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A laser near-net shape method for functionally gradient friction stir welding stirring head

A technology of near-net laser forming and friction stir welding, which is applied in the field of functionally graded materials, laser processing technology, and friction stir welding, and can solve the problems of easy wear, low fracture toughness of polycrystalline cubic boron nitride materials, and tungsten-based material manufacturing. Problems such as high cost can achieve the effect of increasing the service life, expanding the scope of use, and improving the overall fracture toughness

Active Publication Date: 2021-05-18
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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Problems solved by technology

[0006] The purpose of the present invention is to provide a functional gradient friction stir welding stirring head laser near-net forming method to solve the problems of easy wear of the stirring needle and shaft shoulder of the stirring head, high manufacturing cost of tungsten-based materials, and fracture toughness of polycrystalline cubic boron nitride materials. low level problem

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  • A laser near-net shape method for functionally gradient friction stir welding stirring head
  • A laser near-net shape method for functionally gradient friction stir welding stirring head
  • A laser near-net shape method for functionally gradient friction stir welding stirring head

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Embodiment Construction

[0019] The preparation method of the functionally gradient friction stir welding stirring head proposed by the present invention will be further clearly described below in conjunction with the accompanying drawings and specific examples. Advantages and features of the present invention will be apparent from the following description and claims.

[0020] The core idea of ​​the present invention is that the functional gradient friction stir welding stirring head laser near-net forming method provided by the present invention can realize the material of the stirring head from the material with good toughness, high strength and good economy in the main part of the stirring head to the material of the stirring head The material with good high temperature and wear resistance on the end face of the shaft shoulder and the surface of the stirring needle can realize the composition gradient transition, and then realize the performance gradient transition.

[0021] The present invention ...

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Abstract

The invention provides a method for preparing a stirring head of functional gradient friction stir welding, which includes: using high-temperature wear-resistant materials at the friction position with the workpiece, that is, the stirring pin and the shaft shoulder surface; Materials with good toughness, high strength, and good economy, and finally adopt the laser near-net shape method to realize the gradient transition of the two materials and the near-net shape of the stirring head. The present invention provides a functional gradient friction stir welding stirring head laser near-net forming method, which can realize that the stirring needle and the shaft shoulder that are in direct contact with the metal during the working of the stirring head have better high temperature wear resistance, and the overall stirring head has excellent Excellent toughness, high strength and good economy. Compared with the traditional tool steel and mold steel, the present invention expands the scope of use of the stirring tool and prolongs the service life. Compared with the tungsten-based stirring head and the polycrystalline cubic boron nitride stirring head, the present invention greatly improves the overall fracture toughness and manufacturing efficiency of the stirring head. economy.

Description

technical field [0001] The invention relates to the technical field of laser processing, the field of friction stir welding, and the field of functionally graded materials, in particular to a laser near-net forming method for a stirring head of functionally graded friction stir welding. Background technique [0002] Laser near-net-shaping technology is a kind of additive manufacturing. It is a new advanced manufacturing technology that integrates computer technology, laser technology, sensor technology and material solidification, and is affected by many factors. It is suitable for metals and ceramics. Forming of various materials. This technology uses 3D modeling software to build a solid model of the part and slice it layer by layer to generate a motion trajectory, and uses a high-energy laser beam to form a molten pool on the surface of the metal or ceramic. The powder is transported into the molten pool by an inert gas, and forms a cladding under the action of the laser....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10B23K26/00B23K20/12
CPCB23K20/122B23K26/00
Inventor 郝云波赵凯董吉义赵维刚杨洋黄征
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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