Although the relatively cool cooldown of this type of weld encountered in 10 seconds was somewhat longer, the longer time was determined for experimental repeatability and the need to simulate a high heat input weld, because the purpose of this study was to evaluate the ability of the parent material to exhibit good performance over a given large heat input range.
ERW pipe?welding in the pipeline industry, shorten the construction time and reduce the related costs of voice getting higher and higher. One way to reduce costs is to shorten the welding time or by using higher welding speeds and or fewer beads. However Cheap Nike Air Presto Mens , the former method may increase the welding defect rate, and the latter method may result in an increase in heat input. Unfortunately, it is often observed that high heat input soldering can cause performance degradation in the HAZ. Therefore, we want to optimize the steel's ability to withstand a wide range of welding conditions. The main cause of deterioration is the large original austenite grain size and the coarse discrete particles produced by some chemical
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07.08.2019 09:07
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