size and projected area, and determine forging allowance.

[0014] Step 2: Design and make a mold according to the forging. Analyze the forging diagram, determine the thermal shrinkage rate of the forging according to the forging temperature of the titanium alloy and the preheating temperature of the mold, and design and manufacture the digital model of the hot forging. see figure 1 , In terms of mold design, the mold burr adopts an unconventional vertical burr, the b...

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Abstract

The invention belongs to the technical field of forging and relates to a die forging method for titanium alloy forge pieces, which mainly includes: the step 1, designing a closed-die forge piece and selecting forging equipment according to parts; the step 2, designing and making a mold according to the forge piece; and the step 3, processing the forge piece by the hammer closed-die-forging process. In terms of design of the mold, flash of the mold is unconventionally designed to be vertical, the flash bridge expands by a certain size along the direction perpendicular to a parting surface, and the flash cavity is parallel to the parting surface to expand by a certain size outwards.

Description

technical field [0001] The invention belongs to the technical field of forging, and relates to a die forging method of a titanium alloy forging. Background technique [0002] With the development of large-scale and integrated domestic aircraft, there are more and more large-scale integral forgings. In the past, similar large-scale forgings were generally made by open die forging, which resulted in large material consumption and high cost (usually open die forging Burrs account for 10% to 50% of the mass of forgings); in addition, when large-scale forgings are forged with open dies, the raw materials are full of difficulties under the action of two-way pressure; Cut off, the mechanical properties and stress corrosion resistance of forgings will be reduced. In order to solve the above problems, we usually use the method of closed die forging (conventional burr-free die forging), but this kind of die forging also has certain limitations: first, the volume calculation of the bl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/02
Inventor 郭敏唐军黄之益冀胜利王华
Owner SHAANXI HONGYUAN AVIATION FORGING