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| 題名: | 熔模鑄造用碳化矽粉末增強型殼的力學、熱學和物理性能研究： 粉末目數和含量的影響;Study on the mechanical, thermal, and physical properties of SiC powder-reinforced shell for investment casting process: the influence of powder mesh size and content |
| 作者: | 丁舒克;Khoiruddin, Sukhoiri |
| 貢獻者: | 機械工程學系 |
| 關鍵詞: | 熔模鑄造;碳化矽;斷裂模數 |
| 日期: | 2025-01-16 |
| 上傳時間: | 2025-04-09 18:28:55 (UTC+8) |
| 出版者: | 國立中央大學 |
| 摘要: | 陶瓷殼模在熔模鑄造中扮演了重要的角色，可增加模具的強度，並具有所需的品質與
尺寸精度。在本文中，碳化矽 (SiC) 是一種具有良好強度、硬度、耐高溫性、化學穩
定性及熱導性的材料。對殼模的厚度進行了幾何學的研究；表面漿料由鋯石 (ZrSiO4)
粉末與 levasil FO830 粘結劑組成，而後備漿料則使用莫來石 (3Al2O3~2SiO2) 粉末與
膠狀二氧化矽粘結劑 (原殼) 加入 SiC 粉末。本研究探討將碳化矽(SiC)粉末4,000目
(微米級尺寸)與10,000目(奈米級尺寸)，成分為5~25 wt%(4.5層)的微米級比例加入
熔模鑄造後備漿料中，對模殼的機械、熱、物性的影響，將與厚度為 4.5~8.5 層的原
殼進行比較。本研究的主要創新與發現是，以 4.5 層至 8.5 層不同厚度的原殼模取代
加入碳化矽 (SiC) 的殼模，其含量變化範圍為 5 至 25 wt%（原殼厚度 5.5、6.5 及
8.5 層可分別以 4,000 目 SiC 取代，其含量百分比分別為 5、10 及 25 wt% 4.5
層）。這顯示含有碳化矽 (SiC) 的殼模可以藉由考慮模具的強度、逸出氣體的流動，
以及在整個殼模與鑄造過程中產生的故障，來降低層厚。利用 MOR vs. 滲透率 vs.
HTC 提出殼模的優點圖 (FOMs)，以了解含 SiC 強化的殼模能有效取代原殼模。這些結
果對投資鑄造業提供了重要的參考，因為投資鑄造業需要有效鑄造出具有非常嚴格精
度與尺寸的物件，並將生產成本與時間降至最低。;Ceramic shell molds in investment casting have played an important role in increasing the
strength of the mold and having the desired quality and dimensional accuracy. In this article,
silicon carbide (SiC) is a material that has good strength, hardness, resistance to high
temperatures, chemical stability, and thermal conductivity. The thickness of the shell mold has
been investigated geometrically; the surface slurry consists of zircon (ZrSiO4) powder with
levasil FO830 binder, while the backup slurry uses mullite (3Al2O3~2SiO2) powder with
colloidal silica binder (original shell) added SiC powder. This research investigates the effect
of the ratio of silicon carbide (SiC) powder 4,000 (micro-scale size) and 10,000 (nano-scale
size) mesh with a composition of 5 to 25 wt% (4.5 layer) on a microscopic scale into the
investment casting backup slurry on the mechanical, thermal, and physical properties of the
molded shell which will be compared with the original shell with thickness 4.5 to 8.5 layers.
The main innovation and finding of this research is that the shell mold with the original shell
with various mold thickness variations from 4.5 to 8.5 layers can be replaced with shell molds
adding silicon carbide (SiC) content of 4.5 layer thickness with contents variations ranging from
5 to 25 wt% (original shell with thickness 5.5, 6.5, and 8.5 layers can be replaced by SiC 4,000
mesh with percentage contents of 5, 10, and 25 wt% 4.5 layer, respectively). This suggests that
shell molds containing silicon carbide (SiC) can lower the thickness of layers by considering
the mold′s strength, the flow of escaping gas, and faults that arise throughout the shell mold and
casting processes. The figure of merit (FOMs) for the shell mold was proposed using the MOR
vs. permeability vs. HTC to see how effectively the shell mold reinforced with SiC content can
replace the original shell mold. These results provide an important reference for the investment
casting industry, which requires effectiveness in casting objects that have very strict accuracy
and dimensions and minimize production costs and time. |
| 顯示於類別: | [機械工程研究所] 博碩士論文
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