Papers by Keyword: Cryogenic Vessel

Abstract: Austenitic stainless steels widely used in cryogenic pressure vessel construction, and heads are formed by cold or warm spinning and stamping. Because of large deformation at excessive circular arc and at the straight parts of head during fabrication, the possibility of damage in these two positions during service is very high. In order to solve this problem, the commonly used S304408, S30403, S31608 steel plates processed under different temperature, different deflection and deformation rate were comparative studied. The evolution of the microstructure and mechanical properties were investigated to quantify the driving characteristics of the martensitic transformation by temperature and mechanical deformation. Consequently, the intergranular corrosion resistance of different microstructure was studied. The results of the research provide valuable reference for the selection and the processing technology of the head steel. Meanwhile, this study also provides a simple method for estimating the material properties after forming.

Abstract: To ensure cryogenic vessels working safely and efficiently is a common focus for governments, manufacturers and customers. Chinese national standard system of gas and material compatibility in cryogenic vessels has still not be build. It is necessary to make a research on international standard about it. In this paper, the main international standard of gas and material compatibility in cryogenic vessels and the international standards of ignition test methods were described.