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Forging method of high-boss TC18 titanium alloy die forging

A TC18, high boss technology, applied in the field of forging hot processing, to reduce the difficulty of die forging, solve the problem of small deformation, and reduce the difficulty of control

Pending Publication Date: 2022-03-11
SHAANXI HONGYUAN AVIATION FORGING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to reduce the difficulty of forging billet making and die forging forming by designing reasonable pre-forging parts, solve the problem of local small deformation, and improve the uniformity of β forging structure

Method used

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  • Forging method of high-boss TC18 titanium alloy die forging
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  • Forging method of high-boss TC18 titanium alloy die forging

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Embodiment

[0043] Die forging of a certain type of machine pillar outer cylinder, the material is TC18, the outline size of the forging is 927×385×279, the weight on one side is 8-10mm, and the maximum projected area is 0.231m 2 . The pre-forging design method of this patent comprises the following steps:

[0044] Step 1: Design the final forging according to the part shape (see figure 1 ), the maximum projected area of ​​the final forging is 0.231m 2 It is the parting surface, which is convenient for the final forging forming;

[0045] Step 2: Design the simplified pre-forging according to the structure of the final forging (see figure 2 ), the parting surface of the pre-forging is chosen to be perpendicular to the parting surface of the final forging (see image 3 ), when die forging is formed, pre-forging and final forging are cross forging methods; grooves are dug on the upper and lower surfaces of the pre-forging (see Figure 5 ), where U-shaped groove L=80mm, h=20mm; satisfy ...

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Abstract

The invention belongs to the field of forging hot working, and relates to a forging method of a high-boss TC18 titanium alloy die forging. The method comprises the following steps: designing a final forging according to the shape of a part; taking the maximum projection plane of the final forging projected to the horizontal plane as the parting surface of the final forging; taking the maximum projection surface of the final forge piece which is overturned by 90 degrees and projected to the horizontal plane as a pre-forge piece parting surface; and pre-forging and finish-forging the blank with the boss according to the parting surface of the pre-forged piece and the parting surface of the finish-forged piece by adopting a cross-shaped cross die forging method.

Description

technical field [0001] The invention belongs to the field of forging thermal processing, and relates to a forging method of a high boss TC18 titanium alloy die forging. Background technique [0002] TC18 titanium alloy has high strength and high toughness, and is widely used in the aerospace field. High-boss TC18 titanium alloy die forgings for aircraft landing gear have complex shapes and large cross-section differences. The usual forging method: billet making + die forging; but the above method has the following problems: 1. When making billets, it is difficult to ensure the size of the high boss, and it is difficult for workers to operate; 2. During die forging, the forging at the high boss is not easy to fill, There are many times of die forging, and the production cycle is long; 3. More times of die forging lead to small deformation and uneven structure of the forging, and the uneven distribution of deformation of TC18 material during the β forging process has a great ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/02
CPCB21J5/02
Inventor 刘亚妮何健陈飞李阳秦卫东
Owner SHAANXI HONGYUAN AVIATION FORGING
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