Welding tool for copper and copper alloy stirring friction welding

A technology of friction stir and copper alloy, applied in welding equipment, manufacturing tools, non-electric welding equipment, etc., can solve the problems of unfavorable welding tool structure size modification, waste of high melting point materials, and poor practicability of welding tools, so as to save high melting point materials , Reduce processing and manufacturing costs, and facilitate size modification

Inactive Publication Date: 2007-03-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problems of wasting high melting point materials in the existing welding tools for friction stir welding of materials with higher melting points, it is not conducive to

Method used

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  • Welding tool for copper and copper alloy stirring friction welding
  • Welding tool for copper and copper alloy stirring friction welding
  • Welding tool for copper and copper alloy stirring friction welding

Examples

Experimental program
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Example Embodiment

[0011] Specific embodiment 1: This embodiment is described with reference to FIGS. 1, 3, and 5. The welding tool of this embodiment has a split structure and is composed of a clamping body 1, a stirring head 2 and a screw 3. The clamping body 1 is composed of two left and right coaxial cylinders, and the diameter of the left cylinder 1-2 is smaller than the diameter of the right cylinder 1-3. The right cylinder 1-3 is provided with a cavity 1-1 into which the stirring head 2 is placed, and the upper and lower walls of the cavity 1-1 of the right cylinder 1-3 are provided with an axis perpendicular to the axis of the right cylinder 1-3. Threaded through holes 1-5, the stirring head 2 is a cylinder, and an outwardly protruding stirring needle 2-1 is provided in the middle of the right end of the stirring head 2, which is used for stirring and friction during welding. The left end of the stirring head 2 Insert it into the cavity 1-1, and screw the screw 3 into the threaded through ho...

Example Embodiment

[0012] Specific embodiment 2: This embodiment will be described with reference to Figures 3, 4, and 5. The top end of the left outer end surface of the stirring head 2 of this embodiment is provided with a platform 2-2 along the axial direction. The size of the platform 2-2 is It is determined according to the length of the stirring head 2 that needs to be exposed and the size of the cavity 1-1 where the holder 1 is placed in the stirring head 2, and the left end of the stirring head 2 where the platform 2-2 is located is placed in the hollow of the holder 1. In the cavity 1-1, the tail end of the screw 3 is in close contact with the platform 2-2 to avoid axial and circumferential movement between the stirring head 2 and the clamping body 1.

Example Embodiment

[0013] Specific embodiment 3: This embodiment will be described with reference to Figs. 1, 2 and 5. The top of the outer end surface of the left side cylinder 1-3 of the clamping body 1 of the welding tool of this embodiment is provided with a platform 1 along the axial direction. 6. It is used for fixing the clamping body 1 on the running machine.

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Abstract

The invention relates to a welding device used to mixing and welding copper and copper alloy. Wherein, it is separated structure, which is formed by clamper (1), mixing head (2) and screw (3); the clamper is formed by left and right coaxial cylinders; the diameter of left cylinder (1-2) is smaller than the right one (1-3); the right cylinder has chamber (1-1) for arranging mixing head; the upper and lower walls of chamber of right cylinder has screw through hole (1-5) vertical to the axis of right cylinder; the mixing head is cylinder while the middle of its right end has protruded mixing needle (2-1); the right of mixing head is inserted into the chamber; the screw is screwed into the screw through hole; and the mixing head is fixed inside the clamper. The invention can save high-fusion material and reduce cost.

Description

technical field [0001] The invention relates to a welding tool for welding higher melting point materials. Background technique [0002] Various welding tools are currently used in the friction stir welding process for materials with higher melting points, but they all have some shortcomings. [0003] The basic principle of friction stir welding is as described in the patent US5460317. During the friction stir welding process, the heat generated by the friction between the high-speed rotating stirring head and the workpiece is used to locally plasticize the welded material. When the stirring head moves forward along the welding interface , The plasticized material moves from the front of the stirring head to the rear under the rotating friction of the stirring head, and forms a dense solid-phase weld under the extrusion of the stirring head. At present, friction stir welding is mainly successfully applied to the connection of low melting point materials such as aluminum and...

Claims

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Application Information

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IPC IPC(8): B23K20/12B23K20/22
Inventor 刘会杰周利李远星
Owner HARBIN INST OF TECH
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