Flange-edge-free forming method of thin-wall metal sheet metal part

A metal component without flange technology, applied in the field of forming and manufacturing thin-walled metal components, which can solve the problems of slab size and width that do not meet the requirements, metal thin-walled sheet metal components cannot be flanged, and flange areas are wrinkled or cracked. , to achieve the effect of simplifying mold design, reducing external dimension requirements and improving surface quality

Active Publication Date: 2020-07-14
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a flangeless forming method for metal thin-walled sheet metal components, which can solve the problem that the existing drawing or bulging process uses the outer edge flange, which causes the material with poor plastic formability to be easily formed. Wrinkling or cracking in the flange area, low material utilization rate and high manufacturing cost for high-performance metal materials and precious metal materials, and problems such as the size of the existing slab, especially the width size, will not meet the requirements for large-scale components

Method used

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  • Flange-edge-free forming method of thin-wall metal sheet metal part
  • Flange-edge-free forming method of thin-wall metal sheet metal part
  • Flange-edge-free forming method of thin-wall metal sheet metal part

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Effect test

Embodiment 1

[0030] Example 1: Combining figure 1 , figure 2 , image 3 ,Figure 4, Figure 5 , Figure 6 Illustrate, the non-flange forming method of the thin-walled metal sheet metal component that the present invention proposes, this method is to carry out according to the following steps:

[0031] The invention provides a flangeless forming method of a thin-walled metal sheet metal member, comprising the following steps:

[0032] Step 1, the design of the original blank. Carry out feature analysis on thin-walled metal components, and determine the material and outline dimensions of the original slab required by theoretical calculation or simulation methods. Since the forming of the original slab does not require a flange area, the size of the original slab is selected It is consistent with the maximum cross-sectional size of the parting surface of the mold, and then it is prepared by cutting with a blank cutting machine or punching through a blanking die;

[0033] Step 2: Determi...

Embodiment 2

[0041] Example 2: Combining figure 1 Note that in step 1, the material of the selected original slab is 5A06 aluminum alloy, the thickness is 2mm, and the external dimension is a circle with a diameter of 150mm. Other steps are the same as in embodiment 1.

[0042] The beneficial effects of this embodiment are: the 5A06 aluminum alloy has high specific strength, strong corrosion resistance and good weldability, and is widely used in parts such as fairings and fuel storage tanks in aviation and aerospace fields.

Embodiment 3

[0043] Example 3: Binding figure 2 Note that in step 2, the material of the upper cladding slab and the lower cladding slab is 1Cr18Ni9Ti stainless steel plate with a thickness of 1mm, and a circle with a diameter of 200mm is selected as the outer dimension. The other steps are the same as in Example 1.

[0044] The beneficial effects of this embodiment are: 1Cr18Ni9Ti has good overall performance, high plasticity and toughness, and its elongation, reduction of area and impact value are all high, and the elongation of 1Cr18Ni9Ti is 40%. Through the upper and lower stainless steel clad slabs , reducing the two-way tensile stress at the top and bottom of the original slab, reducing the stress and strain gradients in the deformation zone of the original slab, and making the stress and strain distribution in the entire bulging zone more uniform, thereby making the bulging deformation more uniform.

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Abstract

The invention belongs to the technical field of thin-wall metal part forming manufacturing, and provides a flange-edge-free forming method of a thin-wall metal sheet metal part. The method comprises the following steps of raw blank design; determining and preparing of a coating plate blank; combination of the coating plate blank; mold assembly seal; forming of the coating plate blank; pressure medium discharge; decomposing of the coating plate blank; and thin-wall part aftertreatment. During coating plate blank forming, an original plate blank does not need a flange area, for a material with poor plastic making performance, wrinkle defects caused by local bulging, local thinning, local cracking or interface material distribution unevenness can be avoided, in addition, the original plate blank during coating plate blank forming does not need a flange area, and particularly, when the thin-wall metal part with the large size is formed, the problem that the appearance size of a needed original plate blank exceeds the preparing capacity of an existing plate blank can be solved.

Description

technical field [0001] The invention belongs to the technical field of forming and manufacturing thin-walled metal components, in particular to a flangeless forming method for thin-walled metal sheet metal components. Background technique [0002] Thin-walled metal sheet metal components are a very common type of structural parts in the aerospace field and in vehicles, high-speed rail and other transportation equipment. According to the service requirements of thin-walled metal sheet metal components such as tensile strength, external dimensions, corrosion resistance, etc., it is first necessary to select the material of the component and optimize the design of the shape and size. Then, select a suitable metal slab, and use a suitable forming method to manufacture the required thin-walled metal sheet metal components. The shape, size, wall thickness distribution, and mechanical properties of the formed thin-walled metal sheet metal components must meet the design requiremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D35/00B21D26/021
CPCB21D26/021B21D35/007
Inventor 何祝斌陈豪宇张蓓佳梁江凯林艳丽孔朋王志彪苑世剑
Owner DALIAN UNIV OF TECH
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