Gas protective cover device for laser clad coaxial powder feeding gun

A laser cladding and protective cover technology, applied in the direction of metal material coating technology, process efficiency improvement, energy efficiency improvement, etc. Effect

Active Publication Date: 2021-03-26
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is that the prior art cannot avoid the oxidation of the solidified cladding layer, and the entrainment of air when forming an inert protective gas layer, causing the coating to oxidize

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  • Gas protective cover device for laser clad coaxial powder feeding gun
  • Gas protective cover device for laser clad coaxial powder feeding gun
  • Gas protective cover device for laser clad coaxial powder feeding gun

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Embodiment Construction

[0032] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

[0033] In the drawings, components with the same structure are denoted by the same numerals, and components with similar structures or functions are denoted by similar numerals. The size and thickness of each component shown in the drawings are shown arbitrarily, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of parts is appropriately exaggerated in some places in the drawings.

[0034] In the description of the embodiments of the present application, it should be clear that the terms "center", "middle", "upp...

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Abstract

The invention discloses a gas protective cover device for a laser clad coaxial powder feeding gun, and relates to the technical field of laser material processing. The gas protective cover device comprises a protective cover shell, a protective cover inner core and a porous copper plate strip, wherein the protective cover shell sleeves the outer side of the protective cover inner core; the porouscopper plate strip is arranged at the lower end of the protective cover shell; a first cavity is formed by the inner side surface of the protective cover shell, the outer side surface of the protective cover inner core and the upper surface of the porous copper plate strip; one end of the first cavity is arranged to communicate with the outer side face of the protective cover shell through a firstthrough hole, and the other end of the first cavity communicates with the lower surface of the porous copper plate strip through the porous copper plate strip; and the porous copper plate strip is configured to slow down the flow velocity of airflow penetrating through the porous copper plate strip. Through the implementation of the gas protective cover device, a solidified cladding layer can beprotected from being oxidized, the airflow of a protective gas layer can be optimized, oxygen brought by gas turbulence is reduced, and the oxidation of a coating is avoided.

Description

technical field [0001] The invention relates to the technical field of laser material processing, in particular to a gas shield device for a laser cladding coaxial powder feeding gun. Background technique [0002] Laser cladding is a surface modification technology. By means of synchronous or preset materials, external materials are added to the molten pool formed after the substrate is irradiated by laser, and the two are co-solidified to form an extremely low dilution and A surface coating that is metallurgically combined with the base material, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance, and electrical properties of the base material surface; in order to avoid or reduce coating oxidation during laser cladding , the main method is to blow inert gas into the laser melting pool, so that the molten metal is out of contact with the oxygen in the air, so as to protect the molten metal from oxidation. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/10Y02P10/25
Inventor 姚成武庞小通李铸国龚群甫冯珂王志杰
Owner SHANGHAI JIAO TONG UNIV
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