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Manufacturing method and device for composite friction stirring near-net forming additional material

A friction stir, near-net-shape technology, applied in manufacturing tools, non-electric welding equipment, welding equipment, etc., can solve the problems of high clamping requirements, long processing time, complicated disassembly and assembly, etc. Material efficiency and simple device structure

Active Publication Date: 2017-11-24
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a manufacturing method and device for friction stir near-net shape additive of composite materials, so as to solve the problem of high workpiece clamping requirements, complicated disassembly and assembly, and time-consuming follow-up processing in friction stir additive manufacturing in the prior art. Longer problem, the device of the present invention can realize near-net-shape additive manufacturing of composite materials in solid state, the device is simple, easy to operate, high material utilization rate, and has no defects such as pores produced by the melting method

Method used

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  • Manufacturing method and device for composite friction stirring near-net forming additional material
  • Manufacturing method and device for composite friction stirring near-net forming additional material
  • Manufacturing method and device for composite friction stirring near-net forming additional material

Examples

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Embodiment 1

[0032] Such as Figure 1-3 As shown, this embodiment describes in detail a manufacturing method and device for friction stir near-net shape additive of composite materials according to the present invention.

[0033] Such as figure 1 and 2 As shown, this embodiment provides a device for friction stir near-net shape additive of composite materials, including a mold base 2, a cavity plate and a cover plate 1, and end stops are installed at both ends of the mold base 2 Plate 3, a pad 8 is placed in the cavity of the mold base 2, and the two ends of the pad 8 are against the end baffle 3, and the side of the pad 8 is equipped with a side baffle 9, and the side baffle 9 and the two A terminal baffle can better stabilize the cushion block 8. A cavity plate is arranged on the top of the cushion block 8. The cavity plate is arranged as a left and right split and a rectangular gap is reserved in the middle. The cover plate 1 is connected to the upper part of the mold base 2. There i...

Embodiment 2

[0045] Embodiment 2, in step 2, the width of the plug 6 is 9mm ± 0.01, the material thickness is 4mm, the rotation speed is 600rpm, the welding speed is 45mm / min, the inclination angle of the stirring head is 2°, and the stirring needle is stirred at least 5 times; other steps and embodiments same.

Embodiment 3

[0046] Embodiment 3, in step 2, the width of the plug 6 is 10.5±0.01mm, the material thickness is 4mm, the rotation speed is 750rpm, the welding speed is 30mm / min, the inclination angle of the stirring head is 2°, and the stirring needle is stirred at least 5 times; other steps and implementation Example is the same.

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Abstract

The invention discloses a manufacturing method and device for a composite friction stirring near-net forming additional material. The device comprises a mold base, cavity plates and a cover plate. End baffles are mounted at the two ends of the mold base. A cushion block is put in a cavity of the mold base, and the two ends of the cushion block abut against the end baffles. A lateral baffle is mounted on the side face of the cushion block. The cavity plates are arranged on the upper portion of the cushion block. Each cavity plate is arranged in a left-and-right split manner, and a rectangular clearance is reserved in the middle of each cavity plate. The cover plate is connected with the upper portion of the mold base, and a rectangular groove hole is formed in the middle of the cover plate. In the additional material manufacturing process, the cavity plates are additionally mounted, and therefore continuous and efficient operation of adding a to-be-stirred material in the composite additional material manufacturing process is achieved, and the device can achieve manufacturing of the composite near-net forming additional material in a solid state. The device is simple, easy and convenient to operate and high in material utilization rate, and the defects such as air holes generated by a fusion method are avoided.

Description

technical field [0001] The invention relates to the technical field of friction stir additive manufacturing, in particular to a manufacturing method and device for friction stir near-net shape additive of composite materials. Background technique [0002] Friction stir processing technology is based on the idea of ​​friction stir welding, which uses the severe plastic deformation, mixing and crushing of materials in the processing area caused by the stirring head to realize the refinement, homogenization and densification of the material microstructure. Its operation mode is: the stirring tool composed of the shoulder and the stirring pin rotates at high speed, insert the stirring pin into the workpiece, when the shoulder is in contact with the surface of the workpiece, the stirring tool moves along the predetermined direction on the workpiece, the rotating shoulder and the surface of the workpiece Friction heats and softens the metal locally, and the metal around the stirri...

Claims

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Application Information

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IPC IPC(8): B23K20/12
CPCB23K20/12
Inventor 汪樟锋黄春平吴本强吴志林黄硕文张鹏张璟阳
Owner NANCHANG HANGKONG UNIVERSITY
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