Application of Virtual Reality Technology in Welding Training

Welding into a form of modern industrial high-quality, high-efficiency manufacturing technology, an indispensable processing technology, widely used in a variety of production applications, such as automotive manufacturing, pressure vessel manufacturing, shipbuilding and aerospace industry. Although various automated welding methods are currently mature and applied more and more, manual welding still occupies a certain proportion due to the method and flexibility of manual welding, such as in pressure vessel piping, various maintenance welding, etc. Welding still has an irreplaceable effect. The survey found that in the automobile, boiler, shipbuilding and other manufacturing industries, the lack of professional welders or the quality of the former welders can not meet the new demands of production development and technological innovation, and some have seriously affected the development of new products, product quality and production tasks. The completion of the welding workers, especially the welding talents above the senior level, is one of the largest gaps. It is more difficult to properly apply and master welding operation skills than other machining processes, and it is more difficult to train a welder who is skilled in superb operation skills. Therefore, welder training is particularly important.

At present, most of the nation's tens of thousands of welding training institutions still use the traditional training mode. In this kind of training mode, when the actual welding operation training, it usually takes a long time to repeat, the welder can grasp the basic essentials of operation. The traditional welding training mode, which consumes a large number of welding rods and work, has high training costs, and will cause harmful substances such as toxic and harmful gases, welding fumes, dust, glare, ultraviolet rays, radiation and electromagnetic pollution during welding operations. It poses a certain hazard to the welder's body.

Virtual implementation technology refers to the construction of realistic virtual environment through computer graphics and other technologies. With advanced computer technology and sensing test technology, the relevant information of field welding in real life is collected, and the information is passed through the visible window in the virtual environment. Now let the welder train in a virtual welding environment. In a virtual environment, the operator uses the natural skills of human beings to realize the test and operation of the simulated environment through the keyboard, mouse and various sensors, and obtains the perceptual and rational understanding from the qualitative and quantitative integrated environment. People's visual, auditory and tactile feelings are the same in the real environment, that is, the feeling of “immersive” and overcome the shortcomings of the traditional welding training mode.

The use of virtual reality technology in welding training has important practical significance. It is an effective measure to improve training efficiency, reduce training costs and improve the training environment. Moreover, the evaluation criteria provided by the computer are fair to each trainer, thus avoiding The artificial interference factor in the traditional training mode.

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