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Additive regulation and control method for reducing sinking depth of electric upsetting end face to improve mixed crystals

A technology of electric upsetting and end face, which is applied in the field of plastic forming of metal materials, which can solve the problems of uneven grain distribution at the front end of the billet and large sinking depth, so as to improve quality and performance, reduce sinking depth and reduce sinking depth Effect

Active Publication Date: 2021-05-25
CHONGQING COLLEGE OF ELECTRONICS ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method of reducing the sinking depth of the end surface of the electric upsetting to improve the mixed crystal additive control method, so as to solve the problem of the large sinking depth of the "garlic head" formed by the electric upsetting and the uneven distribution of the grains at the front end of the billet in the prior art. question

Method used

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  • Additive regulation and control method for reducing sinking depth of electric upsetting end face to improve mixed crystals
  • Additive regulation and control method for reducing sinking depth of electric upsetting end face to improve mixed crystals
  • Additive regulation and control method for reducing sinking depth of electric upsetting end face to improve mixed crystals

Examples

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Embodiment 1

[0032] Reduce the sinking depth of the end surface of the electric upsetting to improve the additive control method of the mixed crystal. The outer ring of the end where the blank and the anvil electrode are in contact is formed by arc additive manufacturing. The diameter D of the blank is 56mm, and the length L is 1500mm, the thickness of the added material is about 0.036D, which is 2mm, and the length is about 0.027L, which is 40mm. After the material is added, the end is rounded. The radius of the rounded corner is 15mm, and then the electric upsetting Forming processing.

[0033] The principle of electric upsetting is as follows: figure 1 As shown, it includes anvil cylinder 1, anvil electrode 2, secondary transformer 3, clamp cylinder 4, clamp electrode 5, blank 6 and upsetting cylinder anvil 7; during electric upsetting, anvil electrode 2 and clamp The holding electrode 5 is heated by the contact resistance and its own resistance, and the blank 6 and the additive materi...

Embodiment 2

[0038] The difference from Example 1 is that material addition is performed on both the end and the outer ring of the blank, that is, the entire end of the blank is added, and the thickness of the added material is 2 mm.

Embodiment 3

[0040] The difference from Example 2 is that the addition of material at the end of the blank is concentric with the center of the end of the blank, and the diameter d is 20 mm to 56 mm at the ring, and the thickness of the addition is 2 mm.

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Abstract

The invention relates to the technical field of metal material plastic forming, in particular to an additive regulation and control method for reducing a sinking depth of an electric upsetting end face to improve mixed crystals. The method comprises the following steps of: forming an additive on an outer ring of the end part of one end of a blank contacted with an anvil electrode, rounding the end part, and then performing electric upsetting forming processing treatment, wherein resistivity of the additive is smaller than that of a blank material, and deformation difficulty of the additive material is larger than that of the blank material. By the adoption of the regulation and control method, the aim of uniform deformation of the front-end material of the blank is achieved, meanwhile, the sinking depth of the end part of the blank is effectively reduced, grains at the front end of the blank are refined and tend to be homogenized, while the quality and the use performance of the workpiece blank are improved, the economical efficiency of forming machining is achieved, and excessive blanks do not need to be removed.

Description

technical field [0001] The invention relates to the technical field of plastic forming of metal materials, in particular to a material-adding control method for reducing the sinking depth of an electric upsetting end face to improve mixed crystals. Background technique [0002] The electric upsetting process is a complex local accurate aggregate blanking process coupled by the three fields of electricity, heat and structure. It is often used for long rod parts that require high strength, toughness, high temperature resistance, corrosion resistance and other mechanical and chemical properties and local super large variable cross-sections. Processing and forming. Apply variable direct current to the end of the electrode, the contact resistance between the anvil electrode and the billet and the resistance of the billet itself will generate a large amount of heat under the action of the current, and realize the local rapid heating of the billet. At the same time, a certain upset...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J1/06B21J5/08
CPCB21J1/06B21J5/08Y02P10/25
Inventor 佟莹
Owner CHONGQING COLLEGE OF ELECTRONICS ENG
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