Forming method for large multi-rib disc-shaped forged piece

A basin-shaped, large-scale technology, applied in the field of forging and forming, can solve the problems of gnawing and filling of ribs, and achieve the effect of increasing metal fluidity, reducing deformation resistance, and eliminating gnawing defects

Active Publication Date: 2019-02-19
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for forming large-scale multi-rib pot-shaped forgings, which is produced by closed die forging, which solves the problems of rib filling and gnawing, simplifies the mold manufacturing and production process, and saves trimming dies and excessive burrs Consumption, improve the surface quality of forgings

Method used

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  • Forming method for large multi-rib disc-shaped forged piece
  • Forming method for large multi-rib disc-shaped forged piece
  • Forming method for large multi-rib disc-shaped forged piece

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Embodiment Construction

[0030] like Figure 1-7 As shown, the height of the large multi-rib basin-shaped forging is 66.4 mm, and the inner bottom surface is provided with eight narrow ribs 5. The forging die includes an upper die 1 and a lower die 2, and the lower die 2 is provided with eight forming grooves 6. The ribs 5 are formed in the forming groove 6 of the lower die 2, and the cavity depth of the upper die 1 is 11.4 mm larger than the height of the large multi-rib basin-shaped forging; the center of the lower die 2 is provided with a crescent-shaped positioning groove 7. The inner wall of the upper mold 1 has a draft angle of 6°, the outer wall of the lower mold 2 has a combined draft angle of 3° and 6°, and the height of the 6° draft angle of the outer wall of the lower mold 2 is 40mm.

[0031] The forming method of large multi-rib basin-shaped forgings is formed by closed die forging, which specifically includes the following steps:

[0032] 1) Cutting: Calculate the diameter and length of...

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Abstract

The invention belongs to the field of forging and forming, and particularly relates to a forming method for a large multi-rib disc-shaped forged piece. According to the technical scheme adopted by theinvention, the forming method for the large multi-rib disc-shaped forged piece is characterized in that height of the large multi-rib disc-shaped forged piece is 60-70 mm, eight narrow ribs are arranged on the inner bottom surface of the large multi-rib disc-shaped forged piece, closed type mould-forging forming is adopted, the forging mould comprises an upper mould and a lower mould, eight forming slots are formed in the lower mould, the narrow ribs are formed in the forming slots of the lower mould, and depth of a mould cavity of the upper mould is greater than height of the large multi-ribdisc-shaped forged piece by 10-12 mm. The forming method for the large multi-rib disc-shaped forged piece provided by the invention adopts closed type mould-forging production, solves the rib fillingand chewing-damaging problem, simplifies a mould manufacturing and producing process, saves consumption of a trimming mould and excessive deckle-edge materials, and improves surface quality of the forged piece.

Description

technical field [0001] The invention belongs to the field of forging and pressing, and in particular relates to a forming method of a large multi-rib pot-shaped forging. Background technique [0002] Large pot-shaped parts with multiple ribs in the inner cavity are generally formed by casting. Considering the structural performance and metallurgical quality requirements of the parts, they are later improved to die forging. When forging on die forging hammer equipment, the ribs of the forging are not easy to fill and are prone to defects such as folding and gnawing. as attached figure 1 As shown, the conventional method is to use open die forging to form the bottom of the pot by means of the lower die, and part the die at the middle of the side wall height to facilitate the filling of the pot edge. Due to the swing of the upper hammer head in the conventional forming method, the ribs are gnawed every time it is struck, and folding defects appear on the bottom of the pelvis....

Claims

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Application Information

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IPC IPC(8): B21J5/00B21J5/02
CPCB21J5/002B21J5/025
Inventor 马拴柱臧德昌金悦刘丽宇蔡梅
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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