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Large-scale forging dies for near-isothermally forging disc forgeable piece

A disk-shaped forging, isothermal forging technology, applied in the direction of manufacturing tools, forging/pressing/hammer devices, forging/pressing/hammering machinery, etc., can solve the waste of precious high-temperature alloy materials, poor interchangeability of the overall forging die, waste, etc. problems, to achieve the effect of saving precious superalloy materials, reducing the difficulty of machining, and improving the service life

Active Publication Date: 2008-07-23
GUIZHOU ANDA AVIATION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The manufacture and processing of large forging dies is difficult and the cost is high. For large casting superalloy integral molds, the casting characteristics of casting superalloys themselves determine the high reject rate of mold castings, resulting in a lot of waste of valuable superalloy materials. The upper superalloy is a difficult-to-machine material and the mold body is larger, which increases the difficulty of mold processing, resulting in high mold manufacturing costs;
[0007] The interchangeability of the overall forging die is poor. A set of dies needs to be provided for a forging of one shape, and another die must be provided when forging a forging of similar shape and size, and when a part of the die is partially damaged, the entire die will be scrapped , resulting in serious consumption and waste of mold materials

Method used

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  • Large-scale forging dies for near-isothermally forging disc forgeable piece
  • Large-scale forging dies for near-isothermally forging disc forgeable piece
  • Large-scale forging dies for near-isothermally forging disc forgeable piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Fig. 1 shows the longitudinal section structure of the first large-scale forging die along its center line of near isothermal forging disc forging, this forging die is made up of upper forging die 11 and lower forging die 12, described upper forging die 11 and lower forging die The forging die 12 is formed by combining and assembling a plurality of modules respectively.

[0037] Upper forging die 11 is made up of upper die base 14, upper die core block 13 and upper die surface block 15. The upper mold base 14 is a ring structure and there is a ring 14 larger than the inner annular surface at the position where the top of the inner annulus of the mold base intersects with the upper end surface a ; The upper mold core block 13 is a cylindrical structure, and there is a raised ring 13 at the intersection of the upper part of its outer peripheral surface and its upper end surface a , there is a circular groove 13 with a slope in the middle of its bottom end face b ;The up...

Embodiment 2

[0043] Fig. 2 shows the longitudinal section structure of the second large-scale forging die along its center line of near isothermal forging disc forging, and this forging die is made up of upper forging die 21 and lower forging die 22, and described upper forging die 21 and lower forging die The forging die 22 is formed by combining and assembling a plurality of modules respectively.

[0044] Upper forging die 21 is made up of upper die base 24 , upper die core block 23 and upper die surface block 25 . The upper mold base 24 is a ring structure and there is a ring 24 larger than the inner annular surface at the position where the top of the inner annulus of the mold base intersects with the upper end surface a ; The upper mold core block 23 is a cylindrical structure, and there is a raised ring 23 at the intersection of the upper part of its outer peripheral surface and its upper end surface a ;The upper mold surface block 25 is a ring structure, and there is a raised ring ...

Embodiment 3

[0050] Fig. 3 shows the longitudinal section structure of the third large-scale forging die along its center line of nearly isothermally forging disc-shaped forgings, this forging die is made up of upper forging die 31 and lower forging die 32, and described upper forging die 31 and lower forging die The forging die 32 is formed by combining and assembling a plurality of modules respectively.

[0051] Upper forging die 31 is made up of upper die base 34 , upper die core block 33 and upper die surface block 35 . The upper die base 34 is a ring structure and there is a ring 34 larger than the inner ring surface at the position where the top of the inner ring surface of the die base intersects with the upper end face. a ; The upper mold core block 33 is a cylindrical structure, and there is a protruding ring 33 at the intersection of the upper part of its outer peripheral surface and its upper end surface a , there is a circular groove 33 with a slope in the middle of its bottom...

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Abstract

The invention discloses a large forging die of a near-isothermal forging disc-shaped forging. The forging die is provided with upper forging dies (11, 21, 31, 41) and lower forging dies (12, 22, 32, 42); the upper forging dies (11, 21, 31, 41) and the lower forging dies (12, 22, 32, 42) have closed forging cavities (16, 26, 36, 46) after being jointed together; in order to lead the forging die to be easy for manufacturing, processing, demoulding and gaining long service life, the upper forging dies (11, 21, 31, 41) and the lower forging dies (12, 22, 32, 42) are dies which consist of a plurality of modules respectively. The forging die is made of a forging high-temperature alloy K403, and mainly used for near-isothermally forging the large solid or hollow disc-shaped forgings with the external diameter more than Phi 800mm.

Description

technical field [0001] The invention relates to a forging die, in particular to a large forging die for near-isothermal forging disc-shaped forgings. Background technique [0002] When the near-isothermal forging method is used to forge high-temperature alloy or titanium alloy forgings such as large turbine disks and compressor disks of aero-engines, due to the high flow stress of the material, the forging die needs to be heated to a high temperature and at a temperature close to the forging blank. In use, the stress on the surface of the forging die is relatively large. [0003] The accompanying drawings of the Chinese invention patent specification CN101036931A disclosed on September 19, 2007 discloses a structure of a near-isothermal forging die for a high-temperature alloy disc forging. The forging die is composed of an upper forging die and a lower forging die. The lower forging die is an integral die structure, that is, the upper and lower forging dies are each proces...

Claims

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Application Information

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IPC IPC(8): B21J13/02
Inventor 张华叶俊青魏志坚吴永安张观和占立水郭浩江锦权刘志棋郑永灵
Owner GUIZHOU ANDA AVIATION FORGING
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