论文部分内容阅读
一般熔模铸造制壳工艺工序繁多,周期较长,这是由于它的硬化、凉干这道重复多次的工序所造成。在现行制壳工艺中,它的时间约占总涂壳时间的90％以上。因此,要简化工艺,缩短周期,根本的方法是革掉这道工序。交替硬化即是配制两种不同性能的涂料(一种是酸性,一种是碱性),在模组上交替涂复。在涂复过程中两种涂料相互硬化,快速析出凝胶,达到互相硬化的目的,不再需要外加的硬化和凉干。
The general process of investment casting shell process a wide range of longer cycle, which is due to its hardening, dry the road repeatedly caused by this process. In the current shell making process, its time accounts for about 90% of the total coating time. Therefore, to simplify the process and shorten the cycle, the fundamental solution is to get rid of this process. Alternate hardening is the preparation of two different properties of the paint (one is acidic, one is alkaline), the module coated alternately. During the coating process, the two coatings are hardened with each other, and the gel is precipitated quickly to achieve the purpose of hardening each other. No additional hardening and drying is required.