Forging process of GH4169 alloy bar

A GH4169, 1. GH4169 technology, applied in the forging process field of GH4169 alloy rods, can solve the problems that the grain size difference has not been well resolved, the control of the grain size difference needs to be improved, and the grain size is refined. Achieve the effect of improving the internal quality of the billet and the uniformity of grain size

Active Publication Date: 2019-02-22
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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Problems solved by technology

From the published literature or patents, there are many studies on the precipitation mechanism of GH4169 alloy structure strengthening phase and heat treatment system, and relatively few studies on forging process theory. Patent 201510848784. Refinement

Method used

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  • Forging process of GH4169 alloy bar
  • Forging process of GH4169 alloy bar
  • Forging process of GH4169 alloy bar

Examples

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Embodiment 1

[0029] The φ508 electroslag ingot is subjected to homogenization heat treatment, kept at 1150°C for 1 hour, and forged on a 45MN fast forging machine for 5 times, three upsetting and three pulling out. Put it into a heating furnace at 1100°C for solid solution treatment, and keep it warm for 1.5 hours; the second upsetting deformation is 55%, and the length is drawn first, and the edge can be lightly chamfered during the drawing process, and the deformation is controlled at 14% to 35%. , into a heating furnace at 1100°C for solid solution treatment, and held for 2 hours; the third upsetting deformation is 50% to 60%. %, the third elongation is completed with two fires, the penultimate heat is solution treated at 1100°C for 1.5h, and the last fire is heated at 1050°C for 1h. The quick-forging intermediate billet is air-cooled, turned and rounded, and then sent to a heating furnace at 1050±10°C for solution treatment for 2 hours. Finally, the intermediate billet is sent to the ...

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Abstract

The invention relates to a forging process of a GH4169 alloy bar, in particular to the forging process of the GH4169 alloy bar in the technical field of high temperature alloy forging. In order to solve the technical problem, the invention adopts the forging process of the GH4169 alloy bar. The forging process comprises the following steps: A, homogenizing heat treatment; B, five heating numbers-three upsetting-three drawing blooming forging; C, air cooling on an intermediate slab forged in the step B, turning and rounding, then feeding into a heating furnace of the temperature of 1040 to 1060DEG C, and solid solution treatment for 2 hours; and D, radial forging and blooming forging after the step C is completed. The forging process can sufficiently improve the interior quality and the grain size uniformity of a blank, and reduce the grain size grade difference.

Description

technical field [0001] The invention relates to a forging process of GH4169 alloy rods, in particular to a forging process of GH4169 alloy rods in the technical field of high-temperature alloy forging. Background technique [0002] GH4169 alloy has excellent high-temperature comprehensive mechanical properties, and is widely used in the aerospace field, and GH4169 alloy rod is a common supply form and tends to be a large-scale (>φ200) production process. Due to the particularity of the deformation law of the GH4169 alloy, it is necessary to increase the deformation of the GH4169 alloy in order to obtain a large-scale bar with a relatively fine and uniform grain size. At present, in order to increase the deformation of GH4169 alloy, on the one hand, it is achieved by increasing the size of the alloy ingot shape, and on the other hand, it is realized by the forging process, but the method of increasing the ingot shape has limitations and is easy to increase segregation defe...

Claims

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Application Information

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IPC IPC(8): C22F1/10B21J5/00
CPCB21J5/002C22F1/10
Inventor 赖宇张健蒋世川付建辉
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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