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Gas metal arc welding 3D material increase repair device and repair method

A melting gas and melting electrode welding technology, applied in the field of additive repair, can solve the problems of 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 missing solder

Inactive Publication Date: 2016-11-16
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Gas metal arc welding 3D material increase repair device and repair method

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Embodiment 1

[0053] MIG welding is a kind of melting electrode that uses welding wire. When inert gas (Ar or Ar+He) is used as the shielding gas, it is called MIG welding, or MIG welding for short; and when the shielding gas is mainly Ar , adding a small amount of active gas (O 2 or CO 2 ), it is called active gas shielded arc welding, or MAG welding for short. The invention discloses a repairing device and a repairing method thereof to solve the deficiencies in the prior art.

[0054] Among them, such as figure 1 As shown, the repair device is a 3D additive repair device for gas metal arc welding, which mainly includes a controller 100, a four-axis linkage platform located above the repair station, and a defect contour set on the linkage platform to obtain the workpiece A laser vision sensor 300 for three-dimensional information, an infrared vision sensor 400 for obtaining molten pool state information, a clamp 520 and a melting electrode welding torch 510 . The controller 100 is conn...

Embodiment 2

[0076] Such as 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 MIG welding torch 510 is installed on the A-axis rotation 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 gantry to the corresponding position to repair defective test pieces or equipment in different occasions.

[0077] The working process of the 3D additive repairing device provided by the present invention is as follows: first, the 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 defects (complex geometry shape) profile to obtain the structured light signal.

[0078] Then, the semiconductor laser emission source in the las...

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Abstract

The invention discloses a gas metal arc welding 3D material increase repair device and a repair method. The device comprises a controller, a four-axis linkage platform, a laser vision sensor, an infrared vision sensor, a clamp and a melting electrode welding torch. The repair method comprises the following steps: mounting a defective workpiece on a repair working table; driving the laser vision sensor to scan a three-dimensional outline of a defect; reestablishing the three-dimensional outline of the defect by using the controller; determining specific welding parameters; driving the near infrared vision sensor to scan a molten pool by using the controller to obtain a time-frequency parameter of an image of the molten pool, generating a compensation control code according to the time-frequency parameter of the image of the molten pool, and correcting the set welding parameters in real time; and after repair is finished, driving the laser vision sensor again to scan the three-dimensional outline of the defect, judging whether the repaired workpiece reaches the standard or not, and if the repaired workpiece does not reach the standard, repairing the defect again until repair of the defect reaches the standard. The gas metal arc welding 3D material increase repair device is simple in structure, convenient to operate, high in reliability and high in adaptability.

Description

technical field [0001] The invention relates to the technical field of additive repairing, in particular to a 3D additive repairing device and a repairing method for gas metal arc welding. Background technique [0002] The existing additive repair methods mainly include laser cladding, arc surfacing, electroplating, thermal spraying technology, etc. Laser cladding technology is a method of using a high-energy-density laser beam to fuse it with a thin layer on the surface of the substrate to form a metallurgically-bonded cladding layer on the surface of the substrate. Arc surfacing is the use of welding rods or electrodes to deposit on the surface of the substrate for surfacing. Electroplating technology uses direct current to pass 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 powdery or filamentary metal or non-metallic mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B23K9/12B23K9/127B23K9/133B23K9/173
CPCB23K9/044B23K9/12B23K9/1274B23K9/133B23K9/173
Inventor 高向东蓝重洲
Owner GUANGDONG UNIV OF TECH
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