Authors:
Zhanfang Wu (1), Lida Che (1), Kai Wang (1), Zhoujin Lv (1), Xiangyang Li (1)
1- CISRI HIPEX TECHNOLOGY CO., LTD., Beijin, China
Abstract:
As one of the important technologies in powder metallurgy, Hot Isostatic Pressing Near Net Shape (HIP-NNS) technology has been widely used in the aerospace field in recent years due to its ability to prepare high-performance products with complex structures. The Duplex stainless steel (DSS) material has attracted the attention of marine engineering, shipbuilding, nuclear power, petrochemical and other industries for its excellent mechanical properties and corrosion resistance. This paper uses HIP-NNS technology, Shima yield model and MSC.Marc finite element software completed the densification of DSS powder and the prediction of package size deformation, and analyzed the changes in powder relative density and equivalent stress. The results showed that the simulation model achieved high prediction accuracy, with a maximum size error of no more than 3%. The numerical simulation method was used to accurately predict the shrinkage of the package and the powder densification process, greatly improving powder utilization and production efficiency, reducing processing costs, and providing a new process approach for achieving integrated forming of complex DSS products.
DOI:
https://doi.org/10.59499/EP246299296
