Electric-arc additive manufacturing repair method adopting auxiliary forming plate structure

A technology of additive manufacturing and repair methods, applied in the direction of manufacturing tools, additive processing, arc welding equipment, etc., can solve the problems of poor molding, low cost, low molding efficiency, etc., achieve important engineering application value, and have a wide range of applicable materials , Improve the effect of repair efficiency

Inactive Publication Date: 2019-04-02
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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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 solve the existing problems of high-quality electric arc additive manufacturing with large volume defects and regular-shaped parts, such as low efficiency, low linear energy density, and formation of forming metals that cannot be formed. Arc additive manufacturing repair method for plate structure
At the same time, the method has low cost, high efficiency, and is easy to implement and popularize. It solves the problems of low efficiency, poor forming accuracy and poor forming in the repair process of traditional arc additive manufacturing.

Method used

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  • Electric-arc additive manufacturing repair method adopting auxiliary forming plate structure
  • Electric-arc additive manufacturing repair method adopting auxiliary forming plate structure

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specific Embodiment approach 1

[0010] Specific implementation mode one: the following combination figure 1 , figure 2 To describe this embodiment, figure 1 Shown is a schematic diagram of the arc additive manufacturing repair auxiliary plate structure and method for the defect in the upper right part of the cuboid part according to an embodiment of the present invention, wherein 1 is the repair filling metal without using the auxiliary forming plate, 2 is the metal part to be repaired, and 3 is Restoration filler metal using auxiliary forming plates, 4 for auxiliary forming plates. Taking a simple part as an example, cracks, breakages, and defects occurred in the upper right corner of the cuboid part. The defect area in the upper right corner was mechanically removed to reveal the metallic luster. The additive manufacturing repair of the auxiliary forming board was not used to avoid the flow of liquid metal. , it is necessary to tilt the workpiece to be repaired to ensure that the position of the molten ...

specific Embodiment approach 2

[0012] Specific Embodiment 2: This embodiment is a further limitation of Embodiment 1. In this embodiment, the applicable materials for the base metal to be repaired include: steel, aluminum alloy, copper alloy or magnesium alloy and other large-volume defects and regular-shaped metals. Components.

specific Embodiment approach 3

[0013] Specific Embodiment 3: This embodiment is a further limitation of Embodiment 1. In this embodiment, according to the service performance requirements of the final repaired parts, the repair material can be selected using the principle of high-strength matching to improve the material strength of the repaired part. It can also be used The principle of equal-strength matching or low-strength matching is used to select repair filling materials to improve the plasticity and toughness of the repaired parts.

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Abstract

The invention provides an electric-arc additive manufacturing repair method adopting an auxiliary forming plate structure. The problems that in the existing electric-arc additive manufacturing repairprocess, especially, under the large-area defect additive manufacturing repair working condition, the situation that forming is poor due to the fact that metal flows and is insufficient in constraintoccurs in the open type multi-layer multi-pass stacking process are solved. In the electric-arc additive manufacturing repair process, metal inert gas arc welding (MIG), tungsten inert gas arc welding(TIG) and plasma welding electric arcs are adopted as a heat source, by adding wires, the defect portion is subjected layer-by-layer cladding repair, and under the control of a program, the defect portion of a metal part is gradually formed from line to surface to body according to a three-dimensional digital model. According to the electric-arc additive manufacturing repair method adopting the auxiliary forming plate structure, one or more auxiliary plate structures of which the material is the same as the parent metal are adopted, the auxiliary plate structures and a metal parent part forma repairable zone through spot welding, then, the repairable zone is completely welded through the multi-layer multi-pass stacking method, and finally, auxiliary plates are removed through the machining method.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing repair, and in particular relates to an arc additive manufacturing repair method using an auxiliary forming plate structure. Background technique [0002] The arc additive manufacturing technology uses the arc as the heat source and adopts layer-by-layer surfacing to manufacture metal solid components. Its forming speed is relatively high. It has the advantages of high strength, good toughness, and flexible size and shape design, and can efficiently and rapidly form large-scale and complex metal components. During the multiple stacking process, the parts undergo multiple heating processes to be fully hardened and tempered, eliminating the problems of difficult hardening, macro segregation, and performance anisotropy of large castings. Using the high-efficiency arc additive manufacturing method, the traditional "subtractive" method is changed to the "additive" method, which can not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B33Y10/00
CPCB23K9/04B33Y10/00
Inventor 赵慧慧尹玉环胡蓝许辉封小松董吉义夏佩云宋学成郭立杰
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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