Longitudinal use from the nearest point of view, using hydroformed tubes used in auto parts concern. Using the hydroforming process systems due to complexity, large pressure, therefore possible to improve the workability of steel. However, previous evaluations steel workability indicators are not clear, I hope to develop a simple evaluation processing technology.
As the hydraulic tube forming equipment is huge, high prices, so the compact hydraulic forming equipment in high demand by the automobile manufacturers and steel plants work together to develop a new concept of compact hydraulic forming equipment. For the production of thick-walled welded pipe, some manufacturers have developed resistance welding and laser welding and high frequency welding combined with technology. In the past, laser welding for the production of stainless steel, will be applied to the welded steel pipe forming speed production lines forming the first time. This technology is due to the development of high power laser generating device before achieved. From a manufacturing technical point of view, the stability of the thick-walled pipe and weld portion forming process technology as key to the development, of low deformation tube technology developed in Japan CBR technique which can produce high-strength steel good processability.
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