Non-gas metal arc welding 3 D adding material repair device and repair method

A gas shielded welding and non-melting electrode technology, applied in the field of additive repair, can solve problems such as insufficient bonding strength of the coating and its own strength, unsatisfactory repair effect, stress concentration in the transition zone, etc., to improve the welding effect and improve the welding efficiency , Reduce the effect of lack of welding

Inactive Publication Date: 2016-11-23
GUANGDONG UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0003] The above repair methods have certain limitations, among which laser cladding technology will lead to stress concentration in the transition zone; electroplating technology has the problem of insufficient coating bonding strength and its own strength; the heat-affected zone of arc surfacing technology and thermal spraying technology Large, easy to cause workpiece deformation
In addition, the above-mentioned repairing technology fails to accurately obtain the defect contour parameters before repairing, resulting in certain defects in the repaired workpiece, and the repairing effect is not ideal

Method used

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  • Non-gas metal arc welding 3 D adding material repair device and repair method

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Embodiment 1

[0051] Non-melting electrode gas shielded welding is a kind of arc welding that uses pure tungsten or non-activated tungsten as non-melting electrode and inert gas (CO2, Ar) as shielding gas. The invention discloses a repairing device and a repairing method for solving the deficiencies in the prior art.

[0052] Among them, such as figure 1 As shown in the figure, the repairing device is a 3D additive repairing device for NGAW, and the repairing device mainly includes a controller 100, a four-axis linkage platform located above the repaired workpiece, and a linkage platform arranged on the linkage platform for obtaining the workpiece The laser vision sensor 300 for the three-dimensional information of the defect contour, the infrared vision sensor 400 for obtaining the state information of the molten pool 6, the fixture 520, the non-melting electrode torch 510, the wire feeding unit and the wire reel. The controller 100 is connected with the four-axis linkage platform, the la...

Embodiment 2

[0074] like figure 1 As shown, the laser vision sensor 300 and the near-infrared vision sensor 400 are installed on the Z-axis motion platform of the four-axis (X-Y-Z-A axis) motion control platform, and the non-melting electrode shielding gas welding torch 510 is installed on the A-axis rotating platform. The device can be installed on the end of the robot or on the gantry frame, and cooperate with the movement of the robot or the gantry to the corresponding position to repair defective specimens or equipment in different occasions.

[0075] The working process of the 3D additive repairing device provided by the present invention is as follows: first, the non-melting electrode welding torch 510 is moved to the corresponding position with the four-axis motion platform, and under the control of the computer controller 100, the laser vision sensor 300 is driven to scan for defects (complex Geometric shape) profile to get structured light signal.

[0076] Then, the semiconductor...

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Abstract

The invention discloses a non-gas metal arc welding 3 D adding material repair device and repair method. The repair device comprises a controller, a four-axis linkage platform, a laser vision sensor, an infrared vision sensor, a clamp, a non-metal arc welding torch, a wire feeding unit and a welding wire disc. The repair method comprises the steps that a defective workpiece is installed on a repair workbench; the laser vision sensor is driven to scan a defective three-dimensional outline; the controller rebuilds the defective three-dimensional outline; specific welding parameters are determined; the controller drives the infrared vision sensor to scan a molten pool, time-frequency parameters of a molten pool image are obtained, a compensation control code is generated according to the time-frequency parameters of the molten pool image, and the set welding parameters are corrected in real time; and after repair, the laser vision sensor is driven again to scan the defective three-dimensional outline, whether the repaired workpiece reaches the standard is determined, and if not, defects are repaired again till defect repair reaches the standard. The repair device is simple in structure, convenient to operate and high in reliability and adaptability.

Description

technical field [0001] The invention relates to the technical field of additive repair, in particular to a 3D additive repair device for non-melting gas shielded welding and a repair method thereof. Background technique [0002] The existing additive repair methods mainly include laser cladding, arc surfacing, electroplating, thermal spraying, etc. Laser cladding technology is a method of using a high-energy-density laser beam to fuse with a thin layer on the surface of the substrate to form an additive cladding layer that is metallurgically combined with it on the surface of the substrate. Arc surfacing is the use of electrodes or electrodes deposited on the surface of the substrate for surfacing. Electroplating technology is the use of direct current through the electrolyte to produce electrochemical reactions to achieve metal deposition on the surface of the plated parts. Thermal spraying is a technology that uses a certain heat source to heat powder or filamentary meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B23K9/16B23K9/12B23K9/127B23K9/133
CPCB23K9/044B23K9/12B23K9/1274B23K9/133B23K9/167
Inventor 高向东蓝重洲
Owner GUANGDONG UNIV OF TECH
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