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A Surface Damage Repair Device for Lightweight and High-Strength Parts Based on Friction Stir Method

A technology of friction stir and damage repair, which is applied in the direction of metal processing equipment, welding equipment, manufacturing tools, etc., can solve problems such as thermal cracks, shrinkage cavities, and no obvious repair effect, so as to increase the area, avoid the keyhole treatment process, The effect of improving surface quality

Active Publication Date: 2021-07-30
HEFEI WISDOM DRAGON MACHINERY DESIGN CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current damage repair methods mainly include traditional fusion welding, EDM alloying, laser multi-layer cladding, etc. These repair methods are based on the repair process of material melting. Excessive local heat input is likely to cause secondary defects such as thermal cracks and shrinkage cavities; in addition, EDM and laser multilayer cladding are only suitable for repairing surface damage, and internal defects such as cracks at a certain depth on the surface of parts No obvious repair effect

Method used

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  • A Surface Damage Repair Device for Lightweight and High-Strength Parts Based on Friction Stir Method
  • A Surface Damage Repair Device for Lightweight and High-Strength Parts Based on Friction Stir Method
  • A Surface Damage Repair Device for Lightweight and High-Strength Parts Based on Friction Stir Method

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specific Embodiment

[0027] A device for repairing surface damage of lightweight and high-strength parts based on friction stir method, such as figure 1 , 2 As shown, it includes an L-shaped support 18, a first feed mechanism 1, a workbench 3, a clamping member 2, a second feed mechanism 4, a third feed mechanism 5, a motor, a friction stirring keyhole removal mechanism 17 and a joint Shaft device 16. The L-shaped bracket 18 includes a connected vertical plate and a horizontal plate, and the vertical plate is fixedly connected to the first feeding mechanism 1 by bolts, and the horizontal plate is fixedly connected to the second feeding mechanism 4 by bolts. Described first feeding mechanism 1 comprises the screw mandrel that is fixedly arranged on the vertical plate of support 18, and described screw mandrel is socketed with the axle sleeve of guide rail, and lead screw is connected with motor by shaft coupling, and described axle sleeve and stirring The protective shell of the friction keyhole ...

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Abstract

The invention relates to a device for repairing surface damage of lightweight high-strength parts based on a friction stir method, belonging to the technical field of working surface strengthening and damage repairing devices for light-weight and high-strength parts, including an L-shaped bracket whose vertical plate is fixedly connected with a first feeding mechanism , the stirring friction keyhole removal mechanism is set on the vertical plate through the first feeding mechanism; the horizontal plate is provided with the second feeding mechanism, platform, third feeding mechanism, workbench and clamping parts sequentially from bottom to top; stirring The friction keyhole removal mechanism includes a connecting piece connected to the motor and a stirring shoulder fixed at the lower end of the connecting piece. The middle part of the lower end of the connecting piece is connected with a hydraulic cylinder, a rotating device and a stirring needle in turn. The stirring shoulder is provided with a circular hole through which the stirring needle passes. The stirring needle is separated from the stirring shoulder through the expansion and contraction of the hydraulic cylinder. The invention has an obvious effect on repairing internal defects such as cracks of a certain depth on the surface of light and high-strength parts, has a large repair area and high efficiency, and there is no keyhole on the surface of the repaired part, thereby avoiding the keyhole treatment process.

Description

technical field [0001] The invention relates to a device for repairing surface layer damage of lightweight high-strength parts based on a friction stirring method, and belongs to the technical field of working surface strengthening and damage repairing devices for light-weight and high-strength parts. Background technique [0002] With the rapid development of the automotive industry and the aerospace industry, the demand for lightweight and high-strength metal parts is increasing. Magnesium and aluminum alloys have been widely used due to their low density, high strength, and high toughness. Under severe cyclical working load conditions, the working surface and surface layer of aluminum and magnesium alloy parts will inevitably initiate fatigue cracks and surface defects such as peeling damage, so it is necessary to repair the surface damage of parts. The current damage repair methods mainly include traditional fusion welding, EDM alloying, laser multi-layer cladding, etc. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/12
CPCB23K20/122B23K20/1245B23K20/125
Inventor 董永刚赵滨黄鑫磊敖金磊张晋府张京城董文杰尚虎城
Owner HEFEI WISDOM DRAGON MACHINERY DESIGN CO LTD
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