Petrochemical equipment has been working under high temperature and high pressure for a long time, and the load situation is complicated. Frequent intermittent operations and start-ups and shutdowns often cause load and temperature fluctuations, resulting in equipment fatigue failure. Therefore, the research on fatigue performance of 13CrMo44 material, A387 gr22 cl2 steel, which is commonly used in petrochemical industry, under complex stress state has important theoretical value and engineering significance.
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According to the difference of automatic cutting and semi-automatic cutting, adjust the distance of each cutting gun, determine the trailing amount, and consider the slit compensation;In the cutting process, the size and direction of the Angle of the cutting gun are mainly determined by the thickness of the 13CrMo44 material steel plate.
Ordinary medium and thick steel plate 13CrMo44 material is a kind of deoxidized steel. The oxygen content of the steel liquid is relatively high, and a lot of gas will be produced during the production process to make the steel liquid boil, so it is also called boiling steel. Advantages: this kind of steel plate has smooth surface, good quality and easy processing. Because this kind of steel plate has no concentrated shrinkage cavity, the amount of deoxidizer is very small and the price is lower than other steel plates.