Laser melting deposition and laser shock strengthening combined manufacturing device and method
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A technology of laser shock strengthening and fused deposition, which is applied in the field of additive manufacturing to achieve the effects of wide application range, thermal stress elimination, and microstructure
Pending Publication Date: 2020-02-18
西安空天机电智能制造有限公司
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[0004] In view of the defects and deficiencies in the prior art, the object of the present invention is to provide a laser fusion deposition and laser shock strengthening composite manufacturing device and method, in which the continuous forming laser and the short pulse strengthening laser work together to implement " "Impact forging" and "impact stress relief", while solving the problem of thermal stress in the laser melting deposition process, it can also overcome the problem of composite manufacturing of complex curved surface parts
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[0028] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention Any modification of the structure, change of the proportional relationship or adjustment of the size shall still fall within the scope of the technical content disclosed in the present invention without affecting the effect and the purpose of the present invention. within the scope covered.
[0029] Also, it is to be understood that the terms "central", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", " The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only...
Embodiment 1
[0033] Such as figure 1 As shown, a laser fusion deposition and laser shock strengthening composite manufacturing device includes a fusion deposition system connected by wires, an impact strengthening system and an online monitoring system,
[0034] The fusion deposition system includes a fusion laser 1, an optical path assembly 2, a powder feeder 3, a fusion deposition head 5 and a three-dimensional processing platform 9, the fusion deposition head 5 is arranged above the three-dimensional processing platform 9, and the fusion laser 1. The emitted laser beam is guided by the optical path assembly 2 and passes through the fusion deposition head 5 to the three-dimensional processing platform 9 to form a laser spot; the powder feeder 3 passes through the pipeline and the fusion deposition head 5 connection; after the laser beam emitted by the fusion laser 1 is reflected by the optical path assembly 2, the laser beam is guided to the laser beam channel of the fusion deposition he...
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Abstract
The invention provides a laser melting deposition and laser shock strengthening combined manufacturing device. The device comprises a melting deposition system, a shock strengthening system and an online monitoring system which are connected by leads; the melting deposition system includes a melting laser device, a laser path assembly, a powder feeder, a melting deposition head and a three-dimensional processing platform; after being guided by the laser path assembly, a laser beam emitted from the melting laser device passes through the melting deposition head and reaches the three-dimensionalprocessing platform to form a laser spot; the shock strengthening system includes a shock strengthening laser device and a laser guide assembly; and the online monitoring system includes an online monitoring sensor and an information collection control system which are connected by leads. The combined manufacturing device can further overcome the problem of combined manufacturing of complex curved surface parts while solving the thermal stress problem in the process of laser melting deposition, and in addition, laser shock control is employed, the combined manufacturing device has the advantages of fast response, no contact, high controllability and the like.
Description
technical field [0001] The invention belongs to the field of additive manufacturing, and in particular relates to a laser melting deposition and laser shock strengthening composite manufacturing device and method. Background technique [0002] Laser melting deposition (laser melting deposition, LMD) is mainly based on the technical principle of "discrete-stacking", using alloy powder as raw material, feeding the powder coaxially / paraaxially, and forming deposition through laser melting and rapid solidification. Through laser point-by-point scanning, line-by-line lapping, and layer-by-layer melting and solidification accumulation, the "near-net shape" (additive manufacturing) of three-dimensional complex parts is realized. It has the advantages of no mold, short cycle, low cost, high flexibility, and fast response. . However, the physical process of the laser fusion deposition process is very complex, and it is difficult to effectively control the thermal stress and internal...
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