Manhart How to check indicators such as weld quality, welding speed, and welding depth in welding testing?

In welding testing, in order to comprehensively inspect indicators such as weld quality, welding speed, and welding depth, the following steps can be followed:
1、 Weld quality inspection
1. * * Visual inspection * *:
-Carefully observe the appearance of the weld seam with the naked eye or magnifying glass. The color of the weld seam should be uniform and consistent, and the surface should be smooth and free of defects such as cracks, pores, slag inclusions, etc.
-Pay special attention to whether the width and height of the weld meet the requirements. The consistency of width and height reflects the stability of the welding process.
2. * * Penetration inspection * * (optional):
-Apply fluorescent liquid or penetrant to the surface of the weld seam, and then irradiate it with a UV lamp. Check whether there are indications of cracks, slag inclusions, and other defects on the surface of the weld seam.
3. X-ray or ultrasonic testing (optional, but more accurate):
-For more complex welds or welds with higher quality requirements, X-ray or ultrasonic testing can be used to detect the presence of defects such as pores and inclusions inside the weld.
2、 Welding speed inspection
1. * * Timer * *:
-Record the time before and after welding, and calculate the actual welding time.
-The average welding speed can be obtained by dividing the length of a known weld seam by the actual welding time.
2. * * Laser displacement sensor * * (advanced method):
-Real time monitoring of welding gun displacement in the welding direction using laser displacement sensors. By combining welding time, the welding speed can be accurately calculated.
3、 Welding depth inspection
1. * * Direct measurement * *:
-For simple welds, measuring tools such as calipers and depth gauges can be used directly to measure the penetration depth of the weld.
2. * * Penetration test * * (for more complex or demanding welds):
-Process the weld sample through steps such as cutting, polishing, and corrosion, and then observe and record the penetration depth using a microscope.
-The penetration test can provide more accurate penetration data, but the operation is relatively complex.
4、 Comprehensive evaluation and recording
1. * * Comprehensive evaluation * *:
-Conduct a comprehensive evaluation of welding quality based on indicators such as weld quality, welding speed, and welding depth.
-The evaluation results should take into account the influence of various factors, such as materials, equipment, process parameters, etc.
2. * * Recording and Preservation * *:
-Record and save the results of welding tests for subsequent analysis and reference.
-For each welding test, detailed parameter settings, testing process, and test results should be recorded.
Through the above steps and methods, it is possible to comprehensively inspect indicators such as weld quality, welding speed, and welding depth, and optimize and improve the welding process based on test results. Please note that the specific inspection methods and equipment may vary depending on the actual situation, so in practical operation, appropriate inspection methods and equipment should be selected according to the specific situation.