1. Problem analysisIn the manufacturing and processing process of trapezoidal welded pipes, the problem of uneven thickness of welded pipes is often encountered, which will lead to the deviation of the outer diameter of the welded pipe. In order to ensure the quality and performance of welded pipes, effective debugging methods must be adopted to control the accuracy of the outer diameter dimensions. Therefore, we need to analyze the causes of uneven thickness in depth and take targeted measures for debugging. Second, debugging method 1Adjusting welding parametersWelding parameters is one of the key factors affecting the quality of the weld. First of all, it is necessary to check whether the parameters such as welding current, voltage and welding speed are appropriate. If it is found that the parameters are not set properly, they should be adjusted in time to ensure that a stable and uniform molten pool can be formed during the welding process. At the same time, it is necessary to ensure that the welding equipment is in good working condition, such as regularly checking the wear of the electrode head and replacing the electrode head with serious wear in time. 2.Controlling the quality of the material directly affects the quality and performance of the welded pipe. Therefore, it is necessary to ensure that the quality of the raw materials purchased meets the requirements of the standard. In the production process, strict quality inspection of materials should be carried out, such as checking the chemical composition and mechanical properties of materials. At the same time, it is necessary to reasonably select the type and specification of welding wire and flux to ensure that high-quality and stable welds can be formed during the welding process. 3.Strengthening temperature control is one of the important factors affecting the quality and performance of welded pipes. In the production process, the welding temperature and cooling rate should be strictly controlled. If the temperature is too high or the cooling rate is too fast, it will lead to uneven weld structure and mechanical properties; If the temperature is too low or the cooling rate is too slow, it is easy to produce welding defects and deformation. Therefore, according to the material and specifications of the welded pipe, the welding temperature and cooling rate should be reasonably selected. 4.Adjusting the molding processThe forming process is one of the key links that affect the dimensional accuracy of the outer diameter of the welded pipe. In the production process, it is necessary to regularly check the wear and tear of the forming mold, and repair or replace the seriously worn mold in time. At the same time, according to the material and specifications of the welded pipe, the molding process parameters should be reasonably adjusted, such as extrusion ratio, friction coefficient, etc. In addition, the forming mold should be calibrated regularly to ensure that its accuracy meets the requirements. 5.Strengthening quality inspectionQuality inspection is one of the important means to ensure the quality and performance of welded pipes. In the production process, the quality of the welded pipe should be regularly inspected, such as measuring the outer diameter size, wall thickness, weld quality and other indicators. If a quality problem is found, measures should be taken in time to repair or reprocess. At the same time, it is necessary to continuously summarize lessons learned, optimize production processes and strengthen quality control to reduce the recurrence of similar problems. Trapezoidal steel pipes
3. Summary. Through the above analysis, we can conclude that the reasons for the uneven thickness of trapezoidal welded pipe manufacturing and processing mainly include improper welding parameters, non-standard material quality, improper temperature control, improper adjustment of molding process parameters and insufficient quality inspection. In order to solve these problems, we need to take corresponding debugging methods, such as adjusting welding parameters, controlling material quality, strengthening temperature control, adjusting the molding process and strengthening quality inspection. Only in this way can we effectively control the outer diameter dimensional accuracy of trapezoidal welded pipes and improve the quality and performance of products.