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Metal additive preparation method for curved-surface thin shell structure

A metal additive, layer structure technology, applied in the direction of additive processing, additive manufacturing, energy efficiency improvement, etc., to achieve the effect of improving corrosion resistance and fatigue resistance, high operating efficiency, and reducing maintenance costs

Active Publication Date: 2016-10-12
四川天塬增材制造材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it can only be used for materials such as plates, and there is no better way to generally solve the processing problems of structural parts with curved surfaces and thin shells. Only machining methods can be used.

Method used

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  • Metal additive preparation method for curved-surface thin shell structure

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Embodiment Construction

[0023] Attached below figure 1 The specific steps of a metal additive manufacturing method with a curved surface and thin shell structure of the present invention are described in detail.

[0024] A method for preparing a metal additive material with a curved surface thin shell structure, characterized in that the preparation method comprises the following steps:

[0025] 1) According to the surface parameter equation of the curved surface thin shell structure, the characteristic analysis of the surface set is carried out to obtain the scanning path during laser selective melting or laser cladding, and the mobile scanning method is determined to be the partition mobile scanning method. During the forming process of layer-by-layer additive manufacturing In , control the process parameters of the laser to scan the boundary contour of the surface layer and each partition. The shape of each partition is square, rectangular or circular, and the scanning method is skip or continuous...

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Abstract

The invention relates to a metal additive preparation method for a curved-surface thin shell structure. The metal additive preparation method comprises the following steps: 1) carrying out curved-surface set characteristic analysis according to a curved-surface parameter equation of the curved-surface thin shell structure to obtain a laser scanning path, and determining a partition movable scanning manner; 2) determining to pre-arrange temporary reinforcing ribs on a curved-surface thin shell according to a type of the curved-surface thin shell structure; 3) carrying out selective laser melting or laser cladding to obtain a curved-surface thin shell formed part; and 4) carrying out heat treatment or fine machining treatment on the curved-surface thin shell formed part. The preparation method has the following characteristics: the working procedures of the method are relatively simple, the working efficiency is effectively increased, the deformation amount of the formed part can meet the needs of use and design, the corrosion resistance and fatigue resistance are greatly improved, the service life can be prolonged, the manufacturing cost is reduced, and the like.

Description

technical field [0001] The invention relates to the technical field of metal additive manufacturing, in particular to a method for preparing metal additive materials with a curved surface and thin shell structure. Background technique [0002] At present, in the processing of curved plate parts, a new technology of hydroforming has been introduced, that is, liquid is used as the force transmission medium to replace the rigid punch or die to transmit the load, so that the blank is pressed against the die or punch under the action of liquid pressure. Dies for forming sheet metal parts. However, it can only be used for materials such as plates, and there is no better way to generally solve the processing problems of structural parts with curved surfaces and thin shells. Only machining methods can be used. [0003] 3D printing technology is currently a research hotspot, and it is widely used in the processing of metal forming parts. However, in the laser direct manufacturing o...

Claims

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Application Information

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IPC IPC(8): B22F3/105B22F3/24B33Y10/00B33Y50/00B33Y50/02
CPCB22F3/24B33Y10/00B33Y50/00B33Y50/02B22F2003/248B22F10/00B22F10/64B22F10/28B22F10/36B22F10/66B22F10/25B22F12/41B22F10/34B22F10/366B22F10/47B22F10/32Y02P10/25
Inventor 顾德阳
Owner 四川天塬增材制造材料有限公司
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