铸造是一种复杂的热加工过程。但是,由于缺乏近代的直接的检测手段,往往难于准确地预先确定铸件成形后的成分、组织和性能,而是要待铸件铸出后,再检查其化学成分、金相组织,并测定其机械性能。用什么办法能在金属仍处于液态阶段,就能测出化学成分、金相组织,乃至定出其机械性能,以便对铸造生产进行有效控制,使铸造过程逐步达到科学的管理,这是广大铸造工作者所关心的问题。 Casting is a complex thermal process. However, due to the lack of modern direct inspection methods, it is often difficult to accurately determine the composition, structure and properties of the castings after they have been cast. Instead, after the castings are cast, their chemical composition and microstructure are examined and their mechanical performance. What method can be in the metal is still in the liquid phase, you can measure the chemical composition, microstructure, and even set out its mechanical properties, in order to effectively control the casting production, the casting process to gradually achieve scientific management, which is the majority of foundry Workers are concerned about the problem.