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Friction stirring joining method and device

A technology of friction stir and joining method, which is applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., and can solve the problems affecting the appearance

Inactive Publication Date: 2003-10-29
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, if the surface is not painted after friction stir welding, the welded part will remain discolored and affect the appearance

Method used

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  • Friction stirring joining method and device
  • Friction stirring joining method and device
  • Friction stirring joining method and device

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Embodiment Construction

[0022] According to an embodiment of the present invention Figure 1 to Figure 10 Be explained. However, the technical scope of the method of the present invention is not limited to the numerical values ​​of the embodiments and examples described below, but is a range that can be easily implemented by a person having general knowledge in the technical field based on this description.

[0023] The two plate-shaped components 10 , 20 are placed on the stand 25 and the edges of the components 10 , 20 are brought into abutment against one another. Fix the parts in this state. There are many cases where a gap occurs at the butt joint. Protrusions 12 , 22 are respectively provided on the members 10 , 20 on the upper surface sides of the facing portions of the two members 10 , 20 . In addition, a protruding piece 23 protruding toward the lower surface side of the mating portion of the member 10 is provided on the lower side of the mating portion of the member 20 .

[0024] In ord...

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Abstract

Two members 10 and 20 are welded together by cutting a groove 41 having a determined cross-sectional shape using a cutting tool 60 along the abutted portion between the two members 10 and 20, inserting a filler member 30 substantially having the same cross-sectional shape to the groove so as to substantially eliminate the gap at the abutted portion, temporarily welding together the projections 12, 22 and the filler member 30, and thereafter, friction stir welding the members 10, 20 and the filler member 30 together completely using a rotary tool 81.

Description

technical field [0001] The invention relates to a friction stir welding method and device, and relates to a railway vehicle, in particular to a joining processing method suitable for vehicle body manufacture. Background technique [0002] The friction stir welding method is a method in which the parts are relatively moved while rotating a tool inserted into the joining part of the part, and the parts in the area close to the tool are subjected to plastic flow to join the parts in a solid state. [0003] In this case, the clearance between the mating parts is important. When the gap is too large, it cannot be joined well. When the length is about 20 m and the width is 3 m, like the body of a railway vehicle, manufacturing errors of components tend to be large, and gaps tend to be too large. [0004] In Japanese Patent Application Laid-Open No. 2000-233285 , friction stir welding is performed by disposing a filler material in the gap between butted portions of two members to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/24B23K20/26
CPCB23K20/123B23K20/1245B23K20/128B23K20/24B23K20/12
Inventor 石田良二福寄一成冈田智仙
Owner HITACHI LTD