本次设计肥皂盒型芯和型腔材料都选Cr12MoV钢，因为Cr12MoV钢

本次设计肥皂盒型芯和型腔材料都选Cr12MoV钢，因为Cr12MoV钢有较高的淬透性，截面在 300 ~ 400㎜ 以下可以完全淬透，它在300 ~ 400℃的环境下仍然可以保持良好硬度和耐磨性，Cr12MoV钢的韧性比Cr12的韧性强，淬火时Cr12MoV钢的体积变化最小，可以用来制造断面较大、形状复杂、经受较大冲击负荷的各种模具和工具。所以选择Cr12MoV钢较合适。

In this design, both the core and cavity materials of the soap box are made of Cr12MoV steel, because Cr12MoV steel has high hardenability and can be completely quenched with a cross-section below 300-400 mm. It can still maintain good hardness and wear resistance in an environment of 300-400 ℃. The toughness of Cr12MoV steel is stronger than that of Cr12, and the volume change of Cr12MoV steel during quenching is minimal, which can be used to manufacture large cross-sections and complex shapes Various molds and tools that withstand significant impact loads. So it is more suitable to choose Cr12MoV steel.

In this design, the core and cavity of the soap box are made of Cr12MoV steel, because it has high hardenability, and its cross section can be completely hardened below 300 ~ 400㎜, and it can still maintain good hardness and wear resistance at 300 ~ 400℃. The toughness of Cr12MoV steel is stronger than that of Cr12, and the volume change of Cr12MoV steel is the smallest when quenching, so it can be used to manufacture large cross section and complex shape. Therefore, it is more suitable to choose Cr12MoV steel.