A precision forming method for large high-reinforced aluminum alloy forgings

A technology of precision forming and aluminum alloy, which is applied in the field of aluminum alloy forging, and can solve the problems that the size does not meet the requirements of the parts, the ribs are not high enough, and the forgings are difficult to form.

Active Publication Date: 2016-02-24
宝武特种冶金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For complex structures, especially large aluminum alloy parts with high ribs, it is very difficult to form the forgings, and it is easy to have problems such as insufficient ribs, and the size of the formed parts cannot meet the requirements of the parts.

Method used

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  • A precision forming method for large high-reinforced aluminum alloy forgings
  • A precision forming method for large high-reinforced aluminum alloy forgings

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Embodiment Construction

[0032] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] The precision forming method of the large-scale high-reinforced aluminum alloy forging of the present invention specifically comprises the following steps:

[0034] A. Forging design: According to the part design drawing, leave a machining allowance of 3 to 5 cm at the part that needs to be connected with other parts, set the demoulding angle of the forging to 1 to 2°, and remove the features of the parts that cannot be forged, such as through holes and sides Cavities, etc., the rest of the parts are kept unchanged in size. Die design: According to the forging design, calculate the mold cavity size according to the following formula, and design the forming die. The formula is:

[0035] S 模具 =p×S 锻件 , p=(1+α 锻件 ×ΔT) / (1+α 模具 ×ΔT)

[0036] In the formula, S 模具 is the mold cavity size, S 锻件 is the corresponding siz...

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Abstract

The invention discloses a precision forming method of a large high-strength aluminum alloy forged piece. The precision forming method comprises the steps of designing a forged piece and a mould, designing and manufacturing a prefabricated blank, forming the prefabricated blank into the forged piece in an isothermal forging manner, and the like. With the precision forming method, a large complicated aluminum alloy forged piece with a high-strength plate can be manufactured; compared with a casting piece, the forged piece is more compact in structure and fewer in defects, and the machining treatment required by the forged piece is little; the forged piece belongs to a near net shape forming precision forged piece; the product quality is greatly improved.

Description

technical field [0001] The invention relates to aluminum alloy forging technology, more specifically, relates to a precision forming method of a large high-reinforced aluminum alloy forging. Background technique [0002] At present, aluminum alloy parts with complex structures are mostly made of blanks by casting process, but casting has its inherent quality defects, such as casting cracks, lace-like structure, bright grains, insufficient pouring, shrinkage porosity, oxidized slag inclusions and pores, etc., resulting in castings The performance of the product is poor, causing the parts processed by it to have safety hazards in use, or the service life is very short. Because die forgings do not have these quality problems of castings, their performance is much better than that of castings. [0003] However, the die forging process relies on the plastic flow of the solid to fill the mold cavity. Since the fluidity of the solid aluminum alloy is far less than that of the liqu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/02B21J1/06B21J1/00B23P15/24
Inventor 吴瑞恒孟笑影庞克昌
Owner 宝武特种冶金有限公司
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