【小星星(需筆記可加好友私訊】評論

調拌時間增加 ➙只會增加膨脹、減短時間。........................................

【小甜瓜瓜】評論

①液粉比（✔️）Liquid/Powder Ratio: The higher the L/P ratio, the rougher the casting.液粉比越高，導致金屬鑄造物表面粗糙。②Increased mixing time and mixing efficiency result in a faster set and a greater rise in temperature.調拌時間增加 ➙增加溫度上升幅度、減短時間，不會影響表面粗糙度。③粉末粒徑（✔️）Even under optimal conditions, the surface roughness of the casting is invariably somewhat greater than that of the wax pattern. The difference is probably related to the particle size of the investment, and its ability to reproduce the wax pattern in microscopic detail. 粉末粒徑會影響金屬鑄造物表面的粗糙程度。④化學反應（✔️）Surface roughness is defined as finely spaced surface imperfections whose height, width, and direction establish the predominant surface pattern. 金屬鑄造物表面粗糙度的是相對精細間隔的表面缺陷，其高度、寬度、方向確定了主要的表面樣貌。可以想像化學反應是每種包埋粉（例如石膏鍵結包埋材）作用過程都會進行的反應，會影響金屬鑄造物表面的粗糙程度。