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引言:高压汽轮机的汽缸是长期处于高温、高压,并承受多种交变应力的压力容器。为保证汽缸有足够的强度,加工制造方便、和保证机组运行安全可靠,因此对汽缸的材料壁厚、几何形状都有特殊的要求和规定。由于受冶炼浇铸等因素的影响,汽缸是由多件组焊成的整体。焊缝大而厚(坡口深152mm,
Introduction: The cylinder of a high-pressure turbine is a pressure vessel that has been exposed to high temperatures and pressures for many years and subjected to a variety of alternating stresses. In order to ensure that the cylinder has sufficient strength, easy processing and manufacturing, and to ensure the safe and reliable operation of the unit, so the material thickness of the cylinder wall, the geometry has special requirements and provisions. As a result of smelting casting and other factors, the cylinder is composed of more than one group into the overall welding. Large and thick weld thick (bevel deep 152mm,