Technological techniques have to resort to. in cases where the plastic properties of the seam are already when welding at room temperature are located on the lower technical conditions permitted by this type of product and the calculation shows that when welding in the cold, the requirements of technical conditions cannot be satisfied. The same techniques should be used in cases where the properties of the seam metal, which provide sufficient resistance to its transition to a fragile state in the manufacture of the structure at normal temperature, may not be sufficient in the cold. For these conditions, it will be useful to increase the plasticity or other characteristics of the metal, which will make it necessary to adjust the welding mode or in other measures. If you want to build a cottage for yourself and your family, then the best option would be to order its construction from a professional company here – turnkey cottages. The structure of the weld metal when the welding temperature changes from +20 to -50 ° C also practically does not change. The effect of welding in the cold on the structure and properties of the metal zone metal. Experiments conducted in the above range of modes, brands of steels, metal thicknesses and types of welded joints showed that the structure and mechanical properties of the metal zone with a decrease in the welding temperature change in accordance with general laws. As well as for the metal metal, only a tendency to increase the strength and a decrease in the plasticity of the metal zone under consideration is characteristic. The sizes of individual sections of the near -stage zone and its total length practically do not change.
