光固化增材制造技术在熔模铸造中的应用

Application of Stereolithography Technology to Investment Casting

增材制造工艺可以实现复杂形状直接成形,其中光固化增材制造技术具有成形精度高的优势。利用光固化增材制造技术制备熔模,然后与熔模铸造工艺相结合,可以更好地发挥两种工艺的优势,缩短工艺周期。利用光固化增材制造技术制备熔模铸造用陶瓷型芯、型壳,可实现熔模铸造工艺的快速响应。文中简介了光固化增材制造技术的相关设备及成形原理,并分别阐述了光固化树脂熔模和光固化陶瓷型芯/铸型在熔模精密铸造工艺中的应用。

The additive manufacturing technology can realize the direct forming of complex shape,while the stereolithography additive manufacturing technology has the advantage of high forming precision.The advantages of the two technologies can be brought into full play and the process cycle can be shortened by using the stereolithography technology to make the investment patterns and then combining with the investment casting technology.It is also possible to make ceramic cores or even ceramic shells for investment casting by using the stereolithography additive manufacturing process,so as to realize the rapid response of investment casting process.In this paper,the related equipment and forming principle of the stereolithography technology are briefly introduced,and the application of the resin pattern and the ceramic core/shell by stereolithography to the investment casting process are described respectively.