GH4169 high-temperature alloy bar and manufacturing method thereof

A technology of GH4169 and superalloy, which is applied in the preparation of the above-mentioned GH4169 superalloy bar and in the field of GH4169 superalloy bar, can solve the problems such as insufficient uniformity of structure, achieve uniform structure, uniform low-magnification structure, and improve uniformity of structure Effect

Active Publication Date: 2016-02-17
西部超导材料科技股份有限公司
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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 GH4169 superalloy rod, which solves the problem that the structure uniformity of the existing GH4169 superalloy rod is not consistent enough

Method used

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  • GH4169 high-temperature alloy bar and manufacturing method thereof
  • GH4169 high-temperature alloy bar and manufacturing method thereof
  • GH4169 high-temperature alloy bar and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of Φ200mm GH4169 superalloy rods:

[0037] Step 1: The size of the billet casting ingot is Ф508mm. The GH4169 ingot that has been homogenized and heat-treated is subjected to one-shot billet forging. The ingot is subjected to two upsetting and one drawing processes on a 4500T fast forging machine. The heating temperature is 1080°C. The deformation amount of thick and elongated is 40%, and the deformation amount of each pass is 25%. After the forging is completed, the surface temperature of the billet is 900°C, and the billet is obtained;

[0038] Step 2: Then carry out the 2nd to 3rd fire forging on the blank obtained in step 1, and alternately upsetting and elongating the blank in the radial and axial directions on the 4500T fast forging machine. The heating temperature is 1050°C, upsetting and The amount of deformation for elongation is 30%, the amount of deformation for each pass is not less than 25%, and the surface temperature of the billet after forgin...

Embodiment 2

[0042] Preparation of Φ250mm GH4169 superalloy rods:

[0043] Step 1: The GH4169 ingot that has been homogenized and heat-treated is subjected to one-shot billet forging, and the ingot is subjected to two upsetting and one drawing processes on a 4500T fast forging machine. The heating temperature is 1110°C, and the deformation of upsetting and elongating is 60%, the amount of deformation per pass is 30%, and the surface temperature of the billet after forging is 950°C, and the billet is made;

[0044] Step 2: Then carry out the 2nd to 3rd fire forging for the billet obtained in step 1, and alternately upsetting and elongating the billet radially and axially on the 4500T fast forging machine. The heating temperature is 1070°C, upsetting and The amount of deformation for elongation is 45%, the amount of deformation for each pass is 30%, and the surface temperature of the billet after forging is 900°C;

[0045] Step 3: Then carry out the 4th to 5th heat forging of the billet, an...

Embodiment 3

[0048] Preparation of GH4169 superalloy rods of Φ300mm:

[0049] Step 1: The GH4169 ingot that has been subjected to homogenization heat treatment is subjected to one-shot billet forging, and the ingot is subjected to two upsetting and one drawing processes on a 4500T fast forging machine. The heating temperature is 1150°C, and the deformation of upsetting and elongating is 80%, the amount of deformation per pass is 35%, and the surface temperature of the billet after forging is 1000°C, and the billet is made;

[0050] Step 2: Then carry out the 2nd to 3rd fire forging on the blank obtained in step 1, and alternately upsetting and elongating the blank in the radial and axial directions on the 4500T fast forging machine. The heating temperature is 1100°C, upsetting and The amount of deformation for elongation is 60%, the amount of deformation for each pass is 35%, and the surface temperature of the billet after forging is 950°C;

[0051] Step 3: Then the billet is forged in th...

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Abstract

The invention discloses a GH4169 high-temperature alloy bar. The specification of the bar is phi 200-300 mm, the flaw detection level of the bar is not smaller than phi 1.2-9 dB, and the grain size is at the level 6 to the level 8. The invention further discloses a manufacturing method for the GH4169 high-temperature alloy bar. The method includes the steps that billet forging of the first heating number is carried out on a GH4169 ingot which is subjected to homogenizing heat treatment, and the ingot is subjected to two-upsetting and one-drawing processes; an obtained billet is subjected to reversing upsetting-drawing forging of the second and third heating numbers; drawing-out forging of the fourth and fifth heating numbers is carried out; and then chamfering and rolling forging of the sixth and seventh heating numbers is carried out to obtain the GH4169 high-temperature alloy bar. By means of the manufacturing method, the structure homogeneity of the bar is effectively improved, and the flaw detection level of the bar with the specification being phi 200-300 mm is made to reach more than phi 1.2-9 dB; after the bar is subjected to heat treatment, the macrostructure is uniform, and the grain size reaches the level 6 to the level 8; meanwhile, the performance of the large-specification bar subjected to standard heat treatment can meet corresponding standard requirements.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal processing, and relates to a GH4169 high-temperature alloy rod, and also relates to a preparation method of the above-mentioned GH4169 high-temperature alloy rod. Background technique [0002] The GH4169 superalloy is a precipitation-strengthened nickel-based superalloy with body-centered cubic γ' and face-centered cubic γ'' as strengthening phases. The yield strength ranks first in the wrought superalloy, and has good fatigue resistance, radiation resistance, oxidation resistance, corrosion resistance, and good processing performance. The alloy is used to manufacture parts with complex shapes, and has been widely used in aerospace, petroleum and nuclear energy industries. [0003] In the field of aviation, GH4169 superalloy is mainly used to manufacture various discs, rings and blades in aero-engines that work below 650 °C. In order to ensure the reliability of high-temperature compon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/10
Inventor 杜刚曹国鑫高玉社郝芳李少强杜予晅付宝全张丰收刘向宏冯勇
Owner 西部超导材料科技股份有限公司
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