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If you have to take pictures to pass

2026-10-14 12:57
2026-10-14 15:11

If you want to take a qualified photo of the welding, here are some key points: 1. ** Equipment placement and protection **: Place the shooting equipment behind the welding cap and select the appropriate filter lens model according to the size of the welding current. This way, the molten pool can be clearly photographed and the spatters can be prevented from burning the lens of the shooting equipment. If the conditions allowed, the effect would be better if an automatic dimming helmet was used. 2. ** Dealing with strong light **: If the welding center is too bright, causing video recording and photography to fail (such as carbon dioxide shielding welding), you can try to add and subtract a lens in front of the lens. If it is still bright, add a prismatic lens to polish it. You can also use a method similar to shooting an eclipse, or use strong light to take photos. However, it was important to note that the video recorder could not shoot continuously under strong light, otherwise it would easily burn the CCDs. 3. ** Take photos for X-ray flaw detection **: - First of all, the specifications and size of the work piece (mainly the length of the welding line and the thickness of the work piece) must be measured, and the method of transillumination and the level of inspection must be selected. - According to the specifications of the work piece, select the flaw detector and exposure (tube voltage, tube current, focal length, etc.), select the protection method (such as back protection), the X-ray film, prepare the overlapping mark "^", the positioning mark "^→", the identification mark font size (numbers, English letters, etc.), and select the appropriate image quality meter according to the plate thickness. - After connecting the power supply and cable of the X-ray machine, the machine head was positioned according to the specified focal length, and the window of the machine head was facing the detection part of the work piece. - Draw a cross at the center of the exposure field at the specified focal length, place the back protective lead plate along a line of the cross, and the center is overlapped with the cross. Then, place the negative film hidden bag on the protective lead plate, and place the welding part of the work piece on the center line of the negative film. - The effective transillumination length is 300mm. Mark the position 150mm at both ends of the center of the welding line of the work piece, mark the center, and stick the overlapping mark "^" at both ends of the effective transillumination length. Stick the positioning mark "^" at the center of the welding line (all marks are required to be at least 5mm away from the edge of the welding line). - Place the image quality detector on the welding line (it should be placed at one end of the welding joint on the surface of the source side of the work piece, about 1/4 of the length of the inspected area). The metal wire should cross the welding line, and the fine wire should be placed outside. Print the project name, plate thickness, date, etc. on the hidden bag. - According to the recorded thickness of the work piece, focal length, etc., the tube voltage and exposure amount were selected, and the instrument was adjusted. Then, the exposure was started. After the exposure was completed, the X-ray film was taken back and placed in a fixed place to be separated from the unexposed film. The dark bag was taken back to the dark room for film development and evaluation. Read more exciting novels for free

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