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

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Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/96434

Title:	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
Authors:	丁舒克;Khoiruddin, Sukhoiri
Contributors:	機械工程學系
Keywords:	熔模鑄造;碳化矽;斷裂模數
Date:	2025-01-16
Issue Date:	2025-04-09 18:28:55 (UTC+8)
Publisher:	國立中央大學
Abstract:	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.
Appears in Collections:	[Graduate Institute of Mechanical Engineering] Electronic Thesis & Dissertation

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