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Friction stirring welding method

A friction stir welding and panel technology, applied in welding equipment, welding/welding/cutting items, non-electric welding equipment, etc., which can solve the problems of stepped height difference, smaller spacing, and increased installation cost.

Inactive Publication Date: 2004-05-12
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in order to eliminate the above-mentioned step-like height difference, it is necessary to reduce the pitch of the fittings for pressing down the metal, thus increasing the cost of the device.
Moreover, when friction stir welding is performed after temporarily fixing welding, it is necessary to remove the above-mentioned step-like height difference, which is also a problem.
There is a stepped height difference during welding and it is impossible to eliminate it after welding

Method used

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Embodiment Construction

[0023] see below Figure 1~6 An embodiment of a structural member of the present invention and its manufacturing method are described. figure 1 yes Figure 4 A magnified view of the docking site, figure 2 is shown in figure 1 An enlarged view of the butt joint of , showing the condition of the butt joint of the extruded framing members before butt joint, image 3 Shown after docking. Figure 4 yes Figure 5 A zoomed-in view of the main parts of the . Figure 5 yes Image 6 A longitudinal section view of a side member of .

[0024] The vehicle body 200 is composed of a side member 201 constituting the side of the vehicle body 200 itself, a top member 202 constituting the top of the vehicle body 200, a base frame 203 constituting the floor of the vehicle body 200, and a side member 204 constituting the longitudinal ends of the vehicle body 200. composition. The above-mentioned side members 201 , top members 202 and base frame 203 are respectively formed by connecting a...

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Abstract

Abutted portion of face plates 12b and 22b of frame members 10 and 20 are friction stir welded. With the abutting, a projecting portion 20c of an end portion of the face plate 20b of the frame member 20 is inserted into a recessed portion 12c of an end portion of the face plate 12b of the frame member 10. By this engagement, the outer faces on one face side of the face plates 12b and 20b form a smooth surface, so that at the joined edges there is no step. Next, a rotary tool 250 is inserted into the gas between the abutted plates from the side of the raised portions 16 and 26 side of the face plates 12b and 20b, while the other faces 12bc and 20bc of the face plates 12b and 20b, are supported flatly on a bed during the friction stir welding. Accordingly, the welding of the engaged plates can be carried out without any step-wise difference.

Description

[0001] This application is a divisional application of the invention patent application with the application number "00128667.6", the application date "September 20, 2000", and the invention title "rotational friction welding method". technical field [0002] The present invention relates to a method of friction stir welding. For example, the present invention is applicable to a friction stir welding method of long frame members made of aluminum alloy for railway vehicles or building structures. Background technique [0003] Friction stir welding is a process in which friction stir welding is heated and softened by rotating a round rod (called a "rotary tool") inserted into the joint and moving the rotating tool along the connecting line of elongated frame members. and plastic fluidization, and are firmly connected together in the solid state. The above-mentioned rotary tool is composed of a small-diameter portion inserted into the friction stir welding portion and a large-d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61D17/00B23K20/12B23K33/00B23K103/10
CPCB23K33/00B23K2201/045B23K20/122B23K2101/045Y10T428/12B23K20/12
Inventor 江角昌邦福寄一成稻佳彦松永彻也
Owner HITACHI LTD