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Device and method for laser real-time removal of surface oxide scale in additive manufacturing process of metal component

A technology of additive manufacturing and metal components, applied in the field of additive manufacturing, can solve problems that have not been seen yet, and achieve the effects of avoiding adverse effects, open working environment, and small footprint

Active Publication Date: 2019-11-12
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has been no report on the application of laser cleaning technology to the real-time removal of surface oxide skin in the process of additive manufacturing of metal components

Method used

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  • Device and method for laser real-time removal of surface oxide scale in additive manufacturing process of metal component
  • Device and method for laser real-time removal of surface oxide scale in additive manufacturing process of metal component
  • Device and method for laser real-time removal of surface oxide scale in additive manufacturing process of metal component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take wire-feeding TIG arc additive manufacturing of 2219 aluminum alloy large-scale components as an example, such as figure 1 As shown, the side blowing shielding gas and side wire feeding method are adopted, the feeding nozzle is the wire feeding nozzle, the additive deposition heat source is the welding machine, the additive deposition head is the welding gun, and the laser is the Nd:YAG laser, including the following steps:

[0040] Step 1: Remove the oxide scale and dirt on the surface of the 6061 substrate with a steel brush, and fix it; adjust the distance between the laser cleaning head 5 and the welding torch 1 and the distance between the laser cleaning head 5 and the additive deposition surface through the screw nut of the connection mechanism 13. Height; adjust the angle between the laser beam and the axis of the welding torch 1 through the knob of the connection mechanism 13; the laser cleaning head 5 is fixed in front of the moving direction of the welding...

Embodiment 2

[0045] Take powder-feeding laser additive manufacturing of TC4 titanium alloy large-scale components as an example, such as figure 2 As shown, the coaxial shielding gas and coaxial powder feeding method are adopted, the feeding nozzle is the powder feeding nozzle, the additive deposition heat source is a YLS4000 fiber laser, the additive deposition head is a laser welding head, and the laser is a Nd:YAG laser, including the following steps :

[0046] Step 1: Use a steel brush to remove the oxide scale and dirt on the surface of the TA0 substrate and fix it; adjust the distance between the laser cleaning head 5 and the laser welding head 1 and the laser cleaning head 5 and the additive deposition through the screw nut of the connecting mechanism 13 Adjust the angle between the laser beam and the axis of the welding torch 1 through the knob of the connecting mechanism 13; the laser cleaning head 5 is fixed in front of the moving direction of the laser welding head 1; turn on th...

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Abstract

The invention discloses a device and method for laser real-time removal of surface oxide scale in an additive manufacturing process of a metal component. The device comprises an additive manufacturingdevice, an additive deposition head, a laser cleaning device, a laser cleaning head and a connecting mechanism; the laser cleaning head is connected with the additive deposition head through the connecting mechanism; the laser cleaning head is fixed in front of the moving direction of the additive deposition head; when an additive is manufactured into the metal component, a feeding nozzle conveysmetal to the additive deposition head and the metal is molten and deposited to be shaped under the action of high heat; the laser cleaning head is connected with the laser through an optical fiber; and before the laser is irradiated on the deposition point through the laser cleaning head, the oxide scale on the formed surface is stripped or evaporated, and inert gas is sprayed out from a cleaninggas nozzle to take away the stripped oxide scale, so as to provide a good adhesion surface for subsequent deposition. The problem that the mechanical property of the component and the corrosion resistance are reduced since the oxide scale on the formed surface is molten into a new deposition layer in the additive manufacturing process of the metal component is solved.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and relates to a device and method for removing oxide scale on the surface of metal components in real-time by laser in the process of additive manufacturing. Background technique [0002] In recent years, metal additive manufacturing technology has been widely used in manufacturing. In the additive manufacturing of metal components, especially large-sized metal components, since the deposited parts cannot be adequately protected by the shielding gas, the residual high heat causes the deposited surface to form oxide scales. The oxide cortex is hard and brittle, and will melt into the deposit under the action of high heat and cause local cracks. The melting of oxygen into the component will produce oxide inclusions in the metal, reducing the strength, plasticity, corrosion resistance and impact toughness of the component; at the same time, oxygen segregates at the grain boundary to...

Claims

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Application Information

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IPC IPC(8): B22F3/105B23K26/36B33Y10/00B33Y30/00B33Y40/00
CPCB23K26/36B33Y10/00B33Y30/00B33Y40/00B22F10/00B22F10/36B22F10/25B22F12/46B22F12/70B22F12/22B22F10/50B22F10/322Y02P10/25
Inventor 吴东江张恒牛方勇崔强马广义
Owner DALIAN UNIV OF TECH
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