Self-adaptive variable molten bath laser additive material manufacturing technology

A laser additive and manufacturing process technology, applied in the direction of additive processing, additive manufacturing, process efficiency improvement, etc., can solve problems such as difficult to achieve, and achieve the effect of easy real-time control, less process parameter variables, and fast response

Active Publication Date: 2017-09-15
安徽煜宸激光技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of powder feeding volume, the powder transmission distance from the powder feeder to the laser cladding head is at least 5 meters. It will be difficult to increase or decrease the powder feeding volume in real time as the laser spot size changes.

Method used

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  • Self-adaptive variable molten bath laser additive material manufacturing technology
  • Self-adaptive variable molten bath laser additive material manufacturing technology

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Taking the laser additive manufacturing of superalloy GH150 turbine blades as an example, the process plan of adaptive variable molten pool laser additive manufacturing is explained:

[0035] During the laser melting test, the process parameters used are: the scanning speed is 4mm / s, the defocus is 5mm, the spot diameter is 3mm, and the argon gas flow rate is 11L / min. By changing the laser power, the superalloy GH150 Process database of laser power and molten pool size;

[0036] The laser cladding powder is superalloy GH150 spherical powder with a particle size of 75-150 μm. Before cladding, the superalloy GH150 spherical powder must be dried under vacuum conditions at about 120 ° C to remove the moisture adsorbed in the powder;

[0037] LDM8060 laser processing system consists of YLS-6000 fiber laser, TWIN PF 2 / 2-MF powder feeding system, three-axis linkage CNC workbench, side powder feeding nozzle and argon gas protection box, etc. The thickness of each cladding layer...

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Abstract

The invention relates to the technical field of laser machining, in particular to a self-adaptive variable molten bath laser additive material manufacturing technology. The technology comprises the following steps that by means of laser fusing tests, laser powers are adjusted, molten bath widths corresponding to the different laser powers are recorded, and thus a technology database corresponding to molten bath sizes when the different laser powers are different is constructed; and a part three-dimensional model is set up, layering software carries out layering processing on the part three-dimensional model, and plane outline machining information on each layer of a part is obtained. By adjusting the level of the laser powers in real time, the continuous change of the size of a molten bath is achieved, thus, the molten bath can adapt to the change of the wall thickness of the thin-wall part, a variable width molten way is directly formed through one-time scanning instead of multi-pass lap joint, then the variable thickness thin-wall part is formed through layer-by-layer overlapping, and the technology has the beneficial effects that the technological parameter variable is small, response is fast, and the forming efficiency is high.

Description

technical field [0001] The invention relates to the technical field of laser processing, in particular to an adaptive variable melting pool laser additive manufacturing process. Background technique [0002] Laser additive manufacturing technology is an advanced manufacturing technology that combines rapid prototyping technology (RP technology) and laser cladding technology. It can realize the direct forming of complex parts and has the characteristics of good processing flexibility, short cycle and fast market response. Aerospace, automotive, medical and petrochemical industries have important application prospects. [0003] At present, for some thin-walled parts with variable thickness, such as turbine blades of aero-engines, when laser additive manufacturing is used, the outline of each layer is formed by multi-pass overlapping according to the planned scanning path, and then processed by layer-by-layer stacking. Produce thin-walled parts with a certain height. The plan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y50/00
CPCB33Y50/00B22F10/00B22F10/25B22F10/36B22F10/38B22F10/322B22F10/80Y02P10/25
Inventor 葛茂忠范真杨晓红朱福先杨超卢雅琳杨林吉庭婷杨刚
Owner 安徽煜宸激光技术有限公司
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