Forging method for high temperature alloy GH4169 round rod

A technology of GH4169 and high-temperature alloys, which is applied in the direction of manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., and can solve problems such as increasing core deformation

Active Publication Date: 2015-07-22
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above defects, the present invention provides a forging method for high-temperature alloy GH4169 round rods. This method not only reduces the excessive temperature drop during forging, but also increases the deformation of the core to eliminate metallurgical defects, and finally obtains excellent surface quality.

Method used

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  • Forging method for high temperature alloy GH4169 round rod
  • Forging method for high temperature alloy GH4169 round rod
  • Forging method for high temperature alloy GH4169 round rod

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Embodiment

[0032] A forging method of high-temperature alloy GH4169 round bar:

[0033] When using the radial forging unit to forge GH4169 round rods, two fires are used. The first fire uses flat hammers to forge blanks, and the second fire uses round hammers for precision forging into specifications; forging billets and precision forging processes As shown in Table 1 and Table 2, respectively. After the completion of forging, the surface quality of the specification product is good, no obvious spiral pattern is found, and no defect wave is found in the flaw detection, which meets the qualified requirements.

[0034] Table 1 Blanking process of GH4169 radial forging machine (flat hammer head)

[0035]

[0036] Table 2 GH4169 precision forging process (round hammer)

[0037]

[0038]

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Abstract

The invention belongs to the field of high temperature alloy forging, and particularly relates to a forging method for a GH4169 round rod. According to the forging method for the high temperature alloy GH4169 round rod, a twice-heating production mode is adopted, in first heating, an intermediate billet is formed by adopting a flat hammer to conduct hammer cogging, and in second heating, a product with needed specifications is formed by adopting a bruting hammer to conduct precision forging. By means of the forging method for the high temperature alloy GH4169 round rod, the problems that forging cracking is prone to occurring due to the fact that the temperature drops too fast in using an existing forging technology, and the surface quality is poor and the center strain of the whole forging process is insufficient due to the fact that matching of the precision forging technology is unreasonable are solved, a surface spiral thread of the forged round rod is greatly reduced, and the flaw detection yield is greatly improved.

Description

Technical field [0001] The invention belongs to the forging field of high-temperature alloys, and specifically relates to a forging method of GH4169 round bars. Background technique [0002] The superalloy GH4169 is a nickel-based superalloy with body-centered tetragonal γ" and face-centered cubic γ'phase precipitation strengthening. It has good comprehensive performance in the temperature range of -253~700℃, and its yield strength is below 650℃. The first place in deformed superalloys, and has good fatigue resistance, radiation resistance, oxidation resistance, corrosion resistance, as well as good processing performance, welding performance and long-term structural stability. It can manufacture various parts with complex shapes. It has been widely used in aerospace, energy, chemical and other industrial sectors, [0003] GH4169 alloy forging rods can be directly used to manufacture structural parts such as shafts used in aviation, and can also be used to manufacture round tube b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21J7/16
Inventor 肖强周茂华李俊洪常军张开华罗许
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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