【摘要】 在真空密封造型工艺（V法）的基础上，提出压力下真空密封造型铸造工艺（P－V法），并对P－V法中铸型抗压强度、抗剪强度、抗拉强度、硬度、薄膜烧失、浇注时型腔压力、金属液充型流动等工艺参数进行系统的基础研究．更多还原

【Abstract】 On the basis of vacuum sealed molding process (V process), the vacuum sealed molding casting process (P-V process ) under pressure is introduced. The molding compressive strength, shearing strength , tensile strength, toasting and metal liquid flowing are comprehensively analyzed.更多还原