Analysis of Quality of the Inlet Wall Material
摘要
The material of the inlet wall of the sleeve is steel casting GS-20Mn5, WNo: 1.1120, according to the standard DIN 17182. The rough cast microstructure of the casting is subject to the appearance of porosity, which, together with coarse non-metallic inclusions and dynamic loading during exploitation, and an improperly performed welding procedure, can adversely affect lifetime of the inlet wall and lead to cracking of the material.