Method for manufacturing monocrystalline and directional solidified part through laser 3D printer

A 3D printing, directional solidification technology, applied in the field of material processing, can solve the problems of complex process, easy to produce casting defects, complex models and core shapes, etc.

Inactive Publication Date: 2015-12-02
HANGXING LIHUA BEIJING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problems existing in the prior art, that is, to use laser metal additive manufacturing (laser 3D printing) technology to gradually replace the current blades for casting (the casting method requires complex models and core shapes, the process is complicated, the structure is coarse, and it is easy to produce casting blades. Defects and other issues), can obtain high-quality single crystal turbine blades

Method used

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  • Method for manufacturing monocrystalline and directional solidified part through laser 3D printer
  • Method for manufacturing monocrystalline and directional solidified part through laser 3D printer
  • Method for manufacturing monocrystalline and directional solidified part through laser 3D printer

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Embodiment 1

[0019] A method for preparing single crystal and directionally solidified parts by laser 3D printing. In this example, DD6 is selected as the base material, FGH96 is selected as the powder, and the printing is carried out by powder spreading and selective sintering. Before printing, 3D modeling is carried out on the blade. Determine the printing path, and then input the data to the processing machine. After printing, post-processing and inspection loading.

Embodiment 2

[0021] A method for preparing single crystal and directional solidified parts by laser 3D printing. In this embodiment, the base material is nickel-based superalloy directional solidification base material, and the powder is FGH96. Metal laser 3D printing is carried out on the preferred crystal direction, and the parts are completed according to the drawings. preparation. Perform post-processing on the parts, then test run, install and run.

Embodiment 3

[0023] A method for laser 3D printing to prepare single crystal and directionally solidified parts. In this embodiment, the substrate is nickel-based superalloy directional solidification or single crystal substrate, and the powder is Inconel718. The supporting structure and placement position are reasonably designed to obtain perfect orientation Solidified or single crystal blade parts.

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Abstract

The invention discloses a method for manufacturing a monocrystalline and directional solidified part through a laser 3D printer. The powder laying laser additive manufacturing technology is adopted in the method, the relative growth speed along the front crystal orientation of a solidification interface of a laser molten pool is calculated, and a complete directional solidified or monocrystalline part with local signal orientation can be obtained through finely controlling a process. The laser is an optical fiber laser (wavelength: 1.07 [mu]m). The size and the structure of the part accord with the design requirement. The method can be used for manufacturing a metal printed part having a qualified shape, material is saved, and the shaping efficiency of metalwork can be greatly raised.

Description

technical field [0001] The invention belongs to the technical field of material processing, in particular to a method for preparing single crystal and directional solidified parts by laser 3D printing. Background technique [0002] The development of directional solidification technology is the process in which people most seek higher temperature gradients and solidification speeds. From the initial exothermic agent method, power reduction method, to liquid metal cooling method and rapid solidification method, the current new directional solidification technologies include zone smelting liquid metal cooling method, deep subcooling directional solidification, electromagnetic confinement directional solidification and laser superhigh Gradient directional solidification technique. The preparation of single crystal is mainly the crystal selection method and the seed crystal method. Both methods obtain parts such as blades that meet the requirements by controlling the grain gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F5/04C30B11/00C30B29/52B33Y10/00
CPCY02P10/25
Inventor 冯莉萍张国伟王健
Owner HANGXING LIHUA BEIJING TECH CO LTD
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