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液态模锻时,整个凝固过程都需要施加一定的压力,因此需要有加压装置。下面对液态模锻的各种基本工艺参数作一简单介绍。1、加压效果。液态模锻加压效果的好坏主要表现在下列几个方面:(1)铸造缺陷;(2)凝固组织;(3)偏析;(4)相平衡;(5)机械性能。(1)铸造缺陷:如图1所示,普通铸造和液态模锻的凝固方式是大不相同的:前者是与铸型接触的
Liquid forging, the entire solidification process need to exert a certain pressure, so the need for a pressure device. Following a variety of basic liquid forging process parameters for a brief introduction. 1, the pressure effect. The quality of the liquid forging press is mainly manifested in the following aspects: (1) casting defects; (2) solidified tissue; (3) segregation; (4) phase equilibrium; (5) mechanical properties. (1) casting defects: As shown in Figure 1, ordinary casting and liquid forging solidification method is very different: the former is in contact with the mold