Analysis of leakage causes of high silicon corrosion resistant stainless steel shell parts
Visual macroscopic inspection of the defect morphology in the leakage area of the shell parts,metal-lographic and energy spectrum microscopic comparative analysis of the structure,main alloy elements,and their contents at the leakage area of the shell parts,it is believed that the defect that penetrates the wall thickness at the leakage area of the shell parts is a shrinkage metallurgical casting defect generated during the electroslag remelting process,which is not completely removed in the subsequent processing and becomes a crack source during the hot working forming process of the steel bar.The penetrating crack defect is connected to the outside,leading to leak-age of the shell parts during the airtightness test.
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