Method for smithing GH4169 alloy plate shaped forgeable piece in air at an approximately equal temperature

A GH4169, isothermal forging technology, applied in the field of warm forging, can solve the problems of difficulty in obtaining consolidated powder blanks, many technical problems and great difficulties, and achieve the effects of excellent structure and performance, reducing forging costs and refining grains

A GH4169, isothermal forging technology, applied in the field of warm forging, can solve the problems of difficulty in obtaining consolidated powder blanks, many technical problems and great difficulties, and achieve the effects of excellent structure and performance, reducing forging costs and refining grains

CN100467156CActive Publication Date: 2009-03-11GUIZHOU ANDA AVIATION FORGING
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  • Method for smithing GH4169 alloy plate shaped forgeable piece in air at an approximately equal temperature
  • Method for smithing GH4169 alloy plate shaped forgeable piece in air at an approximately equal temperature
  • Method for smithing GH4169 alloy plate shaped forgeable piece in air at an approximately equal temperature

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Embodiment Construction

[0028] To implement the near-isothermal forging method of the GH4169 alloy disc forging in the air of the present invention, it is necessary to provide a forging furnace, a rolling mill, a forging press with a forging die and a ring heating furnace, and cast or forged GH4169 alloy original bars.

[0029] figure 1 The process flow of near-isothermal forging of GH4169 alloy disc forging in air is shown.

[0030] figure 2 It shows the assembly situation of the forging press 9, the upper forging die 6, the lower forging die 4 and the annular heating furnace 3 for implementing the near-isothermal forging method described in the present invention, and the forging press 9 is fixed on the workbench 1 in sequence. There is a lower anvil 2 and a lower forging die 4. The workbench 1 is connected with the slider 8 through the guide post 10. The slider 8 can slide up and down on the guide post 10. The upper anvil 7 and the upper Forging die 6; an annular heating furnace 3 is installed b...

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Abstract

The invention discloses a close isothermal forging method of GH4169 alloy tray-shaped forging in the air, the technological process is that: making GH4169 finegrain roughcast adopting method of upsetting, punching and rolling after heating GH4169 alloy original rod material to 995-1005 DEG C; respectively heating the finegrain roughcast to 995-1005 DEG C and forging die to 950-965 DEG C; diefilling and positioning the finegrain roughcast; while heating finegrain roughcast and forging die to keep the heating warm humidity; forging die and forging press the finegrain roughcast forming under the 55MN to 65MN forging pressure and 0.01s-1 to 0.05s-1 strain rate; obtaining the tray-shaped forging; water-cool processing the tray-shaped forging. Adopting forging method of the invention can realize forming of the GH4169 alloy material tray-shaped forging difficult to deform and obtain the GH4169 alloy tray-shaped forging with weensy crystal grain, high intensity and complicated shape.

Description

technical field [0001] The invention relates to a forging method of a deformed high-temperature alloy forging, in particular to a near-isothermal forging method of a GH4169 alloy disc-shaped forging in air. Background technique [0002] GH4169 alloy is a precipitation-strengthened nickel-chromium-iron-based high-temperature alloy. The alloy has high strength. The disc-shaped forgings of this alloy, such as turbine discs, are widely used in the core of aerospace engines such as aviation and aerospace below 650 ° C. The hot-end parts can work for a long time in the environment of high temperature, high stress, high speed, and high-speed airflow, and adapt to the extreme working environment requirements of harsh service environment, heavy workload, and high failure frequency. Due to the high strength and narrow deformation temperature range of this alloy, its deformation resistance is relatively large, which makes forging difficult. In addition, in order to obtain high-strength...

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Application Information

Patent Timeline
11 Mar 2009
Publication
CN100467156C
IPC
B21J1/06; B21J5/06; B21J13/02; B21K1/32
Inventors
张华; 叶俊青