A near-net-shape method for thin-plate titanium alloy forgings with warping

A near-net shape, titanium alloy technology, applied in the field of forging and forming of structural parts, can solve problems affecting the mechanical properties of materials, achieve the effect of improving surface quality and reducing defects

Active Publication Date: 2021-01-26
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The alloy will undergo eutectoid reaction during hot working and heat treatment. If the process is not properly controlled, the precipitated Ti 2 Cu particles can affect the mechanical properties of materials

Method used

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  • A near-net-shape method for thin-plate titanium alloy forgings with warping
  • A near-net-shape method for thin-plate titanium alloy forgings with warping
  • A near-net-shape method for thin-plate titanium alloy forgings with warping

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Embodiment Construction

[0039] Below in conjunction with accompanying drawing, the present invention will be described in further detail; figure 1 The flow chart of the present invention, the specific process of forging with warped thin plate titanium alloy precision forging is:

[0040] 1. Cut the blank and process it

[0041] According to the calculated blank size, the lathe is used to cut the blank, and according to the size requirements of the target final forging, one end of the blank is turned and inverted to form the original blank 1, and the original blank 1 includes a cylinder 1-1 and an inverted cone 1- 2, such as figure 2 As shown, the diameter of cylinder 1-1 is D 1 , the diameter of the inverted frustum 1-2 is d 1 , machining surface roughness Ra=1.6μm; cylinder 1-1 and inverted truncated cone 1-2 are two parts of original blank 1, and are integrally connected. One end of the body 1-1 is connected, and the small end face of the inverted cone 1-2 is the outer end face; the edge of th...

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Abstract

The invention discloses a near-net-shaping method for a warped thin-plate titanium alloy forging. In the method, the original blank is first formed into a target structural part through two stages of pre-forging and final forging, so that the deformation of the structural part at each stage Smaller, improve the deformation control accuracy of each stage, and reduce defects such as strain or tear in the forging process; in each forging process, use different forging processes for different forming parts to improve forging forming accuracy and reduce forging defects Folding defects, strains or tears caused by the mismatch between the method and the size of the formed parts, and the final forgings have good streamlines; in practical applications, it is found that forgings forged by this method, the primary fluorescence of the forgings The qualified rate has been increased from 20% to 100%, and the qualified rate of forgings has been increased from 60% to over 98%; the forming rate has been greatly improved and the waste of materials has been reduced.

Description

【Technical field】 [0001] The invention belongs to the technical field of forging and forming of structural parts, and relates to a near-net forming method of a warped thin-plate titanium alloy forging. 【Background technique】 [0002] Alloy near-net-shape forgings with warped sheets have less machining allowance, and have higher requirements for forging size, shape and surface quality. Improper forging methods lead to a large number of folding defects at the warped R of the forging sheet; during edge trimming, defects such as strain and tear occur at the warped sheet, resulting in a large number of scrapped forgings. [0003] For alloys that undergo eutectoid reactions during thermal processing and heat treatment, if the process is not properly controlled during heat treatment, the precipitated two-phase particles will affect the mechanical properties of the material; for example, Ti-230 is an intermetallic compound containing Ti 2 Cu near α-type binary titanium alloy, Cu co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/00B21J3/00B21J1/06
CPCB21J1/06B21J3/00B21J5/002
Inventor 吕小茹吴恺杨辉赵文革乔红武姚文广高文涛赵雪茹
Owner AECC AVIATION POWER CO LTD
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