Published 04/17/2025 at 878 × 462 in Development of Water-Soluble Composite Salt Sand Cores Made by a Hot-Pressed Sintering Process Fig. 14. EDX analysis of water-soluble core at the point of (a) and (b) in fig. 14(b), (c) and (d) in fig. 14(c) Fig. 14. EDX analysis of water-soluble core at the point of (a) and (b) in fig. 14(b), (c) and (d) in fig. 14(c)