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Forging method of alloy cast ingots

A technology of alloy ingots and ingots, which is applied in the field of material processing and forging, and can solve the problems that alloy ingots are not easy to open and forge

Active Publication Date: 2020-06-16
BEIJING CISRI GAONA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for forging alloy ingots to solve the problem that alloy ingots with large aspect ratios are not easy to forge

Method used

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  • Forging method of alloy cast ingots
  • Forging method of alloy cast ingots
  • Forging method of alloy cast ingots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Φ265×1160mm directionally solidified GH4096 alloy ingot upsetting forging billet

[0056] Three times of upsetting are used to open the billet, three sets of molds and three sets of punches are preheated in the range of 350-500°C respectively, and the preheating time before forging is more than 3h; the inner diameter of the large end and the small end of the first mold 1 are respectively 330mm and 320mm, height 850mm, the diameter of the first punch 4 is 310mm; the inner diameter of the large end and the small end of the second mold 2 are 390mm and 380mm respectively, the height is 550mm, the diameter of the second punch 5 is 370mm; the third mold 3 The inner diameter of the big end and the inner diameter of the small end are 520mm and 510mm respectively, the height is 300mm, and the diameter of the third punch 6 is 500mm. Use the big end of the mold to face up every time, and evenly smear graphite milk on the inner wall for lubrication; the alloy ingot 7 is soft-cove...

Embodiment 2

[0058] Φ175×750mm Directional Solidification GH4096 Alloy Ingot Opening by Upsetting and Forging

[0059] Three times of upsetting are used to open the billet, three sets of molds and three sets of punches are preheated in the range of 350-500°C respectively, and the preheating time before forging is more than 3h; the inner diameter of the large end and the small end of the first mold 1 are respectively 220mm and 210mm, height 600mm, diameter of the first punch 4 is 200mm; inner diameter of the big end and small end of the second mold 2 are 270mm and 260mm respectively, height 400mm, diameter of the second punch 5 is 250mm; third mold 3 The inner diameter of the big end and the inner diameter of the small end are respectively 320mm and 310mm, the height is 250mm, and the diameter of the third punch 6 is 300mm. Use the large end of the mold to face up every time, and evenly smear graphite milk on the inner wall for lubrication; the alloy ingot 7 is soft-covered before forging...

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Abstract

The invention relates to the field of material machining forging, and discloses a forging method of alloy cast ingots. The alloy cast ingots are each in a cylinder shape. The forging method comprisesthe steps that first, n tubular dies with different inner diameters and n punches in one-to-one correspondence are prepared, wherein n is larger than or equal to 3; and second, according to the sequence, from small to large, of the inner diameters of the dies, the alloy cast ingots are sequentially placed into the dies to be punched and upset through the corresponding punches. Through the technical scheme, cogging of the alloy cast ingots with the height-diameter ratio up to 5 can be achieved and can be completed on a conventional hydraulic quick forging machine, through use of the dies, instability of the blanks in the upsetting and cogging processes can be effectively prevented, and a bulging phenomenon is avoided; and symmetry of the formed blanks is good, as-cast structures of the blanks are advantageously and evenly broken under three-way constraints of the dies and the punches, and thus deformation dead zones are reduced.

Description

technical field [0001] The invention relates to the field of material processing and forging, in particular to a forging method for alloy ingots. Background technique [0002] Ingot billet opening is the first process of thermal processing and forging of deformed superalloys. Its purpose includes two aspects. One is to break the as-cast structure to obtain a uniform and fine equiaxed grain structure and improve the plasticity of the material; the other is to change the geometry of the ingot so that For the next step of processing. For some hard-to-deform superalloy ingots, due to the addition of a large amount of alloying elements, it is necessary to prepare ingots with a diameter of less than 350mm. The element segregation of the alloy will be reduced during the solidification process, and the chemical composition and structure uniformity of the material will be improved. In order to ensure the overall quality of the ingot The quality meets the subsequent final product req...

Claims

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Application Information

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IPC IPC(8): B21J5/08B21J5/02B21J13/02
CPCB21J5/08B21J5/022B21J13/02
Inventor 李福林付锐孟令超冯滌
Owner BEIJING CISRI GAONA TECH
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