铸造工艺被广泛应用是因它具有以相当低的成本生产精密铸件的能力。这些优点在过去几年已对制造大型铸件产生了良好的影响,在90年代将继续产生影响。铸造工艺能够以其最低的成本生产出形状尺寸适宜的构件和机器零件在未来仍将倍受青睐。为了生产具有最佳性能的高质量铸件,铸造行业正集中研究更好的工艺方法。砂型铸造:过去几十年,“湿型砂”铸造工艺已逐步实现了机械化,表现在能生产高质量、高紧实度砂型的造型机。它可把砂型在铸造过程中的变形量减到最小,这类机器 The casting process is widely used because of its ability to produce precision castings at a relatively low cost. These advantages have had a good effect on the manufacture of large castings in the past few years and will continue to have an impact in the 1990s. The casting process will be able to produce components and machine parts of the right shape and dimensions at the lowest possible cost in the future. In order to produce high-quality castings with the best performance, the foundry industry is focusing on better process methods. Sand casting: Over the past few decades, “wet sand” casting process has been gradually mechanized, manifested in the production of high-quality, high compaction sand molding machine. It minimizes the amount of deformation of the sand during the casting process. Such machines