Research In Prediction Of Welding Deformation And Group Control Method Of Multi Welding Powers For Membrane Wall

Tube panel that sustains heat, liquid stress, gas stress and other loads is an important pressure part in the membrane wall. It can improve the thermal efficiency and airtightness. Some methods and experimental research aimed at numerical simulation of welding deformation, shape prediction of welding seam and group control of numerical welding power has been done by "3212" product line of membrane wall, which designed by our group. The main contributions of the paper are as follows:1. Analyzed the temperature, stress and strain during welding process. Verified the simulation model based on the test data of welding temperature from welding site. Combining with the temperature measurement test from welding site, applied the model on a typical tube panel, and optimized the parameters.2. Established artificial neural network prediction model based on engineering test of different welding seam and optimized it using genetic algorithm artificial neural network model. And verified the prediction model and optimization method by conducting experiments on "3212" product line.3. Proposed priority group control strategies and related algorithms of inverter welding power sources based on ANFIS. Simulated the strategies and algorithms as well as the multi-power welding group control system.4. Proposed a welding deformation suppression technology. Studied relationships between welding deformation and welding parameters of welding current, welding voltage and welding speed, and optimized welding parameter sets. Finally, Priority group control with ANFIS of multi-power welding was designed and tested according to goals of deformation of welding seam and shape assurance strategy of welding seam.