METHOD AND SYSTEM FOR IMPROVING SURFACE FINISH OF INVESTMENT CASTING

Provided are a method and a system for improving surface finish of an investment casting. The method for forming the casting patterns (300) having an improved surface finish include: sealing (115) the casting pattern (300) with a first coating material (410) to form a sealed casting pattern (330) and smoothing the sealed casting pattern (330) with a second coating material (420) to form a smoothed casting pattern (325). The methods for forming the investment casting (560) include: covering a smoothed casting pattern (325) with a mold material (500) to define an enclosed mold volume (520), curing the mold material (500) to form a cured mold material (510), flowing the smoothed casting pattern (325) from the enclosed mold volume (520) to define a void space (522), filling the void space (522) with a liquid investment casting material (550), and solidifying the liquid casting material (550) to define an investment casting (560). 用于改进熔模铸件的表面光洁度的方法和系统。用于形成具有改进的表面光洁度的铸造模型(300)的方法包括：用第一涂层材料(410)密封(115)铸造模型(300)以形成密封