Device and method for detecting porosity of aluminum alloy welding seam

Abstract

The invention relates to the technical field of welding wire detection, and especially relates to a device and a method for detecting the porosity of an aluminum alloy welding seam. The device comprises a base, an image shooting module and a computer, and the base is provided with a plane milling mechanism used for milling an aluminum alloy welding seam and a moving platform used for fixing the aluminum alloy welding seam; and the base is provided with a displacement mechanism used for controlling transverse displacement of the movable platform and a control mechanism used for controlling the plane milling mechanism to be close to or away from the movable platform, the image shooting module is located above the movable platform, and the image shooting module is connected with the computer. During use, plane milling is carried out on the aluminum alloy welding seam, the image shooting module is used for shooting the image of the aluminum alloy welding seam when one layer of plane is milled, the shot images are synthesized into one image, air hole data in the image are measured, and the measured data are compared with the standard, so that the defect grade of the aluminum alloy welding seam is judged, and detection is more visual and accurate.

Description

technical field [0001] The invention relates to the technical field of welding wire detection, in particular to a detection device and a detection method for the porosity of an aluminum alloy weld seam. Background technique [0002] Aluminum welding wire is a soft material with relatively poor columnar strength and is extremely sensitive to the solubility of hydrogen when molten, so its success in a production environment depends largely on its methods and controls during production Whether the method is reasonable or not, the factor that has the greatest impact on the performance of MIG aluminum welding wire is the content of H element in the welding wire. And its H content is mainly manifested in the H content on the surface of the welding wire and inside the welding wire. The control of the content of gas elements in aluminum alloys is an important focus of the 5-series high-magnesium aluminum alloy melt purification technology, especially the content of hydrogen, which ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: in order to solve the existing traditional methods of detecting porosity, most of them adopt welding and then ray detection method. This ray detection method needs professional ray room, film and professional RT detection personnel. It is long and the cost is relatively high. Long-term exposure to the radiation environment will cause harm to the human body and affect the health of workers. Moreover, the two overlapping holes along the irradiation direction cannot be detected by the radiation detection method, which leads to inaccurate detection. In order to solve the problem, a detection device and detection method for the porosity of aluminum alloy welds are now provided

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