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Room temperature spinning forming method of hard-to-deform nickel-based superalloy composite curved busbar components

A nickel-based high-temperature alloy, spinning forming technology, applied in the field of plastic forming of metal materials, to achieve the effect of precise forming, material cost reduction, and reasonable design

Active Publication Date: 2021-02-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the limitations in the prior art that the preparation of difficult-to-deform metal curved busbar components requires heating and forming, the present invention provides a room temperature spinning forming method for difficult-to-deform nickel-based superalloy composite curved busbar components, which can produce precision and performance that meet the requirements of use. The required parts can save the special heating equipment in the forming process, simplify the forming conditions, and achieve the purpose of improving production efficiency and reducing manufacturing costs.

Method used

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  • Room temperature spinning forming method of hard-to-deform nickel-based superalloy composite curved busbar components
  • Room temperature spinning forming method of hard-to-deform nickel-based superalloy composite curved busbar components
  • Room temperature spinning forming method of hard-to-deform nickel-based superalloy composite curved busbar components

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Effect test

Embodiment 1

[0035] figure 1 It is a schematic diagram of a kind of hard-to-deform nickel-based superalloy cone-tube composite curved busbar component. Its material is Haynes230 nickel-based superalloy. 1 =96mm, inner diameter of mouth D 2 = 176mm and the half cone angle of the tapered part is α = 60°.

[0036] According to the sine law of shear spinning, the original wall thickness of the blank is t 0 =t / sinα=2mm; the blank is a circular sheet, and according to the principle of volume invariance, through theoretical analysis and three-dimensional software drawing, and combined with a trimming allowance of 10mm, the diameter of the circular sheet is calculated to be 243mm.

[0037] A-1. Put the blank into the heating furnace and raise the temperature to T at a rate of 10°C / s 0 = 1230°C for 60 minutes of heat preservation, and then water cooling out of the furnace, the temperature change during the heat treatment of the blank is as follows figure 2 shown.

[0038] A-2. Schematic diagr...

Embodiment 2

[0045] Image 6 It is a schematic diagram of a hard-to-deform nickel-based superalloy tube-cone-tube composite curved busbar component. The material is Haynes230 nickel-based superalloy, and the wall thickness of the part tube is required to be t=2mm and the inner diameter of the bottom is D 1 =68mm, mouth inner diameter D 2 =200mm, cone half angle α 1 =60°, total part height H=80mm and mouth tube height H 1 = 30mm.

[0046] In order to ensure that the prefabricated conical part after shear spinning does not appear unstable and wrinkled during multi-pass general spinning, the prefabricated conical part is designed to be tangent to the rounded corner of the curved generatrix-shaped mandrel. According to the geometric relationship, the semi-cone angle during shear spinning can be obtained as α=arctan[(D 2 -D 1 ) / 2(H-H 1 )]=53°, and the wall thickness of the part remains unchanged after multi-pass ordinary spinning, so the wall thickness of the blank can be obtained as t 0 =...

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Abstract

The invention discloses a room temperature spinning forming method for a difficult-to-deform nickel-base superalloy composite curved busbar component, which can form a complicated shape of a difficult-to-deform metal curved busbar component at room temperature without heating during the forming process, which is conducive to improving production efficiency and reducing costs , can be widely used in the field of plastic forming of metal materials. The steps of the present invention are as follows: heat the blank at 1141°C to 1250°C for 60 minutes for solution treatment, and then cool it; design a conical mandrel and a butterfly wheel, shear and spin the blank to form a prefabricated cone; design The mandrel of the curved busbar and the composite surface rotary wheel use the prefabricated conical part as the prefabricated blank, and use the circular arc forward trajectory to perform multi-pass ordinary spinning to form a composite curved busbar component; for the straight cylinder mouth of the composite curved busbar component Trimming, the trimming allowance is 10-15mm.

Description

technical field [0001] The invention relates to the technical field of plastic forming of metal materials, in particular to a room temperature spinning forming method of a nickel-based superalloy composite curved bus bar component. Background technique [0002] Difficult-to-deform metals refer to a class of metal materials with complex chemical composition and high content of alloy elements, which have the characteristics of high deformation resistance, low plasticity or severe work hardening during processing at room temperature, such as nickel-based superalloys. Refractory metals are widely used in high-end technical fields such as aviation, aerospace, chemical industry, and ships because of their high strength, good oxidation resistance and corrosion resistance. Curved generatrix components are a kind of parts with a wide range of applications, such as cone-tube composite curved generatrix components for aero-engine combustor casings. However, due to its complex shape, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/16C22F1/10
CPCB21D22/16C22F1/10
Inventor 夏琴香张义龙程秀全肖刚锋
Owner SOUTH CHINA UNIV OF TECH
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