Closed punching method for 1Cr12Ni2WMoVNb steel high-cylinder ring piece

A technology of punching and high cylinder, which is applied in the field of punching to achieve the effect of improving appearance quality, improving consistency and reducing operation steps

Inactive Publication Date: 2017-05-31
GUIZHOU ANDA AVIATION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a closed punching method. By designing a closed punching die, the height ring is punched in the die to ensure that there will be no end surface pulling, Defects such as deformation, improve the quality of forgings

Method used

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  • Closed punching method for 1Cr12Ni2WMoVNb steel high-cylinder ring piece
  • Closed punching method for 1Cr12Ni2WMoVNb steel high-cylinder ring piece
  • Closed punching method for 1Cr12Ni2WMoVNb steel high-cylinder ring piece

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specific Embodiment approach

[0015] The main chemical element content (weight percentage) of the 1Cr12Ni2WMoVNb steel is: C content 0.11%~0.17%, Mn content ≤0.60%, Si content ≤0.60%, Cr content 11.00%~12.00%, Ni content 1.80 %~2.20%, W content 0.7%~1.0%, Mo content 0.80%~1.20%, V content 0.20%~0.30%, Nb content 0.15%~0.30%, P content ≤0.030%, S content The amount is ≤0.020%, and the balance is Fe.

[0016] The steps of this method are as follows:

[0017] The 1Cr12Ni2WMoVNb steel is cut into bars according to certain specifications; the 1Cr12Ni2WMoVNb steel bar is heated to 1170±10℃, and the temperature is maintained at (0.4~0.5) min / mm, and the furnace temperature is ≤750℃; after the heat through, the 1Cr12Ni2WMoVNb steel The bar is placed on the press, and the forging hammer is driven to upset the 1Cr12Ni2WMoVNb steel bar to a predetermined size; the upsetting 1Cr12Ni2WMoVNb steel blank 4 is put into the punching die 1, and placed together under the press, the punching die The outer wall of 1 has a dovetai...

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Abstract

The invention discloses a closed punching method for a 1Cr12Ni2WMoVNb steel-alloy high-cylinder ring piece. The closed punching method includes the steps that a punching die is designed, a fixing dovetail groove is formed in the outer wall of the punching die, a limiting pad disc for adjusting the position of a blank is arranged in the punching die, and a 1Cr12Ni2WMoVNb steel-alloy blank is punched in the punching die; meanwhile, a leaking disc is designed, a fixing dovetail groove is also formed in the outer wall of the leaking disc, a limiting hole is formed in the upper end of the leaking disc, the 1Cr12Ni2WMoVNb steel-alloy blank is precisely put on limiting control, and is punched out in the leaking disc, and punching of the 1Cr12Ni2WMoVNb steel-alloy high-cylinder ring piece is achieved. By means of the closed punching method, defects such as end-face material pulling and transformation of the blank can be prevented, and the consistency of the blank is improved. The closed punching method is used for punching of the high-cylinder ring piece.

Description

Technical field [0001] The invention relates to a punching method, in particular to a closed punching method for a 1Cr12Ni2WMoVNb steel high-tube ring. Background technique [0002] High-tube ring parts are commonly used rotating parts in aerospace and other fields. The height and wall thickness of the forging are relatively large, and they are usually formed by rolling. Rolling generally refers to radial rolling, that is, the process of reducing the wall thickness to increase the inner and outer diameters, and the height change is small; even the most advanced radial-axis bidirectional rolling ring technology can only be reduced by tapered rollers. Height, and can’t control the height well. Therefore, when making a billet, the height of the billet is usually designed to be equal to or slightly greater than the height of the ring. For high-tube ring, it is easy to cause defects such as pulling and deformation of the end face of the billet during punching, which affects the quali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/10
CPCB21J5/10
Inventor 葛金锋刘彦成陈琪刘建衣军起
Owner GUIZHOU ANDA AVIATION FORGING
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