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Strengthening device and method for selective laser melting additive manufacturing component

A technology of laser selective melting and additive manufacturing, which is applied in the field of additive manufacturing strengthening, can solve the problems of component shape deviation, metal powder adhesion, etc., and achieve the effect of improving the dispersion

Pending Publication Date: 2022-03-04
HUANGSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are still major defects in the existing technology. For example, the condensed metal powder will adhere to the outside of the component formed by laser heat treatment. The metal powder adheres completely to the component, causing deviations in the morphology of the final component

Method used

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  • Strengthening device and method for selective laser melting additive manufacturing component
  • Strengthening device and method for selective laser melting additive manufacturing component
  • Strengthening device and method for selective laser melting additive manufacturing component

Examples

Experimental program
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Effect test

Embodiment 1

[0040]A strengthening device for laser selective melting and additive manufacturing components, including a forming platform 1 provided with a forming tank 3 and a powder storage tank 4, the forming tank 3 and the powder storage tank 4 can be square or round, and the powder storage tank 4 Metal powder is stored, and above the forming platform 1 is communicated with a working box 2 with a laser component, a powder pushing component and a heating component inside. The laser component includes a laser probe 31 for selective laser melting and a laser probe for laser peening located above the forming tank 3 32. Use the computer to perform slice discrete and scan path planning on the three-dimensional model of the component to be processed, and obtain the slice profile information scanned by the controllable laser beam. By transferring the slice profile information, the laser probe 31 is used to control the selective melting of the laser beam to emit the laser beam. The metal powder ...

Embodiment 2

[0049] Embodiment 2 improves the linkage between the sliding pallets 6 on the basis of Embodiment 1, that is, the bottom areas of the forming tank 3 and the powder storage tank 4 are the same, and the lower ends of the two sliding pallets 6 are fixedly connected with tooth plates 7, And the two toothed plates 7 are meshed with a gear 38, the gear 38 is supported and positioned by rotating the support rod 39, and by rotating the gear 38, one toothed plate 7 is slid upwards to a certain displacement, and the other toothed plate 7 is slid downwards in the same manner. Displacement, while the bottom area of ​​the forming tank 3 and the powder storage tank 4 are the same, so that the bottom area of ​​the forming tank 3 multiplied by the sliding height of the sliding pallet 6 in the forming tank 3 is equal to the bottom area of ​​the powder storage tank 4 multiplied by the inside of the powder storage tank 4 The sliding height of sliding pallet 6.

Embodiment 3

[0051] Embodiment 3 On the basis of Embodiment 1, the structure of the trigger switch is disclosed, that is, the trigger switch includes an extrusion head 40, a sliding contact block 43 and a fixed contact block 44 arranged at intervals in sequence, and the sleeve 5 is close to the forming groove 3 The lower part of one side is provided with the extrusion head sliding groove 51 for slidingly setting the extrusion head 40, and the extruding end of the extrusion head 40 and the sliding supporting plate 6 are arranged obliquely to facilitate the extrusion of the sliding supporting plate 6 to push the extrusion head 40, And the elastic push block 41 is fixedly connected between the extrusion head 40 and the inner wall of the extrusion head sliding groove 51, the extrusion head 40 stretches out under the support of the elastic push block 41 and is located below the sliding pallet 6, and the sliding pallet 6 is downward Sliding and pressing the extrusion head 40, so that the extrusio...

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Abstract

The strengthening device comprises a control circuit which is electrically connected with a trigger switch, a power source, an air blower, a rotating motor and an electromagnet assembly through wires, and a magnetic plate, an elastic connecting rod, an electromagnet, a sliding push plate and a cleaning block which are fixedly connected in sequence are arranged in an extending groove; the cleaning block is provided with a threaded groove internally provided with a threaded rod, the threaded rod is fixedly connected with an impact head and a rotating blade, the threaded rod is rotationally connected with a rotating connecting plate, the rotating connecting plate is fixedly connected with a trigger rod, and the trigger rod is fixedly connected with a power connection rod connected with the two power connection plates in a matched mode. And the rotating blades rotate to stir, shake off and scatter the condensed metal powder on the outer side of the component, through cooperative arrangement of a trigger rod, a power connection plate and a power connection rod, a cleaning block and an impact head do reciprocating motion, and the scattering and cleaning effect on the condensed metal powder is further improved.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing strengthening, in particular to a strengthening device and method for laser selective melting additive manufacturing components. Background technique [0002] Selective laser melting technology is a technology that uses metal powder to be completely melted under the heat of a laser beam, cooled and solidified to form a shape. Under the action of high laser energy density, the metal powder is completely melted, and can be formed by metallurgical welding with solid metal after heat dissipation and cooling. SLM technology is a rapid prototyping technology that accumulates layers of three-dimensional solids through this process. However, during the laser selective melting process, due to the superimposed heat input, severe tensile stress is generated inside and on the surface of the additive manufacturing component, and then Reduced service life of additively manufactured components. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F12/00B22F10/28B33Y10/00B33Y30/00B33Y40/20B22F10/68B22F10/64
CPCB22F12/00B22F10/28B33Y10/00B33Y30/00B33Y40/20B22F10/68B22F10/64Y02P10/25
Inventor 方涛吴承伟汪彦
Owner HUANGSHAN UNIV
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