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Electroplasticity and laser shock composite strengthening method and device for large workpiece

A technology of laser shock and electroplasticity, which is applied in the field of material surface strengthening treatment, can solve problems such as uneven stress field, achieve uniform residual stress, better effect, and reduce the expansion rate

Active Publication Date: 2021-07-23
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, it eliminates a series of problems such as work hardening, uneven stress field, and cracks caused by a single laser shock strengthening material surface, improves stress conditions, and increases fatigue life

Method used

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  • Electroplasticity and laser shock composite strengthening method and device for large workpiece
  • Electroplasticity and laser shock composite strengthening method and device for large workpiece
  • Electroplasticity and laser shock composite strengthening method and device for large workpiece

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Embodiment Construction

[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0038] In describing the present invention, it is to be understood that the terms "central", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "axial", The orientation or positional relationship indicated by "radial", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description , rather than indicating or implying that the device or elem...

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Abstract

The invention discloses an electroplasticity and laser shock composite strengthening method and device for a large workpiece. The device comprises a current applying component, a laser component and a water spraying component, wherein the current applying component is used for providing current in order to enable a workpiece to be machined to be electroplastic; the laser component is used for providing laser energy in order to machine the workpiece to be machined; and the water spraying component forms a flat water curtain on the workpiece to be machined to serve as a restraint layer for laser shock treatment. The electroplasticity and the laser shock are combined to reinforce the material, and compared with single laser shock, a series of problems of strain hardening, non-uniform and non-deep stress distribution, cracks, dislocation and the like can be solved. Meanwhile, for the large workpiece, a current collector is provided, the current can be fully led to a machining area, a large amount of loss of the current in the large workpiece is reduced, and the high-density current is formed in a to-be-strengthened area. The method can solve the problem that current energy is small, the machining quality is remarkably improved, and the machining efficiency is improved.

Description

technical field [0001] The invention relates to the field of material surface strengthening treatment, in particular to an electroplastic and laser shock composite strengthening method and device for large workpieces. Background technique [0002] In the current machinery industry, especially in the fields of aerospace, construction machinery, marine engineering and shipbuilding, these fields put forward higher and higher requirements for the reliability of mechanical parts in service, which requires mechanical parts to have high Comprehensive properties such as surface hardness, high wear resistance, high fatigue resistance, high surface finish and good corrosion resistance are the main problems facing my country's machinery manufacturing industry at present. [0003] Electroplastic processing is a new type of processing and technology. It applies high-energy pulse current to electrically stimulate the processed material (electroplastic processing) during ordinary metal defo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D10/00C22F3/00
CPCC21D10/005C22F3/00
Inventor 姜银方赵健朱福文王思理董正乾
Owner JIANGSU UNIV
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