Method for rapidly forming GH4720Li high-temperature alloy forge piece

A technology for superalloys and forgings is applied in the field of rapid prototyping of GH4720Li superalloy forgings, which can solve the problems of long preparation process and other problems.

Active Publication Date: 2021-06-04
中国第二重型机械集团德阳万航模锻有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the preparation process of GH4720Li superalloy forgings is long, the first technical problem solved by the present invention is to provide a method for rapid prototyping of GH4720Li superalloy forgings

Method used

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  • Method for rapidly forming GH4720Li high-temperature alloy forge piece
  • Method for rapidly forming GH4720Li high-temperature alloy forge piece
  • Method for rapidly forming GH4720Li high-temperature alloy forge piece

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Experimental program
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Embodiment

[0065] According to a GH4720LI disc character, select a single-sided 10mm forgings design margin, design simplicity figure 1 Indicated;

[0066] According to the weight and formation law of GH4720Li disc, the minimum deformation of the bar material in the mold cell during one die forging is selected from 50%, and the amount of the part body deformation is 60% and above. Where the deformation amount is calculated according to the DEFORM software simulated deformation amount x, then according to E x -1 calculates the deformation distribution figure 2 Indicated.

[0067] GH4720LI disc stick material uses composite package, such as image 3 , Figure 4 As shown, first, the base is wrapped in a normal temperature state, and the fiber cloth of 0.2 mm thick graphite is applied, and the thickness of the thickness of 0.3 mm, and then wraps a thickness of 5 mm, a thickness of 5 mm, and then wrapped in the outer surface of the fiber. Cotton, and finally in the outer surface with a 0.8 mm thick...

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Abstract

The invention relates to a method for rapidly forming a GH4720Li high-temperature alloy forge piece, and belongs to the technical field of material forming and control. The method for rapidly forming the GH4720Li high-temperature alloy forge piece comprises the following steps that a, preparation is performed, specifically, a unilateral allowance of 9-12mm is designed for the forge piece; the minimum deformation of a bar in a die cavity in the primary die forging process is 50% or above; the bar is sequentially coated with fiber cloth coated with graphite, aluminum silicate heat preservation cotton and a metal layer at the normal temperature; the bar is preheated through four-section temperature rising; a mold core is preheated to 500-650 DEG C, and a mold sleeve is preheated to 300-400 DEG C; after the mold is prepared, a lower mold cavity is sequentially covered with fiber cloth coated with graphite and aluminum silicate heat preservation cotton, the preheated bar is placed in the mold cavity, and the upper surface of the bar is covered with the fiber cloth coated with the graphite; and b, forging is performed, specifically, after a press makes contact with the bar, forging and forming are performed. According to the method, the forge piece is directly molded from the bar to die forging through one-fire molding, and the forging procedure is shortened by more than 50%.

Description

Technical field [0001] The present invention relates to the field of material formation and control technology, mainly related to the rapid formation of GH4720Li high temperature alloy forgings. Background technique [0002] GH4720LI high temperature alloy is a high-strength, corrosion-resistant and aging-strengthened nickel-based high-temperature alloy, the alloy has a very high degree of alloying, the main enhancement phase γ 'formation element Al and Ti content is as high as 7.5%, in service The volume fraction of γ 'phase is as high as 40%, and the first modified high-temperature alloy is the first, which is a typical refractory high temperature alloy. The window between the alloy forging and the window of the final forging temperature and the end of the final forging temperature are only 50 ° C, forging window Temperature stenosis, deformation resistance, poor plasticity, very easy to crack. High-temperature alloy forgings typically prepare for cake, processing positioning h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J1/06B21J1/00B21J5/02
CPCB21J1/06B21J1/00B21J5/025Y02P10/25
Inventor 米晨张鹏王周田唐超陈文杨伟
Owner 中国第二重型机械集团德阳万航模锻有限责任公司
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